The eSDHC doesn't have a standard power control register, so when writing this register in stack we should do nothing to avoid incorrect operation.
Signed-off-by: Yangbo Lu <[email protected]> --- drivers/mmc/host/sdhci-of-esdhc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 7b9282b..90e94a0 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -183,6 +183,12 @@ static u32 esdhc_writeb_fixup(struct sdhci_host *host, int shift = (spec_reg & 0x3) * 8; /* + * eSDHC doesn't have a standard power control register, so we do + * nothing here to avoid incorrect operation. + */ + if (spec_reg == SDHCI_POWER_CONTROL) + return old_value; + /* * "DMA select" location is offset 0x28 in SD specification, but on * P5020 or P3041, it's located at 0x29. */ -- 2.1.0.27.g96db324 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
