Function twl4030_usb_remove can cause unbalanced regulator disables in twl4030_phy_power if the cable is not connected. Regulator enable/disable calls are in balance only if the twl4030_phy_resume was called prior the twl4030_usb_remove, that is, the cable was connected. Fix this by checking the 'asleep' variable in twl4030_usb_remove since that variable is used to check state in other functions. Signed-off-by: Jarkko Nikula <jhnikula@xxxxxxxxx> Cc: Felipe Balbi <balbi@xxxxxx> --- For 2.6.38 as not fatal issue. WARNING: at drivers/regulator/core.c:1365 _regulator_disable+0x34/0x114() unbalanced disables for VUSB1V5 ... --- drivers/usb/otg/twl4030-usb.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c index d335f48..6ca505f 100644 --- a/drivers/usb/otg/twl4030-usb.c +++ b/drivers/usb/otg/twl4030-usb.c @@ -678,7 +678,8 @@ static int __exit twl4030_usb_remove(struct platform_device *pdev) /* disable complete OTG block */ twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - twl4030_phy_power(twl, 0); + if (!twl->asleep) + twl4030_phy_power(twl, 0); regulator_put(twl->usb1v5); regulator_put(twl->usb1v8); regulator_put(twl->usb3v1); -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
