W dniu 21.05.2014 14:26, Dan Carpenter pisze:
The error handling is confusing in this function, but if you look
closely it is returning success after the allocation fails. I have
changed it to return -ENOMEM and re-written it to be more clear.
Fixes: 37a3a533429e ('usb: gadget: OS Feature Descriptors support')
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 042c66b..8e70057 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1924,24 +1924,19 @@ fail:
int composite_os_desc_req_prepare(struct usb_composite_dev *cdev,
struct usb_ep *ep0)
{
- int ret = 0;
-
cdev->os_desc_req = usb_ep_alloc_request(ep0, GFP_KERNEL);
- if (!cdev->os_desc_req) {
- ret = PTR_ERR(cdev->os_desc_req);
- goto end;
- }
+ if (!cdev->os_desc_req)
+ return -ENOMEM;
/* OS feature descriptor length <= 4kB */
cdev->os_desc_req->buf = kmalloc(4096, GFP_KERNEL);
if (!cdev->os_desc_req->buf) {
- ret = PTR_ERR(cdev->os_desc_req->buf);
kfree(cdev->os_desc_req);
- goto end;
+ return -ENOMEM;
}
cdev->os_desc_req->complete = composite_setup_complete;
-end:
- return ret;
+
+ return 0;
}
void composite_dev_cleanup(struct usb_composite_dev *cdev)
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