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-rw-r--r--drivers/staging/most/Makefile1
-rw-r--r--drivers/staging/most/cdev/Makefile1
-rw-r--r--drivers/staging/most/cdev/cdev.c5
-rw-r--r--drivers/staging/most/configfs.c59
-rw-r--r--drivers/staging/most/core.c204
-rw-r--r--drivers/staging/most/dim2/Makefile1
-rw-r--r--drivers/staging/most/dim2/dim2.c5
-rw-r--r--drivers/staging/most/i2c/Makefile1
-rw-r--r--drivers/staging/most/i2c/i2c.c2
-rw-r--r--drivers/staging/most/most.h (renamed from drivers/staging/most/core.h)30
-rw-r--r--drivers/staging/most/net/Makefile1
-rw-r--r--drivers/staging/most/net/net.c17
-rw-r--r--drivers/staging/most/sound/Makefile1
-rw-r--r--drivers/staging/most/sound/sound.c54
-rw-r--r--drivers/staging/most/usb/Makefile1
-rw-r--r--drivers/staging/most/usb/usb.c26
-rw-r--r--drivers/staging/most/video/Makefile1
-rw-r--r--drivers/staging/most/video/video.c6
18 files changed, 188 insertions, 228 deletions
diff --git a/drivers/staging/most/Makefile b/drivers/staging/most/Makefile
index 85ea5a434ced..20a99ecb37c4 100644
--- a/drivers/staging/most/Makefile
+++ b/drivers/staging/most/Makefile
@@ -2,7 +2,6 @@
obj-$(CONFIG_MOST) += most_core.o
most_core-y := core.o
most_core-y += configfs.o
-ccflags-y += -I $(srctree)/drivers/staging/
obj-$(CONFIG_MOST_CDEV) += cdev/
obj-$(CONFIG_MOST_NET) += net/
diff --git a/drivers/staging/most/cdev/Makefile b/drivers/staging/most/cdev/Makefile
index 9f4a8b8c9c27..ef90cd71994a 100644
--- a/drivers/staging/most/cdev/Makefile
+++ b/drivers/staging/most/cdev/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_CDEV) += most_cdev.o
most_cdev-objs := cdev.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/cdev/cdev.c b/drivers/staging/most/cdev/cdev.c
index f880147c82fd..71943d17f825 100644
--- a/drivers/staging/most/cdev/cdev.c
+++ b/drivers/staging/most/cdev/cdev.c
@@ -16,7 +16,8 @@
#include <linux/kfifo.h>
#include <linux/uaccess.h>
#include <linux/idr.h>
-#include "most/core.h"
+
+#include "../most.h"
#define CHRDEV_REGION_SIZE 50
@@ -25,7 +26,7 @@ static struct cdev_component {
struct ida minor_id;
unsigned int major;
struct class *class;
- struct core_component cc;
+ struct most_component cc;
} comp;
struct comp_channel {
diff --git a/drivers/staging/most/configfs.c b/drivers/staging/most/configfs.c
index 34a9fb53985c..9a961222f458 100644
--- a/drivers/staging/most/configfs.c
+++ b/drivers/staging/most/configfs.c
@@ -10,7 +10,10 @@
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/configfs.h>
-#include <most/core.h>
+
+#include "most.h"
+
+#define MAX_STRING_SIZE 80
struct mdev_link {
struct config_item item;
@@ -22,13 +25,13 @@ struct mdev_link {
u16 subbuffer_size;
u16 packets_per_xact;
u16 dbr_size;
- char datatype[PAGE_SIZE];
- char direction[PAGE_SIZE];
- char name[PAGE_SIZE];
- char device[PAGE_SIZE];
- char channel[PAGE_SIZE];
- char comp[PAGE_SIZE];
- char comp_params[PAGE_SIZE];
+ char datatype[MAX_STRING_SIZE];
+ char direction[MAX_STRING_SIZE];
+ char name[MAX_STRING_SIZE];
+ char device[MAX_STRING_SIZE];
+ char channel[MAX_STRING_SIZE];
+ char comp[MAX_STRING_SIZE];
+ char comp_params[MAX_STRING_SIZE];
};
static struct list_head mdev_link_list;
@@ -125,6 +128,8 @@ static ssize_t mdev_link_create_link_store(struct config_item *item,
return ret;
list_add_tail(&mdev_link->list, &mdev_link_list);
mdev_link->create_link = tmp;
+ mdev_link->destroy_link = false;
+
return count;
}
@@ -140,13 +145,16 @@ static ssize_t mdev_link_destroy_link_store(struct config_item *item,
return ret;
if (!tmp)
return count;
- mdev_link->destroy_link = tmp;
+
ret = most_remove_link(mdev_link->device, mdev_link->channel,
mdev_link->comp);
if (ret)
return ret;
if (!list_empty(&mdev_link_list))
list_del(&mdev_link->list);
+
+ mdev_link->destroy_link = tmp;
+
return count;
}
@@ -197,7 +205,7 @@ static ssize_t mdev_link_device_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strcpy(mdev_link->device, page);
+ strlcpy(mdev_link->device, page, sizeof(mdev_link->device));
strim(mdev_link->device);
return count;
}
@@ -212,7 +220,7 @@ static ssize_t mdev_link_channel_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strcpy(mdev_link->channel, page);
+ strlcpy(mdev_link->channel, page, sizeof(mdev_link->channel));
strim(mdev_link->channel);
return count;
}
@@ -227,7 +235,8 @@ static ssize_t mdev_link_comp_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strcpy(mdev_link->comp, page);
+ strlcpy(mdev_link->comp, page, sizeof(mdev_link->comp));
+ strim(mdev_link->comp);
return count;
}
@@ -242,7 +251,8 @@ static ssize_t mdev_link_comp_params_store(struct config_item *item,
