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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2014-07-31 19:11:02 +0200
committerEduardo Valentin <edubezval@gmail.com>2014-11-02 23:02:47 -0400
commit8131a246600f0c34a71cbe1a2e4a19af7e9bc887 (patch)
tree347d611550c25e66cbe85cf9f695e4de805ad81a /drivers/thermal
parent930aa102e2b0ba70ea420999362e2edc4fda15d3 (diff)
downloadop-kernel-dev-8131a246600f0c34a71cbe1a2e4a19af7e9bc887.zip
op-kernel-dev-8131a246600f0c34a71cbe1a2e4a19af7e9bc887.tar.gz
thermal: exynos: remove redundant threshold_code checks from exynos_tmu_initialize()
Remove runtime checks for negative return values of temp_to_code() from exynos_tmu_initialize(). The current level temperature data hardcoded in pdata will never cause a negative temp_to_code() return values and checking itself is not proper. The checks in question are done at runtime in a production code for data that is hardcoded inside driver during development time and later it doesn't change. Such data should be verified during development and review time (i.e. by a script parsing relevant data from exynos_tmu_data.c, one can also argue that verification to be done is so simple that the review by a maintainer should be enough). Theres should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal')
-rw-r--r--drivers/thermal/samsung/exynos_tmu.c16
1 files changed, 1 insertions, 15 deletions
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index b9bffad..15574cc 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -215,10 +215,6 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
if (data->soc == SOC_ARCH_EXYNOS4210) {
/* Write temperature code for threshold */
threshold_code = temp_to_code(data, pdata->threshold);
- if (threshold_code < 0) {
- ret = threshold_code;
- goto out;
- }
writeb(threshold_code,
data->base + reg->threshold_temp);
for (i = 0; i < trigger_levs; i++)
@@ -232,19 +228,13 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
i < trigger_levs && i < EXYNOS_MAX_TRIGGER_PER_REG; i++) {
threshold_code = temp_to_code(data,
pdata->trigger_levels[i]);
- if (threshold_code < 0) {
- ret = threshold_code;
- goto out;
- }
rising_threshold &= ~(0xff << 8 * i);
rising_threshold |= threshold_code << 8 * i;
if (pdata->threshold_falling) {
threshold_code = temp_to_code(data,
pdata->trigger_levels[i] -
pdata->threshold_falling);
- if (threshold_code > 0)
- falling_threshold |=
- threshold_code << 8 * i;
+ falling_threshold |= threshold_code << 8 * i;
}
}
@@ -263,10 +253,6 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
(pdata->trigger_type[i] == HW_TRIP)) {
threshold_code = temp_to_code(data,
pdata->trigger_levels[i]);
- if (threshold_code < 0) {
- ret = threshold_code;
- goto out;
- }
if (i == EXYNOS_MAX_TRIGGER_PER_REG - 1) {
/* 1-4 level to be assigned in th0 reg */
rising_threshold &= ~(0xff << 8 * i);
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