From 5b2a08262a8c952fef008154933953f083ca5766 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 12 Apr 2007 01:29:46 -0400 Subject: Input: rework handle creation code - consolidate code for binding handlers to a device - return error codes from handlers connect() methods back to input core and log failures Signed-off-by: Dmitry Torokhov --- drivers/input/mousedev.c | 61 ++++++++++++++++++++++++++++++++++++------------ 1 file changed, 46 insertions(+), 15 deletions(-) (limited to 'drivers/input/mousedev.c') diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 664bcc8116fc..007e72f80251 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -624,23 +624,27 @@ static const struct file_operations mousedev_fops = { .fasync = mousedev_fasync, }; -static struct input_handle *mousedev_connect(struct input_handler *handler, struct input_dev *dev, - const struct input_device_id *id) +static int mousedev_connect(struct input_handler *handler, struct input_dev *dev, + const struct input_device_id *id) { struct mousedev *mousedev; struct class_device *cdev; - int minor = 0; + dev_t devt; + int minor; + int error; for (minor = 0; minor < MOUSEDEV_MINORS && mousedev_table[minor]; minor++); if (minor == MOUSEDEV_MINORS) { printk(KERN_ERR "mousedev: no more free mousedev devices\n"); - return NULL; + return -ENFILE; } - if (!(mousedev = kzalloc(sizeof(struct mousedev), GFP_KERNEL))) - return NULL; + mousedev = kzalloc(sizeof(struct mousedev), GFP_KERNEL); + if (!mousedev) + return -ENOMEM; INIT_LIST_HEAD(&mousedev->list); + INIT_LIST_HEAD(&mousedev->mixdev_node); init_waitqueue_head(&mousedev->wait); mousedev->minor = minor; @@ -651,20 +655,45 @@ static struct input_handle *mousedev_connect(struct input_handler *handler, stru mousedev->handle.private = mousedev; sprintf(mousedev->name, "mouse%d", minor); - if (mousedev_mix.open) - input_open_device(&mousedev->handle); - mousedev_table[minor] = mousedev; - cdev = class_device_create(&input_class, &dev->cdev, - MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor), - dev->cdev.dev, mousedev->name); + devt = MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor), + + cdev = class_device_create(&input_class, &dev->cdev, devt, + dev->cdev.dev, mousedev->name); + if (IS_ERR(cdev)) { + error = PTR_ERR(cdev); + goto err_free_mousedev; + } /* temporary symlink to keep userspace happy */ - sysfs_create_link(&input_class.subsys.kset.kobj, &cdev->kobj, - mousedev->name); + error = sysfs_create_link(&input_class.subsys.kset.kobj, + &cdev->kobj, mousedev->name); + if (error) + goto err_cdev_destroy; - return &mousedev->handle; + error = input_register_handle(&mousedev->handle); + if (error) + goto err_remove_link; + + if (mousedev_mix.open) { + error = input_open_device(&mousedev->handle); + if (error) + goto err_unregister_handle; + } + + return 0; + + err_unregister_handle: + input_unregister_handle(&mousedev->handle); + err_remove_link: + sysfs_remove_link(&input_class.subsys.kset.kobj, mousedev->name); + err_cdev_destroy: + class_device_destroy(&input_class, devt); + err_free_mousedev: + mousedev_table[minor] = NULL; + kfree(mousedev); + return error; } static void mousedev_disconnect(struct input_handle *handle) @@ -672,6 +701,8 @@ static void mousedev_disconnect(struct input_handle *handle) struct mousedev *mousedev = handle->private; struct mousedev_list *list; + input_unregister_handle(handle); + sysfs_remove_link(&input_class.subsys.kset.kobj, mousedev->name); class_device_destroy(&input_class, MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + mousedev->minor)); -- cgit v1.2.3-59-g8ed1b From d0ffb9be866519775da19c0a6790f5431c1a8dc6 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 12 Apr 2007 01:30:00 -0400 Subject: Input: handlers - rename 'list' to 'client' The naming convention in input handlers was very confusing - client stuctures were called lists, regular lists were also called lists making anyone looking at the code go mad. Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 150 ++++++++++++++++-------------- drivers/input/joydev.c | 130 +++++++++++++------------- drivers/input/mousedev.c | 237 ++++++++++++++++++++++++----------------------- drivers/input/tsdev.c | 110 ++++++++++++---------- 4 files changed, 329 insertions(+), 298 deletions(-) (limited to 'drivers/input/mousedev.c') diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 840fa1986527..8a4cce5c7806 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -29,11 +29,11 @@ struct evdev { char name[16]; struct input_handle handle; wait_queue_head_t wait; - struct evdev_list *grab; - struct list_head list; + struct evdev_client *grab; + struct list_head client_list; }; -struct evdev_list { +struct evdev_client { struct input_event buffer[EVDEV_BUFFER_SIZE]; int head; int tail; @@ -47,28 +47,28 @@ static struct evdev *evdev_table[EVDEV_MINORS]; static void evdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) { struct evdev *evdev = handle->private; - struct evdev_list *list; + struct evdev_client *client; if (evdev->grab) { - list = evdev->grab; + client = evdev->grab; - do_gettimeofday(&list->buffer[list->head].time); - list->buffer[list->head].type = type; - list->buffer[list->head].code = code; - list->buffer[list->head].value = value; - list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1); + do_gettimeofday(&client->buffer[client->head].time); + client->buffer[client->head].type = type; + client->buffer[client->head].code = code; + client->buffer[client->head].value = value; + client->head = (client->head + 1) & (EVDEV_BUFFER_SIZE - 1); - kill_fasync(&list->fasync, SIGIO, POLL_IN); + kill_fasync(&client->fasync, SIGIO, POLL_IN); } else - list_for_each_entry(list, &evdev->list, node) { + list_for_each_entry(client, &evdev->client_list, node) { - do_gettimeofday(&list->buffer[list->head].time); - list->buffer[list->head].type = type; - list->buffer[list->head].code = code; - list->buffer[list->head].value = value; - list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1); + do_gettimeofday(&client->buffer[client->head].time); + client->buffer[client->head].type = type; + client->buffer[client->head].code = code; + client->buffer[client->head].value = value; + client->head = (client->head + 1) & (EVDEV_BUFFER_SIZE - 1); - kill_fasync(&list->fasync, SIGIO, POLL_IN); + kill_fasync(&client->fasync, SIGIO, POLL_IN); } wake_up_interruptible(&evdev->wait); @@ -76,22 +76,23 @@ static void evdev_event(struct input_handle *handle, unsigned int type, unsigned static int evdev_fasync(int fd, struct file *file, int on) { + struct evdev_client *client = file->private_data; int retval; - struct evdev_list *list = file->private_data; - retval = fasync_helper(fd, file, on, &list->fasync); + retval = fasync_helper(fd, file, on, &client->fasync); return retval < 0 ? retval : 0; } static int evdev_flush(struct file *file, fl_owner_t id) { - struct evdev_list *list = file->private_data; + struct evdev_client *client = file->private_data; + struct evdev *evdev = client->evdev; - if (!list->evdev->exist) + if (!evdev->exist) return -ENODEV; - return input_flush_device(&list->evdev->handle, file); + return input_flush_device(&evdev->handle, file); } static void evdev_free(struct evdev *evdev) @@ -100,48 +101,55 @@ static void evdev_free(struct evdev *evdev) kfree(evdev); } -static int evdev_release(struct inode * inode, struct file * file) +static int evdev_release(struct inode *inode, struct file *file) { - struct evdev_list *list = file->private_data; + struct evdev_client *client = file->private_data; + struct evdev *evdev = client->evdev; - if (list->evdev->grab == list) { - input_release_device(&list->evdev->handle); - list->evdev->grab = NULL; + if (evdev->grab == client) { + input_release_device(&evdev->handle); + evdev->grab = NULL; } evdev_fasync(-1, file, 0); - list_del(&list->node); + list_del(&client->node); + kfree(client); - if (!--list->evdev->open) { - if (list->evdev->exist) - input_close_device(&list->evdev->handle); + if (!--evdev->open) { + if (evdev->exist) + input_close_device(&evdev->handle); else - evdev_free(list->evdev); + evdev_free(evdev); } - kfree(list); return 0; } -static int evdev_open(struct inode * inode, struct file * file) +static int evdev_open(struct inode *inode, struct file *file) { - struct evdev_list *list; + struct evdev_client *client; + struct evdev *evdev; int i = iminor(inode) - EVDEV_MINOR_BASE; - if (i >= EVDEV_MINORS || !evdev_table[i] || !evdev_table[i]->exist) + if (i >= EVDEV_MINORS) + return -ENODEV; + + evdev = evdev_table[i]; + + if (!evdev || !evdev->exist) return -ENODEV; - if (!(list = kzalloc(sizeof(struct evdev_list), GFP_KERNEL))) + client = kzalloc(sizeof(struct evdev_client), GFP_KERNEL); + if (!client) return -ENOMEM; - list->evdev = evdev_table[i]; - list_add_tail(&list->node, &evdev_table[i]->list); - file->private_data = list; + client->evdev = evdev; + list_add_tail(&client->node, &evdev->client_list); - if (!list->evdev->open++) - if (list->evdev->exist) - input_open_device(&list->evdev->handle); + if (!evdev->open++ && evdev->exist) + input_open_device(&evdev->handle); + file->private_data = client; return 0; } @@ -243,54 +251,55 @@ static int evdev_event_to_user(char __user *buffer, const struct input_event *ev #endif /* CONFIG_COMPAT */ -static ssize_t evdev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos) +static ssize_t evdev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { - struct evdev_list *list = file->private_data; + struct evdev_client *client = file->private_data; + struct evdev *evdev = client->evdev; struct input_event event; int retval = 0; - if (!list->evdev->exist) + if (!evdev->exist) return -ENODEV; while (retval < count) { if (evdev_event_from_user(buffer + retval, &event)) return -EFAULT; - input_inject_event(&list->evdev->handle, event.type, event.code, event.value); + input_inject_event(&evdev->handle, event.type, event.code, event.value); retval += evdev_event_size(); } return retval; } -static ssize_t evdev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos) +static ssize_t evdev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { - struct evdev_list *list = file->private_data; + struct evdev_client *client = file->private_data; + struct evdev *evdev = client->evdev; int retval; if (count < evdev_event_size()) return -EINVAL; - if (list->head == list->tail && list->evdev->exist && (file->f_flags & O_NONBLOCK)) + if (client->head == client->tail && evdev->exist && (file->f_flags & O_NONBLOCK)) return -EAGAIN; - retval = wait_event_interruptible(list->evdev->wait, - list->head != list->tail || (!list->evdev->exist)); - + retval = wait_event_interruptible(evdev->wait, + client->head != client->tail || !evdev->exist); if (retval) return retval; - if (!list->evdev->exist) + if (!evdev->exist) return -ENODEV; - while (list->head != list->tail && retval + evdev_event_size() <= count) { + while (client->head != client->tail && retval + evdev_event_size() <= count) { - struct input_event *event = (struct input_event *) list->buffer + list->tail; + struct input_event *event = (struct input_event *) client->buffer + client->tail; if (evdev_event_to_user(buffer + retval, event)) return -EFAULT; - list->tail = (list->tail + 1) & (EVDEV_BUFFER_SIZE - 1); + client->tail = (client->tail + 1) & (EVDEV_BUFFER_SIZE - 1); retval += evdev_event_size(); } @@ -300,11 +309,12 @@ static ssize_t evdev_read(struct file * file, char __user * buffer, size_t count /* No kernel lock - fine */ static unsigned int evdev_poll(struct file *file, poll_table *wait) { - struct evdev_list *list = file->private_data; + struct evdev_client *client = file->private_data; + struct evdev *evdev = client->evdev; - poll_wait(file, &list->evdev->wait, wait); - return ((list->head == list->tail) ? 0 : (POLLIN | POLLRDNORM)) | - (list->evdev->exist ? 0 : (POLLHUP | POLLERR)); + poll_wait(file, &evdev->wait, wait); + return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) | + (evdev->exist ? 0 : (POLLHUP | POLLERR)); } #ifdef CONFIG_COMPAT @@ -387,8 +397,8 @@ static int str_to_user(const char *str, unsigned int maxlen, void __user *p) static long evdev_ioctl_handler(struct file *file, unsigned int cmd, void __user *p, int compat_mode) { - struct evdev_list *list = file->private_data; - struct evdev *evdev = list->evdev; + struct evdev_client *client = file->private_data; + struct evdev *evdev = client->evdev; struct input_dev *dev = evdev->handle.dev; struct input_absinfo abs; struct ff_effect effect; @@ -476,10 +486,10 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd, return -EBUSY; if (input_grab_device(&evdev->handle)) return -EBUSY; - evdev->grab = list; + evdev->grab = client; return 0; } else { - if (evdev->grab != list) + if (evdev->grab != client) return -EINVAL; input_release_device(&evdev->handle); evdev->grab = NULL; @@ -624,7 +634,7 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev, if (!evdev) return -ENOMEM; - INIT_LIST_HEAD(&evdev->list); + INIT_LIST_HEAD(&evdev->client_list); init_waitqueue_head(&evdev->wait); evdev->exist = 1; @@ -671,7 +681,7 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev, static void evdev_disconnect(struct input_handle *handle) { struct evdev *evdev = handle->private; - struct evdev_list *list; + struct evdev_client *client; input_unregister_handle(handle); @@ -684,8 +694,8 @@ static void evdev_disconnect(struct input_handle *handle) input_flush_device(handle, NULL); input_close_device(handle); wake_up_interruptible(&evdev->wait); - list_for_each_entry(list, &evdev->list, node) - kill_fasync(&list->fasync, SIGIO, POLL_HUP); + list_for_each_entry(client, &evdev->client_list, node) + kill_fasync(&client->fasync, SIGIO, POLL_HUP); } else