probe->dwMaxPayloadTransferSize is a 32bit value, but bandwidth is 16bit. This
may lead to a bit overflow.
Fix this by using probe->dwMaxPayloadTransferSize directly.
Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx>
---
v2:
Use probe->dwMaxPayloadTransferSize directly instead of changing temporary
variable.
drivers/media/usb/uvc/uvc_video.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 1b4cc934109e..e016f88bdf96 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -383,7 +383,6 @@ int uvc_probe_video(struct uvc_streaming *stream,
struct uvc_streaming_control *probe)
{
struct uvc_streaming_control probe_min, probe_max;
- u16 bandwidth;
unsigned int i;
int ret;
@@ -421,8 +420,7 @@ int uvc_probe_video(struct uvc_streaming *stream,
if (stream->intf->num_altsetting == 1)
break;
- bandwidth = probe->dwMaxPayloadTransferSize;
- if (bandwidth <= stream->maxpsize)
+ if (probe->dwMaxPayloadTransferSize <= stream->maxpsize)
break;
if (stream->dev->quirks & UVC_QUIRK_PROBE_MINMAX) {
--
2.25.1
