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Thu, 10 Sep 2026 05:44:26 -0700 (PDT) Received: from zephyr ([2407:d000:508:1732:c5ca:107f:bc81:7575]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49d26be64a5sm69354095e9.6.2026.09.10.05.44.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Sep 2026 05:44:26 -0700 (PDT) From: Muhammad Israr <7israr.work@gmail.com> To: parthiban.veerasooran@microchip.com, christian.gromm@microchip.com Cc: gregkh@linuxfoundation.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Muhammad Israr <7israr.work@gmail.com> Subject: [PATCH] staging: most: video: add comments to mutex and spinlock definitions Date: Thu, 10 Sep 2026 17:44:03 +0500 Message-ID: <20260910124403.95741-1-7israr.work@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add comments describing what the list_lock spinlock and lock mutex in struct most_video_dev protect, per checkpatch.pl's "definition without comment" check. list_lock protects the pending_mbos list. The mutex is registered as vdev->lock and is used by the V4L2 core to serialize video_device ioctl calls; it is not locked directly in this file. Signed-off-by: Muhammad Israr <7israr.work@gmail.com> --- drivers/staging/most/video/video.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/most/video/video.c b/drivers/staging/most/video/video.c index 3a0445ff62f4..41b617b553aa 100644 --- a/drivers/staging/most/video/video.c +++ b/drivers/staging/most/video/video.c @@ -33,6 +33,7 @@ struct most_video_dev { bool mute; struct list_head pending_mbos; + /* protects pending_mbos */ spinlock_t list_lock; struct v4l2_device v4l2_dev; @@ -40,6 +41,7 @@ struct most_video_dev { struct video_device *vdev; unsigned int ctrl_input; + /* registered as vdev->lock; serializes video_device ioctls */ struct mutex lock; wait_queue_head_t wait_data; -- 2.55.0