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usb: chipidea: ci13xxx_imx: remove reg_vbus 

There is no need to keep a 'reg_vbus' indirection, so get rid of it.

The motivation for doing this change is that in the case of error, the current
code only sets the local reg_vbus to NULL instead of updating the private
structure 'data->reg_vbus'.

Updating only the local reg_vbus is wrong, since we currently check for
data->reg_vbus in the ci13xxx_imx_remove() function.

In order to avoid such issue, just use 'data->reg_vbus' directly.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabio Estevam 2013-06-13 17:59:49 +03:00 committed by Greg Kroah-Hartman
parent 770719df7b
commit e56ae54ff1
1 changed files with 6 additions and 8 deletions
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14
drivers/usb/chipidea/ci13xxx_imx.c
View File

@ -101,7 +101,6 @@ static int ci13xxx_imx_probe(struct platform_device *pdev)
struct platform_device *phy_pdev;
struct device_node *phy_np;
struct resource *res;
struct regulator *reg_vbus;
int ret;
if (of_find_property(pdev->dev.of_node, "fsl,usbmisc", NULL)
@ -150,18 +149,17 @@ static int ci13xxx_imx_probe(struct platform_device *pdev)
}
/* we only support host now, so enable vbus here */
reg_vbus = devm_regulator_get(&pdev->dev, "vbus");
if (!IS_ERR(reg_vbus)) {
ret = regulator_enable(reg_vbus);
data->reg_vbus = devm_regulator_get(&pdev->dev, "vbus");
if (!IS_ERR(data->reg_vbus)) {
ret = regulator_enable(data->reg_vbus);
if (ret) {
dev_err(&pdev->dev,
"Failed to enable vbus regulator, err=%d\n",
ret);
goto put_np;
}
data->reg_vbus = reg_vbus;
} else {
reg_vbus = NULL;
data->reg_vbus = NULL;
}
ci13xxx_imx_platdata.phy = data->phy;
@ -210,8 +208,8 @@ static int ci13xxx_imx_probe(struct platform_device *pdev)
disable_device:
ci13xxx_remove_device(data->ci_pdev);
err:
if (reg_vbus)
regulator_disable(reg_vbus);
if (data->reg_vbus)
regulator_disable(data->reg_vbus);
put_np:
if (phy_np)
of_node_put(phy_np);