From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sun, 11 Nov 2018 20:23:55 +0000 (+0100)
Subject: mmc: bcm2835: Release DMA channel on driver unload
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=5eae252db3856e62c778832d4d59f6efc5b0aaf9;p=openwrt%2Fstaging%2Fblogic.git

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>
---

diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 096e737dffaa..0711e251940c 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);