[PATCH 1/4] rcar-vin: Do not try to stop stream if not running

From: "Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
To: linux-media@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
	"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH 1/4] rcar-vin: Do not try to stop stream if not running
Date: Thu, 12 Nov 2020 23:51:44 +0100	[thread overview]
Message-ID: <20201112225147.1672622-2-niklas.soderlund+renesas@ragnatech.se> (raw)
In-Reply-To: <20201112225147.1672622-1-niklas.soderlund+renesas@ragnatech.se>

Do not attempt to stop the streaming if the stream is not running.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
 drivers/media/platform/rcar-vin/rcar-dma.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c
index 5a5f0e5007478c8d..eae25972ed7df2b6 100644
--- a/drivers/media/platform/rcar-vin/rcar-dma.c
+++ b/drivers/media/platform/rcar-vin/rcar-dma.c
@@ -1302,6 +1302,11 @@ void rvin_stop_streaming(struct rvin_dev *vin)
 
 	spin_lock_irqsave(&vin->qlock, flags);
 
+	if (vin->state == STOPPED) {
+		spin_unlock_irqrestore(&vin->qlock, flags);
+		return;
+	}
+
 	vin->state = STOPPING;
 
 	/* Wait until only scratch buffer is used, max 3 interrupts. */
-- 
2.29.2