evdev_free(evdev); } diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c index cf24a5bde539..09b8223de5ec 100644 --- a/drivers/input/joydev.c +++ b/drivers/input/joydev.c @@ -43,7 +43,7 @@ struct joydev { char name[16]; struct input_handle handle; wait_queue_head_t wait; - struct list_head list; + struct list_head client_list; struct js_corr corr[ABS_MAX + 1]; struct JS_DATA_SAVE_TYPE glue; int nabs; @@ -55,7 +55,7 @@ struct joydev { __s16 abs[ABS_MAX + 1]; }; -struct joydev_list { +struct joydev_client { struct js_event buffer[JOYDEV_BUFFER_SIZE]; int head; int tail; @@ -87,7 +87,7 @@ static int joydev_correct(int value, struct js_corr *corr) static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) { struct joydev *joydev = handle->private; - struct joydev_list *list; + struct joydev_client *client; struct js_event event; switch (type) { @@ -115,15 +115,15 @@ static void joydev_event(struct input_handle *handle, unsigned int type, unsigne event.time = jiffies_to_msecs(jiffies); - list_for_each_entry(list, &joydev->list, node) { + list_for_each_entry(client, &joydev->client_list, node) { - memcpy(list->buffer + list->head, &event, sizeof(struct js_event)); + memcpy(client->buffer + client->head, &event, sizeof(struct js_event)); - if (list->startup == joydev->nabs + joydev->nkey) - if (list->tail == (list->head = (list->head + 1) & (JOYDEV_BUFFER_SIZE - 1))) - list->startup = 0; + if (client->startup == joydev->nabs + joydev->nkey) + if (client->tail == (client->head = (client->head + 1) & (JOYDEV_BUFFER_SIZE - 1))) + client->startup = 0; - kill_fasync(&list->fasync, SIGIO, POLL_IN); + kill_fasync(&client->fasync, SIGIO, POLL_IN); } wake_up_interruptible(&joydev->wait); @@ -132,9 +132,9 @@ static void joydev_event(struct input_handle *handle, unsigned int type, unsigne static int joydev_fasync(int fd, struct file *file, int on) { int retval; - struct joydev_list *list = file->private_data; + struct joydev_client *client = file->private_data; - retval = fasync_helper(fd, file, on, &list->fasync); + retval = fasync_helper(fd, file, on, &client->fasync); return retval < 0 ? retval : 0; } @@ -145,60 +145,66 @@ static void joydev_free(struct joydev *joydev) kfree(joydev); } -static int joydev_release(struct inode * inode, struct file * file) +static int joydev_release(struct inode *inode, struct file *file) { - struct joydev_list *list = file->private_data; + struct joydev_client *client = file->private_data; + struct joydev *joydev = client->joydev; joydev_fasync(-1, file, 0); - list_del(&list->node); + list_del(&client->node); + kfree(client); - if (!--list->joydev->open) { - if (list->joydev->exist) - input_close_device(&list->joydev->handle); + if (!--joydev->open) { + if (joydev->exist) + input_close_device(&joydev->handle); else - joydev_free(list->joydev); + joydev_free(joydev); } - kfree(list); return 0; } static int joydev_open(struct inode *inode, struct file *file) { - struct joydev_list *list; + struct joydev_client *client; + struct joydev *joydev; int i = iminor(inode) - JOYDEV_MINOR_BASE; - if (i >= JOYDEV_MINORS || !joydev_table[i]) + if (i >= JOYDEV_MINORS) + return -ENODEV; + + joydev = joydev_table[i]; + if (!joydev || !joydev->exist) return -ENODEV; - if (!(list = kzalloc(sizeof(struct joydev_list), GFP_KERNEL))) + client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL); + if (!client) return -ENOMEM; - list->joydev = joydev_table[i]; - list_add_tail(&list->node, &joydev_table[i]->list); - file->private_data = list; + client->joydev = joydev; + list_add_tail(&client->node, &joydev->client_list); - if (!list->joydev->open++) - if (list->joydev->exist) - input_open_device(&list->joydev->handle); + if (!joydev->open++ && joydev->exist) + input_open_device(&joydev->handle); + file->private_data = client; return 0; } -static ssize_t joydev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos) +static ssize_t joydev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { return -EINVAL; } static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { - struct joydev_list *list = file->private_data; - struct joydev *joydev = list->joydev; + struct joydev_client *client = file->private_data; + struct joydev *joydev = client->joydev; struct input_dev *input = joydev->handle.dev; int retval = 0; - if (!list->joydev->exist) + if (!joydev->exist) return -ENODEV; if (count < sizeof(struct js_event)) @@ -217,56 +223,55 @@ static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, lo if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) return -EFAULT; - list->startup = 0; - list->tail = list->head; + client->startup = 0; + client->tail = client->head; return sizeof(struct JS_DATA_TYPE); } - if (list->startup == joydev->nabs + joydev->nkey && - list->head == list->tail && (file->f_flags & O_NONBLOCK)) + if (client->startup == joydev->nabs + joydev->nkey && + client->head == client->tail && (file->f_flags & O_NONBLOCK)) return -EAGAIN; - retval = wait_event_interruptible(list->joydev->wait, - !list->joydev->exist || - list->startup < joydev->nabs + joydev->nkey || - list->head != list->tail); - + retval = wait_event_interruptible(joydev->wait, + !joydev->exist || + client->startup < joydev->nabs + joydev->nkey || + client->head != client->tail); if (retval) return retval; - if (!list->joydev->exist) + if (!joydev->exist) return -ENODEV; - while (list->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) { + while (client->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) { struct js_event event; event.time = jiffies_to_msecs(jiffies); - if (list->startup < joydev->nkey) { + if (client->startup < joydev->nkey) { event.type = JS_EVENT_BUTTON | JS_EVENT_INIT; - event.number = list->startup; + event.number = client->startup; event.value = !!test_bit(joydev->keypam[event.number], input->key); } else { event.type = JS_EVENT_AXIS | JS_EVENT_INIT; - event.number = list->startup - joydev->nkey; + event.number = client->startup - joydev->nkey; event.value = joydev->abs[event.number]; } if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) return -EFAULT; - list->startup++; + client->startup++; retval += sizeof(struct js_event); } - while (list->head != list->tail && retval + sizeof(struct js_event) <= count) { + while (client->head != client->tail && retval + sizeof(struct js_event) <= count) { - if (copy_to_user(buf + retval, list->buffer + list->tail, sizeof(struct js_event))) + if (copy_to_user(buf + retval, client->buffer + client->tail, sizeof(struct js_event))) return -EFAULT; - list->tail = (list->tail + 1) & (JOYDEV_BUFFER_SIZE - 1); + client->tail = (client->tail + 1) & (JOYDEV_BUFFER_SIZE - 1); retval += sizeof(struct js_event); } @@ -276,11 +281,12 @@ static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, lo /* No kernel lock - fine */ static unsigned int joydev_poll(struct file *file, poll_table *wait) { - struct joydev_list *list = file->private_data; + struct joydev_client *client = file->private_data; + struct joydev *joydev = client->joydev; - poll_wait(file, &list->joydev->wait, wait); - return ((list->head != list->tail || list->startup < list->joydev->nabs + list->joydev->nkey) ? - (POLLIN | POLLRDNORM) : 0) | (list->joydev->exist ? 