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Subject: media: ov5640: Fix a memory leak when ov5640_probe fails
Author: Xiaolei Wang <xiaolei.w...@windriver.com>
Date: Mon Aug 7 17:05:35 2023 +0800
sensor->ctrls.handler is initialized in ov5640_init_controls(),
so when the sensor is not connected and ov5640_sensor_resume()
fails, sensor->ctrls.handler should be released, otherwise a
memory leak will be detected:
unreferenced object 0xc674ca80 (size 64):
comm "swapper/0", pid 1, jiffies 4294938337 (age 204.880s)
hex dump (first 32 bytes):
80 55 75 c6 80 54 75 c6 00 55 75 c6 80 52 75 c6 .Uu..Tu..Uu..Ru.
00 53 75 c6 00 00 00 00 00 00 00 00 00 00 00 00 .Su..........
Fixes: 85644a9b37ec ("media: ov5640: Use runtime PM")
Signed-off-by: Xiaolei Wang <xiaolei.w...@windriver.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/i2c/ov5640.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 1c9cda1e7df5..40532f7bcabe 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3928,7 +3928,7 @@ static int ov5640_probe(struct i2c_client *client)
ret = ov5640_sensor_resume(dev);
if (ret) {
dev_err(dev, "failed to power on\n");
- goto entity_cleanup;
+ goto free_ctrls;
}
pm_runtime_set_active(dev);
@@ -3953,8 +3953,9 @@ static int ov5640_probe(struct i2c_client *client)
err_pm_runtime:
pm_runtime_put_noidle(dev);
pm_runtime_disable(dev);
- v4l2_ctrl_handler_free(&sensor->ctrls.handler);
ov5640_sensor_suspend(dev);
+free_ctrls:
+ v4l2_ctrl_handler_free(&sensor->ctrls.handler);
entity_cleanup:
media_entity_cleanup(&sensor->sd.entity);
mutex_destroy(&sensor->lock);
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