From d7aefb2887601cf1fc3f86f55d43b2c9aece5e8f Mon Sep 17 00:00:00 2001
From: Takeshi Saito <takeshi.saito.xv@renesas.com>
Date: Wed, 16 Dec 2020 19:29:31 +0900
Subject: [PATCH] mmc: renesas_sdhi_internal_dmac: Fix DMA buffer alignment from 8 to 128-bytes
Git-commit: d7aefb2887601cf1fc3f86f55d43b2c9aece5e8f
Patch-mainline: v5.12-rc1
References: git-fixes
According to the latest datasheet, the internal DMAC buffer alignment
R-Car Gen3 SDHI HW should be 128-bytes. So, fix it.
Signed-off-by: Takeshi Saito <takeshi.saito.xv@renesas.com>
[shimoda: revise commit description, rebase]
Fixes: 2a68ea7896e3 ("mmc: renesas-sdhi: add support for R-Car Gen3 SDHI DMAC")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/1608114572-1892-2-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/mmc/host/renesas_sdhi_internal_dmac.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index fe13e1ea22dc..f3e76d6b3e3f 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -186,8 +186,8 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
mmc_get_dma_dir(data)))
goto force_pio;
- /* This DMAC cannot handle if buffer is not 8-bytes alignment */
- if (!IS_ALIGNED(sg_dma_address(sg), 8))
+ /* This DMAC cannot handle if buffer is not 128-bytes alignment */
+ if (!IS_ALIGNED(sg_dma_address(sg), 128))
goto force_pio_with_unmap;
if (data->flags & MMC_DATA_READ) {
--
2.26.2