Hi, On Fri, Dec 12, 2014 at 12:22 PM, Heiko Stübner <heiko@xxxxxxxxx> wrote: > Hi, > > when trying linux-next for 20141210 on my rk3288 eval board I got errors > when ejecting sd cards. Especially a timeout for a command and following > this an rcu stall which essentially stops everything [0]. > > My way to reproduce the issue is: > - boot into an initramfs > - insert card > - remove card > - boom > > It happens 100% of the time on the first removal of the card. > > > Bisecting the issue brought me to > > first bad commit > 6130e7a9c34d01afbd4e7e215846d1f2d70333bb > mmc: dw_mmc: Remove old card detect infrastructure > > and indeed if I revert this one, card ejection works again - also multiple > times in a row. Affected machine is a rk3288-evb-rk808 board which > currently uses the internal card-detect mechanism of the dw_mmc and > relevant git history (--oneline) is: > > 864de9b Revert "mmc: dw_mmc: Remove old card detect infrastructure" > 5bd48e0 ARM: dts: Bump SD card pin drive strength up on rk3288-evb > 12fd072 Add linux-next specific files for 20141210 > ... > > > I'll try to dig deeper, but if anybody has ideas beforehand I would also > be very glad. I tried to reproduce this on the same board on 20141211. I have a different bootloader, but I hope that doesn't matter? git describe next-20141211-1-gf8afbb8 $ git log --oneline next-20141211~.. f8afbb8 FROMLIST: ARM: dts: Bump SD card pin drive strength up on rk3288-evb 291ca61 Add linux-next specific files for 20141211 In inserted 3 different cards into the SD card slots (a micro UHS, an older micro one, and a full sized UHS). I inserted / ejected each one several times. Could it be a different set of kernel config options? That's about the best guess I can come up with... -- 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
