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Date: Thu, 19 Jul 2007 17:42:54 +0100 From: Richard Purdie <rpurdie@...ys.net> To: Pierre Ossman <drzeus-mmc@...eus.cx> Cc: kernel list <linux-kernel@...r.kernel.org> Subject: Re: MMC/SD Root filesystem suspend/resume problems On Thu, 2007-07-19 at 16:57 +0100, Richard Purdie wrote: > 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). Just to follow up, if I boot with a rootfs from elsewhere and mount the mmc card then suspend/resume, it corrupts the data on the card too so it looks like some general suspend/resume problem on mounted filesystems. Richard - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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