0 : (POLLHUP | POLLERR)); + poll_wait(file, &joydev->wait, wait); + return ((client->head != client->tail || client->startup < joydev->nabs + joydev->nkey) ? + (POLLIN | POLLRDNORM) : 0) | (joydev->exist ? 0 : (POLLHUP | POLLERR)); } static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __user *argp) @@ -374,8 +380,8 @@ static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __u #ifdef CONFIG_COMPAT static long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - struct joydev_list *list = file->private_data; - struct joydev *joydev = list->joydev; + struct joydev_client *client = file->private_data; + struct joydev *joydev = client->joydev; void __user *argp = (void __user *)arg; s32 tmp32; struct JS_DATA_SAVE_TYPE_32 ds32; @@ -428,8 +434,8 @@ static long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned lo static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - struct joydev_list *list = file->private_data; - struct joydev *joydev = list->joydev; + struct joydev_client *client = file->private_data; + struct joydev *joydev = client->joydev; void __user *argp = (void __user *)arg; if (!joydev->exist) @@ -484,7 +490,7 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev, if (!joydev) return -ENOMEM; - INIT_LIST_HEAD(&joydev->list); + INIT_LIST_HEAD(&joydev->client_list); init_waitqueue_head(&joydev->wait); joydev->minor = minor; @@ -572,7 +578,7 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev, static void joydev_disconnect(struct input_handle *handle) { struct joydev *joydev = handle->private; - struct joydev_list *list; + struct joydev_client *client; input_unregister_handle(handle); @@ -583,8 +589,8 @@ static void joydev_disconnect(struct input_handle *handle) if (joydev->open) { input_close_device(handle); wake_up_interruptible(&joydev->wait); - list_for_each_entry(list, &joydev->list, node) - kill_fasync(&list->fasync, SIGIO, POLL_HUP); + list_for_each_entry(client, &joydev->client_list, node) + kill_fasync(&client->fasync, SIGIO, POLL_HUP); } else joydev_free(joydev); } diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 007e72f80251..f6a62687d9e4 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -63,7 +63,7 @@ struct mousedev { int minor; char name[16]; wait_queue_head_t wait; - struct list_head list; + struct list_head client_list; struct input_handle handle; struct mousedev_hw_data packet; @@ -85,7 +85,7 @@ struct mousedev_motion { }; #define PACKET_QUEUE_LEN 16 -struct mousedev_list { +struct mousedev_client { struct fasync_struct *fasync; struct mousedev *mousedev; struct list_head node; @@ -223,47 +223,47 @@ static void mousedev_key_event(struct mousedev *mousedev, unsigned int code, int static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_hw_data *packet) { - struct mousedev_list *list; + struct mousedev_client *client; struct mousedev_motion *p; unsigned long flags; int wake_readers = 0; - list_for_each_entry(list, &mousedev->list, node) { - spin_lock_irqsave(&list->packet_lock, flags); + list_for_each_entry(client, &mousedev->client_list, node) { + spin_lock_irqsave(&client->packet_lock, flags); - p = &list->packets[list->head]; - if (list->ready && p->buttons != mousedev->packet.buttons) { - unsigned int new_head = (list->head + 1) % PACKET_QUEUE_LEN; - if (new_head != list->tail) { - p = &list->packets[list->head = new_head]; + p = &client->packets[client->head]; + if (client->ready && p->buttons != mousedev->packet.buttons) { + unsigned int new_head = (client->head + 1) % PACKET_QUEUE_LEN; + if (new_head != client->tail) { + p = &client->packets[client->head = new_head]; memset(p, 0, sizeof(struct mousedev_motion)); } } if (packet->abs_event) { - p->dx += packet->x - list->pos_x; - p->dy += packet->y - list->pos_y; - list->pos_x = packet->x; - list->pos_y = packet->y; + p->dx += packet->x - client->pos_x; + p->dy += packet->y - client->pos_y; + client->pos_x = packet->x; + client->pos_y = packet->y; } - list->pos_x += packet->dx; - list->pos_x = list->pos_x < 0 ? 0 : (list->pos_x >= xres ? xres : list->pos_x); - list->pos_y += packet->dy; - list->pos_y = list->pos_y < 0 ? 0 : (list->pos_y >= yres ? yres : list->pos_y); + client->pos_x += packet->dx; + client->pos_x = client->pos_x < 0 ? 0 : (client->pos_x >= xres ? xres : client->pos_x); + client->pos_y += packet->dy; + client->pos_y = client->pos_y < 0 ? 0 : (client->pos_y >= yres ? yres : client->pos_y); p->dx += packet->dx; p->dy += packet->dy; p->dz += packet->dz; p->buttons = mousedev->packet.buttons; - if (p->dx || p->dy || p->dz || p->buttons != list->last_buttons) - list->ready = 1; + if (p->dx || p->dy || p->dz || p->buttons != client->last_buttons) + client->ready = 1; - spin_unlock_irqrestore(&list->packet_lock, flags); + spin_unlock_irqrestore(&client->packet_lock, flags); - if (list->ready) { - kill_fasync(&list->fasync, SIGIO, POLL_IN); + if (client->ready) { + kill_fasync(&client->fasync, SIGIO, POLL_IN); wake_readers = 1; } } @@ -351,9 +351,9 @@ static void mousedev_event(struct input_handle *handle, unsigned int type, unsig static int mousedev_fasync(int fd, struct file *file, int on) { int retval; - struct mousedev_list *list = file->private_data; + struct mousedev_client *client = file->private_data; - retval = fasync_helper(fd, file, on, &list->fasync); + retval = fasync_helper(fd, file, on, &client->fasync); return retval < 0 ? retval : 0; } @@ -380,32 +380,33 @@ static void mixdev_release(void) } } -static int mousedev_release(struct inode * inode, struct file * file) +static int mousedev_release(struct inode *inode, struct file *file) { - struct mousedev_list *list = file->private_data; + struct mousedev_client *client = file->private_data; + struct mousedev *mousedev = client->mousedev; mousedev_fasync(-1, file, 0); - list_del(&list->node); + list_del(&client->node); + kfree(client); - if (!--list->mousedev->open) { - if (list->mousedev->minor == MOUSEDEV_MIX) + if (!--mousedev->open) { + if (mousedev->minor == MOUSEDEV_MIX) mixdev_release(); else if (!mousedev_mix.open) { - if (list->mousedev->exist) - input_close_device(&list->mousedev->handle); + if (mousedev->exist) + input_close_device(&mousedev->handle); else - mousedev_free(list->mousedev); + mousedev_free(mousedev); } } - kfree(list); return 0; } -static int mousedev_open(struct inode * inode, struct file * file) +static int mousedev_open(struct inode *inode, struct file *file) { - struct mousedev_list *list; + struct mousedev_client *client; struct input_handle *handle; struct mousedev *mousedev; int i; @@ -417,31 +418,36 @@ static int mousedev_open(struct inode * inode, struct file * file) #endif i = iminor(inode) - MOUSEDEV_MINOR_BASE; - if (i >= MOUSEDEV_MINORS || !mousedev_table[i]) + if (i >= MOUSEDEV_MINORS) + return -ENODEV; + + mousedev = mousedev_table[i]; + if (!mousedev) return -ENODEV; - if (!(list = kzalloc(sizeof(struct mousedev_list), GFP_KERNEL))) + client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL); + if (!client) return -ENOMEM; - spin_lock_init(&list->packet_lock); - list->pos_x = xres / 2; - list->pos_y = yres / 2; - list->mousedev = mousedev_table[i]; - list_add_tail(&list->node, &mousedev_table[i]->list); - file->private_data = list; + spin_lock_init(&client->packet_lock); + client->pos_x = xres / 2; + client->pos_y = yres / 2; + client->mousedev = mousedev; + list_add_tail(&client->node, &mousedev->client_list); - if (!list->mousedev->open++) { - if (list->mousedev->minor == MOUSEDEV_MIX) { + if (!mousedev->open++) { + if (mousedev->minor == MOUSEDEV_MIX) { list_for_each_entry(handle, &mousedev_handler.h_list, h_node) { - mousedev = handle->private; - if (!mousedev->open && mousedev->exist) + struct mousedev *md = handle->private; + if (!md->open && md->exist) input_open_device(handle); } } else - if (!mousedev_mix.open && list->mousedev->exist) - input_open_device(&list->mousedev->handle); + if (!mousedev_mix.open && mousedev->exist) + input_open_device(&mousedev->handle); } + file->private_data = client; return 0; } @@ -450,13 +456,13 @@ static inline int mousedev_limit_delta(int delta, int limit) return delta > limit ? limit : (delta < -limit ? -limit : delta); } -static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data) +static void mousedev_packet(struct mousedev_client *client, signed char *ps2_data) { struct mousedev_motion *p; unsigned long flags; - spin_lock_irqsave(&list->packet_lock, flags); - p = &list->packets[list->tail]; + spin_lock_irqsave(&client->packet_lock, flags); + p = &client->packets[client->tail]; ps2_data[0] = 0x08 | ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07); ps2_data[1] = mousedev_limit_delta(p->dx, 127); @@ -464,44 +470,44 @@ static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data) p->dx -= ps2_data[1]; p->dy -= ps2_data[2]; - switch (list->mode) { + switch (client->mode) { case MOUSEDEV_EMUL_EXPS: ps2_data[3] = mousedev_limit_delta(p->dz, 7); p->dz -= ps2_data[3]; ps2_data[3] = (ps2_data[3] & 0x0f) | ((p->buttons & 0x18) << 1); - list->bufsiz = 4; + client->bufsiz = 4; break; case MOUSEDEV_EMUL_IMPS: ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1); ps2_data[3] = mousedev_limit_delta(p->dz, 127); p->dz -= ps2_data[3]; - list->bufsiz = 4; + client->bufsiz = 4; break; case MOUSEDEV_EMUL_PS2: default: ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1); p->dz = 0; - list->bufsiz = 3; + client->bufsiz = 3; break; } if (!p->dx && !p->dy && !p->dz) { - if (list->tail == list->head) { - list->ready = 0; - list->last_buttons = p->buttons; + if (client->tail == client->head) { + client->ready = 0; + client->last_buttons = p->buttons; } else - list->tail = (list->tail + 1) % PACKET_QUEUE_LEN; + client->tail = (client->tail + 1) % PACKET_QUEUE_LEN; } - spin_unlock_irqrestore(&list->packet_lock, flags); + spin_unlock_irqrestore(&client->packet_lock, flags); } -static ssize_t mousedev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos) +static ssize_t mousedev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) { - struct mousedev_list *list = file->private_data; + struct mousedev_client *client = file->private_data; unsigned char c; unsigned int i; @@ -510,95 +516,95 @@ static ssize_t mousedev_write(struct file * file, const char __user * buffer, si if (get_user(c, buffer + i)) return -EFAULT; - if (c == mousedev_imex_seq[list->imexseq]) { - if (++list->imexseq == MOUSEDEV_SEQ_LEN) { - list->imexseq = 0; - list->mode = MOUSEDEV_EMUL_EXPS; + if (c == mousedev_imex_seq[client->imexseq]) { + if (++client->imexseq == MOUSEDEV_SEQ_LEN) { + client->imexseq = 0; + client->mode = MOUSEDEV_EMUL_EXPS; } } else - list->imexseq = 0; + client->imexseq = 0; - if (c == mousedev_imps_seq[list->impsseq]) { - if (++list->impsseq == MOUSEDEV_SEQ_LEN) { - list->impsseq = 0; - list->mode = MOUSEDEV_EMUL_IMPS; + if (c == mousedev_imps_seq[client->impsseq]) { + if (++client->impsseq == MOUSEDEV_SEQ_LEN) { + client->impsseq = 0; + client->mode = MOUSEDEV_EMUL_IMPS; } } else - list->impsseq = 0; + client->impsseq = 0; - list->ps2[0] = 0xfa; + client->ps2[0] = 0xfa; switch (c) { case 0xeb: /* Poll */ - mousedev_packet(list, &list->ps2[1]); - list->bufsiz++; /* account for leading ACK */ + mousedev_packet(client, &client->ps2[1]); + client->bufsiz++; /* account for leading ACK */ break; case 0xf2: /* Get ID */ - switch (list->mode) { - case MOUSEDEV_EMUL_PS2: list->ps2[1] = 0; break; - case MOUSEDEV_EMUL_IMPS: list->ps2[1] = 3; break; - case MOUSEDEV_EMUL_EXPS: list->ps2[1] = 4; break; + switch (client->mode) { + case MOUSEDEV_EMUL_PS2: client->ps2[1] = 0; break; + case MOUSEDEV_EMUL_IMPS: client->ps2[1] = 3; break; + case MOUSEDEV_EMUL_EXPS: client->ps2[1] = 4; break; } - list->bufsiz = 2; + client->bufsiz = 2; break; case 0xe9: /* Get info */ - list->ps2[1] = 0x60; list->ps2[2] = 3; list->ps2[3] = 200; - list->bufsiz = 4; + client->ps2[1] = 0x60; client->ps2[2] = 3; client->ps2[3] = 200; + client->bufsiz = 4; break; case 0xff: /* Reset */ - list->impsseq = list->imexseq = 0; - list->mode = MOUSEDEV_EMUL_PS2; - list->ps2[1] = 0xaa; list->ps2[2] = 0x00; - list->bufsiz = 3; + client->impsseq = client->imexseq = 0; + client->mode = MOUSEDEV_EMUL_PS2; + client->ps2[1] = 0xaa; client->ps2[2] = 0x00; + client->bufsiz = 3; break; default: - list->bufsiz = 1; + client->bufsiz = 1; break; } - list->buffer = list->bufsiz; + client->buffer = client->bufsiz; } - kill_fasync(&list->fasync, SIGIO, POLL_IN); + kill_fasync(&client->fasync, SIGIO, POLL_IN); - wake_up_interruptible(&list->mousedev->wait); + wake_up_interruptible(&client->mousedev->wait); return count; } -static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos) +static ssize_t mousedev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { - struct mousedev_list *list = file->private_data; + struct mousedev_client *client = file->private_data; int retval = 0; - if (!list->ready && !list->buffer && (file->f_flags & O_NONBLOCK)) + if (!client->ready && !client->buffer && (file->f_flags & O_NONBLOCK)) return -EAGAIN; - retval = wait_event_interruptible(list->mousedev->wait, - !list->mousedev->exist || list->ready || list->buffer); + retval = wait_event_interruptible(client->mousedev->wait, + !client->mousedev->exist || client->ready || client->buffer); if (retval) return retval; - if (!list->mousedev->exist) + if (!client->mousedev->exist) return -ENODEV; - if (!list->buffer && list->ready) { - mousedev_packet(list, list->ps2); - list->buffer = list->bufsiz; + if (!client->buffer && client->ready) { + mousedev_packet(client, client->ps2); + client->buffer = client->bufsiz; } - if (count > list->buffer) - count = list->buffer; + if (count > client->buffer) + count = client->buffer; - list->buffer -= count; + client->buffer -= count; - if (copy_to_user(buffer, list->ps2 + list->bufsiz - list->buffer - count, count)) + if (copy_to_user(buffer, client->ps2 + client->bufsiz - client->buffer - count, count)) return -EFAULT; return count; @@ -607,11 +613,12 @@ static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t co /* No kernel lock - fine */ static unsigned int mousedev_poll(struct file *file, poll_table *wait) { - struct mousedev_list *list = file->private_data; + struct mousedev_client *client = file->private_data; + struct mousedev *mousedev = client->mousedev; - poll_wait(file, &list->mousedev->wait, wait); - return ((list->ready || list->buffer) ? (POLLIN | POLLRDNORM) : 0) | - (list->mousedev->exist ? 0 : (POLLHUP | POLLERR)); + poll_wait(file, &mousedev->wait, wait); + return ((client->ready || client->buffer) ? (POLLIN | POLLRDNORM) : 0) | + (mousedev->exist ? 0 : (POLLHUP | POLLERR)); } static const struct file_operations mousedev_fops = { @@ -643,7 +650,7 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev if (!mousedev) return -ENOMEM; - INIT_LIST_HEAD(&mousedev->list); + INIT_LIST_HEAD(&mousedev->client_list); INIT_LIST_HEAD(&mousedev->mixdev_node); init_waitqueue_head(&mousedev->wait); @@ -699,7 +706,7 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev static void mousedev_disconnect(struct input_handle *handle) { struct mousedev *mousedev = handle->private; - struct mousedev_list *list; + struct mousedev_client *client; input_unregister_handle(handle); @@ -711,8 +718,8 @@ static void mousedev_disconnect(struct input_handle *handle) if (mousedev->open) { input_close_device(handle); wake_up_interruptible(&mousedev->wait); - list_for_each_entry(list, &mousedev->list, node) - kill_fasync(&list->fasync, SIGIO, POLL_HUP); + list_for_each_entry(client, &mousedev->client_list, node) + kill_fasync(&client->fasync, SIGIO, POLL_HUP); } else { if (mousedev_mix.open) input_close_device(handle); @@ -745,7 +752,7 @@ static const struct input_device_id mousedev_ids[] = { .absbit = { BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_TOOL_WIDTH) }, }, /* A touchpad */ - { }, /* Terminating entry */ + { }, /* Terminating entry */ }; MODULE_DEVICE_TABLE(input, mousedev_ids); @@ -777,7 +784,7 @@ static int __init mousedev_init(void) return error; memset(&mousedev_mix, 0, sizeof(struct mousedev)); - INIT_LIST_HEAD(&mousedev_mix.list); + INIT_LIST_HEAD(&mousedev_mix.client_list); init_waitqueue_head(&mousedev_mix.wait); mousedev_table[MOUSEDEV_MIX] = &mousedev_mix; mousedev_mix.exist = 1; diff --git a/drivers/input/tsdev.c b/drivers/input/tsdev.c index a23aedc64ab1..fbef35d2d76c 100644 --- a/drivers/input/tsdev.c +++ b/drivers/input/tsdev.c @@ -111,13 +111,13 @@ struct tsdev { int minor; char name[8]; wait_queue_head_t wait; - struct list_head list; + struct list_head client_list; struct input_handle handle; int x, y, pressure; struct ts_calibration cal; }; -struct tsdev_list { +struct tsdev_client { struct fasync_struct *fasync; struct list_head node; struct tsdev *tsdev; @@ -139,17 +139,18 @@ static struct tsdev *tsdev_table[TSDEV_MINORS/2]; static int tsdev_fasync(int fd, struct file *file, int on) { - struct tsdev_list *list = file->private_data; + struct tsdev_client *client = file->private_data; int retval; - retval = fasync_helper(fd, file, on, &list->fasync); + retval = fasync_helper(fd, file, on, &client->fasync); return retval < 0 ? retval : 0; } static int tsdev_open(struct inode *inode, struct file *file) { int i = iminor(inode) - TSDEV_MINOR_BASE; - struct tsdev_list *list; + struct tsdev_client *client; + struct tsdev *tsdev; printk(KERN_WARNING "tsdev (compaq touchscreen emulation) is scheduled " "for removal.\nSee Documentation/feature-removal-schedule.txt " @@ -158,19 +159,22 @@ static int tsdev_open(struct inode *inode, struct file *file) if (i >= TSDEV_MINORS) return -ENODEV; - if (!(list = kzalloc(sizeof(struct tsdev_list), GFP_KERNEL))) + tsdev = tsdev_table[i & TSDEV_MINOR_MASK]; + if (!tsdev || !tsdev->exist) + return -ENODEV; + + client = kzalloc(sizeof(struct tsdev_client), GFP_KERNEL); + if (!client) return -ENOMEM; - list->raw = (i >= TSDEV_MINORS/2) ? 1 : 0; + client->tsdev = tsdev; + client->raw = (i >= TSDEV_MINORS / 2) ? 1 : 0; + list_add_tail(&client->node, &tsdev->client_list); - i &= TSDEV_MINOR_MASK; - list->tsdev = tsdev_table[i]; - list_add_tail(&list->node, &tsdev_table[i]->list); - file->private_data = list; + if (!tsdev->open++ && tsdev->exist) + input_open_device(&tsdev->handle); - if (!list->tsdev->open++) - if (list->tsdev->exist) - input_open_device(&list->tsdev->handle); + file->private_data = client; return 0; } @@ -182,45 +186,48 @@ static void tsdev_free(struct tsdev *tsdev) static int tsdev_release(struct inode *inode, struct file *file) { - struct tsdev_list *list = file->private_data; + struct tsdev_client *client = file->private_data; + struct tsdev *tsdev = client->tsdev; tsdev_fasync(-1, file, 0); - list_del(&list->node); - if (!--list->tsdev->open) { - if (list->tsdev->exist) - input_close_device(&list->tsdev->handle); + list_del(&client->node); + kfree(client); + + if (!--tsdev->open) { + if (tsdev->exist) + input_close_device(&tsdev->handle); else - tsdev_free(list->tsdev); + tsdev_free(tsdev); } - kfree(list); + return 0; } static ssize_t tsdev_read(struct file *file, char __user *buffer, size_t count, - loff_t * ppos) + loff_t *ppos) { - struct tsdev_list *list = file->private_data; + struct tsdev_client *client = file->private_data; + struct tsdev *tsdev = client->tsdev; int retval = 0; - if (list->head == list->tail && list->tsdev->exist && (file->f_flags & O_NONBLOCK)) + if (client->head == client->tail && tsdev->exist && (file->f_flags & O_NONBLOCK)) return -EAGAIN; - retval = wait_event_interruptible(list->tsdev->wait, - list->head != list->tail || !list->tsdev->exist); - + retval = wait_event_interruptible(tsdev->wait, + client->head != client->tail || !tsdev->exist); if (retval) return retval; - if (!list->tsdev->exist) + if (!tsdev->exist) return -ENODEV; - while (list->head != list->tail && + while (client->head != client->tail && retval + sizeof (struct ts_event) <= count) { - if (copy_to_user (buffer + retval, list->event + list->tail, + if (copy_to_user (buffer + retval, client->event + client->tail, sizeof (struct ts_event))) return -EFAULT; - list->tail = (list->tail + 1) & (TSDEV_BUFFER_SIZE - 1); + client->tail = (client->tail + 1) & (TSDEV_BUFFER_SIZE - 1); retval += sizeof (struct ts_event); } @@ -228,20 +235,21 @@ static ssize_t tsdev_read(struct file *file, char __user *buffer, size_t count, } /* No kernel lock - fine */ -static unsigned int tsdev_poll(struct file *file, poll_table * wait) +static unsigned int tsdev_poll(struct file *file, poll_table *wait) { - struct tsdev_list *list = file->private_data; + struct tsdev_client *client = file->private_data; + struct tsdev *tsdev = client->tsdev; - poll_wait(file, &list->tsdev->wait, wait); - return ((list->head == list->tail) ? 