powerpc/usb: fix bug of kernel hang when initializing usb
authorShengzhou Liu <Shengzhou.Liu@freescale.com>
Thu, 16 Feb 2012 10:02:20 +0000 (18:02 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 2 Apr 2012 16:52:10 +0000 (09:52 -0700)
commit 28c56ea1431421dec51b7b229369e991481453df upstream.

If USB UTMI PHY is not enable, writing to portsc register will lead to
kernel hang during boot up.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

No differences found