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Diffstat (limited to 'drivers/usb/gadget/function')
-rw-r--r--drivers/usb/gadget/function/f_fs.c7
-rw-r--r--drivers/usb/gadget/function/f_hid.c17
-rw-r--r--drivers/usb/gadget/function/f_midi.c68
-rw-r--r--drivers/usb/gadget/function/f_ncm.c2
-rw-r--r--drivers/usb/gadget/function/f_rndis.c20
-rw-r--r--drivers/usb/gadget/function/u_audio.c4
-rw-r--r--drivers/usb/gadget/function/u_ether.c2
-rw-r--r--drivers/usb/gadget/function/u_ether.h1
-rw-r--r--drivers/usb/gadget/function/u_ether_configfs.h35
-rw-r--r--drivers/usb/gadget/function/u_rndis.h4
-rw-r--r--drivers/usb/gadget/function/u_serial.c2
11 files changed, 140 insertions, 22 deletions
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index d21874b35cf6..9990944a7245 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -961,10 +961,9 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data)
/* In the meantime, endpoint got disabled or changed. */
ret = -ESHUTDOWN;
} else if (halt) {
- /* Halt */
- if (likely(epfile->ep == ep) && !WARN_ON(!ep->ep))
- usb_ep_set_halt(ep->ep);
- ret = -EBADMSG;
+ ret = usb_ep_set_halt(ep->ep);
+ if (!ret)
+ ret = -EBADMSG;
} else if (unlikely(data_len == -EINVAL)) {
/*
* Sanity Check: even though data_len can't be used
diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index 5eea44823ca0..d8e359ef6eb1 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -44,6 +44,7 @@ struct f_hidg {
/* configuration */
unsigned char bInterfaceSubClass;
unsigned char bInterfaceProtocol;
+ unsigned char protocol;
unsigned short report_desc_length;
char *report_desc;
unsigned short report_length;
@@ -527,7 +528,9 @@ static int hidg_setup(struct usb_function *f,
case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
| HID_REQ_GET_PROTOCOL):
VDBG(cdev, "get_protocol\n");
- goto stall;
+ length = min_t(unsigned int, length, 1);
+ ((u8 *) req->buf)[0] = hidg->protocol;
+ goto respond;
break;
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
@@ -539,6 +542,17 @@ static int hidg_setup(struct usb_function *f,
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8
| HID_REQ_SET_PROTOCOL):
VDBG(cdev, "set_protocol\n");
+ if (value > HID_REPORT_PROTOCOL)
+ goto stall;
+ length = 0;
+ /*
+ * We assume that programs implementing the Boot protocol
+ * are also compatible with the Report Protocol
+ */
+ if (hidg->bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
+ hidg->protocol = value;
+ goto respond;
+ }
goto stall;
break;
@@ -768,6 +782,7 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f)
/* set descriptor dynamic values */
hidg_interface_desc.bInterfaceSubClass = hidg->bInterfaceSubClass;
hidg_interface_desc.bInterfaceProtocol = hidg->bInterfaceProtocol;
+ hidg->protocol = HID_REPORT_PROTOCOL;
hidg_ss_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length);
hidg_ss_in_comp_desc.wBytesPerInterval =
cpu_to_le16(hidg->report_length);
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index a5719f271bf0..5d3d7941d2c2 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -98,6 +98,7 @@ struct f_midi {
DECLARE_KFIFO_PTR(in_req_fifo, struct usb_request *);
spinlock_t transmit_lock;
unsigned int in_last_port;
+ unsigned char free_ref;
struct gmidi_in_port in_ports_array[/* in_ports */];
};
@@ -108,6 +109,7 @@ static inline struct f_midi *func_to_midi(struct usb_function *f)
}
static void f_midi_transmit(struct f_midi *midi);
+static void f_midi_rmidi_free(struct snd_rawmidi *rmidi);
DECLARE_UAC_AC_HEADER_DESCRIPTOR(1);
DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1);