{
struct mdev_link *mdev_link = to_mdev_link(item);
- strcpy(mdev_link->comp_params, page);
+ strlcpy(mdev_link->comp_params, page, sizeof(mdev_link->comp_params));
+ strim(mdev_link->comp_params);
return count;
}
@@ -373,13 +383,20 @@ static void mdev_link_release(struct config_item *item)
struct mdev_link *mdev_link = to_mdev_link(item);
int ret;
- if (!list_empty(&mdev_link_list)) {
- ret = most_remove_link(mdev_link->device, mdev_link->channel,
- mdev_link->comp);
- if (ret && (ret != -ENODEV))
- pr_err("Removing link failed.\n");
- list_del(&mdev_link->list);
+ if (mdev_link->destroy_link)
+ goto free_item;
+
+ ret = most_remove_link(mdev_link->device, mdev_link->channel,
+ mdev_link->comp);
+ if (ret) {
+ pr_err("Removing link failed.\n");
+ goto free_item;
}
+
+ if (!list_empty(&mdev_link_list))
+ list_del(&mdev_link->list);
+
+free_item:
kfree(to_mdev_link(item));
}
@@ -630,7 +647,7 @@ static struct most_sound most_sound_subsys = {
},
};
-int most_register_configfs_subsys(struct core_component *c)
+int most_register_configfs_subsys(struct most_component *c)
{
int ret;
@@ -674,7 +691,7 @@ void most_interface_register_notify(const char *mdev)
most_cfg_complete("sound");
}
-void most_deregister_configfs_subsys(struct core_component *c)
+void most_deregister_configfs_subsys(struct most_component *c)
{
if (!strcmp(c->name, "cdev"))
configfs_unregister_subsystem(&most_cdev.subsys);
diff --git a/drivers/staging/most/core.c b/drivers/staging/most/core.c
index 51a6b41d5b82..0c4ae6920d77 100644
--- a/drivers/staging/most/core.c
+++ b/drivers/staging/most/core.c
@@ -2,10 +2,9 @@
/*
* core.c - Implementation of core module of MOST Linux driver stack
*
- * Copyright (C) 2013-2015 Microchip Technology Germany II GmbH & Co. KG
+ * Copyright (C) 2013-2020 Microchip Technology Germany II GmbH & Co. KG
*/
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/slab.h>
@@ -21,25 +20,18 @@
#include <linux/kthread.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
-#include <most/core.h>
+
+#include "most.h"
#define MAX_CHANNELS 64
#define STRING_SIZE 80
static struct ida mdev_id;
static int dummy_num_buffers;
-
-static struct mostcore {
- struct device dev;
- struct device_driver drv;
- struct bus_type bus;
- struct list_head comp_list;
-} mc;
-
-#define to_driver(d) container_of(d, struct mostcore, drv)
+static struct list_head comp_list;
struct pipe {
- struct core_component *comp;
+ struct most_component *comp;
int refs;
int num_buffers;
};
@@ -151,7 +143,7 @@ static void flush_channel_fifos(struct most_channel *c)
spin_unlock_irqrestore(&c->fifo_lock, hf_flags);
if (unlikely((!list_empty(&c->fifo) || !list_empty(&c->halt_fifo))))
- pr_info("WARN: fifo | trash fifo not empty\n");
+ dev_warn(&c->dev, "Channel or trash fifo not empty\n");
}
/**
@@ -402,7 +394,7 @@ static ssize_t description_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct most_interface *iface = to_most_interface(dev);
+ struct most_interface *iface = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%s\n", iface->description);
}
@@ -411,7 +403,7 @@ static ssize_t interface_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- struct most_interface *iface = to_most_interface(dev);
+ struct most_interface *iface = dev_get_drvdata(dev);
switch (iface->interface) {
case ITYPE_LOOPBACK:
@@ -454,11 +446,11 @@ static const struct attribute_group *interface_attr_groups[] = {
NULL,
};
-static struct core_component *match_component(char *name)
+static struct most_component *match_component(char *name)
{
- struct core_component *comp;
+ struct most_component *comp;
- list_for_each_entry(comp, &mc.comp_list, list) {
+ list_for_each_entry(comp, &comp_list, list) {
if (!strcmp(comp->name, name))
return comp;
}
@@ -476,7 +468,7 @@ static int print_links(struct device *dev, void *data)
int offs = d->offs;
char *buf = d->buf;
struct most_channel *c;
- struct most_interface *iface = to_most_interface(dev);
+ struct most_interface *iface = dev_get_drvdata(dev);
list_for_each_entry(c, &iface->p->channel_list, list) {
if (c->pipe0.comp) {
@@ -484,7 +476,7 @@ static int print_links(struct device *dev, void *data)
PAGE_SIZE - offs,
"%s:%s:%s\n",
c->pipe0.comp->name,
- dev_name(&iface->dev),
+ dev_name(iface->dev),
dev_name(&c->dev));
}
if (c->pipe1.comp) {
@@ -492,7 +484,7 @@ static int print_links(struct device *dev, void *data)
PAGE_SIZE - offs,
"%s:%s:%s\n",
c->pipe1.comp->name,
- dev_name(&iface->dev),
+ dev_name(iface->dev),
dev_name(&c->dev));
}
}
@@ -500,20 +492,33 @@ static int print_links(struct device *dev, void *data)
