Hi Alexey, On Tue, Nov 5, 2013 at 2:43 AM, Alexey Neyman <stilor@xxxxxxx> wrote: > [Patch ping #3: anyone interested in making sdhci_irq a bit faster?] > > Hi all, > > I've discovered that the sdhci_irq() function needlessly iterates re-reading > the interrupt status and doing nothing (until it runs out of max_loops) when > it handles the "Card Interrupt" status in the interrupt status register. > > The reason is that the "Card Interrupt" bit is not cleared until the > sdhci_irq() calls mmc_signal_sdio_irq(), so if Card Interrupt was asserted, > re-reading the interrupt status will find this bit set over and over, even if > no other bits are reported. > > The fix: ignore Card Interrupt bits in the interrupt status if we already know > that mmc_signal_sdio_irq() is going to be called at the end of sdhci_irq(). > > Signed-off-by: Alexey Neyman <stilor@xxxxxxx> I also noticed this issue. Your fix looks correct to me. But as following community working way, you need send out patches formerly, not attach a diff file. You can refer to 'git send-email' or try with gmail. BTW, please enrich your patch commit message. Regards Dong Aisheng -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
