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authorNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>2020-03-10 20:00:28 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-03-20 14:17:48 +0300
commit57ed737f1646579bf77070109c18ea78db690d18 (patch)
tree75be1c3b492bafab77c9c8bee6e65203ddd45bae /drivers/thermal/rcar_thermal.c
parent7617e771c16611b422c43b3b154dce2b3ee152d5 (diff)
downloadlinux-57ed737f1646579bf77070109c18ea78db690d18.tar.xz
thermal: rcar_thermal: Do not store ctemp in rcar_thermal_priv
There is no need to cache the ctemp value in the private data structure as it's always prefetched before it's used. Remove it from the structure and have rcar_thermal_update_temp return the value instead of storing it. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200310170029.1648996-3-niklas.soderlund+renesas@ragnatech.se
Diffstat (limited to 'drivers/thermal/rcar_thermal.c')
-rw-r--r--drivers/thermal/rcar_thermal.c26
1 files changed, 10 insertions, 16 deletions
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index fc54acdb914a..4a45b314ef30 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -95,7 +95,6 @@ struct rcar_thermal_priv {
struct mutex lock;
struct list_head list;
int id;
- u32 ctemp;
};
#define rcar_thermal_for_each_priv(pos, common) \
@@ -201,7 +200,6 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
struct device *dev = rcar_priv_to_dev(priv);
int i;
u32 ctemp, old, new;
- int ret = -EINVAL;
mutex_lock(&priv->lock);
@@ -247,32 +245,28 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
((ctemp - 1) << 0)));
}
- dev_dbg(dev, "thermal%d %d -> %d\n", priv->id, priv->ctemp, ctemp);
-
- priv->ctemp = ctemp;
- ret = 0;
err_out_unlock:
mutex_unlock(&priv->lock);
- return ret;
+
+ return ctemp ? ctemp : -EINVAL;
}
static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv,
int *temp)
{
- int tmp;
- int ret;
+ int ctemp, tmp;
- ret = rcar_thermal_update_temp(priv);
- if (ret < 0)
- return ret;
+ ctemp = rcar_thermal_update_temp(priv);
+ if (ctemp < 0)
+ return ctemp;
mutex_lock(&priv->lock);
if (priv->chip->ctemp_bands == 1)
- tmp = MCELSIUS((priv->ctemp * 5) - 65);
- else if (priv->ctemp < 24)
- tmp = MCELSIUS(((priv->ctemp * 55) - 720) / 10);
+ tmp = MCELSIUS((ctemp * 5) - 65);
+ else if (ctemp < 24)
+ tmp = MCELSIUS(((ctemp * 55) - 720) / 10);
else
- tmp = MCELSIUS((priv->ctemp * 5) - 60);
+ tmp = MCELSIUS((ctemp * 5) - 60);
mutex_unlock(&priv->lock);
/* Guaranteed operating range is -45C to 125C. */