dumalogiya
/
openwrt
2
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

generic: add usb_find_device_by_name helper

Browse Source 
SVN-Revision: 24645
v19.07.3_mercusys_ac12_duma
Gabor Juhos 14 years ago
parent 0d01356fc6
commit 3b8a79395a
5 changed files with 420 additions and 0 deletions
Show Stats Download Patch File Download Diff File

84
target/linux/generic/patches-2.6.32/310-usb-add-usb_find_device_by_name.patch
Unescape Escape View File

@ -0,0 +1,84 @@
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -651,6 +651,71 @@ exit:
return dev;
}
+static struct usb_device *match_device_name(struct usb_device *dev,
+ const char *name)
+{
+ struct usb_device *ret_dev = NULL;
+ int child;
+
+ dev_dbg(&dev->dev, "check for name %s ...\n", name);
+
+ /* see if this device matches */
+ if (strcmp(dev_name(&dev->dev), name) == 0 ) {
+ dev_dbg(&dev->dev, "matched this device!\n");
+ ret_dev = usb_get_dev(dev);
+ goto exit;
+ }
+
+ /* look through all of the children of this device */
+ for (child = 0; child < dev->maxchild; ++child) {
+ if (dev->children[child]) {
+ usb_lock_device(dev->children[child]);
+ ret_dev = match_device_name(dev->children[child], name);
+ usb_unlock_device(dev->children[child]);
+ if (ret_dev)
+ goto exit;
+ }
+ }
+exit:
+ return ret_dev;
+}
+
+/**
+ * usb_find_device_by_name - find a specific usb device in the system
+ * @name: the name of the device to find
+ *
+ * Returns a pointer to a struct usb_device if such a specified usb
+ * device is present in the system currently. The usage count of the
+ * device will be incremented if a device is found. Make sure to call
+ * usb_put_dev() when the caller is finished with the device.
+ *
+ * If a device with the specified bus id is not found, NULL is returned.
+ */
+struct usb_device *usb_find_device_by_name(const char *name)
+{
+ struct list_head *buslist;
+ struct usb_bus *bus;
+ struct usb_device *dev = NULL;
+
+ mutex_lock(&usb_bus_list_lock);
+ for (buslist = usb_bus_list.next;
+ buslist != &usb_bus_list;
+ buslist = buslist->next) {
+ bus = container_of(buslist, struct usb_bus, bus_list);
+ if (!bus->root_hub)
+ continue;
+ usb_lock_device(bus->root_hub);
+ dev = match_device_name(bus->root_hub, name);
+ usb_unlock_device(bus->root_hub);
+ if (dev)
+ goto exit;
+ }
+exit:
+ mutex_unlock(&usb_bus_list_lock);
+ return dev;
+}
+EXPORT_SYMBOL_GPL(usb_find_device_by_name);
+
/**
* usb_get_current_frame_number - return current bus frame number
* @dev: the device whose bus is being queried
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -540,6 +540,7 @@ extern int usb_reset_device(struct usb_d
extern void usb_queue_reset_device(struct usb_interface *dev);
extern struct usb_device *usb_find_device(u16 vendor_id, u16 product_id);
+extern struct usb_device *usb_find_device_by_name(const char *name);
/* USB autosuspend and autoresume */
#ifdef CONFIG_USB_SUSPEND

84
target/linux/generic/patches-2.6.34/310-usb-add-usb_find_device_by_name.patch
Unescape Escape View File

@ -0,0 +1,84 @@
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -717,6 +717,71 @@ int __usb_get_extra_descriptor(char *buf
}
EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor);
+static struct usb_device *match_device_name(struct usb_device *dev,
+ const char *name)
+{
+ struct usb_device *ret_dev = NULL;
+ int child;
+
+ dev_dbg(&dev->dev, "check for name %s ...\n", name);
+
+ /* see if this device matches */
+ if (strcmp(dev_name(&dev->dev), name) == 0 ) {
+ dev_dbg(&dev->dev, "matched this device!\n");
+ ret_dev = usb_get_dev(dev);
+ goto exit;
+ }
+
+ /* look through all of the children of this device */
+ for (child = 0; child < dev->maxchild; ++child) {
+ if (dev->children[child]) {
+ usb_lock_device(dev->children[child]);
+ ret_dev = match_device_name(dev->children[child], name);
+ usb_unlock_device(dev->children[child]);
+ if (ret_dev)
+ goto exit;
+ }
+ }
+exit:
+ return ret_dev;
+}
+
+/**
+ * usb_find_device_by_name - find a specific usb device in the system
+ * @name: the name of the device to find
+ *
+ * Returns a pointer to a struct usb_device if such a specified usb
+ * device is present in the system currently. The usage count of the
+ * device will be incremented if a device is found. Make sure to call
+ * usb_put_dev() when the caller is finished with the device.
+ *
+ * If a device with the specified bus id is not found, NULL is returned.
+ */
+struct usb_device *usb_find_device_by_name(const char *name)
+{
+ struct list_head *buslist;
+ struct usb_bus *bus;
+ struct usb_device *dev = NULL;
+
+ mutex_lock(&usb_bus_list_lock);
+ for (buslist = usb_bus_list.next;
+ buslist != &usb_bus_list;
+ buslist = buslist->next) {
+ bus = container_of(buslist, struct usb_bus, bus_list);
+ if (!bus->root_hub)
+ continue;
+ usb_lock_device(bus->root_hub);
+ dev = match_device_name(bus->root_hub, name);
+ usb_unlock_device(bus->root_hub);
+ if (dev)
+ goto exit;
+ }
+exit:
+ mutex_unlock(&usb_bus_list_lock);
+ return dev;
+}
+EXPORT_SYMBOL_GPL(usb_find_device_by_name);
+
/**
* usb_alloc_coherent - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
* @dev: device the buffer will be used with
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -609,6 +609,7 @@ extern struct usb_host_interface *usb_fi
unsigned int iface_num,
unsigned int alt_num);
+extern struct usb_device *usb_find_device_by_name(const char *name);
/**
* usb_make_path - returns stable device path in the usb tree

