Re: Re: [PATCH 03/14] drm/atmel-hlcdc: Convert to Linux IRQ interfaces

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Hi Thomas,

On 7/28/21 11:17 AM, Thomas Zimmermann wrote:
> Hi
> 
> Am 28.07.21 um 20:11 schrieb Sam Ravnborg:
>> Hi Dan,
>>
>> thanks for the quick feedback!
>>
>> On Wed, Jul 28, 2021 at 05:50:34PM +0000, Dan.Sneddon@xxxxxxxxxxxxx 
>> wrote:
>>> On 7/28/21 8:44 AM, Sam Ravnborg wrote:
>>>> EXTERNAL EMAIL: Do not click links or open attachments unless you 
>>>> know the content is safe
>>>>
>>>> Hi Dan,
>>>>
>>>> On Wed, Jul 28, 2021 at 03:11:08PM +0000, Dan.Sneddon@xxxxxxxxxxxxx 
>>>> wrote:
>>>>> On 7/28/21 7:00 AM, Sam Ravnborg wrote:
>>>>>> [You don't often get email from sam@xxxxxxxxxxxx. Learn why this 
>>>>>> is important at http://aka.ms/LearnAboutSenderIdentification.]
>>>>>>
>>>>>> EXTERNAL EMAIL: Do not click links or open attachments unless you 
>>>>>> know the content is safe
>>>>>>
>>>>>> Hi Dan,
>>>>>>
>>>>>> I hope you can fine to test this patch from Thomas.
>>>>>> If this works then we can forget about my attempt to do the same.
>>>>>
>>>>> I'll test this as soon as I can and let you know.
>>>>
>>>> Thanks, crossing my fingers... (which explains the funny spelling from
>>>> time to time)
>>>>
>>>>           Sam
>>>> So I ran the test on an A5D27 XULT board with a PDA5 display.  Our
>>> graphics demos that come with our linux4sam releases seem to run just
>>> fine.  modetest -v seems to run just fine.  However, vbltest returns
>>> "drmWaitVBlank (relative) failed ret: -1".  I don't understand why
>>> modetest -v is working and vbltest isn't, but that's what I'm seeing.
> 
> Thanks for testing.
> 
>>
>> Strange indeed.
>>
>>
>> Just to be sure...
>> Can you confirm that vbltest is working OK *before* this patch?
> 
> Yes, can you please verify that it regressed. If so, this would mean 
> that the driver misses vblank interrupts with the patch applied.

Yes, unfortunately the vbltest works before this patch, but fails after 
this patch is applied.

Best Regards,
Dan

> 
> Best regards
> Thomas
> 
>>
>>     Sam
>>
> 





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