From: Mauro Carvalho Chehab <mchehab@kernel.org>
To: linuxtv-commits@linuxtv.org
Cc: stable@vger.kernel.org,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>
Subject: [git:media_stage/master] media: ov8865: Disable only enabled regulators on error path
Date: Thu, 16 Dec 2021 19:54:52 +0000 [thread overview]
Message-ID: <E1mxwvx-005tBR-8h@www.linuxtv.org> (raw)
This is an automatic generated email to let you know that the following patch were queued:
Subject: media: ov8865: Disable only enabled regulators on error path
Author: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Wed Dec 15 09:38:48 2021 +0100
If powering on the sensor failed, the entire power-off sequence was run
independently of how far the power-on sequence proceeded before the error.
This lead to disabling regulators and/or clock that was not enabled.
Fix this by disabling only clocks and regulators that were enabled
previously.
Fixes: 11c0d8fdccc5 ("media: i2c: Add support for the OV8865 image sensor")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
drivers/media/i2c/ov8865.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/drivers/media/i2c/ov8865.c b/drivers/media/i2c/ov8865.c
index ebdb20d3fe9d..d9d016cfa9ac 100644
--- a/drivers/media/i2c/ov8865.c
+++ b/drivers/media/i2c/ov8865.c
@@ -2407,27 +2407,27 @@ static int ov8865_sensor_power(struct ov8865_sensor *sensor, bool on)
if (ret) {
dev_err(sensor->dev,
"failed to enable DOVDD regulator\n");
- goto disable;
+ return ret;
}
ret = regulator_enable(sensor->avdd);
if (ret) {
dev_err(sensor->dev,
"failed to enable AVDD regulator\n");
- goto disable;
+ goto disable_dovdd;
}
ret = regulator_enable(sensor->dvdd);
if (ret) {
dev_err(sensor->dev,
"failed to enable DVDD regulator\n");
- goto disable;
+ goto disable_avdd;
}
ret = clk_prepare_enable(sensor->extclk);
if (ret) {
dev_err(sensor->dev, "failed to enable EXTCLK clock\n");
- goto disable;
+ goto disable_dvdd;
}
gpiod_set_value_cansleep(sensor->reset, 0);
@@ -2436,14 +2436,16 @@ static int ov8865_sensor_power(struct ov8865_sensor *sensor, bool on)
/* Time to enter streaming mode according to power timings. */
usleep_range(10000, 12000);
} else {
-disable:
gpiod_set_value_cansleep(sensor->powerdown, 1);
gpiod_set_value_cansleep(sensor->reset, 1);
clk_disable_unprepare(sensor->extclk);
+disable_dvdd:
regulator_disable(sensor->dvdd);
+disable_avdd:
regulator_disable(sensor->avdd);
+disable_dovdd:
regulator_disable(sensor->dovdd);
}
next reply other threads:[~2021-12-16 20:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-16 19:54 Mauro Carvalho Chehab [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-12-16 15:54 [git:media_stage/master] media: ov8865: Disable only enabled regulators on error path Mauro Carvalho Chehab
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