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drm/nouveau: Don't disable polling in fallback mode

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When a fan is controlled via linear fallback without cstate, we
shouldn't stop polling.  Otherwise it won't be adjusted again and
keeps running at an initial crazy pace.

Fixes: 800efb4c28 ("drm/nouveau/drm/therm/fan: add a fallback if no fan control is specified in the vbios")
Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1103356
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107447
Reported-by: Thomas Blume <thomas.blume@suse.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Takashi Iwai 2018-09-12 12:58:43 +02:00 committed by Ben Skeggs
parent 15f77c4ade
commit 118780066e
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
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@ -132,11 +132,12 @@ nvkm_therm_update(struct nvkm_therm *therm, int mode)
duty = nvkm_therm_update_linear(therm);
break;
case NVBIOS_THERM_FAN_OTHER:
if (therm->cstate)
if (therm->cstate) {
duty = therm->cstate;
else
poll = false;
} else {
duty = nvkm_therm_update_linear_fallback(therm);
poll = false;
}
break;
}
immd = false;