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path: root/drivers/usb/gadget/function/uvc_configfs.c
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Diffstat (limited to 'drivers/usb/gadget/function/uvc_configfs.c')
-rw-r--r--drivers/usb/gadget/function/uvc_configfs.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index 31125a4a2658..4e037d2a7a60 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -547,7 +547,7 @@ out:
return ret;
}
-static int uvcg_control_class_drop_link(struct config_item *src,
+static void uvcg_control_class_drop_link(struct config_item *src,
struct config_item *target)
{
struct config_item *control, *header;
@@ -555,7 +555,6 @@ static int uvcg_control_class_drop_link(struct config_item *src,
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
struct uvc_descriptor_header **class_array;
struct uvcg_control_header *target_hdr;
- int ret = -EINVAL;
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
@@ -569,23 +568,17 @@ static int uvcg_control_class_drop_link(struct config_item *src,
mutex_lock(&opts->lock);
class_array = uvcg_get_ctl_class_arr(src, opts);
- if (!class_array)
- goto unlock;
- if (opts->refcnt) {
- ret = -EBUSY;
+ if (!class_array || opts->refcnt)
goto unlock;
- }
target_hdr = to_uvcg_control_header(target);
--target_hdr->linked;
class_array[0] = NULL;
- ret = 0;
unlock:
mutex_unlock(&opts->lock);
out:
mutex_unlock(su_mutex);
- return ret;
}
static struct configfs_item_operations uvcg_control_class_item_ops = {
@@ -777,7 +770,7 @@ out:
return ret;
}
-static int uvcg_streaming_header_drop_link(struct config_item *src,
+static void uvcg_streaming_header_drop_link(struct config_item *src,
struct config_item *target)
{
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
@@ -786,7 +779,6 @@ static int uvcg_streaming_header_drop_link(struct config_item *src,
struct uvcg_streaming_header *src_hdr;
struct uvcg_format *target_fmt = NULL;
struct uvcg_format_ptr *format_ptr, *tmp;
- int ret = -EINVAL;
src_hdr = to_uvcg_streaming_header(src);
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
@@ -811,8 +803,6 @@ static int uvcg_streaming_header_drop_link(struct config_item *src,
out:
mutex_unlock(&opts->lock);
mutex_unlock(su_mutex);
- return ret;
-
}
static struct configfs_item_operations uvcg_streaming_header_item_ops = {
@@ -2051,7 +2041,7 @@ out:
return ret;
}
-static int uvcg_streaming_class_drop_link(struct config_item *src,
+static void uvcg_streaming_class_drop_link(struct config_item *src,
struct config_item *target)
{
struct config_item *streaming, *header;
@@ -2059,7 +2049,6 @@ static int uvcg_streaming_class_drop_link(struct config_item *src,
struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex;
struct uvc_descriptor_header ***class_array;
struct uvcg_streaming_header *target_hdr;
- int ret = -EINVAL;
mutex_lock(su_mutex); /* for navigating configfs hierarchy */
@@ -2076,23 +2065,19 @@ static int uvcg_streaming_class_drop_link(struct config_item *src,
if (!class_array || !*class_array)
goto unlock;
- if (opts->refcnt) {
- ret = -EBUSY;
+ if (opts->refcnt)
goto unlock;
- }
target_hdr = to_uvcg_streaming_header(target);
--target_hdr->linked;
kfree(**class_array);
kfree(*class_array);
*class_array = NULL;
- ret = 0;
unlock:
mutex_unlock(&opts->lock);
out:
mutex_unlock(su_mutex);
- return ret;
}
static struct configfs_item_operations uvcg_streaming_class_item_ops = {