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backlight: ktz8866: Correct the check for of_property_read_u32 

[ Upstream commit f1ac3c9825 ]

of_property_read_u32 returns 0 when success, so reverse the
return value to get the true value.

Fixes: f8449c8f73 ("backlight: ktz8866: Add support for Kinetic KTZ8866 backlight")
Signed-off-by: Jianhua Lu <lujianhua000@gmail.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240129122829.16248-1-lujianhua000@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jianhua Lu 2024-01-29 20:28:29 +08:00 committed by Sasha Levin
parent 67e578c8ff
commit 3c138e9031
1 changed files with 3 additions and 3 deletions
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6
drivers/video/backlight/ktz8866.c
View File

@ -97,20 +97,20 @@ static void ktz8866_init(struct ktz8866 *ktz)
{
unsigned int val = 0;
if (of_property_read_u32(ktz->client->dev.of_node, "current-num-sinks", &val))
if (!of_property_read_u32(ktz->client->dev.of_node, "current-num-sinks", &val))
ktz8866_write(ktz, BL_EN, BIT(val) - 1);
else
/* Enable all 6 current sinks if the number of current sinks isn't specified. */
ktz8866_write(ktz, BL_EN, BIT(6) - 1);
if (of_property_read_u32(ktz->client->dev.of_node, "kinetic,current-ramp-delay-ms", &val)) {
if (!of_property_read_u32(ktz->client->dev.of_node, "kinetic,current-ramp-delay-ms", &val)) {
if (val <= 128)
ktz8866_write(ktz, BL_CFG2, BIT(7) | (ilog2(val) << 3) | PWM_HYST);
else
ktz8866_write(ktz, BL_CFG2, BIT(7) | ((5 + val / 64) << 3) | PWM_HYST);
}
if (of_property_read_u32(ktz->client->dev.of_node, "kinetic,led-enable-ramp-delay-ms", &val)) {
if (!of_property_read_u32(ktz->client->dev.of_node, "kinetic,led-enable-ramp-delay-ms", &val)) {
if (val == 0)
ktz8866_write(ktz, BL_DIMMING, 0);
else {