Hi, On Tue, Jan 24, 2012 at 16:46:05, Ido Yariv wrote: > The davinci mmc interrupt handler fills the fifo, as long as the DXRDY > or DRRDY bits are set in the status register. > > If interrupts fire during this loop, they will be handled by the > handler, but the interrupt controller will still buffer these. As a > result, the handler will be called again to serve these needlessly. In > order to avoid these spurious interrupts, keep interrupts masked while > filling the fifo. > > Signed-off-by: Ido Yariv <i...@wizery.com> > ---
Tested this series on OMAP-L138 EVM using SD card. Observed that number of interrupts during IO transaction were less compared to earlier and there was no drop in performance numbers. Tested-by: Rajashekhara, Sudhakar <sudhakar....@ti.com> Regards, Sudhakar -- 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
