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

Kumar Gala galak at kernel.crashing.org
Tue Aug 21 11:22:35 EST 2012


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

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

Greg,

ping?

- k



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