On 04/23/2013 06:57 PM, Seungwon Jeon wrote: > Hi, > > On Thursday, April 18, 2013, Joonyoung Shim wrote: >> If pending interrupt for IDMAC exists when probe, it will call interrupt >> handler unnecessarily. >> >> Signed-off-by: Joonyoung Shim <jy0922.s...@samsung.com> >> --- >> drivers/mmc/host/dw_mmc.c | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c >> index 323c502..b0057a2 100644 >> --- a/drivers/mmc/host/dw_mmc.c >> +++ b/drivers/mmc/host/dw_mmc.c >> @@ -2192,6 +2192,7 @@ int dw_mci_probe(struct dw_mci *host) >> >> /* Clear the interrupts for the host controller */ >> mci_writel(host, RINTSTS, 0xFFFFFFFF); >> + mci_writel(host, IDSTS, 0xFFFFFFFF); > 0x337 is correct for bits. Could you check the bit filed? I think that don't care which reset value used. "It is recommended that you write 0xffff_ffff to the Raw Interrupt register @0x044 and IDSTS @0x8C in order to clear any pending interrupts before setting the int_enable bit." This boot mode case is also used the 0xffff_ffff. > >> mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */ >> >> /* Put in max timeout */ >> @@ -2243,6 +2244,7 @@ int dw_mci_probe(struct dw_mci *host) >> * receive ready and error such as transmit, receive timeout, crc error >> */ >> mci_writel(host, RINTSTS, 0xFFFFFFFF); >> + mci_writel(host, IDSTS, 0xFFFFFFFF); > No need, it's already done above. > >> mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | >> SDMMC_INT_TXDR | SDMMC_INT_RXDR | >> DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); >> @@ -2393,6 +2395,7 @@ int dw_mci_resume(struct dw_mci *host) >> mci_writel(host, FIFOTH, host->fifoth_val); >> >> mci_writel(host, RINTSTS, 0xFFFFFFFF); >> + mci_writel(host, IDSTS, 0xFFFFFFFF); > Same, incorrect bits. > > Thanks, > Seungwon Jeon > >> mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER | >> SDMMC_INT_TXDR | SDMMC_INT_RXDR | >> DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); >> -- >> 1.7.9.5 >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in >> the body of a message to majord...@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > >
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