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>

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index b9bffad..15574cc 100644 (file)
--- 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);