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 096e737dffaaace561812360bbc7259fdfdd9ce2..0711e251940c545bee45c63cf6d18b62996d16c3 100644 (file)
--- 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);