diff options
| author | Kevin Liu <[email protected]> | 2017-03-08 15:16:44 +0800 |
|---|---|---|
| committer | Stefan Roese <[email protected]> | 2017-03-29 07:38:06 +0200 |
| commit | 5b3e5b56969cb61d73a7c293679ba1536a94e70e (patch) | |
| tree | bf3ac77bf6b27ce2e3c1d3500519e77a3aa78c25 /drivers | |
| parent | aff32df522e5b1a7e4391fd00ffe14a3f107fcd3 (diff) | |
mmc: sdhci: only flush cache for data command
No need to flush cache for command without data.
Signed-off-by: Kevin Liu <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/sdhci.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 93cefd89cd4..c94d58db65c 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -242,8 +242,10 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT); #ifdef CONFIG_MMC_SDHCI_SDMA - trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE); - flush_cache(start_addr, trans_bytes); + if (data != 0) { + trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE); + flush_cache(start_addr, trans_bytes); + } #endif sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND); start = get_timer(0); |