regression on rk3288 with - mmc: dw_mmc: Remove old card detect infrastructure
dianders at chromium.org
Fri Dec 12 15:54:15 PST 2014
On Fri, Dec 12, 2014 at 12:22 PM, Heiko Stübner <heiko at sntech.de> wrote:
> 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 .
> 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
> 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 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
Could it be a different set of kernel config options? That's about
the best guess I can come up with...
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