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leds: ti-lmu-common: Fix coccinelle issue in TI LMU

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Fix the coccinelle issues found in the TI LMU common code

drivers/leds/leds-ti-lmu-common.c:97:20-29: WARNING: Unsigned expression compared with zero: ramp_down < 0
drivers/leds/leds-ti-lmu-common.c:97:5-12: WARNING: Unsigned expression compared with zero: ramp_up < 0

Fixes: 3fce8e1eb9 ("leds: TI LMU: Add common code for TI LMU devices")
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
This commit is contained in:
Dan Murphy 2019-08-28 10:22:19 -05:00 committed by Jacek Anaszewski
parent 070a0eed75
commit 2637fd436c
1 changed files with 6 additions and 9 deletions
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15
drivers/leds/leds-ti-lmu-common.c
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@ -11,10 +11,10 @@
#include <linux/leds-ti-lmu-common.h>
const static int ramp_table[16] = {2048, 262000, 524000, 1049000, 2090000,
4194000, 8389000, 16780000, 33550000, 41940000,
50330000, 58720000, 67110000, 83880000,
100660000, 117440000};
const static unsigned int ramp_table[16] = {2048, 262000, 524000, 1049000,
2090000, 4194000, 8389000, 16780000, 33550000,
41940000, 50330000, 58720000, 67110000,
83880000, 100660000, 117440000};
static int ti_lmu_common_update_brightness(struct ti_lmu_bank *lmu_bank,
int brightness)
@ -54,7 +54,7 @@ int ti_lmu_common_set_brightness(struct ti_lmu_bank *lmu_bank, int brightness)
}
EXPORT_SYMBOL(ti_lmu_common_set_brightness);
static int ti_lmu_common_convert_ramp_to_index(unsigned int usec)
static unsigned int ti_lmu_common_convert_ramp_to_index(unsigned int usec)
{
int size = ARRAY_SIZE(ramp_table);
int i;
@ -78,7 +78,7 @@ static int ti_lmu_common_convert_ramp_to_index(unsigned int usec)
}
}
return -EINVAL;
return 0;
}
int ti_lmu_common_set_ramp(struct ti_lmu_bank *lmu_bank)
@ -94,9 +94,6 @@ int ti_lmu_common_set_ramp(struct ti_lmu_bank *lmu_bank)
ramp_down = ti_lmu_common_convert_ramp_to_index(lmu_bank->ramp_down_usec);
}
if (ramp_up < 0 || ramp_down < 0)
return -EINVAL;
ramp = (ramp_up << 4) | ramp_down;
return regmap_write(regmap, lmu_bank->runtime_ramp_reg, ramp);