linux-kernel - [PATCH] media: amphion: release m2m ctx when releasing vpu instance

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Message-Id: <20220829053316.19400-1-ming.qian@nxp.com>
Date:   Mon, 29 Aug 2022 13:33:16 +0800
From:   Ming Qian <ming.qian@....com>
To:     mchehab@...nel.org, hverkuil-cisco@...all.nl
Cc:     shawnguo@...nel.org, robh+dt@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        xiahong.bao@....com, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] media: amphion: release m2m ctx when releasing vpu instance

release m2m ctx in the callback function that
release the vpu instance, then there is no need
to add lock around releasing m2m ctx.

Fixes: 3cd084519c6f ("media: amphion: add vpu v4l2 m2m support")
Signed-off-by: Ming Qian <ming.qian@....com>
---
 drivers/media/platform/amphion/vpu_v4l2.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index 1f18289aa47a..99ad2f1c5a53 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -688,6 +688,10 @@ static int vpu_v4l2_release(struct vpu_inst *inst)
 		inst->workqueue = NULL;
 	}
 
+	if (inst->fh.m2m_ctx) {
+		v4l2_m2m_ctx_release(inst->fh.m2m_ctx);
+		inst->fh.m2m_ctx = NULL;
+	}
 	v4l2_ctrl_handler_free(&inst->ctrl_handler);
 	mutex_destroy(&inst->lock);
 	v4l2_fh_del(&inst->fh);
@@ -770,13 +774,6 @@ int vpu_v4l2_close(struct file *file)
 
 	vpu_trace(vpu->dev, "tgid = %d, pid = %d, inst = %p\n", inst->tgid, inst->pid, inst);
 
-	vpu_inst_lock(inst);
-	if (inst->fh.m2m_ctx) {
-		v4l2_m2m_ctx_release(inst->fh.m2m_ctx);
-		inst->fh.m2m_ctx = NULL;
-	}
-	vpu_inst_unlock(inst);
-
 	call_void_vop(inst, release);
 	vpu_inst_unregister(inst);
 	vpu_inst_put(inst);
-- 
2.37.1