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

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On 16/08/2013 03:16, Pali Rohár wrote:
On Thursday 15 August 2013 18:23:06 Martin Peres wrote:
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@xxxxxxxxx>

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.
Yes, look at that diff of that problematic commit and you will see that ret
here is missing. It is possible to push this patch to 3.11?
Please make a proper patch (generated by git format-patch or git send-email) and
Ben will push it.

You add my Signed-off-by: Martin Peres <martin.peres@xxxxxxxx>

Cheers
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