0 : (POLLIN | POLLRDNORM)) | - (list->tsdev->exist ? 0 : (POLLHUP | POLLERR)); + poll_wait(file, &tsdev->wait, wait); + return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) | + (tsdev->exist ? 0 : (POLLHUP | POLLERR)); } static int tsdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { - struct tsdev_list *list = file->private_data; - struct tsdev *tsdev = list->tsdev; + struct tsdev_client *client = file->private_data; + struct tsdev *tsdev = client->tsdev; int retval = 0; switch (cmd) { @@ -279,7 +287,7 @@ static void tsdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) { struct tsdev *tsdev = handle->private; - struct tsdev_list *list; + struct tsdev_client *client; struct timeval time; switch (type) { @@ -343,18 +351,18 @@ static void tsdev_event(struct input_handle *handle, unsigned int type, if (type != EV_SYN || code != SYN_REPORT) return; - list_for_each_entry(list, &tsdev->list, node) { + list_for_each_entry(client, &tsdev->client_list, node) { int x, y, tmp; do_gettimeofday(&time); - list->event[list->head].millisecs = time.tv_usec / 100; - list->event[list->head].pressure = tsdev->pressure; + client->event[client->head].millisecs = time.tv_usec / 100; + client->event[client->head].pressure = tsdev->pressure; x = tsdev->x; y = tsdev->y; /* Calibration */ - if (!list->raw) { + if (!client->raw) { x = ((x * tsdev->cal.xscale) >> 8) + tsdev->cal.xtrans; y = ((y * tsdev->cal.yscale) >> 8) + tsdev->cal.ytrans; if (tsdev->cal.xyswap) { @@ -362,10 +370,10 @@ static void tsdev_event(struct input_handle *handle, unsigned int type, } } - list->event[list->head].x = x; - list->event[list->head].y = y; - list->head = (list->head + 1) & (TSDEV_BUFFER_SIZE - 1); - kill_fasync(&list->fasync, SIGIO, POLL_IN); + client->event[client->head].x = x; + client->event[client->head].y = y; + client->head = (client->head + 1) & (TSDEV_BUFFER_SIZE - 1); + kill_fasync(&client->fasync, SIGIO, POLL_IN); } wake_up_interruptible(&tsdev->wait); } @@ -390,7 +398,7 @@ static int tsdev_connect(struct input_handler *handler, struct input_dev *dev, if (!tsdev) return -ENOMEM; - INIT_LIST_HEAD(&tsdev->list); + INIT_LIST_HEAD(&tsdev->client_list); init_waitqueue_head(&tsdev->wait); sprintf(tsdev->name, "ts%d", minor); @@ -451,7 +459,7 @@ static int tsdev_connect(struct input_handler *handler, struct input_dev *dev, static void tsdev_disconnect(struct input_handle *handle) { struct tsdev *tsdev = handle->private; - struct tsdev_list *list; + struct tsdev_client *client; input_unregister_handle(handle); @@ -463,8 +471,8 @@ static void tsdev_disconnect(struct input_handle *handle) if (tsdev->open) { input_close_device(handle); wake_up_interruptible(&tsdev->wait); - list_for_each_entry(list, &tsdev->list, node) - kill_fasync(&list->fasync, SIGIO, POLL_HUP); + list_for_each_entry(client, &tsdev->client_list, node) + kill_fasync(&client->fasync, SIGIO, POLL_HUP); } else tsdev_free(tsdev); } -- cgit v1.2.3-59-g8ed1b From d542ed82fdc72cf63549deec19e86ee4addf2499 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 12 Apr 2007 01:30:15 -0400 Subject: Input: handlers - handle errors from input_open_device() Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 11 ++++- drivers/input/joydev.c | 11 ++++- drivers/input/mousedev.c | 114 +++++++++++++++++++++++++++++++++-------------- drivers/input/tsdev.c | 11 ++++- 4 files changed, 107 insertions(+), 40 deletions(-) (limited to 'drivers/input/mousedev.c') diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 8a4cce5c7806..6cff8096d56a 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -130,6 +130,7 @@ static int evdev_open(struct inode *inode, struct file *file) struct evdev_client *client; struct evdev *evdev; int i = iminor(inode) - EVDEV_MINOR_BASE; + int error; if (i >= EVDEV_MINORS) return -ENODEV; @@ -146,8 +147,14 @@ static int evdev_open(struct inode *inode, struct file *file) client->evdev = evdev; list_add_tail(&client->node, &evdev->client_list); - if (!evdev->open++ && evdev->exist) - input_open_device(&evdev->handle); + if (!evdev->open++ && evdev->exist) { + error = input_open_device(&evdev->handle); + if (error) { + list_del(&client->node); + kfree(client); + return error; + } + } file->private_data = client; return 0; diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c index 09b8223de5ec..4f37224d2268 100644 --- a/drivers/input/joydev.c +++ b/drivers/input/joydev.c @@ -170,6 +170,7 @@ static int joydev_open(struct inode *inode, struct file *file) struct joydev_client *client; struct joydev *joydev; int i = iminor(inode) - JOYDEV_MINOR_BASE; + int error; if (i >= JOYDEV_MINORS) return -ENODEV; @@ -185,8 +186,14 @@ static int joydev_open(struct inode *inode, struct file *file) client->joydev = joydev; list_add_tail(&client->node, &joydev->client_list); - if (!joydev->open++ && joydev->exist) - input_open_device(&joydev->handle); + if (!joydev->open++ && joydev->exist) { + error = input_open_device(&joydev->handle); + if (error) { + list_del(&client->node); + kfree(client); + return error; + } + } file->private_data = client; return 0; diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index f6a62687d9e4..764970f5da2e 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -66,6 +66,9 @@ struct mousedev { struct list_head client_list; struct input_handle handle; + struct list_head mixdev_node; + int mixdev_open; + struct mousedev_hw_data packet; unsigned int pkt_count; int old_x[4], old_y[4]; @@ -111,6 +114,7 @@ static struct input_handler mousedev_handler; static struct mousedev *mousedev_table[MOUSEDEV_MINORS]; static struct mousedev mousedev_mix; +static LIST_HEAD(mousedev_mix_list); #define fx(i) (mousedev->old_x[(mousedev->pkt_count - (i)) & 03]) #define fy(i) (mousedev->old_y[(mousedev->pkt_count - (i)) & 03]) @@ -364,18 +368,63 @@ static void mousedev_free(struct mousedev *mousedev) kfree(mousedev); } -static void mixdev_release(void) +static int mixdev_add_device(struct mousedev *mousedev) { - struct input_handle *handle; + int error; - list_for_each_entry(handle, &mousedev_handler.h_list, h_node) { - struct mousedev *mousedev = handle->private; + if (mousedev_mix.open) { + error = input_open_device(&mousedev->handle); + if (error) + return error; - if (!mousedev->open) { - if (mousedev->exist) - input_close_device(&mousedev->handle); - else - mousedev_free(mousedev); + mousedev->open++; + mousedev->mixdev_open++; + } + + list_add_tail(&mousedev->mixdev_node, &mousedev_mix_list); + + return 0; +} + +static void mixdev_remove_device(struct mousedev *mousedev) +{ + if (mousedev->mixdev_open) { + mousedev->mixdev_open = 0; + if (!