Re: Need help debugging Sony Vaio VPCY2 backlight control problem

[Michel Alexandre Salim <salimma@fedoraproject.org>]

On 07/04/2011 01:31 PM, Michel Alexandre Salim wrote:
> Hi Rui,
> 
> They apply cleanly on top of 3.0-rc5, but I'm getting a
> warning-treated-as-failure. Which kernel tree am I supposed to be
> applying this to -- linus' 3.0-rc5, a post-rc5 commit, drm-intel-fixes
> or drm-intel-next?
> 
> Thanks -- Michel
> 
>   CC [M]  drivers/gpu/drm/i915/i915_drv.o
>   CC [M]  drivers/gpu/drm/i915/i915_dma.o
>   CC [M]  drivers/gpu/drm/i915/i915_irq.o
> drivers/gpu/drm/i915/i915_irq.c: In function ‘ivybridge_irq_handler’:
> drivers/gpu/drm/i915/i915_irq.c:505:3: error: implicit declaration of
> function ‘intel_opregion_gse_intr’ [-Werror=implicit-function-declaration]
> cc1: some warnings being treated as errors
> 
> make[4]: *** [drivers/gpu/drm/i915/i915_irq.o] Error 1
> make[3]: *** [drivers/gpu/drm/i915] Error 2
> make[2]: *** [drivers/gpu/drm] Error 2
> make[1]: *** [drivers/gpu] Error 2
> make: *** [drivers] Error 2
> 
And if I comment out those two lines, compile finishes but fails because
of undefined references -- seems like there's an Ivybridge-specific
references from another patch that I don't have.

Kernel: arch/x86/boot/bzImage is ready  (#3)
  Building modules, stage 2.
  MODPOST 2369 modules
ERROR: "igd_opregion_init" [drivers/gpu/drm/i915/i915.ko] undefined!
ERROR: "igd_opregion_intr" [drivers/gpu/drm/i915/i915.ko] undefined!
ERROR: "igd_opregion_enable_asle" [drivers/gpu/drm/i915/i915.ko] undefined!
ERROR: "igd_opregion_setup" [drivers/gpu/drm/i915/i915.ko] undefined!
ERROR: "igd_opregion_fini" [drivers/gpu/drm/i915/i915.ko] undefined!
WARNING: modpost: Found 3 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

> On 07/04/2011 10:57 AM, Zhang Rui wrote:
>> Hi, Michael,
>>
>> please check if the two patches attached help.
>>
>> thanks,
>> rui
>>
>> On Mon, 2011-07-04 at 16:48 +0800, Michel Alexandre Salim wrote:
>>> On 07/04/2011 10:46 AM, Michel Alexandre Salim wrote:
>>>> Here are the ectool dumps, before setting any brightness (backlight=0),
>>>> after setting it to 5, and after setting it to 3, plus the typescript
>>>> log of the commands issued and the sysfs readings.
>>>>
>>>> I then set brightness back to 0 (ec-after3.txt) -- didn't log the
>>>> keyboard interactions because it's the same (value for brightness
>>>> concurs with what is set, but actual_brightness is still -1)
>>>>
>>>> Let me know if you need anything else. Once we can at least pinpoint the
>>>> problem to the right subsystem, I'll add these attachments to the
>>>> correct bug report.
>>>>
>>>> Thanks,
>>>>
>>> And here's the last dump file, forgot to attach it earlier.
>>>
>>> Thanks,
>>>
> 
> 


-- 
Michel Alexandre Salim

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