| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 055/125] usb: renesas_usbhs: fix usbhsc_resume() for !USBHSF_RUNTIME_PWCTRL | Date | Tue, 25 Jul 2017 12:19:30 -0700 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
commit 59a0879a0e17b2e43ecdc5e3299da85b8410d7ce upstream.
This patch fixes an issue that some registers may be not initialized after resume if the USBHSF_RUNTIME_PWCTRL is not set. Otherwise, if a cable is not connected, the driver will not enable INTENB0.VBSE after resume. And then, the driver cannot detect the VBUS.
Fixes: ca8a282a5373 ("usb: gadget: renesas_usbhs: add suspend/resume support") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/usb/renesas_usbhs/common.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -752,8 +752,10 @@ static int usbhsc_resume(struct device * struct usbhs_priv *priv = dev_get_drvdata(dev); struct platform_device *pdev = usbhs_priv_to_pdev(priv); - if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) + if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) { usbhsc_power_ctrl(priv, 1); + usbhs_mod_autonomy_mode(priv); + } usbhs_platform_call(priv, phy_reset, pdev);
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