return 0;
}
+static int most_match(struct device *dev, struct device_driver *drv)
+{
+ if (!strcmp(dev_name(dev), "most"))
+ return 0;
+ else
+ return 1;
+}
+
+static struct bus_type mostbus = {
+ .name = "most",
+ .match = most_match,
+};
+
static ssize_t links_show(struct device_driver *drv, char *buf)
{
struct show_links_data d = { .buf = buf };
- bus_for_each_dev(&mc.bus, NULL, &d, print_links);
+ bus_for_each_dev(&mostbus, NULL, &d, print_links);
return d.offs;
}
static ssize_t components_show(struct device_driver *drv, char *buf)
{
- struct core_component *comp;
+ struct most_component *comp;
int offs = 0;
- list_for_each_entry(comp, &mc.comp_list, list) {
+ list_for_each_entry(comp, &comp_list, list) {
offs += snprintf(buf + offs, PAGE_SIZE - offs, "%s\n",
comp->name);
}
@@ -531,10 +536,11 @@ static struct most_channel *get_channel(char *mdev, char *mdev_ch)
struct most_interface *iface;
struct most_channel *c, *tmp;
- dev = bus_find_device_by_name(&mc.bus, NULL, mdev);
+ dev = bus_find_device_by_name(&mostbus, NULL, mdev);
if (!dev)
return NULL;
- iface = to_most_interface(dev);
+ put_device(dev);
+ iface = dev_get_drvdata(dev);
list_for_each_entry_safe(c, tmp, &iface->p->channel_list, list) {
if (!strcmp(dev_name(&c->dev), mdev_ch))
return c;
@@ -544,12 +550,12 @@ static struct most_channel *get_channel(char *mdev, char *mdev_ch)
static
inline int link_channel_to_component(struct most_channel *c,
- struct core_component *comp,
+ struct most_component *comp,
char *name,
char *comp_param)
{
int ret;
- struct core_component **comp_ptr;
+ struct most_component **comp_ptr;
if (!c->pipe0.comp)
comp_ptr = &c->pipe0.comp;
@@ -623,7 +629,7 @@ int most_set_cfg_datatype(char *mdev, char *mdev_ch, char *buf)
}
if (i == ARRAY_SIZE(ch_data_type))
- pr_info("WARN: invalid attribute settings\n");
+ dev_warn(&c->dev, "Invalid attribute settings\n");
return 0;
}
@@ -642,7 +648,7 @@ int most_set_cfg_direction(char *mdev, char *mdev_ch, char *buf)
} else if (!strcmp(buf, "tx")) {
c->cfg.direction = MOST_CH_TX;
} else {
- pr_info("Invalid direction\n");
+ dev_err(&c->dev, "Invalid direction\n");
return -ENODATA;
}
return 0;
@@ -660,7 +666,7 @@ int most_set_cfg_packets_xact(char *mdev, char *mdev_ch, u16 val)
int most_cfg_complete(char *comp_name)
{
- struct core_component *comp;
+ struct most_component *comp;
comp = match_component(comp_name);
if (!comp)
@@ -673,7 +679,7 @@ int most_add_link(char *mdev, char *mdev_ch, char *comp_name, char *link_name,
char *comp_param)
{
struct most_channel *c = get_channel(mdev, mdev_ch);
- struct core_component *comp = match_component(comp_name);
+ struct most_component *comp = match_component(comp_name);
if (!c || !comp)
return -ENODEV;
@@ -684,7 +690,7 @@ int most_add_link(char *mdev, char *mdev_ch, char *comp_name, char *link_name,
int most_remove_link(char *mdev, char *mdev_ch, char *comp_name)
{
struct most_channel *c;
- struct core_component *comp;
+ struct most_component *comp;
comp = match_component(comp_name);
if (!comp)
@@ -722,13 +728,11 @@ static const struct attribute_group *mc_attr_groups[] = {
NULL,
};
-static int most_match(struct device *dev, struct device_driver *drv)
-{
- if (!strcmp(dev_name(dev), "most"))
- return 0;
- else
- return 1;
-}
+static struct device_driver mostbus_driver = {
+ .name = "most_core",
+ .bus = &mostbus,
+ .groups = mc_attr_groups,
+};
static inline void trash_mbo(struct mbo *mbo)
{
@@ -795,7 +799,7 @@ static int hdm_enqueue_thread(void *data)
mutex_unlock(&c->nq_mutex);
if (unlikely(ret)) {
- pr_err("hdm enqueue failed\n");
+ dev_err(&c->dev, "Buffer enqueue failed\n");
nq_hdm_mbo(mbo);
c->hdm_enqueue_task = NULL;
return 0;
@@ -922,7 +926,7 @@ flush_fifos:
void most_submit_mbo(struct mbo *mbo)
{
if (WARN_ONCE(!mbo || !mbo->context,
- "bad mbo or missing channel reference\n"))
+ "Bad buffer or missing channel reference\n"))
return;
nq_hdm_mbo(mbo);
@@ -941,8 +945,6 @@ static void most_write_completion(struct mbo *mbo)
struct most_channel *c;
c = mbo->context;
- if (mbo->status == MBO_E_INVAL)
- pr_info("WARN: Tx MBO status: invalid\n");
if (unlikely(c->is_poisoned || (mbo->status == MBO_E_CLOSE)))
trash_mbo(mbo);
else
@@ -950,7 +952,7 @@ static void most_write_completion(struct mbo *mbo)
}
int channel_has_mbo(struct most_interface *iface, int id,
- struct core_component *comp)
+ struct most_component *comp)
{
struct most_channel *c = iface->p->channel[id];
unsigned long flags;
@@ -981,7 +983,7 @@ EXPORT_SYMBOL_GPL(channel_has_mbo);
* Returns a pointer to MBO on success or NULL otherwise.
