From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ADAEE178CE4; Mon, 12 Aug 2024 16:15:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723479350; cv=none; b=d4COVzc4Nq3haRchaN7zHb7vysIXncNCaAggY9b1iMES21U8oe9tEVOAwywkUNaYcn5G4XjOIfePg63q8WzxUunNB1jn89DPi01BuuPJgDQaqrs3/0fVmGMeJa1xu6Xb/yxxY/OBGqNz76yEWhI4NCZzri8YvQJGwZQSvHi+U40= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723479350; c=relaxed/simple; bh=1jgJYuE+wWlDh05ODolRNdYH/gHBuoJymtVGmtw70Ss=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Imlzbjc9brDjYDEzHEmU63wGuni0ckZhX1fSI+luHGfW1LJTvFccvqQy1iAIly5o7QuVq1Ojb+CqR/wrXKZmO4TBl8NrUvjFspUU+NHmxhr7qqt0HW19AseQUQSnVh5Txx4nO7w9hsnUDsc1L3TgIAIt9EQR4aN0XK80sGOfpcs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=fziH1Hk6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="fziH1Hk6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33740C4AF0D; Mon, 12 Aug 2024 16:15:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723479350; bh=1jgJYuE+wWlDh05ODolRNdYH/gHBuoJymtVGmtw70Ss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fziH1Hk6YJFqsxF2y92lDkmPKrLFo7ExzUaWVXAFaxUq76/gOCY67lNMrDXG73fB4 kglw6GSYtDb8QKc4LzUh43aZqoUic/MLPDVoGszITWmsDj9OkEzhz1CK/mrqm7o9v0 1WVEEC5kGrWW4oRSfR43O1hF2l8fuQy/b0oEVRtA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ming Qian , Sebastian Fricke , Hans Verkuil , Sasha Levin Subject: [PATCH 6.6 058/189] media: amphion: Remove lock in s_ctrl callback Date: Mon, 12 Aug 2024 18:01:54 +0200 Message-ID: <20240812160134.378191650@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240812160132.135168257@linuxfoundation.org> References: <20240812160132.135168257@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ming Qian [ Upstream commit 065927b51eb1f042c3e026cebfd55e72ccc26093 ] There is no need to add a lock in s_ctrl callback, it has been synchronized by the ctrl_handler's lock, otherwise it may led to a deadlock if the driver calls v4l2_ctrl_s_ctrl(). Signed-off-by: Ming Qian Signed-off-by: Sebastian Fricke Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/platform/amphion/vdec.c | 2 -- drivers/media/platform/amphion/venc.c | 2 -- 2 files changed, 4 deletions(-) diff --git a/drivers/media/platform/amphion/vdec.c b/drivers/media/platform/amphion/vdec.c index 133d77d1ea0c3..4f438eaa7d385 100644 --- a/drivers/media/platform/amphion/vdec.c +++ b/drivers/media/platform/amphion/vdec.c @@ -195,7 +195,6 @@ static int vdec_op_s_ctrl(struct v4l2_ctrl *ctrl) struct vdec_t *vdec = inst->priv; int ret = 0; - vpu_inst_lock(inst); switch (ctrl->id) { case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE: vdec->params.display_delay_enable = ctrl->val; @@ -207,7 +206,6 @@ static int vdec_op_s_ctrl(struct v4l2_ctrl *ctrl) ret = -EINVAL; break; } - vpu_inst_unlock(inst); return ret; } diff --git a/drivers/media/platform/amphion/venc.c b/drivers/media/platform/amphion/venc.c index 4eb57d793a9c0..16ed4d21519cd 100644 --- a/drivers/media/platform/amphion/venc.c +++ b/drivers/media/platform/amphion/venc.c @@ -518,7 +518,6 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl) struct venc_t *venc = inst->priv; int ret = 0; - vpu_inst_lock(inst); switch (ctrl->id) { case V4L2_CID_MPEG_VIDEO_H264_PROFILE: venc->params.profile = ctrl->val; @@ -579,7 +578,6 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl) ret = -EINVAL; break; } - vpu_inst_unlock(inst); return ret; } -- 2.43.0