To ensure that complete the request, add udelay(100). Also increased the timeout value to 10000. (Because timeout value is short, there is the case that didn't transfer data)
Signed-off-by: Jaehoon Chung jh80.chung@samsung.com --- drivers/mmc/sdhci.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index ac39e48..f71a14b 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -83,7 +83,7 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data, { unsigned int stat, rdy, mask, timeout, block = 0;
- timeout = 10000; + timeout = 100000; rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL; mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE; do { @@ -239,6 +239,7 @@ int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !is_aligned && (data->flags == MMC_DATA_READ)) memcpy(data->dest, aligned_buffer, trans_bytes); + udelay(100); return 0; }