A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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mmc: uniphier-sd: fix DMA disabling

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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 <[email protected]>
Acked-by: Wolfram Sang <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
This commit is contained in:
Masahiro Yamada 2018-10-12 23:57:37 +09:00 • committed by Ulf Hansson
commit b7ced87746
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/uniphier-sd.c
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@ -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 */