*/
struct mbo *most_get_mbo(struct most_interface *iface, int id,
- struct core_component *comp)
+ struct most_component *comp)
{
struct mbo *mbo;
struct most_channel *c;
@@ -1087,7 +1089,7 @@ static void most_read_completion(struct mbo *mbo)
* Returns 0 on success or error code otherwise.
*/
int most_start_channel(struct most_interface *iface, int id,
- struct core_component *comp)
+ struct most_component *comp)
{
int num_buffer;
int ret;
@@ -1101,14 +1103,14 @@ int most_start_channel(struct most_interface *iface, int id,
goto out; /* already started by another component */
if (!try_module_get(iface->mod)) {
- pr_info("failed to acquire HDM lock\n");
+ dev_err(&c->dev, "Failed to acquire HDM lock\n");
mutex_unlock(&c->start_mutex);
return -ENOLCK;
}
c->cfg.extra_len = 0;
if (c->iface->configure(c->iface, c->channel_id, &c->cfg)) {
- pr_info("channel configuration failed. Go check settings...\n");
+ dev_err(&c->dev, "Channel configuration failed. Go check settings...\n");
ret = -EINVAL;
goto err_put_module;
}
@@ -1157,7 +1159,7 @@ EXPORT_SYMBOL_GPL(most_start_channel);
* @comp: driver component
*/
int most_stop_channel(struct most_interface *iface, int id,
- struct core_component *comp)
+ struct most_component *comp)
{
struct most_channel *c;
@@ -1182,8 +1184,8 @@ int most_stop_channel(struct most_interface *iface, int id,
c->is_poisoned = true;
if (c->iface->poison_channel(c->iface, c->channel_id)) {
- pr_err("Cannot stop channel %d of mdev %s\n", c->channel_id,
- c->iface->description);
+ dev_err(&c->dev, "Failed to stop channel %d of interface %s\n", c->channel_id,
+ c->iface->description);
mutex_unlock(&c->start_mutex);
return -EAGAIN;
}
@@ -1192,7 +1194,7 @@ int most_stop_channel(struct most_interface *iface, int id,
#ifdef CMPL_INTERRUPTIBLE
if (wait_for_completion_interruptible(&c->cleanup)) {
- pr_info("Interrupted while clean up ch %d\n", c->channel_id);
+ dev_err(&c->dev, "Interrupted while cleaning up channel %d\n", c->channel_id);
mutex_unlock(&c->start_mutex);
return -EINTR;
}
@@ -1215,14 +1217,13 @@ EXPORT_SYMBOL_GPL(most_stop_channel);
* most_register_component - registers a driver component with the core
* @comp: driver component
*/
-int most_register_component(struct core_component *comp)
+int most_register_component(struct most_component *comp)
{
if (!comp) {
pr_err("Bad component\n");
return -EINVAL;
}
- list_add_tail(&comp->list, &mc.comp_list);
- pr_info("registered new core component %s\n", comp->name);
+ list_add_tail(&comp->list, &comp_list);
return 0;
}
EXPORT_SYMBOL_GPL(most_register_component);
@@ -1231,9 +1232,9 @@ static int disconnect_channels(struct device *dev, void *data)
{
struct most_interface *iface;
struct most_channel *c, *tmp;
- struct core_component *comp = data;
+ struct most_component *comp = data;
- iface = to_most_interface(dev);
+ iface = dev_get_drvdata(dev);
list_for_each_entry_safe(c, tmp, &iface->p->channel_list, list) {
if (c->pipe0.comp == comp || c->pipe1.comp == comp)
comp->disconnect_channel(c->iface, c->channel_id);
@@ -1249,28 +1250,24 @@ static int disconnect_channels(struct device *dev, void *data)
* most_deregister_component - deregisters a driver component with the core
* @comp: driver component
*/
-int most_deregister_component(struct core_component *comp)
+int most_deregister_component(struct most_component *comp)
{
if (!comp) {
pr_err("Bad component\n");
return -EINVAL;
}
- bus_for_each_dev(&mc.bus, NULL, comp, disconnect_channels);
+ bus_for_each_dev(&mostbus, NULL, comp, disconnect_channels);
list_del(&comp->list);
- pr_info("deregistering component %s\n", comp->name);
return 0;
}
EXPORT_SYMBOL_GPL(most_deregister_component);
-static void release_interface(struct device *dev)
-{
- pr_info("releasing interface dev %s...\n", dev_name(dev));
-}
-
static void release_channel(struct device *dev)
{
- pr_info("releasing channel dev %s...\n", dev_name(dev));
+ struct most_channel *c = to_channel(dev);
+
+ kfree(c);
}
/**
@@ -1288,13 +1285,13 @@ int most_register_interface(struct most_interface *iface)
if (!iface || !iface->enqueue || !iface->configure ||
!iface->poison_channel || (iface->num_channels > MAX_CHANNELS)) {
- pr_err("Bad interface or channel overflow\n");
+ dev_err(iface->dev, "Bad interface or channel overflow\n");
return -EINVAL;
}
id = ida_simple_get(&mdev_id, 0, 0, GFP_KERNEL);
if (id < 0) {
- pr_info("Failed to alloc mdev ID\n");
+ dev_err(iface->dev, "Failed to allocate device ID\n");
return id;
}
@@ -1307,14 +1304,13 @@ int most_register_interface(struct most_interface *iface)
INIT_LIST_HEAD(&iface->p->channel_list);
iface->p->dev_id = id;
strscpy(iface->p->name, iface->description, sizeof(iface->p->name));
- iface->dev.init_name = iface->p->name;
