On 13 August 2014 15:38, Doug Anderson <diand...@chromium.org> wrote: > Hi, > > On Wed, May 21, 2014 at 2:08 AM, Seungwon Jeon <tgih....@samsung.com> wrote: >> On Wed, May 21, 2014, Doug Anderson wrote: >>> If we happened to get a data error at just the wrong time the dw_mmc >>> driver could get into a state where it would never complete its >>> request. That would leave the caller just hanging there. >>> >>> We fix this two ways and both of the two fixes on their own appear to >>> fix the problems we've seen: >>> >>> 1. Fix a race in the tasklet where the interrupt setting the data >>> error happens _just after_ we check for it, then we get a >>> EVENT_XFER_COMPLETE. We fix this by repeating a bit of code. >>> 2. Fix it so that if we detect that we've got an error in the "data >>> busy" state and we're not going to do anything else we end the >>> request and unblock anyone waiting. >>> >>> Signed-off-by: Doug Anderson <diand...@chromium.org> >>> Signed-off-by: Yuvaraj Kumar C D <yuvaraj...@gmail.com> >> >> It will be applied after "mmc: dw_mmc: change to use recommended reset >> procedure" >> >> Acked-by: Seungwon Jeon <tgih....@samsung.com> >> >> Thanks, >> Seungwon Jeon > > I saw that Ulf applied "mmc: dw_mmc: change to use recommended reset > procedure". Could we apply this one now, too? Do you want me to > repost?
Please repost and rebase if needed. Kind regards Uffe > > -Doug -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
