Messages in this thread | | | Subject | MMC/SD Root filesystem suspend/resume problems | From | Richard Purdie <> | Date | Thu, 19 Jul 2007 16:53:39 +0100 |
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Hi Pierre,
Lots of Linux handhelds use MMC/SD devices as the root file system. This has worked quite reliably for many kernel versions. In 2.6.22, it seems that if you suspend such a system then resume it, the device locks up. Trying to execute anything on the filesystem results in a "Permission Denied" message. I did see a message from the MMC subsystem saying it had redetected the card. There are also messages on the console like "MMC: killing requests for dead queue" each time you suspend/resume.
I'm away from my serial cables at the moment but I may be able to provide more debug when I have them over the weekend. Have you any ideas on why this is breaking?
For reference, I've reproduced the problem with both the PXA host driver and different driver not merged into mainline (ASIC3).
Cheers,
Richard
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