[PATCH 1/2] mmc: renesas_sdhi_internal_dmac: Fix missing unmap in error patch

[Yoshihiro Shimoda]

This patch fixes an issue that lacks the dma_unmap_sg() calling in
the error patch of renesas_sdhi_internal_dmac_start_dma().

Fixes: 0cbc94daa554 ("mmc: renesas_sdhi_internal_dmac: limit DMA RX for old 
SoCs")
Cc: <sta...@vger.kernel.org> # v4.17+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com>
---
 drivers/mmc/host/renesas_sdhi_internal_dmac.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c 
b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index f7f9773..d503511 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -173,8 +173,11 @@
        if (data->flags & MMC_DATA_READ) {
                dtran_mode |= DTRAN_MODE_CH_NUM_CH1;
                if (test_bit(SDHI_INTERNAL_DMAC_ONE_RX_ONLY, &global_flags) &&
-                   test_and_set_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, 
&global_flags))
+                   test_and_set_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, 
&global_flags)) {
+                       dma_unmap_sg(&host->pdev->dev, sg, host->sg_len,
+                                    mmc_get_dma_dir(data));
                        goto force_pio;
+               }
        } else {
                dtran_mode |= DTRAN_MODE_CH_NUM_CH0;
        }
-- 
1.9.1