Hi Guennadi-san, 2012/02/03 7:19, Guennadi Liakhovetski wrote: [ snip ] >> >> Thank you for your comment. >> >> I investigaed the issue. I found out the renesas_usbhs driver may >> call tx_submit() in the callback() of the dma-simple finally. > > Sorry, in my first reply to this your email I misread the renesas_usbhs > for an issue with your new SUDMAC driver. Since this is not the case and > my patch seems to be causing a regression, I'll look at it. Thank you for the comment. I found out that if the "power_up" is 0 in the sample_tx_submit(), the pm_state will be changed to "PENDING". And then, even if the renesas_usbhs calls dma_async_issue_pending(), the dma-simple driver doesn't call the simple_chan_xfer_ld_queue(). This is because the driver will call the simple_chan_xfer_ld_queue() when the pm_state is "ESTABLISHED" only. So I guess that we have to modify the simple_issue_pending(). Best regards, Yoshihiro Shimoda > Thanks > Guennadi > > --- > Guennadi Liakhovetski, Ph.D. > Freelance Open-Source Software Developer > http://www.open-technology.de/ > -- Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> -- 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
