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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/usb/gadget/configfs.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/usb/gadget/configfs.c')
-rw-r--r--drivers/usb/gadget/configfs.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 163d305e1..590c44989 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -56,7 +56,6 @@ struct gadget_info {
struct list_head string_list;
struct list_head available_func;
- const char *udc_name;
struct usb_composite_driver composite;
struct usb_composite_dev cdev;
bool use_os_desc;
@@ -233,21 +232,23 @@ static ssize_t gadget_dev_desc_bcdUSB_store(struct config_item *item,
static ssize_t gadget_dev_desc_UDC_show(struct config_item *item, char *page)
{
- return sprintf(page, "%s\n", to_gadget_info(item)->udc_name ?: "");
+ char *udc_name = to_gadget_info(item)->composite.gadget_driver.udc_name;
+
+ return sprintf(page, "%s\n", udc_name ?: "");
}
static int unregister_gadget(struct gadget_info *gi)
{
int ret;
- if (!gi->udc_name)
+ if (!gi->composite.gadget_driver.udc_name)
return -ENODEV;
ret = usb_gadget_unregister_driver(&gi->composite.gadget_driver);
if (ret)
return ret;
- kfree(gi->udc_name);
- gi->udc_name = NULL;
+ kfree(gi->composite.gadget_driver.udc_name);
+ gi->composite.gadget_driver.udc_name = NULL;
return 0;
}
@@ -271,14 +272,16 @@ static ssize_t gadget_dev_desc_UDC_store(struct config_item *item,
if (ret)
goto err;
} else {
- if (gi->udc_name) {
+ if (gi->composite.gadget_driver.udc_name) {
ret = -EBUSY;
goto err;
}
- ret = usb_udc_attach_driver(name, &gi->composite.gadget_driver);
- if (ret)
+ gi->composite.gadget_driver.udc_name = name;
+ ret = usb_gadget_probe_driver(&gi->composite.gadget_driver);
+ if (ret) {
+ gi->composite.gadget_driver.udc_name = NULL;
goto err;
- gi->udc_name = name;
+ }
}
mutex_unlock(&gi->lock);
return len;
@@ -427,9 +430,9 @@ static int config_usb_cfg_unlink(
* remove the function.
*/
mutex_lock(&gi->lock);
- if (gi->udc_name)
+ if (gi->composite.gadget_driver.udc_name)
unregister_gadget(gi);
- WARN_ON(gi->udc_name);
+ WARN_ON(gi->composite.gadget_driver.udc_name);
list_for_each_entry(f, &cfg->func_list, list) {
if (f->fi == fi) {
@@ -873,10 +876,10 @@ static int os_desc_unlink(struct config_item *os_desc_ci,
struct usb_composite_dev *cdev = &gi->cdev;
mutex_lock(&gi->lock);
- if (gi->udc_name)
+ if (gi->composite.gadget_driver.udc_name)
unregister_gadget(gi);
cdev->os_desc_config = NULL;
- WARN_ON(gi->udc_name);
+ WARN_ON(gi->composite.gadget_driver.udc_name);
mutex_unlock(&gi->lock);
return 0;
}