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media: dvb_frontend: cleanup dvb_frontend_ioctl_properties()

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commit 2b5df42b8d upstream

Use a switch() on this function, just like on other ioctl
handlers and handle parameters inside each part of the
switch.

That makes it easier to integrate with the already existing
ioctl handler function.

Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mauro Carvalho Chehab
2020-06-05 09:25:07 -07:00
committed by Sasha Levin
parent 43619b3558
commit 785a948c03
1 changed files with 51 additions and 32 deletions
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83
drivers/media/dvb-core/dvb_frontend.c
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@@ -1956,21 +1956,25 @@ static int dvb_frontend_ioctl_properties(struct file *file,
struct dvb_frontend *fe = dvbdev->priv;
struct dvb_frontend_private *fepriv = fe->frontend_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int err = 0;
struct dtv_properties *tvps = parg;
struct dtv_property *tvp = NULL;
int i;
int err, i;
dev_dbg(fe->dvb->device, "%s:\n", __func__);
if (cmd == FE_SET_PROPERTY) {
dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
switch(cmd) {
case FE_SET_PROPERTY: {
struct dtv_properties *tvps = parg;
struct dtv_property *tvp = NULL;
/* Put an arbitrary limit on the number of messages that can
* be sent at once */
if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
dev_dbg(fe->dvb->device, "%s: properties.num = %d\n",
__func__, tvps->num);
dev_dbg(fe->dvb->device, "%s: properties.props = %p\n",
__func__, tvps->props);
/*
* Put an arbitrary limit on the number of messages that can
* be sent at once
*/
if (!tvps->num || (tvps->num > DTV_IOCTL_MAX_MSGS))
return -EINVAL;
tvp = memdup_user(tvps->props, tvps->num * sizeof(*tvp));
@@ -1979,23 +1983,34 @@ static int dvb_frontend_ioctl_properties(struct file *file,
for (i = 0; i < tvps->num; i++) {
err = dtv_property_process_set(fe, tvp + i, file);
if (err < 0)
goto out;
if (err < 0) {
kfree(tvp);
return err;
}
(tvp + i)->result = err;
}
if (c->state == DTV_TUNE)
dev_dbg(fe->dvb->device, "%s: Property cache is full, tuning\n", __func__);
} else if (cmd == FE_GET_PROPERTY) {
kfree(tvp);
break;
}
case FE_GET_PROPERTY: {
struct dtv_properties *tvps = parg;
struct dtv_property *tvp = NULL;
struct dtv_frontend_properties getp = fe->dtv_property_cache;
dev_dbg(fe->dvb->device, "%s: properties.num = %d\n", __func__, tvps->num);
dev_dbg(fe->dvb->device, "%s: properties.props = %p\n", __func__, tvps->props);
dev_dbg(fe->dvb->device, "%s: properties.num = %d\n",
__func__, tvps->num);
dev_dbg(fe->dvb->device, "%s: properties.props = %p\n",
__func__, tvps->props);
/* Put an arbitrary limit on the number of messages that can
* be sent at once */
if ((tvps->num == 0) || (tvps->num > DTV_IOCTL_MAX_MSGS))
/*
* Put an arbitrary limit on the number of messages that can
* be sent at once
*/
if (!tvps->num || (tvps->num > DTV_IOCTL_MAX_MSGS))
return -EINVAL;
tvp = memdup_user(tvps->props, tvps->num * sizeof(*tvp));
@@ -2010,28 +2025,32 @@ static int dvb_frontend_ioctl_properties(struct file *file,
*/
if (fepriv->state != FESTATE_IDLE) {
err = dtv_get_frontend(fe, &getp, NULL);
if (err < 0)
goto out;
if (err < 0) {
kfree(tvp);
return err;
}
}
for (i = 0; i < tvps->num; i++) {
err = dtv_property_process_get(fe, &getp, tvp + i, file);
if (err < 0)
goto out;
if (err < 0) {
kfree(tvp);
return err;
}
(tvp + i)->result = err;
}
if (copy_to_user((void __user *)tvps->props, tvp,
tvps->num * sizeof(struct dtv_property))) {
err = -EFAULT;
goto out;
kfree(tvp);
return -EFAULT;
}
} else
err = -EOPNOTSUPP;
out:
kfree(tvp);
return err;
kfree(tvp);
break;
}
default:
return -ENOTSUPP;
} /* switch */
return 0;
}
static int dtv_set_frontend(struct dvb_frontend *fe)