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Message-ID: <20240129122829.16248-1-lujianhua000@gmail.com>
Date: Mon, 29 Jan 2024 20:28:29 +0800
From: Jianhua Lu <lujianhua000@...il.com>
To: Jianhua Lu <lujianhua000@...il.com>,
Lee Jones <lee@...nel.org>,
Daniel Thompson <daniel.thompson@...aro.org>,
Jingoo Han <jingoohan1@...il.com>,
Helge Deller <deller@....de>
Cc: dri-devel@...ts.freedesktop.org,
linux-fbdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] backlight: ktz8866: Correct the check for of_property_read_u32
of_property_read_u32 returns 0 when success, so reverse the
return value to get the true value.
Fixes: f8449c8f7355 ("backlight: ktz8866: Add support for Kinetic KTZ8866 backlight")
Signed-off-by: Jianhua Lu <lujianhua000@...il.com>
---
drivers/video/backlight/ktz8866.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/video/backlight/ktz8866.c b/drivers/video/backlight/ktz8866.c
index 9c980f2571ee..014877b5a984 100644
--- a/drivers/video/backlight/ktz8866.c
+++ b/drivers/video/backlight/ktz8866.c
@@ -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 {
--
2.43.0
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