- iface->dev.bus = &mc.bus;
- iface->dev.parent = &mc.dev;
- iface->dev.groups = interface_attr_groups;
- iface->dev.release = release_interface;
- if (device_register(&iface->dev)) {
- pr_err("registering iface->dev failed\n");
+ iface->dev->bus = &mostbus;
+ iface->dev->groups = interface_attr_groups;
+ dev_set_drvdata(iface->dev, iface);
+ if (device_register(iface->dev)) {
+ dev_err(iface->dev, "Failed to register interface device\n");
kfree(iface->p);
+ put_device(iface->dev);
ida_simple_remove(&mdev_id, id);
return -ENOMEM;
}
@@ -1330,7 +1326,7 @@ int most_register_interface(struct most_interface *iface)
else
snprintf(c->name, STRING_SIZE, "%s", name_suffix);
c->dev.init_name = c->name;
- c->dev.parent = &iface->dev;
+ c->dev.parent = iface->dev;
c->dev.groups = channel_attr_groups;
c->dev.release = release_channel;
iface->p->channel[i] = c;
@@ -1356,26 +1352,23 @@ int most_register_interface(struct most_interface *iface)
mutex_init(&c->nq_mutex);
list_add_tail(&c->list, &iface->p->channel_list);
if (device_register(&c->dev)) {
- pr_err("registering c->dev failed\n");
+ dev_err(&c->dev, "Failed to register channel device\n");
goto err_free_most_channel;
}
}
- pr_info("registered new device mdev%d (%s)\n",
- id, iface->description);
most_interface_register_notify(iface->description);
return 0;
err_free_most_channel:
- kfree(c);
+ put_device(&c->dev);
err_free_resources:
while (i > 0) {
c = iface->p->channel[--i];
device_unregister(&c->dev);
- kfree(c);
}
kfree(iface->p);
- device_unregister(&iface->dev);
+ device_unregister(iface->dev);
ida_simple_remove(&mdev_id, id);
return -ENOMEM;
}
@@ -1393,8 +1386,6 @@ void most_deregister_interface(struct most_interface *iface)
int i;
struct most_channel *c;
- pr_info("deregistering device %s (%s)\n", dev_name(&iface->dev),
- iface->description);
for (i = 0; i < iface->num_channels; i++) {
c = iface->p->channel[i];
if (c->pipe0.comp)
@@ -1407,12 +1398,11 @@ void most_deregister_interface(struct most_interface *iface)
c->pipe1.comp = NULL;
list_del(&c->list);
device_unregister(&c->dev);
- kfree(c);
}
ida_simple_remove(&mdev_id, iface->p->dev_id);
kfree(iface->p);
- device_unregister(&iface->dev);
+ device_unregister(iface->dev);
}
EXPORT_SYMBOL_GPL(most_deregister_interface);
@@ -1462,57 +1452,35 @@ void most_resume_enqueue(struct most_interface *iface, int id)
}
EXPORT_SYMBOL_GPL(most_resume_enqueue);
-static void release_most_sub(struct device *dev)
-{
- pr_info("releasing most_subsystem\n");
-}
-
static int __init most_init(void)
{
int err;
- pr_info("init()\n");
- INIT_LIST_HEAD(&mc.comp_list);
+ INIT_LIST_HEAD(&comp_list);
ida_init(&mdev_id);
- mc.bus.name = "most",
- mc.bus.match = most_match,
- mc.drv.name = "most_core",
- mc.drv.bus = &mc.bus,
- mc.drv.groups = mc_attr_groups;
-
- err = bus_register(&mc.bus);
+ err = bus_register(&mostbus);
if (err) {
- pr_info("Cannot register most bus\n");
+ pr_err("Failed to register most bus\n");
return err;
}
- err = driver_register(&mc.drv);
+ err = driver_register(&mostbus_driver);
if (err) {
- pr_info("Cannot register core driver\n");
+ pr_err("Failed to register core driver\n");
goto err_unregister_bus;
}
- mc.dev.init_name = "most_bus";
- mc.dev.release = release_most_sub;
- if (device_register(&mc.dev)) {
- err = -ENOMEM;
- goto err_unregister_driver;
- }
configfs_init();
return 0;
-err_unregister_driver:
- driver_unregister(&mc.drv);
err_unregister_bus:
- bus_unregister(&mc.bus);
+ bus_unregister(&mostbus);
return err;
}
static void __exit most_exit(void)
{
- pr_info("exit core module\n");
- device_unregister(&mc.dev);
- driver_unregister(&mc.drv);
- bus_unregister(&mc.bus);
+ driver_unregister(&mostbus_driver);
+ bus_unregister(&mostbus);
ida_destroy(&mdev_id);
}
diff --git a/drivers/staging/most/dim2/Makefile b/drivers/staging/most/dim2/Makefile
index 116f04d69244..861adacf6c72 100644
--- a/drivers/staging/most/dim2/Makefile
+++ b/drivers/staging/most/dim2/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_DIM2) += most_dim2.o
most_dim2-objs := dim2.o hal.o sysfs.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c
index 64c979155a49..16593281fcda 100644
--- a/drivers/staging/most/dim2/dim2.c
+++ b/drivers/staging/most/dim2/dim2.c
@@ -21,7 +21,7 @@
#include <linux/sched.h>
#include <linux/kthread.h>
-#include "most/core.h"
+#include "../most.h"
#include "hal.h"
#include "errors.h"
#include "sysfs.h"
@@ -854,8 +854,9 @@ static int dim2_probe(struct platform_device *pdev)
dev->most_iface.poison_channel = poison_channel;
dev->most_iface.request_netinfo = request_netinfo;
dev->most_iface.driver_dev = &pdev->dev;
+ dev->most_iface.dev = &dev->dev;
dev->dev.init_name = "dim2_state";
- dev->dev.parent = &dev->most_iface.dev;
