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[35.245.224.76]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7ae75762a36sm360886085a.124.2024.10.08.08.00.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Oct 2024 08:00:08 -0700 (PDT) From: Ricardo Ribalda Subject: [PATCH v2 0/2] media: uvcvideo: Support partial control reads and minor changes Date: Tue, 08 Oct 2024 15:00:06 +0000 Message-Id: <20241008-uvc-readless-v2-0-04d9d51aee56@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAPZIBWcC/3XMQQ7CIBCF4as0sxYDFBN05T2aLiidlklsMYMlm oa7i927/F/yvh0SMmGCW7MDY6ZEca2hTw344NYZBY21QUttlJRWbNkLRjc+MCWh2+k6WO9GObR QL0/Gid4H1/W1A6VX5M+hZ/Vb/0BZCSmk0c6bi1WTMXcfOC60LefIM/SllC/pl/3hqwAAAA== To: Laurent Pinchart , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Ricardo Ribalda , Sakari Ailus , stable@vger.kernel.org X-Mailer: b4 0.13.0 Some cameras do not return all the bytes requested from a control if it can fit in less bytes. Eg: returning 0xab instead of 0x00ab. Support these devices. Also, now that we are at it, improve uvc_query_ctrl() logging. Signed-off-by: Ricardo Ribalda --- Changes in v2: - Rewrite error handling (Thanks Sakari) - Discard 2/3. It is not needed after rewriting the error handling. - Link to v1: https://lore.kernel.org/r/20241008-uvc-readless-v1-0-042ac4581f44@chromium.org --- Ricardo Ribalda (2): media: uvcvideo: Support partial control reads media: uvcvideo: Add more logging to uvc_query_ctrl() drivers/media/usb/uvc/uvc_video.c | 27 +++++++++++++++++++++++---- 1 file changed, 23 insertions(+), 4 deletions(-) --- base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc change-id: 20241008-uvc-readless-23f9b8cad0b3 Best regards, -- Ricardo Ribalda