Messages in this thread | | | From | John Stultz <> | Date | Fri, 12 Aug 2016 16:34:16 -0700 | Subject | Re: WARNING: CPU: 0 PID: 1271 at drivers/mmc/core/core.c:991 mmc_release_host+0xa0/0xa8 |
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On Fri, Aug 12, 2016 at 1:30 AM, Shawn Lin <shawn.lin@rock-chips.com> wrote: > If special req meets, mrq_pre and mrq_cur are both null after schedule > queue. And for this special req, host->claimed is released. For the > next req peeking from blk, we run into mmc_get_card again which means > we should never meet this WARN when releasing host. So it's > interesting to dig out actually what is happening there... > > But at least for dw_mmc-rockchip, we have been using this feature, > ERASE/Trim/discard, for years. I didn't see it ever. Anyway from the > code I was reading, I don't think it should be issue of this commit. > > Please look at this regression report I saw. > > https://lkml.org/lkml/2016/8/11/130
Hrm. Unfortunately I was still able to trigger the issue with the fix from that mail.
thanks -john
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