From 5eae252db3856e62c778832d4d59f6efc5b0aaf9 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sun, 11 Nov 2018 21:23:55 +0100
Subject: [PATCH] mmc: bcm2835: Release DMA channel on driver unload

We need to release the slave DMA channel during driver unload.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
 drivers/mmc/host/bcm2835.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 096e737dffaaa..0711e251940c5 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -1446,6 +1446,9 @@ static int bcm2835_remove(struct platform_device *pdev)
 	cancel_work_sync(&host->dma_work);
 	cancel_delayed_work_sync(&host->timeout_work);
 
+	if (host->dma_chan_rxtx)
+		dma_release_channel(host->dma_chan_rxtx);
+
 	mmc_free_host(host->mmc);
 	platform_set_drvdata(pdev, NULL);
 
-- 
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