linux-kernel - Re: [PATCH] nouveau reclocking on nv40 not working since 77145f1cbdf8d28b46ff8070ca749bad821e0774

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Date:	Thu, 15 Aug 2013 18:23:06 -0400
From:	Martin Peres <martin.peres@...ri.fr>
To:	Pali Rohár <pali.rohar@...il.com>
CC:	David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, Ben Skeggs <bskeggs@...hat.com>
Subject: Re: [PATCH] nouveau reclocking on nv40 not working since 77145f1cbdf8d28b46ff8070ca749bad821e0774

On 15/08/2013 13:46, Pali Rohár wrote:
> On Tuesday 13 August 2013 11:28:01 Pali Rohár wrote:
>> Hello,
>>
>> in commit 77145f1cbdf8d28b46ff8070ca749bad821e0774 was
>> introduced error which cause that on my Nvidia 6600GT card
>> reclocking not working anymore. There is missing assigment of
>> return value from pll_calc to ret.
>>
>> After this patch reclocking on my card working fine again.
>> Above broken commit was introduced in kernel 3.7, so consider
>> backporting this patch to older kernels too.
>>
>> Signed-off-by: Pali Rohár <pali.rohar@...il.com>
>>
>> diff --git a/drivers/gpu/drm/nouveau/nv40_pm.c
>> b/drivers/gpu/drm/nouveau/nv40_pm.c index 3af5bcd..625f80d
>> 100644
>> --- a/drivers/gpu/drm/nouveau/nv40_pm.c
>> +++ b/drivers/gpu/drm/nouveau/nv40_pm.c
>> @@ -131,7 +131,7 @@ nv40_calc_pll(struct drm_device *dev, u32
>> reg, struct nvbios_pll *pll, if (clk < pll->vco1.max_freq)
>>   		pll->vco2.max_freq = 0;
>>
>> -	pclk->pll_calc(pclk, pll, clk, &coef);
>> +	ret = pclk->pll_calc(pclk, pll, clk, &coef);
>>   	if (ret == 0)
>>   		return -ERANGE;
> Martin, can you look at another problem with my graphics card?
As I told you before, I'm away from my computers, so I cannot test the 
patch. However,
this one seems quite obvious and should be pushed. Thanks.
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