[PATCH 1/2] mmc: uniphier-sd: fix DMA disabling

Masahiro Yamada
2018-10-12T14:58:47Z

Once DMA is enabled, it is not possible to disable it because
uniphier_sd_dma_endisable() always sets the DMA_ENABLE_DMASDRW bit
regardless of the argument 'enable'. It should disable DMA when
'enable' is false.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

drivers/mmc/host/uniphier-sd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/uniphier-sd.c b/drivers/mmc/host/uniphier-sd.c
index 10e7b30..10d49aa 100644
--- a/drivers/mmc/host/uniphier-sd.c
+++ b/drivers/mmc/host/uniphier-sd.c
@@ -78,7 +78,7 @@ static void *uniphier_sd_priv(struct tmio_mmc_host *host)

static void uniphier_sd_dma_endisable(struct tmio_mmc_host *host, int enable)
{
- sd_ctrl_write16(host, CTL_DMA_ENABLE, DMA_ENABLE_DMASDRW);
+ sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? DMA_ENABLE_DMASDRW : 0);
}

/* external DMA engine */
--
2.7.4