diff options
| author | Marcin Slusarz | 2013-01-27 15:51:09 +0100 |
|---|---|---|
| committer | Ben Skeggs | 2013-02-20 16:00:36 +1000 |
| commit | fc3109a2cb294335bcf3c5db5e16ae5fe68849f2 (patch) | |
| tree | 0f0b7c5f6fa71cf8242d66f874b98bf6d8c1b44b | |
| parent | cd897837eacc6ce0b883b5e6c9000cb2e5f11c39 (diff) | |
drm/nouveau/fan: fix selection of fan speed when fan->get returns an error
fan->get returns int, but we write it to unsigned variable, and then check
whether it's >= 0 (it always is)
Found by smatch:
drivers/gpu/drm/nouveau/core/subdev/therm/fan.c:61 nouveau_fan_update() warn: always true condition '(duty >= 0) => (0-u32max >= 0)'
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/therm/fan.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c b/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c index b179655e639c..c728380d3d62 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c @@ -39,7 +39,7 @@ nouveau_fan_update(struct nouveau_fan *fan, bool immediate, int target) struct nouveau_timer *ptimer = nouveau_timer(priv); unsigned long flags; int ret = 0; - u32 duty; + int duty; /* update target fan speed, restricting to allowed range */ spin_lock_irqsave(&fan->lock, flags); @@ -64,9 +64,9 @@ nouveau_fan_update(struct nouveau_fan *fan, bool immediate, int target) * it is meant to bump the fan speed more incrementally */ if (duty < target) - duty = min(duty + 3, (u32) target); + duty = min(duty + 3, target); else if (duty > target) - duty = max(duty - 3, (u32) target); + duty = max(duty - 3, target); } else { duty = target; } |