@@ -163,6 +165,13 @@ static struct usb_endpoint_descriptor bulk_out_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
+static struct usb_ss_ep_comp_descriptor bulk_out_ss_comp_desc = {
+ .bLength = sizeof(bulk_out_ss_comp_desc),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ /* .bMaxBurst = 0, */
+ /* .bmAttributes = 0, */
+};
+
/* B.5.2 Class-specific MS Bulk OUT Endpoint Descriptor */
static struct usb_ms_endpoint_descriptor_16 ms_out_desc = {
/* .bLength = DYNAMIC */
@@ -180,6 +189,13 @@ static struct usb_endpoint_descriptor bulk_in_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
+static struct usb_ss_ep_comp_descriptor bulk_in_ss_comp_desc = {
+ .bLength = sizeof(bulk_in_ss_comp_desc),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ /* .bMaxBurst = 0, */
+ /* .bmAttributes = 0, */
+};
+
/* B.6.2 Class-specific MS Bulk IN Endpoint Descriptor */
static struct usb_ms_endpoint_descriptor_16 ms_in_desc = {
/* .bLength = DYNAMIC */
@@ -755,13 +771,13 @@ static void f_midi_out_trigger(struct snd_rawmidi_substream *substream, int up)
clear_bit(substream->number, &midi->out_triggered);
}
-static struct snd_rawmidi_ops gmidi_in_ops = {
+static const struct snd_rawmidi_ops gmidi_in_ops = {
.open = f_midi_in_open,
.close = f_midi_in_close,
.trigger = f_midi_in_trigger,
};
-static struct snd_rawmidi_ops gmidi_out_ops = {
+static const struct snd_rawmidi_ops gmidi_out_ops = {
.open = f_midi_out_open,
.close = f_midi_out_close,
.trigger = f_midi_out_trigger
@@ -818,6 +834,8 @@ static int f_midi_register_card(struct f_midi *midi)
SNDRV_RAWMIDI_INFO_INPUT |
SNDRV_RAWMIDI_INFO_DUPLEX;
rmidi->private_data = midi;
+ rmidi->private_free = f_midi_rmidi_free;
+ midi->free_ref++;
/*
* Yes, rawmidi OUTPUT = USB IN, and rawmidi INPUT = USB OUT.
@@ -853,7 +871,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
struct usb_composite_dev *cdev = c->cdev;
struct f_midi *midi = func_to_midi(f);
struct usb_string *us;
- int status, n, jack = 1, i = 0;
+ int status, n, jack = 1, i = 0, endpoint_descriptor_index = 0;
midi->gadget = cdev->gadget;
tasklet_init(&midi->tasklet, f_midi_in_tasklet, (unsigned long) midi);
@@ -895,7 +913,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
goto fail;
/* allocate temporary function list */
- midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(*midi_function),
+ midi_function = kcalloc((MAX_PORTS * 4) + 11, sizeof(*midi_function),
GFP_KERNEL);
if (!midi_function) {
status = -ENOMEM;
@@ -985,6 +1003,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
ms_in_desc.bNumEmbMIDIJack = midi->out_ports;
/* ... and add them to the list */
+ endpoint_descriptor_index = i;
midi_function[i++] = (struct usb_descriptor_header *) &bulk_out_desc;
midi_function[i++] = (struct usb_descriptor_header *) &ms_out_desc;
midi_function[i++] = (struct usb_descriptor_header *) &bulk_in_desc;
@@ -1009,13 +1028,34 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
goto fail_f_midi;
}
+ if (gadget_is_superspeed(c->cdev->gadget)) {
+ bulk_in_desc.wMaxPacketSize = cpu_to_le16(1024);
+ bulk_out_desc.wMaxPacketSize = cpu_to_le16(1024);
+ i = endpoint_descriptor_index;
+ midi_function[i++] = (struct usb_descriptor_header *)
+ &bulk_out_desc;
+ midi_function[i++] = (struct usb_descriptor_header *)
+ &bulk_out_ss_comp_desc;
+ midi_function[i++] = (struct usb_descriptor_header *)
+ &ms_out_desc;
+ midi_function[i++] = (struct usb_descriptor_header *)
+ &bulk_in_desc;
+ midi_function[i++] = (struct usb_descriptor_header *)
+ &bulk_in_ss_comp_desc;
+ midi_function[i++] = (struct usb_descriptor_header *)
+ &ms_in_desc;
+ f->ss_descriptors = usb_copy_descriptors(midi_function);
