# Re: \[PATCH 2/2\] powerpc/usb: fix bug of CPU hang when missing USB PHY clock

- From: Kumar Gala \<hidden\>
- Date: 2012-08-21 01:22:44 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2012/08/9470866
- Thread: https://ratatoskr.run/linuxppc-dev/2012/08/9470760/t.md

```text

On Aug 12, 2012, at 10:01 PM, Liu Shengzhou-B36685 wrote:

>=20
>=20
>> -----Original Message-----
>> From: Kumar Gala [mailto:<redacted>]
>> Sent: Friday, August 10, 2012 9:50 PM
>> To: Liu Shengzhou-B36685
>> Cc: <redacted> list; <redacted>;
>> gregkh@linuxfoundation.org
>> Subject: Re: [PATCH 2/2] powerpc/usb: fix bug of CPU hang when =
missing USB PHY
>> clock
>>=20
>>=20
>> On Aug 10, 2012, at 5:48 AM, Shengzhou Liu wrote:
>>=20
>>> 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.
>>>=20
>>> Signed-off-by: Shengzhou Liu <redacted>
>>> ---
>>> drivers/usb/host/ehci-fsl.c |   63 =
++++++++++++++++++++++++++++++-----------
>> -
>>> drivers/usb/host/ehci-fsl.h |    1 +
>>> 2 files changed, 46 insertions(+), 18 deletions(-)
>>=20
>> I assume this should be considered a bug fix and be looked at for =
inclusion in
>> v3.6?
>>=20
>> - k
> [Shengzhou] Yes.=20

Greg,

ping?

- k
```