Hi Swami, Swaminathan S wrote: > Signed-off-by: Swaminathan S <[EMAIL PROTECTED]> > > This patch implements a tasklet to poll for TX Endpoint FIFO > empty status before completing a transfer. This is required > in the context of DaVinci CPPI DMA Tx transfers. CPPI > DMA engine generates completion interrupt before the data > actually moves out of TX FIFO
I guess the DMA interrupt is generated after the data have been moved from a s/w buffer to TX FIFO. > and the driver needs to save the > Data toggle after ensuring that the FIFO is empty. why don't rely on an endpoint interrupt which is generated after a USB transaction is complete? Thanks, Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
