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| author | Fabio Baltieri <fabio.baltieri@linaro.org> | 2013-04-03 16:02:26 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-04-03 18:44:38 +0300 |
| commit | 9ec602ecb199653a16e1eb909551b7ba77d79922 (patch) | |
| tree | 539ccc1297734c24dd9efef139944e6041987255 /drivers/usb/phy | |
| parent | 88b1c78db32782041d9548e3c4ab405f9e9eab59 (diff) | |
| download | linux-9ec602ecb199653a16e1eb909551b7ba77d79922.tar.gz linux-9ec602ecb199653a16e1eb909551b7ba77d79922.tar.bz2 linux-9ec602ecb199653a16e1eb909551b7ba77d79922.zip | |
usb: phy: twl4030-usb: check regulator_enable return value
Since regulator_enable() is going to be marked as __must_check in the
next merge window, always check regulator_enable() return value and
print a warning if it fails.
Reviewed-by: Kalle Jokiniemi <kalle.jokiniemi@jollamobile.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/phy')
| -rw-r--r-- | drivers/usb/phy/phy-twl4030-usb.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/usb/phy/phy-twl4030-usb.c b/drivers/usb/phy/phy-twl4030-usb.c index 3f9858fbebc2..13e17ae5ecd9 100644 --- a/drivers/usb/phy/phy-twl4030-usb.c +++ b/drivers/usb/phy/phy-twl4030-usb.c @@ -384,9 +384,17 @@ static void __twl4030_phy_power(struct twl4030_usb *twl, int on) static void twl4030_phy_power(struct twl4030_usb *twl, int on) { + int ret; + if (on) { - regulator_enable(twl->usb3v1); - regulator_enable(twl->usb1v8); + ret = regulator_enable(twl->usb3v1); + if (ret) + dev_err(twl->dev, "Failed to enable usb3v1\n"); + + ret = regulator_enable(twl->usb1v8); + if (ret) + dev_err(twl->dev, "Failed to enable usb1v8\n"); + /* * Disabling usb3v1 regulator (= writing 0 to VUSB3V1_DEV_GRP * in twl4030) resets the VUSB_DEDICATED2 register. This reset @@ -395,7 +403,11 @@ static void twl4030_phy_power(struct twl4030_usb *twl, int on) * is re-activated. This ensures that VUSB3V1 is really active. */ twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2); - regulator_enable(twl->usb1v5); + + ret = regulator_enable(twl->usb1v5); + if (ret) + dev_err(twl->dev, "Failed to enable usb1v5\n"); + __twl4030_phy_power(twl, 1); twl4030_usb_write(twl, PHY_CLK_CTRL, twl4030_usb_read(twl, PHY_CLK_CTRL) | |