| Message ID | 1444981443-38869-1-git-send-email-yangbo.lu@freescale.com (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
On 16 October 2015 at 09:44, Yangbo Lu <yangbo.lu@freescale.com> wrote: > 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 <yangbo.lu@freescale.com> Thanks, applied for next. Kind regards Uffe > --- > 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 majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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. */
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 <yangbo.lu@freescale.com> --- drivers/mmc/host/sdhci-of-esdhc.c | 6 ++++++ 1 file changed, 6 insertions(+)