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mmc: sdhci: only flush cache for data command

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No need to flush cache for command without data.

Signed-off-by: Kevin Liu <kevinliu@asrmicro.com>
This commit is contained in:
Kevin Liu 2017-03-08 15:16:44 +08:00 committed by Jaehoon Chung
parent 83b3248e7e
commit fa7720b21e
1 changed files with 4 additions and 2 deletions
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6
drivers/mmc/sdhci.c
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@ -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);