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SubjectRe: arm qemu test failures due to 'driver-core: platform: probe of-devices only using list of compatibles'
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On 02/15/2016 02:59 AM, Uwe Kleine-König wrote:
> Hello Guenter,
>
> On Sun, Feb 14, 2016 at 08:50:10AM -0800, Guenter Roeck wrote:
>> Uwe,
>>
>> Your patch 'driver-core: platform: probe of-devices only using list of
>> compatibles' causes the following qemu tests to crash in -next.
>>
>> arm:vexpress-a9:vexpress_defconfig:vexpress-v2p-ca9
>> arm:vexpress-a15:vexpress_defconfig:vexpress-v2p-ca15-tc1
>> arm:vexpress-a9:multi_v7_defconfig:vexpress-v2p-ca9
>> arm:vexpress-a15:multi_v7_defconfig:vexpress-v2p-ca15-tc1
>>
>> Crash log:
>>
>> VFS: Cannot open root device "mmcblk0" or unknown-block(0,0): error -6
>> Please append a correct "root=" boot option; here are the available partitions:
>> 1f00 131072 mtdblock0 (driver?)
>> 1f01 32768 mtdblock1 (driver?)
>> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
>
> Can you provide a complete boot log? This might already reveal which
> device is failing. It might not be the mmci device but something it
> depends on (clock, bus parent, irq).
>

Sure, something else may be failing, but why does reverting your patch
fix the problem ?

Anyway, complete logs are at http://kerneltests.org/builders.

http://kerneltests.org/builders/qemu-arm-next/builds/376/steps/qemubuildcommand/logs/stdio

is the most recent log (next-20120215). Look for the vexpress crashes; the overo
crash bisected to to 'PM / OPP: Disable OPPs that aren't supported by the regulator',
in next-20160212, which I have not fully analyzed yet, and the beagle crashes
as well as the 'new' overo crash are brand new.

Guenter

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