linux-kernel - [PATCH v6 02/17] media: v4l2-ioctl: check_ext_ctrls: Return -EINVAL on V4L2_CTRL_WHICH_REQUEST

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Date:   Wed, 17 Mar 2021 17:44:56 +0100
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        tfiga@...omium.org
Cc:     Ricardo Ribalda <ribalda@...omium.org>, stable@...r.kernel.org
Subject: [PATCH v6 02/17] media: v4l2-ioctl: check_ext_ctrls: Return -EINVAL on V4L2_CTRL_WHICH_REQUEST_VAL

Drivers that do not use the ctrl-framework use this function instead.

- Return -EINVAL for request_api calls

Fixes v4l2-compliance:
Buffer ioctls (Input 0):
		fail: v4l2-test-buffers.cpp(1994): ret != EINVAL && ret != EBADR && ret != ENOTTY
	test Requests: FAIL

Cc: stable@...r.kernel.org
Fixes: 6fa6f831f095 ("media: v4l2-ctrls: add core request support")
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
 drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 403f957a1012..76e2e595d88d 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -931,6 +931,8 @@ static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl)
 	case V4L2_CTRL_WHICH_DEF_VAL:
 	case V4L2_CTRL_WHICH_CUR_VAL:
 		return true;
+	case V4L2_CTRL_WHICH_REQUEST_VAL:
+		return false;
 	}
 
 	/* Check that all controls are from the same control class. */
-- 
2.31.0.rc2.261.g7f71774620-goog