+ dev->dev.parent = &pdev->dev;
ret = most_register_interface(&dev->most_iface);
if (ret) {
diff --git a/drivers/staging/most/i2c/Makefile b/drivers/staging/most/i2c/Makefile
index 2b3769dc19e7..71099dd0f85b 100644
--- a/drivers/staging/most/i2c/Makefile
+++ b/drivers/staging/most/i2c/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_I2C) += most_i2c.o
most_i2c-objs := i2c.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/i2c/i2c.c b/drivers/staging/most/i2c/i2c.c
index 4a4fc1005932..2980f7065846 100644
--- a/drivers/staging/most/i2c/i2c.c
+++ b/drivers/staging/most/i2c/i2c.c
@@ -14,7 +14,7 @@
#include <linux/interrupt.h>
#include <linux/err.h>
-#include "most/core.h"
+#include "../most.h"
enum { CH_RX, CH_TX, NUM_CHANNELS };
diff --git a/drivers/staging/most/core.h b/drivers/staging/most/most.h
index 49859aef98df..232e01b7f5d2 100644
--- a/drivers/staging/most/core.h
+++ b/drivers/staging/most/most.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* most.h - API for component and adapter drivers
*
@@ -47,7 +47,7 @@ enum most_channel_data_type {
MOST_CH_SYNC = 1 << 5,
};
-enum mbo_status_flags {
+enum most_status_flags {
/* MBO was processed successfully (data was send or received )*/
MBO_SUCCESS = 0,
/* The MBO contains wrong or missing information. */
@@ -184,7 +184,7 @@ struct mbo {
dma_addr_t bus_address;
u16 buffer_length;
u16 processed_length;
- enum mbo_status_flags status;
+ enum most_status_flags status;
void (*complete)(struct mbo *mbo);
};
@@ -229,7 +229,7 @@ struct mbo {
* @priv Private field used by mostcore to store context information.
*/
struct most_interface {
- struct device dev;
+ struct device *dev;
struct device *driver_dev;
struct module *mod;
enum most_interface_type interface;
@@ -251,10 +251,8 @@ struct most_interface {
struct interface_private *p;
};
-#define to_most_interface(d) container_of(d, struct most_interface, dev)
-
/**
- * struct core_component - identifies a loadable component for the mostcore
+ * struct most_component - identifies a loadable component for the mostcore
* @list: list_head
* @name: component name
* @probe_channel: function for core to notify driver about channel connection
@@ -262,7 +260,7 @@ struct most_interface {
* @rx_completion: completion handler for received packets
* @tx_completion: completion handler for transmitted packets
*/
-struct core_component {
+struct most_component {
struct list_head list;
const char *name;
struct module *mod;
@@ -310,20 +308,20 @@ void most_stop_enqueue(struct most_interface *iface, int channel_idx);
* in wait fifo.
*/
void most_resume_enqueue(struct most_interface *iface, int channel_idx);
-int most_register_component(struct core_component *comp);
-int most_deregister_component(struct core_component *comp);
+int most_register_component(struct most_component *comp);
+int most_deregister_component(struct most_component *comp);
struct mbo *most_get_mbo(struct most_interface *iface, int channel_idx,
- struct core_component *comp);
+ struct most_component *comp);
void most_put_mbo(struct mbo *mbo);
int channel_has_mbo(struct most_interface *iface, int channel_idx,
- struct core_component *comp);
+ struct most_component *comp);
int most_start_channel(struct most_interface *iface, int channel_idx,
- struct core_component *comp);
+ struct most_component *comp);
int most_stop_channel(struct most_interface *iface, int channel_idx,
- struct core_component *comp);
+ struct most_component *comp);
int __init configfs_init(void);
-int most_register_configfs_subsys(struct core_component *comp);
-void most_deregister_configfs_subsys(struct core_component *comp);
+int most_register_configfs_subsys(struct most_component *comp);
+void most_deregister_configfs_subsys(struct most_component *comp);
int most_add_link(char *mdev, char *mdev_ch, char *comp_name, char *link_name,
char *comp_param);
int most_remove_link(char *mdev, char *mdev_ch, char *comp_name);
diff --git a/drivers/staging/most/net/Makefile b/drivers/staging/most/net/Makefile
index f0ac64dee71b..1582c97eb204 100644
--- a/drivers/staging/most/net/Makefile
+++ b/drivers/staging/most/net/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_NET) += most_net.o
most_net-objs := net.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/net/net.c b/drivers/staging/most/net/net.c
index 6cab1bb8956e..5547e36e09de 100644
--- a/drivers/staging/most/net/net.c
+++ b/drivers/staging/most/net/net.c
@@ -15,7 +15,8 @@
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/kobject.h>
-#include "most/core.h"
+
+#include "../most.h"
#define MEP_HDR_LEN 8
#define MDP_HDR_LEN 16
@@ -70,7 +71,7 @@ struct net_dev_context {
static struct list_head net_devices = LIST_HEAD_INIT(net_devices);