+ if (!f->ss_descriptors)
+ goto fail_f_midi;
+ }
+
kfree(midi_function);
return 0;
fail_f_midi:
kfree(midi_function);
- usb_free_descriptors(f->hs_descriptors);
+ usb_free_all_descriptors(f);
fail:
f_midi_unregister_card(midi);
fail_register:
@@ -1197,14 +1237,21 @@ static void f_midi_free(struct usb_function *f)
midi = func_to_midi(f);
opts = container_of(f->fi, struct f_midi_opts, func_inst);
- kfree(midi->id);
mutex_lock(&opts->lock);
- kfifo_free(&midi->in_req_fifo);
- kfree(midi);
- --opts->refcnt;
+ if (!--midi->free_ref) {
+ kfree(midi->id);
+ kfifo_free(&midi->in_req_fifo);
+ kfree(midi);
+ --opts->refcnt;
+ }
mutex_unlock(&opts->lock);
}
+static void f_midi_rmidi_free(struct snd_rawmidi *rmidi)
+{
+ f_midi_free(rmidi->private_data);
+}
+
static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
{
struct usb_composite_dev *cdev = f->config->cdev;
@@ -1219,7 +1266,7 @@ static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
card = midi->card;
midi->card = NULL;
if (card)
- snd_card_free(card);
+ snd_card_free_when_closed(card);
usb_free_all_descriptors(f);
}
@@ -1263,6 +1310,7 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi)
midi->buflen = opts->buflen;
midi->qlen = opts->qlen;
midi->in_last_port = 0;
+ midi->free_ref = 1;
status = kfifo_alloc(&midi->in_req_fifo, midi->qlen, GFP_KERNEL);
if (status)
diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c
index 24e34cfcb4bd..45b334ceaf2e 100644
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@@ -925,8 +925,6 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
*/
ncm->port.is_zlp_ok =
gadget_is_zlp_supported(cdev->gadget);
- ncm->port.no_skb_reserve =
- gadget_avoids_skb_reserve(cdev->gadget);
ncm->port.cdc_filter = DEFAULT_FILTER;
DBG(cdev, "activate ncm\n");
net = gether_connect(&ncm->port);
diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c
index 16562e461121..e1d5853ef1e4 100644
--- a/drivers/usb/gadget/function/f_rndis.c
+++ b/drivers/usb/gadget/function/f_rndis.c
@@ -691,6 +691,10 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f)
f->os_desc_table[0].os_desc = &rndis_opts->rndis_os_desc;
}
+ rndis_iad_descriptor.bFunctionClass = rndis_opts->class;
+ rndis_iad_descriptor.bFunctionSubClass = rndis_opts->subclass;
+ rndis_iad_descriptor.bFunctionProtocol = rndis_opts->protocol;
+
/*
* in drivers/usb/gadget/configfs.c:configfs_composite_bind()
* configurations are bound in sequence with list_for_each_entry,
@@ -866,11 +870,23 @@ USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(rndis);
/* f_rndis_opts_ifname */
USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(rndis);
+/* f_rndis_opts_class */
+USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(rndis, class);
+
+/* f_rndis_opts_subclass */
+USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(rndis, subclass);
+
+/* f_rndis_opts_protocol */
+USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(rndis, protocol);
+
static struct configfs_attribute *rndis_attrs[] = {
&rndis_opts_attr_dev_addr,
&rndis_opts_attr_host_addr,
&rndis_opts_attr_qmult,
&rndis_opts_attr_ifname,
+ &rndis_opts_attr_class,
+ &rndis_opts_attr_subclass,
+ &rndis_opts_attr_protocol,
NULL,
};
@@ -916,6 +932,10 @@ static struct usb_function_instance *rndis_alloc_inst(void)
}
INIT_LIST_HEAD(&opts->rndis_os_desc.ext_prop);
+ opts->class = rndis_iad_descriptor.bFunctionClass;
+ opts->subclass = rndis_iad_descriptor.bFunctionSubClass;
+ opts->protocol = rndis_iad_descriptor.bFunctionProtocol;
+
descs[0] = &opts->rndis_os_desc;
names[0] = "rndis";
config_group_init_type_name(&opts->func_inst.group, "",
diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c
index 5dd73b9e5172..3971bbab88bd 100644
--- a/drivers/usb/gadget/function/u_audio.c
+++ b/drivers/usb/gadget/function/u_audio.c
@@ -79,7 +79,7 @@ struct snd_uac_chip {
unsigned int p_framesize;
};
-static struct snd_pcm_hardware uac_pcm_hardware = {
+static const struct snd_pcm_hardware uac_pcm_hardware = {
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER
| SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID
| SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME,
@@ -354,7 +354,7 @@ static int uac_pcm_null(struct snd_pcm_substream *substream)
return 0;
}
-static struct snd_pcm_ops uac_pcm_ops = {
+static const struct snd_pcm_ops uac_pcm_ops = {
.open = uac_pcm_open,
.close = uac_pcm_null,
.ioctl = snd_pcm_lib_ioctl,
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index a8b40d07e927..bdbc3fdc7c4f 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -1073,7 +1073,7 @@ struct net_device *gether_connect(struct gether *link)
if (result == 0) {
dev->zlp = link->is_zlp_ok;
- dev->no_skb_reserve = link->no_skb_reserve;
+ dev->no_skb_reserve = gadget_avoids_skb_reserve(dev->gadget);
DBG(dev, "qlen %d\n", qlen(dev->gadget, dev->qmult));
dev->header_len = link->header_len;
diff --git a/drivers/usb/gadget/function/u_ether.h b/drivers/usb/gadget/function/u_ether.h
index 81d94a7ae4b4..c77145bd6b5b 100644
--- a/drivers/usb/gadget/function/u_ether.h
+++ b/drivers/usb/gadget/function/u_ether.h
@@ -64,7 +64,6 @@ struct gether {
struct usb_ep *out_ep;
bool is_zlp_ok;
- bool no_skb_reserve;
u16 cdc_filter;
diff --git a/drivers/usb/gadget/function/u_ether_configfs.h b/drivers/usb/gadget/function/u_ether_configfs.h
index c71133de17e7..e4c3f84af4c3 100644
--- a/drivers/usb/gadget/function/u_ether_configfs.h
+++ b/drivers/usb/gadget/function/u_ether_configfs.h
@@ -153,4 +153,39 @@ out: \
\
CONFIGFS_ATTR_RO(_f_##_opts_, ifname)
+#define USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(_f_, _n_) \
+ static ssize_t _f_##_opts_##_n_##_show(struct config_item *item,\
+ char *page) \
+ { \
+ struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item); \
+ int ret; \
+ \
+ mutex_lock(&opts->lock); \
+ ret = sprintf(page, "%02x\n", opts->_n_); \
+ mutex_unlock(&opts->lock); \
+ \
+ return ret; \
+ } \
+ \
+ static ssize_t _f_##_opts_##_n_##_store(struct config_item *item,\
+ const char *page, \
+ size_t len) \
+ { \
+ struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item); \
+ int ret; \
+ u8 val; \
+ \
+ mutex_lock(&opts->lock); \
+ ret = sscanf(page, "%02hhx", &val); \
+ if (ret > 0) { \
+ opts->_n_ = val; \
+ ret = len; \
+ } \
+ mutex_unlock(&opts->lock); \
+ \
+ return ret; \
+ } \
+ \
+ CONFIGFS_ATTR(_f_##_opts_, _n_)
+
#endif /* __U_ETHER_CONFIGFS_H */
diff --git a/drivers/usb/gadget/function/u_rndis.h b/drivers/usb/gadget/function/u_rndis.h
index 4eafd5050545..a35ee3c2545d 100644
--- a/drivers/usb/gadget/function/u_rndis.h
+++ b/drivers/usb/gadget/function/u_rndis.h
@@ -29,6 +29,10 @@ struct f_rndis_opts {
struct usb_os_desc rndis_os_desc;
char rndis_ext_compat_id[16];
+ u8 class;
+ u8 subclass;
+ u8 protocol;
+
/*
* Read/write access to configfs attributes is handled by configfs.
*
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index 9b0805f55ad7..4176216d54be 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -537,7 +537,7 @@ static void gs_rx_push(unsigned long _port)
}
/* push data to (open) tty */
- if (req->actual) {
+ if (req->actual && tty) {
char *packet = req->buf;
unsigned size = req->actual;
unsigned n;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.