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Commit 3dcc731a authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Mauro Carvalho Chehab
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[media] V4L: soc-camera: split a function into two 



The soc_camera_power_set() function processes two cases: power on anf off.
These two cases don't share and common code, and the function is always
called with a constant power on / off argument. Splitting this function
into two removes a condition check, reduces indentation levels and makes
the code look cleaner.

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent da83d9dc

drivers/media/video/soc_camera.c

+34 −31
Original line number Diff line number Diff line
@@ -50,13 +50,11 @@ static LIST_HEAD(hosts); 
static LIST_HEAD(devices);

static DEFINE_MUTEX(list_lock);		/* Protects the list of hosts */



static int soc_camera_power_set(struct soc_camera_device *icd,

				struct soc_camera_link *icl,

				int power_on)

static int soc_camera_power_on(struct soc_camera_device *icd,

			       struct soc_camera_link *icl)

{

	int ret;



	if (power_on) {

	ret = regulator_bulk_enable(icl->num_regulators,

				    icl->regulators);

	if (ret < 0) {
@@ -64,35 +62,40 @@ static int soc_camera_power_set(struct soc_camera_device *icd, 
		return ret;

	}



		if (icl->power)

			ret = icl->power(icd->pdev, power_on);

	if (icl->power) {

		ret = icl->power(icd->pdev, 1);

		if (ret < 0) {

			dev_err(icd->pdev,

				"Platform failed to power-on the camera.\n");



			regulator_bulk_disable(icl->num_regulators,

					       icl->regulators);

		}

	}



	return ret;

}

	} else {

		ret = 0;

		if (icl->power)



static int soc_camera_power_off(struct soc_camera_device *icd,

				struct soc_camera_link *icl)

{

	int ret;



	if (icl->power) {

		ret = icl->power(icd->pdev, 0);

		if (ret < 0) {

			dev_err(icd->pdev,

				"Platform failed to power-off the camera.\n");

			return ret;

		}

	}



	ret = regulator_bulk_disable(icl->num_regulators,

				     icl->regulators);

		if (ret < 0) {

	if (ret < 0)

		dev_err(icd->pdev, "Cannot disable regulators\n");

			return ret;

		}

	}



	return 0;

	return ret;

}



const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc(
@@ -502,7 +505,7 @@ static int soc_camera_open(struct file *file) 
			},

		};



		ret = soc_camera_power_set(icd, icl, 1);

		ret = soc_camera_power_on(icd, icl);

		if (ret < 0)

			goto epower;
@@ -556,7 +559,7 @@ esfmt: 
eresume:

	ici->ops->remove(icd);

eiciadd:

	soc_camera_power_set(icd, icl, 0);

	soc_camera_power_off(icd, icl);

epower:

	icd->use_count--;

	module_put(ici->ops->owner);
@@ -580,7 +583,7 @@ static int soc_camera_close(struct file *file) 
		if (ici->ops->init_videobuf2)

			vb2_queue_release(&icd->vb2_vidq);



		soc_camera_power_set(icd, icl, 0);

		soc_camera_power_off(icd, icl);

	}



	if (icd->streamer == file)
@@ -1026,7 +1029,7 @@ static int soc_camera_probe(struct soc_camera_device *icd) 
	if (ret < 0)

		goto ereg;



	ret = soc_camera_power_set(icd, icl, 1);

	ret = soc_camera_power_on(icd, icl);

	if (ret < 0)

		goto epower;
@@ -1106,7 +1109,7 @@ static int soc_camera_probe(struct soc_camera_device *icd) 


	ici->ops->remove(icd);



	soc_camera_power_set(icd, icl, 0);

	soc_camera_power_off(icd, icl);



	mutex_unlock(&icd->video_lock);
@@ -1129,7 +1132,7 @@ eadddev: 
evdc:

	ici->ops->remove(icd);

eadd:

	soc_camera_power_set(icd, icl, 0);

	soc_camera_power_off(icd, icl);

epower:

	regulator_bulk_free(icl->num_regulators, icl->regulators);

ereg: