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

mmc: sdhci: skip cache invalidation if DMA is not used 

If DMA(SDMA or ADMA) is not used, the cache invalidation
after reading is no need, should be skipped. Otherwise
U-Boot may hang at the cache invalidation.

Found this issue and tested this fix on DragonBoard 410c.

Fixes: commit 4155ad9aac ("mmc: sdhci: fix missing cache invalidation after reading by DMA")

Signed-off-by: Yuezhang.Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
This commit is contained in:
Yuezhang.Mo@sony.com 2021-01-14 05:46:50 +00:00 committed by Peng Fan
parent 1019b19665
commit 37e1362efc
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mmc/sdhci.c
View File

@ -177,8 +177,10 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data)
}
} while (!(stat & SDHCI_INT_DATA_END));
#if (defined(CONFIG_MMC_SDHCI_SDMA) || CONFIG_IS_ENABLED(MMC_SDHCI_ADMA))
dma_unmap_single(host->start_addr, data->blocks * data->blocksize,
mmc_get_dma_dir(data));
#endif
return 0;
}