From: Gabor Juhos Date: Fri, 17 Dec 2010 17:10:08 +0000 (+0000) Subject: generic: add usb_find_device_by_name helper X-Git-Tag: reboot~18048 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3b8a79395ae9042a0717ebbb05996c52d9f320f3;p=openwrt%2Fstaging%2Fxback.git generic: add usb_find_device_by_name helper SVN-Revision: 24645 --- diff --git a/target/linux/generic/patches-2.6.32/310-usb-add-usb_find_device_by_name.patch b/target/linux/generic/patches-2.6.32/310-usb-add-usb_find_device_by_name.patch new file mode 100644 index 0000000000..dd976d673e --- /dev/null +++ b/target/linux/generic/patches-2.6.32/310-usb-add-usb_find_device_by_name.patch @@ -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 diff --git a/target/linux/generic/patches-2.6.34/310-usb-add-usb_find_device_by_name.patch b/target/linux/generic/patches-2.6.34/310-usb-add-usb_find_device_by_name.patch new file mode 100644 index 0000000000..89c3389bbb --- /dev/null +++ b/target/linux/generic/patches-2.6.34/310-usb-add-usb_find_device_by_name.patch @@ -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 diff --git a/target/linux/generic/patches-2.6.35/310-usb-add-usb_find_device_by_name.patch b/target/linux/generic/patches-2.6.35/310-usb-add-usb_find_device_by_name.patch new file mode 100644 index 0000000000..9600529f3e --- /dev/null +++ b/target/linux/generic/patches-2.6.35/310-usb-add-usb_find_device_by_name.patch @@ -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 diff --git a/target/linux/generic/patches-2.6.36/310-usb-add-usb_find_device_by_name.patch b/target/linux/generic/patches-2.6.36/310-usb-add-usb_find_device_by_name.patch new file mode 100644 index 0000000000..50b3dca22d --- /dev/null +++ b/target/linux/generic/patches-2.6.36/310-usb-add-usb_find_device_by_name.patch @@ -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 diff --git a/target/linux/generic/patches-2.6.37/310-usb-add-usb_find_device_by_name.patch b/target/linux/generic/patches-2.6.37/310-usb-add-usb_find_device_by_name.patch new file mode 100644 index 0000000000..aa3becdf09 --- /dev/null +++ b/target/linux/generic/patches-2.6.37/310-usb-add-usb_find_device_by_name.patch @@ -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