brain-hackers_pepepper-mirror
/
linux-brain
mirror of https://github.com/brain-hackers/linux-brain.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

mmc: renesas_sdhi_internal_dmac: Fix DMA buffer alignment from 8 to 128-bytes 

[ Upstream commit d7aefb2887601cf1fc3f86f55d43b2c9aece5e8f ]

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: 2a68ea7896 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Takeshi Saito 2020-12-16 19:29:31 +09:00 committed by Greg Kroah-Hartman
parent 2096ca1196
commit f201f050a5
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mmc/host/renesas_sdhi_internal_dmac.c
View File

@ -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) {