Re: arm qemu test failures due to 'driver-core: platform: probe of-devices only using list of compatibles'

From: Uwe Kleine-König
Date: Mon Feb 15 2016 - 05:59:22 EST


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).

Best regards
Uwe

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