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

Alan Stern stern at rowland.harvard.edu
Wed Aug 22 00:33:55 EST 2012


On Mon, 20 Aug 2012, Kumar Gala wrote:

> >> 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?

Greg is away on vacation for the rest of this week.

Alan Stern



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