950-0469-bcm2835-sdhost-Fix-DMA-channel-leak-on-error-remove.patch

From 73623c76c8bc8c41a4afefc1eee84dfc5979d652 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Wed, 12 Jun 2019 20:45:17 +0100
Subject: [PATCH] bcm2835-sdhost: Fix DMA channel leak on error/remove

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
 drivers/mmc/host/bcm2835-sdhost.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/bcm2835-sdhost.c
+++ b/drivers/mmc/host/bcm2835-sdhost.c
@@ -2154,6 +2154,8 @@ static int bcm2835_sdhost_probe(struct p
 
 err:
 	pr_debug("bcm2835_sdhost_probe -> err %d\n", ret);
+	if (host->dma_chan_rxtx)
+		dma_release_channel(host->dma_chan_rxtx);
 	mmc_free_host(mmc);
 
 	return ret;
@@ -2174,7 +2176,8 @@ static int bcm2835_sdhost_remove(struct
 	del_timer_sync(&host->timer);
 
 	tasklet_kill(&host->finish_tasklet);
-
+	if (host->dma_chan_rxtx)
+		dma_release_channel(host->dma_chan_rxtx);
 	mmc_free_host(host->mmc);
 	platform_set_drvdata(pdev, NULL);