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media: atomisp: ov2680: Use devm_kzalloc() for sensor data struct

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Use devm_kzalloc() to allocate the sensor data struct. It is always free-ed
as the last step of probe-error-exit or remove, so it can be devm-managed.

This will make unwinding things easier when support is added to the ov2680
code to use standard GPIO APIs instead of the custom atomisp_gmin code.

This also allows dropping the out_free label and use direct return
on errors.

This may seem like a functional change since the out_free label also
did a v4l2_device_unregister_subdev() but at the 2 changed returns
the device is not registered yet, so that always is a no-op and can
be dropped.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans de Goede 2023-01-15 14:05:38 +01:00 committed by Mauro Carvalho Chehab
parent 66c7b303c7
commit e98b8993bf
1 changed files with 4 additions and 12 deletions
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16
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c
View file

@ -776,7 +776,6 @@ static void ov2680_remove(struct i2c_client *client)
media_entity_cleanup(&sensor->sd.entity);
v4l2_ctrl_handler_free(&sensor->ctrls.handler);
pm_runtime_disable(&client->dev);
kfree(sensor);
}
static int ov2680_probe(struct i2c_client *client)
@ -786,7 +785,7 @@ static int ov2680_probe(struct i2c_client *client)
int ret;
void *pdata;
sensor = kzalloc(sizeof(*sensor), GFP_KERNEL);
sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
if (!sensor)
return -ENOMEM;
@ -798,10 +797,8 @@ static int ov2680_probe(struct i2c_client *client)
pdata = gmin_camera_platform_data(&sensor->sd,
ATOMISP_INPUT_FORMAT_RAW_10,
atomisp_bayer_order_bggr);
if (!pdata) {
ret = -EINVAL;
goto out_free;
}
if (!pdata)
return -EINVAL;
pm_runtime_set_suspended(dev);
pm_runtime_enable(dev);
@ -810,7 +807,7 @@ static int ov2680_probe(struct i2c_client *client)
ret = ov2680_s_config(&sensor->sd, client->irq, pdata);
if (ret)
goto out_free;
return ret;
sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
@ -837,11 +834,6 @@ static int ov2680_probe(struct i2c_client *client)
}
return 0;
out_free:
dev_dbg(&client->dev, "+++ out free\n");
v4l2_device_unregister_subdev(&sensor->sd);
kfree(sensor);
return ret;
}
static int ov2680_suspend(struct device *dev)