From: Martin Peres <martin.peres@labri.fr>
To: kernel-janitors@vger.kernel.org
Subject: Re: ERROR: "__divdf3" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
Date: Thu, 27 Sep 2012 13:12:42 +0000 [thread overview]
Message-ID: <506450CA.8060707@labri.fr> (raw)
In-Reply-To: <20120927115903.GA17017@localhost>
[-- Attachment #1: Type: text/plain, Size: 1063 bytes --]
On 27/09/2012 13:59, Fengguang Wu wrote:
> Hi Martin,
>
> FYI, kernel build failed on
>
> 6310a32252e4160ce5492ad9b98c9f2778fec43b drm/nouveau/therm: calculate the pwm divisor on nv50+
> powerpc-allmodconfig
>
> All error/warnings:
>
> ERROR: "__divdf3" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
> ERROR: ".__floatsidf" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
> ERROR: "__fixdfsi" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
> ERROR: ".__divdf3" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
> ERROR: "__floatsidf" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
> ERROR: ".__fixdfsi" [drivers/gpu/drm/nouveau/nouveau.ko] undefined!
>
> ---
> 0-DAY kernel build testing backend Open Source Technology Centre
> Fengguang Wu, Yuanhan Liu Intel Corporation
Hi,
Thank you for reporting this issue (and for having such a nice tool). I
wonder how I could miss that!
Here is a patch for this that should fix the issue. It may be squashed
into the offending commit or added as is to the tree.
Cheers,
Martin
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[-- Type: text/x-patch, Size: 1062 bytes --]
From 9f574fc3872b35aaa4684fa492b9a47fc8f4653f Mon Sep 17 00:00:00 2001
From: Martin Peres <martin.peres@labri.fr>
Date: Thu, 27 Sep 2012 14:34:48 +0200
Subject: [PATCH] drm/nouveau/therm: fix an unintentional use of floating
point
Signed-off-by: Martin Peres <martin.peres@labri.fr>
---
drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c
index 6f97de2..9360ddd 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv50.c
@@ -92,7 +92,7 @@ nv50_fan_pwm_clock(struct nouveau_therm *therm)
if (nv_rd32(therm, 0xc040) & 0x800000) {
/* Use the HOST clock (100 MHz)
* Where does this constant(2.4) comes from? */
- pwm_clock = (100000000 >> pwm_div) / 2.4;
+ pwm_clock = (100000000 >> pwm_div) * 10 / 24;
} else {
/* Where does this constant(20) comes from? */
pwm_clock = (crystal * 1000) >> pwm_div;
--
1.7.11.5
next prev parent reply other threads:[~2012-09-27 13:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-27 11:59 ERROR: "__divdf3" [drivers/gpu/drm/nouveau/nouveau.ko] undefined! Fengguang Wu
2012-09-27 13:12 ` Martin Peres [this message]
2012-09-27 21:18 ` Ben Skeggs
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