static struct mutex probe_disc_mt; /* ch->linked = true, most_nd_open */
static DEFINE_SPINLOCK(list_lock); /* list_head, ch->linked = false, dev_hold */
-static struct core_component comp;
+static struct most_component comp;
static int skb_to_mamac(const struct sk_buff *skb, struct mbo *mbo)
{
@@ -81,6 +82,11 @@ static int skb_to_mamac(const struct sk_buff *skb, struct mbo *mbo)
unsigned int payload_len = skb->len - ETH_HLEN;
unsigned int mdp_len = payload_len + MDP_HDR_LEN;
+ if (mdp_len < skb->len) {
+ pr_err("drop: too large packet! (%u)\n", skb->len);
+ return -EINVAL;
+ }
+
if (mbo->buffer_length < mdp_len) {
pr_err("drop: too small buffer! (%d for %d)\n",
mbo->buffer_length, mdp_len);
@@ -128,6 +134,11 @@ static int skb_to_mep(const struct sk_buff *skb, struct mbo *mbo)
u8 *buff = mbo->virt_address;
unsigned int mep_len = skb->len + MEP_HDR_LEN;
+ if (mep_len < skb->len) {
+ pr_err("drop: too large packet! (%u)\n", skb->len);
+ return -EINVAL;
+ }
+
if (mbo->buffer_length < mep_len) {
pr_err("drop: too small buffer! (%d for %d)\n",
mbo->buffer_length, mep_len);
@@ -497,7 +508,7 @@ put_nd:
return ret;
}
-static struct core_component comp = {
+static struct most_component comp = {
.mod = THIS_MODULE,
.name = "net",
.probe_channel = comp_probe_channel,
diff --git a/drivers/staging/most/sound/Makefile b/drivers/staging/most/sound/Makefile
index a3d086c6ca70..f0cd9d8d213e 100644
--- a/drivers/staging/most/sound/Makefile
+++ b/drivers/staging/most/sound/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_SOUND) += most_sound.o
most_sound-objs := sound.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/sound/sound.c b/drivers/staging/most/sound/sound.c
index 723d0bd1cc21..44cf2334834f 100644
--- a/drivers/staging/most/sound/sound.c
+++ b/drivers/staging/most/sound/sound.c
@@ -17,12 +17,13 @@
#include <sound/pcm_params.h>
#include <linux/sched.h>
#include <linux/kthread.h>
-#include <most/core.h>
+
+#include "../most.h"
#define DRIVER_NAME "sound"
#define STRING_SIZE 80
-static struct core_component comp;
+static struct most_component comp;
/**
* struct channel - private structure to keep channel specific data
@@ -323,45 +324,6 @@ static int pcm_close(struct snd_pcm_substream *substream)
}
/**
- * pcm_hw_params - implements hw_params callback function for PCM middle layer
- * @substream: sub-stream pointer
- * @hw_params: contains the hardware parameters set by the application
- *
- * This is called when the hardware parameters is set by the application, that
- * is, once when the buffer size, the period size, the format, etc. are defined
- * for the PCM substream. Many hardware setups should be done is this callback,
- * including the allocation of buffers.
- *
- * Returns 0 on success or error code otherwise.
- */
-static int pcm_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *hw_params)
-{
- struct channel *channel = substream->private_data;
-
- if ((params_channels(hw_params) > channel->pcm_hardware.channels_max) ||
- (params_channels(hw_params) < channel->pcm_hardware.channels_min)) {
- pr_err("Requested number of channels not supported.\n");
- return -EINVAL;
- }
- return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
-}
-
-/**
- * pcm_hw_free - implements hw_free callback function for PCM middle layer
- * @substream: substream pointer
- *
- * This is called to release the resources allocated via hw_params.
- * This function will be always called before the close callback is called.
- *
- * Returns 0 on success or error code otherwise.
- */
-static int pcm_hw_free(struct snd_pcm_substream *substream)
-{
- return snd_pcm_lib_free_pages(substream);
-}
-
-/**
* pcm_prepare - implements prepare callback function for PCM middle layer
* @substream: substream pointer
*
@@ -462,9 +424,6 @@ static snd_pcm_uframes_t pcm_pointer(struct snd_pcm_substream *substream)
static const struct snd_pcm_ops pcm_ops = {
.open = pcm_open,
.close = pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = pcm_hw_params,
- .hw_free = pcm_hw_free,
.prepare = pcm_prepare,
.trigger = pcm_trigger,
.pointer = pcm_pointer,
@@ -661,8 +620,7 @@ skip_adpt_alloc:
pcm->private_data = channel;
strscpy(pcm->name, device_name, sizeof(pcm->name));
snd_pcm_set_ops(pcm, direction, &pcm_ops);
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC,
- NULL, 0, 0);
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
return 0;
@@ -779,9 +737,9 @@ static int audio_tx_completion(struct most_interface *iface, int channel_id)
}
/**
- * Initialization of the struct core_component
+ * Initialization of the struct most_component
*/
-static struct core_component comp = {
+static struct most_component comp = {
.mod = THIS_MODULE,
.name = DRIVER_NAME,
