linux-kernel - [PATCH RESEND v2 3/7] media: uvcvideo: Return -EACCES for Wrong state error

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Message-Id: <20220920-resend-v4l2-compliance-v2-3-b0ceb15353ac@chromium.org>
Date:   Fri, 02 Dec 2022 18:21:37 +0100
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Hans Verkuil <hverkuil@...all.nl>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        linux-media@...r.kernel.org,
        Ricardo Ribalda <ribalda@...omium.org>,
        linux-kernel@...r.kernel.org, Hans Verkuil <hans.verkuil@...co.com>
Subject: [PATCH RESEND v2 3/7] media: uvcvideo: Return -EACCES for Wrong state error

For error 2 (Wrong state) return -EACCES instead of -EILSEQ.
EACCES is a much more appropriate error code. EILSEQ will return
"Invalid or incomplete multibyte or wide character." in strerror(),
which is a *very* confusing message.

Suggested-by: Hans Verkuil <hans.verkuil@...co.com>
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
 drivers/media/usb/uvc/uvc_video.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 2cf7f692c0bb..497073a50194 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -108,7 +108,7 @@ int uvc_query_ctrl(struct uvc_device *dev, u8 query, u8 unit,
 	case 1: /* Not ready */
 		return -EBUSY;
 	case 2: /* Wrong state */
-		return -EILSEQ;
+		return -EACCES;
 	case 3: /* Power */
 		return -EREMOTE;
 	case 4: /* Out of range */

-- 
2.39.0.rc0.267.gcb52ba06e7-goog-b4-0.11.0-dev-696ae