84
target/linux/generic/patches-2.6.35/310-usb-add-usb_find_device_by_name.patch
Unescape Escape View File

@ -0,0 +1,84 @@
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -647,6 +647,71 @@ int __usb_get_extra_descriptor(char *buf
}
EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor);
+static struct usb_device *match_device_name(struct usb_device *dev,
+ const char *name)
+{
+ struct usb_device *ret_dev = NULL;
+ int child;
+
+ dev_dbg(&dev->dev, "check for name %s ...\n", name);
+
+ /* see if this device matches */
+ if (strcmp(dev_name(&dev->dev), name) == 0 ) {
+ dev_dbg(&dev->dev, "matched this device!\n");
+ ret_dev = usb_get_dev(dev);
+ goto exit;
+ }
+
+ /* look through all of the children of this device */
+ for (child = 0; child < dev->maxchild; ++child) {
+ if (dev->children[child]) {
+ usb_lock_device(dev->children[child]);
+ ret_dev = match_device_name(dev->children[child], name);
+ usb_unlock_device(dev->children[child]);
+ if (ret_dev)
+ goto exit;
+ }
+ }
+exit:
+ return ret_dev;
+}
+
+/**
+ * usb_find_device_by_name - find a specific usb device in the system
+ * @name: the name of the device to find
+ *
+ * Returns a pointer to a struct usb_device if such a specified usb
+ * device is present in the system currently. The usage count of the
+ * device will be incremented if a device is found. Make sure to call
+ * usb_put_dev() when the caller is finished with the device.
+ *
+ * If a device with the specified bus id is not found, NULL is returned.
+ */
+struct usb_device *usb_find_device_by_name(const char *name)
+{
+ struct list_head *buslist;
+ struct usb_bus *bus;
+ struct usb_device *dev = NULL;
+
+ mutex_lock(&usb_bus_list_lock);
+ for (buslist = usb_bus_list.next;
+ buslist != &usb_bus_list;
+ buslist = buslist->next) {
+ bus = container_of(buslist, struct usb_bus, bus_list);
+ if (!bus->root_hub)
+ continue;
+ usb_lock_device(bus->root_hub);
+ dev = match_device_name(bus->root_hub, name);
+ usb_unlock_device(bus->root_hub);
+ if (dev)
+ goto exit;
+ }
+exit:
+ mutex_unlock(&usb_bus_list_lock);
+ return dev;
+}
+EXPORT_SYMBOL_GPL(usb_find_device_by_name);
+
/**
* usb_alloc_coherent - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
* @dev: device the buffer will be used with
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -510,6 +510,7 @@ extern int usb_lock_device_for_reset(str
extern int usb_reset_device(struct usb_device *dev);
extern void usb_queue_reset_device(struct usb_interface *dev);
+extern struct usb_device *usb_find_device_by_name(const char *name);
/* USB autosuspend and autoresume */
#ifdef CONFIG_USB_SUSPEND

84
target/linux/generic/patches-2.6.36/310-usb-add-usb_find_device_by_name.patch
Unescape Escape View File

