diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/core/driver.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 112a7ae5095c..69919b257775 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -79,6 +79,23 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids, } EXPORT_SYMBOL_GPL(usb_store_new_id); +static ssize_t show_dynids(struct device_driver *driver, char *buf) +{ + struct usb_dynid *dynid; + struct usb_driver *usb_drv = to_usb_driver(driver); + size_t count = 0; + + list_for_each_entry(dynid, &usb_drv->dynids.list, node) + if (dynid->id.bInterfaceClass != 0) + count += scnprintf(&buf[count], PAGE_SIZE - count, "%04x %04x %02x\n", + dynid->id.idVendor, dynid->id.idProduct, + dynid->id.bInterfaceClass); + else + count += scnprintf(&buf[count], PAGE_SIZE - count, "%04x %04x\n", + dynid->id.idVendor, dynid->id.idProduct); + return count; +} + static ssize_t store_new_id(struct device_driver *driver, const char *buf, size_t count) { @@ -86,7 +103,7 @@ static ssize_t store_new_id(struct device_driver *driver, return usb_store_new_id(&usb_drv->dynids, driver, buf, count); } -static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); +static DRIVER_ATTR(new_id, S_IRUGO | S_IWUSR, show_dynids, store_new_id); /** * store_remove_id - remove a USB device ID from this driver @@ -127,7 +144,7 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count) return retval; return count; } -static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id); +static DRIVER_ATTR(remove_id, S_IRUGO | S_IWUSR, show_dynids, store_remove_id); static int usb_create_newid_files(struct usb_driver *usb_drv) { |