On Sep 21, 2012, at 11:43 AM, Greg KH wrote:
> On Tue, Sep 18, 2012 at 04:52:39PM +0800, Shengzhou Liu wrote:
>> when missing USB PHY clock, kernel booting up will hang during USB
>> initialization. We should check USBGP[PHY_CLK_VALID] bit to avoid
>> CPU hanging in this case.
>>
>> Signed-off-by: Shengzhou Liu <Shengzhou.Liu@xxxxxxxxxxxxx>
>> ---
>> v3 change: no check for UTMI PHY.
>> v2 change: use spin_event_timeout() instead.
>>
>> drivers/usb/host/ehci-fsl.c | 57 +++++++++++++++++++++++++++++-------------
>> drivers/usb/host/ehci-fsl.h | 1 +
>> include/linux/fsl_devices.h | 1 +
>> 3 files changed, 41 insertions(+), 18 deletions(-)
>
> This is already applied, right?
>
> greg k-h
It appears that v2 of the patch is applied to your usb-next branch.
in drivers/usb/host/ehci-fsl.c
V2:
@@ -262,23 +266,34 @@ static void ehci_fsl_setup_phy(struct usb_hcd *hcd,
case FSL_USB2_PHY_NONE:
break;
}
+
+ if ((pdata->controller_ver) && ((phy_mode == FSL_USB2_PHY_ULPI) ||
+ (phy_mode == FSL_USB2_PHY_UTMI))) {
V3:
@@ -262,23 +266,33 @@ static void ehci_fsl_setup_phy(struct usb_hcd *hcd,
case FSL_USB2_PHY_NONE:
break;
}
+
+ if (pdata->controller_ver && (phy_mode == FSL_USB2_PHY_ULPI)) {
+ /* check PHY_CLK_VALID to get phy clk valid */
- k--
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