@ -0,0 +1,84 @@
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -645,6 +645,71 @@ int __usb_get_extra_descriptor(char *buf
}
EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor);
+static struct usb_device *match_device_name(struct usb_device *dev,
+ const char *name)
+{
+ struct usb_device *ret_dev = NULL;
+ int child;
+
+ dev_dbg(&dev->dev, "check for name %s ...\n", name);
+
+ /* see if this device matches */
+ if (strcmp(dev_name(&dev->dev), name) == 0 ) {
+ dev_dbg(&dev->dev, "matched this device!\n");
+ ret_dev = usb_get_dev(dev);
+ goto exit;
+ }
+
+ /* look through all of the children of this device */
+ for (child = 0; child < dev->maxchild; ++child) {
+ if (dev->children[child]) {
+ usb_lock_device(dev->children[child]);
+ ret_dev = match_device_name(dev->children[child], name);
+ usb_unlock_device(dev->children[child]);
+ if (ret_dev)
+ goto exit;
+ }
+ }
+exit:
+ return ret_dev;
+}
+
+/**
+ * usb_find_device_by_name - find a specific usb device in the system
+ * @name: the name of the device to find
+ *
+ * Returns a pointer to a struct usb_device if such a specified usb
+ * device is present in the system currently. The usage count of the
+ * device will be incremented if a device is found. Make sure to call
+ * usb_put_dev() when the caller is finished with the device.
+ *
+ * If a device with the specified bus id is not found, NULL is returned.
+ */
+struct usb_device *usb_find_device_by_name(const char *name)
+{
+ struct list_head *buslist;
+ struct usb_bus *bus;
+ struct usb_device *dev = NULL;
+
+ mutex_lock(&usb_bus_list_lock);
+ for (buslist = usb_bus_list.next;
+ buslist != &usb_bus_list;
+ buslist = buslist->next) {
+ bus = container_of(buslist, struct usb_bus, bus_list);
+ if (!bus->root_hub)
+ continue;
+ usb_lock_device(bus->root_hub);
+ dev = match_device_name(bus->root_hub, name);
+ usb_unlock_device(bus->root_hub);
+ if (dev)
+ goto exit;
+ }
+exit:
+ mutex_unlock(&usb_bus_list_lock);
+ return dev;
+}
+EXPORT_SYMBOL_GPL(usb_find_device_by_name);
+
/**
* usb_alloc_coherent - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
* @dev: device the buffer will be used with
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -512,6 +512,7 @@ extern int usb_lock_device_for_reset(str
extern int usb_reset_device(struct usb_device *dev);
extern void usb_queue_reset_device(struct usb_interface *dev);
+extern struct usb_device *usb_find_device_by_name(const char *name);
/* USB autosuspend and autoresume */
#ifdef CONFIG_USB_SUSPEND

84
target/linux/generic/patches-2.6.37/310-usb-add-usb_find_device_by_name.patch
Unescape Escape View File

@ -0,0 +1,84 @@
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -645,6 +645,71 @@ int __usb_get_extra_descriptor(char *buf
}
EXPORT_SYMBOL_GPL(__usb_get_extra_descriptor);
+static struct usb_device *match_device_name(struct usb_device *dev,
+ const char *name)
+{
+ struct usb_device *ret_dev = NULL;
+ int child;
+
+ dev_dbg(&dev->dev, "check for name %s ...\n", name);
+
+ /* see if this device matches */
+ if (strcmp(dev_name(&dev->dev), name) == 0 ) {
+ dev_dbg(&dev->dev, "matched this device!\n");
+ ret_dev = usb_get_dev(dev);
+ goto exit;
+ }
+
+ /* look through all of the children of this device */
+ for (child = 0; child < dev->maxchild; ++child) {
+ if (dev->children[child]) {
+ usb_lock_device(dev->children[child]);
+ ret_dev = match_device_name(dev->children[child], name);
+ usb_unlock_device(dev->children[child]);
+ if (ret_dev)
+ goto exit;
+ }
+ }
+exit:
+ return ret_dev;
+}
+
+/**
+ * usb_find_device_by_name - find a specific usb device in the system
+ * @name: the name of the device to find
+ *
+ * Returns a pointer to a struct usb_device if such a specified usb
+ * device is present in the system currently. The usage count of the
+ * device will be incremented if a device is found. Make sure to call
+ * usb_put_dev() when the caller is finished with the device.
+ *
+ * If a device with the specified bus id is not found, NULL is returned.
+ */
+struct usb_device *usb_find_device_by_name(const char *name)
+{
+ struct list_head *buslist;
+ struct usb_bus *bus;
+ struct usb_device *dev = NULL;
+
+ mutex_lock(&usb_bus_list_lock);
+ for (buslist = usb_bus_list.next;
+ buslist != &usb_bus_list;
+ buslist = buslist->next) {
+ bus = container_of(buslist, struct usb_bus, bus_list);
+ if (!bus->root_hub)
+ continue;
+ usb_lock_device(bus->root_hub);
+ dev = match_device_name(bus->root_hub, name);
+ usb_unlock_device(bus->root_hub);
+ if (dev)
+ goto exit;
+ }
+exit:
+ mutex_unlock(&usb_bus_list_lock);
+ return dev;
+}
+EXPORT_SYMBOL_GPL(usb_find_device_by_name);
+
/**
* usb_alloc_coherent - allocate dma-consistent buffer for URB_NO_xxx_DMA_MAP
* @dev: device the buffer will be used with
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -516,6 +516,7 @@ extern int usb_lock_device_for_reset(str
extern int usb_reset_device(struct usb_device *dev);
extern void usb_queue_reset_device(struct usb_interface *dev);
+extern struct usb_device *usb_find_device_by_name(const char *name);
/* USB autosuspend and autoresume */
#ifdef CONFIG_USB_SUSPEND
Write Preview
Loading…
Cancel
Save