linux-kernel - [PATCH v2] media: uvcvideo: Fix InterfaceProtocol for Quanta camera

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Message-Id: <20220822131754.102393-1-ribalda@chromium.org>
Date:   Mon, 22 Aug 2022 15:17:54 +0200
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v2] media: uvcvideo: Fix InterfaceProtocol for Quanta camera

The Quanta 0408:4034 camera implements UVC 1.5, and thus sets
bInterfaceProtocol to UVC_PC_PROTOCOL_15. Commit 95f03d973478 ("media:
uvcvideo: Limit power line control for Quanta cameras") added a quirk
for the device that incorrectly specified the UVC 1.0 protocol,
rendering the quirk inoperative. Fix it.

Fixes: 95f03d973478 ("media: uvcvideo: Limit power line control for Quanta cameras")
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---

Mauro, could you queue this patch for v6.0?

Thanks!

 drivers/media/usb/uvc/uvc_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 9c05776f11d1..d509a4a2f08e 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -2740,7 +2740,7 @@ static const struct usb_device_id uvc_ids[] = {
 	  .idProduct		= 0x4034,
 	  .bInterfaceClass	= USB_CLASS_VIDEO,
 	  .bInterfaceSubClass	= 1,
-	  .bInterfaceProtocol	= 0,
+	  .bInterfaceProtocol	= UVC_PC_PROTOCOL_15,
 	  .driver_info		= (kernel_ulong_t)&uvc_ctrl_power_line_limited },
 	/* LogiLink Wireless Webcam */
 	{ .match_flags		= USB_DEVICE_ID_MATCH_DEVICE
-- 
2.37.1.595.g718a3a8f04-goog