.probe_channel = audio_probe_channel,
diff --git a/drivers/staging/most/usb/Makefile b/drivers/staging/most/usb/Makefile
index 83cf2ead7122..c2b207339aec 100644
--- a/drivers/staging/most/usb/Makefile
+++ b/drivers/staging/most/usb/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_USB) += most_usb.o
most_usb-objs := usb.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/usb/usb.c b/drivers/staging/most/usb/usb.c
index 360cb5b7a10b..0bda88c4bc89 100644
--- a/drivers/staging/most/usb/usb.c
+++ b/drivers/staging/most/usb/usb.c
@@ -23,7 +23,8 @@
#include <linux/dma-mapping.h>
#include <linux/etherdevice.h>
#include <linux/uaccess.h>
-#include "most/core.h"
+
+#include "../most.h"
#define USB_MTU 512
#define NO_ISOCHRONOUS_URB 0
@@ -101,6 +102,7 @@ struct clear_hold_work {
* @poll_work_obj: work for polling link status
*/
struct most_dev {
+ struct device dev;
struct usb_device *usb_device;
struct most_interface iface;
struct most_channel_capability *cap;
@@ -122,6 +124,7 @@ struct most_dev {
};
#define to_mdev(d) container_of(d, struct most_dev, iface)
+#define to_mdev_from_dev(d) container_of(d, struct most_dev, dev)
#define to_mdev_from_work(w) container_of(w, struct most_dev, poll_work_obj)
static void wq_clear_halt(struct work_struct *wq_obj);
@@ -1022,6 +1025,12 @@ static void release_dci(struct device *dev)
kfree(dci);
}
+static void release_mdev(struct device *dev)
+{
+ struct most_dev *mdev = to_mdev_from_dev(dev);
+
+ kfree(mdev);
+}
/**
* hdm_probe - probe function of USB device driver
* @interface: Interface of the attached USB device
@@ -1060,6 +1069,7 @@ hdm_probe(struct usb_interface *interface, const struct usb_device_id *id)
mdev->link_stat_timer.expires = jiffies + (2 * HZ);
mdev->iface.mod = hdm_usb_fops.owner;
+ mdev->iface.dev = &mdev->dev;
mdev->iface.driver_dev = &interface->dev;
mdev->iface.interface = ITYPE_USB;
mdev->iface.configure = hdm_configure_channel;
@@ -1078,6 +1088,9 @@ hdm_probe(struct usb_interface *interface, const struct usb_device_id *id)
usb_dev->config->desc.bConfigurationValue,
usb_iface_desc->desc.bInterfaceNumber);
+ mdev->dev.init_name = mdev->description;
+ mdev->dev.parent = &interface->dev;
+ mdev->dev.release = release_mdev;
mdev->conf = kcalloc(num_endpoints, sizeof(*mdev->conf), GFP_KERNEL);
if (!mdev->conf)
goto err_free_mdev;
@@ -1151,7 +1164,7 @@ hdm_probe(struct usb_interface *interface, const struct usb_device_id *id)
}
mdev->dci->dev.init_name = "dci";
- mdev->dci->dev.parent = &mdev->iface.dev;
+ mdev->dci->dev.parent = get_device(mdev->iface.dev);
mdev->dci->dev.groups = dci_attr_groups;
mdev->dci->dev.release = release_dci;
if (device_register(&mdev->dci->dev)) {
@@ -1165,7 +1178,7 @@ hdm_probe(struct usb_interface *interface, const struct usb_device_id *id)
mutex_unlock(&mdev->io_mutex);
return 0;
err_free_dci:
- kfree(mdev->dci);
+ put_device(&mdev->dci->dev);
err_free_busy_urbs:
kfree(mdev->busy_urbs);
err_free_ep_address:
@@ -1175,7 +1188,7 @@ err_free_cap:
err_free_conf:
kfree(mdev->conf);
err_free_mdev:
- kfree(mdev);
+ put_device(&mdev->dev);
err_out_of_memory:
if (ret == 0 || ret == -ENOMEM) {
ret = -ENOMEM;
@@ -1205,14 +1218,15 @@ static void hdm_disconnect(struct usb_interface *interface)
del_timer_sync(&mdev->link_stat_timer);
cancel_work_sync(&mdev->poll_work_obj);
- device_unregister(&mdev->dci->dev);
+ if (mdev->dci)
+ device_unregister(&mdev->dci->dev);
most_deregister_interface(&mdev->iface);
kfree(mdev->busy_urbs);
kfree(mdev->cap);
kfree(mdev->conf);
kfree(mdev->ep_address);
- kfree(mdev);
+ put_device(&mdev->dev);
}
static struct usb_driver hdm_usb = {
diff --git a/drivers/staging/most/video/Makefile b/drivers/staging/most/video/Makefile
index 2d857d3cbcc8..856175fec8b6 100644
--- a/drivers/staging/most/video/Makefile
+++ b/drivers/staging/most/video/Makefile
@@ -2,4 +2,3 @@
obj-$(CONFIG_MOST_VIDEO) += most_video.o
most_video-objs := video.o
-ccflags-y += -I $(srctree)/drivers/staging/
diff --git a/drivers/staging/most/video/video.c b/drivers/staging/most/video/video.c
index 10c1ef7e3a3e..d32ae49d617b 100644
--- a/drivers/staging/most/video/video.c
+++ b/drivers/staging/most/video/video.c
@@ -21,11 +21,11 @@
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
-#include "most/core.h"
+#include "../most.h"
#define V4L2_CMP_MAX_INPUT 1
-static struct core_component comp;
+static struct most_component comp;
struct most_video_dev {
struct most_interface *iface;
@@ -527,7 +527,7 @@ static int comp_disconnect_channel(struct most_interface *iface,
return 0;
}
-static struct core_component comp = {
+static struct most_component comp = {
.mod = THIS_MODULE,
.name = "video",
.probe_channel = comp_probe_channel,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.