Re: [PATCH v2] mmc: fix host release issue after discardoperation

[Ray Jui]

On 11/26/2013 2:06 PM, Chris Ball wrote:
> Hi Ray,
>
> On Sat, Oct 26 2013, Ray Jui wrote:
> > Under function mmc_blk_issue_rq, after an MMC discard operation,
> > the MMC request data structure may be freed in memory. Later in
> > the same function, the check of req->cmd_flags & MMC_REQ_SPECIAL_MASK
> > is dangerous and invalid. It causes the MMC host not to be released
> > when it should
> >
> > This patch fixes the issue by marking the special request down before
> > the discard/flush operation
> >
> > Reported by: Harold (SoonYeal) Yang <haroldsy@xxxxxxxxxxxx>
> > Signed-off-by: Ray Jui <rjui@xxxxxxxxxxxx>
> > Reviewed-by: Seungwon Jeon <tgih.jun@xxxxxxxxxxx>
>
> Thanks, pushed to mmc-next for 3.14 and -stable.
>
> - Chris.
Great!

Thanks,

Ray

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