Messages in this thread | | | Date | Sat, 7 Oct 2006 16:17:09 +0200 | From | "pHilipp Zabel" <> | Subject | Re: [PATCH] [MMC] Use own work queue |
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Hi,
On 10/1/06, Pierre Ossman <drzeus@drzeus.cx> wrote: > The MMC layer uses the standard work queue for doing card detection. As > this queue is shared with other crucial subsystems, the effects of a long > (and perhaps buggy) detection can cause the system to be unusable. E.g. the > keyboard stops working while the detection routine is running. > > The solution is to add a specific mmc work queue to run the detection code > in. This is similar to how other subsystems handle detection (a full > kernel thread is the most common theme). > > Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This patch makes pxamci stop working for me on a HTC Magician (PXA272). Switching from 2.6.18 to 2.6.19-rc1 I got a kernel panic:
mmc0: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 PXAMCI: clkrt = 0 cmdat = 0 VFS: Cannot open root device "mmcblk0p2" or unknown-block(0,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
After removing this patch from 2.6.19-rc1, everything is working again. Are there any changes to pxamci.c needed to be compatible with it?
regards Philipp - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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