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[media] V4L: soc-camera: split a function into two

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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: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski 2011-09-05 12:33:21 -03:00 committed by Mauro Carvalho Chehab
parent da83d9dc0a
commit 3dcc731a93
1 changed files with 34 additions and 31 deletions
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65
drivers/media/video/soc_camera.c
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@ -50,49 +50,52 @@ 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) {
dev_err(icd->pdev, "Cannot enable regulators\n");
return ret;
}
ret = regulator_bulk_enable(icl->num_regulators,
icl->regulators);
if (ret < 0) {
dev_err(icd->pdev, "Cannot enable regulators\n");
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)
ret = icl->power(icd->pdev, 0);
}
return ret;
}
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) {
dev_err(icd->pdev, "Cannot disable regulators\n");
return ret;
}
}
return 0;
ret = regulator_bulk_disable(icl->num_regulators,
icl->regulators);
if (ret < 0)
dev_err(icd->pdev, "Cannot disable regulators\n");
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: