V4L/DVB (8208): uvcvideo: Use GFP_NOIO when allocating memory during resume
The swap device might still be asleep, so memory allocated in the resume
handler must use GFP_NOIO. Thanks to Oliver Neukum for catching and reporting
this bug.
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c
index 6faf1fb..8eb5748 100644
--- a/drivers/media/video/uvc/uvc_video.c
+++ b/drivers/media/video/uvc/uvc_video.c
@@ -586,7 +586,7 @@
* is given by the endpoint.
*/
static int uvc_init_video_isoc(struct uvc_video_device *video,
- struct usb_host_endpoint *ep)
+ struct usb_host_endpoint *ep, gfp_t gfp_flags)
{
struct urb *urb;
unsigned int npackets, i, j;
@@ -611,14 +611,14 @@
size = npackets * psize;
for (i = 0; i < UVC_URBS; ++i) {
- urb = usb_alloc_urb(npackets, GFP_KERNEL);
+ urb = usb_alloc_urb(npackets, gfp_flags);
if (urb == NULL) {
uvc_uninit_video(video);
return -ENOMEM;
}
video->urb_buffer[i] = usb_buffer_alloc(video->dev->udev,
- size, GFP_KERNEL, &urb->transfer_dma);
+ size, gfp_flags, &urb->transfer_dma);
if (video->urb_buffer[i] == NULL) {
usb_free_urb(urb);
uvc_uninit_video(video);
@@ -652,7 +652,7 @@
* given by the endpoint.
*/
static int uvc_init_video_bulk(struct uvc_video_device *video,
- struct usb_host_endpoint *ep)
+ struct usb_host_endpoint *ep, gfp_t gfp_flags)
{
struct urb *urb;
unsigned int pipe, i;
@@ -674,14 +674,14 @@
pipe = usb_rcvbulkpipe(video->dev->udev, ep->desc.bEndpointAddress);
for (i = 0; i < UVC_URBS; ++i) {
- urb = usb_alloc_urb(0, GFP_KERNEL);
+ urb = usb_alloc_urb(0, gfp_flags);
if (urb == NULL) {
uvc_uninit_video(video);
return -ENOMEM;
}
video->urb_buffer[i] = usb_buffer_alloc(video->dev->udev,
- size, GFP_KERNEL, &urb->transfer_dma);
+ size, gfp_flags, &urb->transfer_dma);
if (video->urb_buffer[i] == NULL) {
usb_free_urb(urb);
uvc_uninit_video(video);
@@ -702,7 +702,7 @@
/*
* Initialize isochronous/bulk URBs and allocate transfer buffers.
*/
-static int uvc_init_video(struct uvc_video_device *video)
+static int uvc_init_video(struct uvc_video_device *video, gfp_t gfp_flags)
{
struct usb_interface *intf = video->streaming->intf;
struct usb_host_interface *alts;
@@ -747,7 +747,7 @@
if ((ret = usb_set_interface(video->dev->udev, intfnum, i)) < 0)
return ret;
- ret = uvc_init_video_isoc(video, ep);
+ ret = uvc_init_video_isoc(video, ep, gfp_flags);
} else {
/* Bulk endpoint, proceed to URB initialization. */
ep = uvc_find_endpoint(&intf->altsetting[0],
@@ -755,7 +755,7 @@
if (ep == NULL)
return -EIO;
- ret = uvc_init_video_bulk(video, ep);
+ ret = uvc_init_video_bulk(video, ep, gfp_flags);
}
if (ret < 0)
@@ -763,7 +763,7 @@
/* Submit the URBs. */
for (i = 0; i < UVC_URBS; ++i) {
- if ((ret = usb_submit_urb(video->urb[i], GFP_KERNEL)) < 0) {
+ if ((ret = usb_submit_urb(video->urb[i], gfp_flags)) < 0) {
uvc_printk(KERN_ERR, "Failed to submit URB %u "
"(%d).\n", i, ret);
uvc_uninit_video(video);
@@ -818,7 +818,7 @@
if (!uvc_queue_streaming(&video->queue))
return 0;
- if ((ret = uvc_init_video(video)) < 0)
+ if ((ret = uvc_init_video(video, GFP_NOIO)) < 0)
uvc_queue_enable(&video->queue, 0);
return ret;
@@ -930,5 +930,5 @@
if ((ret = uvc_queue_enable(&video->queue, 1)) < 0)
return ret;
- return uvc_init_video(video);
+ return uvc_init_video(video, GFP_KERNEL);
}