[PATCH 1/1] media: uvcvideo: Increase UVC_CTRL_CONTROL_TIMEOUT to 5 seconds.

From: James Hilliard
Date: Sun Nov 14 2021 - 03:54:10 EST


Some uvc devices appear to require the maximum allowed USB timeout
for GET_CUR/SET_CUR requests.

So lets just bump the UVC control timeout to 5 seconds which is the
same as the usb ctrl get/set defaults:
USB_CTRL_GET_TIMEOUT 5000
USB_CTRL_SET_TIMEOUT 5000

Fixes:
Failed to query (GET_CUR) UVC control 11 on unit 2: -110 (exp. 1).
Failed to query (SET_CUR) UVC control 3 on unit 2: -110 (exp. 2).

Signed-off-by: James Hilliard <james.hilliard1@xxxxxxxxx>
---
drivers/media/usb/uvc/uvcvideo.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index fd4f5ef47dfb..583c51ac3eec 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -189,7 +189,7 @@
/* Maximum status buffer size in bytes of interrupt URB. */
#define UVC_MAX_STATUS_SIZE 16

-#define UVC_CTRL_CONTROL_TIMEOUT 500
+#define UVC_CTRL_CONTROL_TIMEOUT 5000
#define UVC_CTRL_STREAMING_TIMEOUT 5000

/* Maximum allowed number of control mappings per device */
--
2.25.1