Re: OMAP4 bust: MMC causes hung tasks

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Hi,

On Wed, Feb 20 2013, Russell King - ARM Linux wrote:
> MMC looks sick - not sure what's going on with it though.  mmc0 I believe
> is the onboard eMMC, mmc1 is the external SD card with the rootfs.  Any
> ideas?

Is this with 3.8 final, or mmc-next?

> [    1.253265] mmc0: new high speed MMC card at address 0001
> [    1.260650] mmcblk0: mmc0:0001 SEM08G 7.39 GiB
> [    1.265594] mmcblk0boot0: mmc0:0001 SEM08G partition 1 1.00 MiB
> [    1.272003] mmcblk0boot1: mmc0:0001 SEM08G partition 2 1.00 MiB
> [    1.278411] mmcblk0rpmb: mmc0:0001 SEM08G partition 3 128 KiB
> [    1.289947]  mmcblk0: unknown partition table
> [    1.297851]  mmcblk0boot1: unknown partition table
> [    1.304321]  mmcblk0boot0: unknown partition table
> [    1.471282] twl6040 1-004b: timeout waiting for READYINT
> ...
> [    1.603820] mmc1: host does not support reading read-only switch. assuming wr
> ite-enable.
> [    1.614105] mmc1: new high speed SD card at address 0002
> [    1.620086] mmcblk1: mmc1:0002 00000 971 MiB
> [    1.626129]  mmcblk1: p1 p2
> ...
> [    4.698455] VFS: Mounted root (ext3 filesystem) on device 179:34.
> ...
> [ 10.123077] mmcblk0rpmb: timed out sending r/w cmd command, card
> status 0x400900

Ah, I think you need this patch from mmc-next:

30bedc8b4c99b0da585a8e983d6346773cb50794
mmc: core: expose RPMB partition only for CMD23 capable hosts

It's already got a stable@ tag on it.  I'll be sending mmc-next to Linus
shortly and will make sure it gets into 3.8-stable; sorry it didn't make
it into 3.8-final.

- Chris.
-- 
Chris Ball   <cjb@xxxxxxxxxx>   <http://printf.net/>
One Laptop Per Child
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