--mousedev->open && mousedev->exist) + input_close_device(&mousedev->handle); + } + + list_del_init(&mousedev->mixdev_node); +} + +static void mixdev_open_devices(void) +{ + struct mousedev *mousedev; + + list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) { + if (mousedev->exist && !mousedev->open) { + if (input_open_device(&mousedev->handle)) + continue; + + mousedev->open++; + mousedev->mixdev_open++; + } + } +} + +static void mixdev_close_devices(void) +{ + struct mousedev *mousedev, *next; + + list_for_each_entry_safe(mousedev, next, &mousedev_mix_list, mixdev_node) { + if (mousedev->mixdev_open) { + mousedev->mixdev_open = 0; + if (!--mousedev->open) { + if (mousedev->exist) + input_close_device(&mousedev->handle); + else + mousedev_free(mousedev); + } } } } @@ -392,23 +441,22 @@ static int mousedev_release(struct inode *inode, struct file *file) if (!--mousedev->open) { if (mousedev->minor == MOUSEDEV_MIX) - mixdev_release(); - else if (!mousedev_mix.open) { - if (mousedev->exist) - input_close_device(&mousedev->handle); - else - mousedev_free(mousedev); - } + mixdev_close_devices(); + else if (mousedev->exist) + input_close_device(&mousedev->handle); + else + mousedev_free(mousedev); } return 0; } + static int mousedev_open(struct inode *inode, struct file *file) { struct mousedev_client *client; - struct input_handle *handle; struct mousedev *mousedev; + int error; int i; #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX @@ -436,15 +484,16 @@ static int mousedev_open(struct inode *inode, struct file *file) list_add_tail(&client->node, &mousedev->client_list); if (!mousedev->open++) { - if (mousedev->minor == MOUSEDEV_MIX) { - list_for_each_entry(handle, &mousedev_handler.h_list, h_node) { - struct mousedev *md = handle->private; - if (!md->open && md->exist) - input_open_device(handle); + if (mousedev->minor == MOUSEDEV_MIX) + mixdev_open_devices(); + else if (mousedev->exist) { + error = input_open_device(&mousedev->handle); + if (error) { + list_del(&client->node); + kfree(client); + return error; } - } else - if (!mousedev_mix.open && mousedev->exist) - input_open_device(&mousedev->handle); + } } file->private_data = client; @@ -683,11 +732,9 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev if (error) goto err_remove_link; - if (mousedev_mix.open) { - error = input_open_device(&mousedev->handle); - if (error) - goto err_unregister_handle; - } + error = mixdev_add_device(mousedev); + if (error) + goto err_unregister_handle; return 0; @@ -715,16 +762,15 @@ static void mousedev_disconnect(struct input_handle *handle) MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + mousedev->minor)); mousedev->exist = 0; + mixdev_remove_device(mousedev); + if (mousedev->open) { input_close_device(handle); wake_up_interruptible(&mousedev->wait); list_for_each_entry(client, &mousedev->client_list, node) kill_fasync(&client->fasync, SIGIO, POLL_HUP); - } else { - if (mousedev_mix.open) - input_close_device(handle); + } else mousedev_free(mousedev); - } } static const struct input_device_id mousedev_ids[] = { diff --git a/drivers/input/tsdev.c b/drivers/input/tsdev.c index fbef35d2d76c..8e2d2c924adf 100644 --- a/drivers/input/tsdev.c +++ b/drivers/input/tsdev.c @@ -151,6 +151,7 @@ static int tsdev_open(struct inode *inode, struct file *file) int i = iminor(inode) - TSDEV_MINOR_BASE; struct tsdev_client *client; struct tsdev *tsdev; + int error; printk(KERN_WARNING "tsdev (compaq touchscreen emulation) is scheduled " "for removal.\nSee Documentation/feature-removal-schedule.txt " @@ -171,8 +172,14 @@ static int tsdev_open(struct inode *inode, struct file *file) client->raw = (i >= TSDEV_MINORS / 2) ? 1 : 0; list_add_tail(&client->node, &tsdev->client_list); - if (!tsdev->open++ && tsdev->exist) - input_open_device(&tsdev->handle); + if (!tsdev->open++ && tsdev->exist) { + error = input_open_device(&tsdev->handle); + if (error) { + list_del(&client->node); + kfree(client); + return error; + } + } file->private_data = client; return 0; -- cgit v1.2.3-59-g8ed1b From 0d9d93c411c9351ba186f5ec910b10da7c1d9d14 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 12 Apr 2007 01:31:55 -0400 Subject: Input: mousedev - fix sudden warps with touchpads Pete Zaitcev reports that with his touchpad, if he lifts the finger and places it elsewhere, the pointer sometimes warps dramatically. This happens because we don't store coordinates unless we detect a touch so sometimes we have stale coordinates in queue (from where the finger left the pad) and averaging makes cursor to jump across the screen. The solution is to always store the latest coordinates. Signed-off-by: Dmitry Torokhov --- drivers/input/mousedev.c | 51 ++++++++++++++++++++++++------------------------ 1 file changed, 26 insertions(+), 25 deletions(-) (limited to 'drivers/input/mousedev.c') diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 764970f5da2e..3b8011c56c86 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -124,32 +124,33 @@ static void mousedev_touchpad_event(struct input_dev *dev, struct mousedev *mous int size, tmp; enum { FRACTION_DENOM = 128 }; - if (mousedev->touch) { - size = dev->absmax[ABS_X] - dev->absmin[ABS_X]; - if (size == 0) - size = 256 * 2; - - switch (code) { - case ABS_X: - fx(0) = value; - if (mousedev->pkt_count >= 2) { - tmp = ((value - fx(2)) * (256 * FRACTION_DENOM)) / size; - tmp += mousedev->frac_dx; - mousedev->packet.dx = tmp / FRACTION_DENOM; - mousedev->frac_dx = tmp - mousedev->packet.dx * FRACTION_DENOM; - } - break; + switch (code) { + case ABS_X: + fx(0) = value; + if (mousedev->touch && mousedev->pkt_count >= 2) { + size = dev->absmax[ABS_X] - dev->absmin[ABS_X]; + if (size == 0) + size = 256 * 2; + tmp = ((value - fx(2)) * (256 * FRACTION_DENOM)) / size; + tmp += mousedev->frac_dx; + mousedev->packet.dx = tmp / FRACTION_DENOM; + mousedev->frac_dx = tmp - mousedev->packet.dx * FRACTION_DENOM; + } + break; - case ABS_Y: - fy(0) = value; - if (mousedev->pkt_count >= 2) { - tmp = -((value - fy(2)) * (256 * FRACTION_DENOM)) / size; - tmp += mousedev->frac_dy; - mousedev->packet.dy = tmp / FRACTION_DENOM; - mousedev->frac_dy = tmp - mousedev->packet.dy * FRACTION_DENOM; - } - break; - } + case ABS_Y: + fy(0) = value; + if (mousedev->touch && mousedev->pkt_count >= 2) { + /* use X size to keep the same scale */ + size = dev->absmax[ABS_X] - dev->absmin[ABS_X]; + if (size == 0) + size = 256 * 2; + tmp = -((value - fy(2)) * (256 * FRACTION_DENOM)) / size; + tmp += mousedev->frac_dy; + mousedev->packet.dy = tmp / FRACTION_DENOM; + mousedev->frac_dy = tmp - mousedev->packet.dy * FRACTION_DENOM; + } + break; } } -- cgit v1.2.3-59-g8ed1b