| Message ID | 1319008732-8057-1-git-send-email-galak@kernel.crashing.org (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Delegated to: | Kumar Gala |
| Headers | show |
On Oct 19, 2011, at 2:18 AM, Kumar Gala wrote: > From: Hongjun Chen <Hong-jun.Chen@freescale.com> > > We need to ensure that MURAM is in a known and cleared out state before > using it as the bootloader could have utilized it from its own purposes > and left it in an unknown state. > > If we don't clear it out we've seen issues with UCC ethernet: > * Multi ethernet interfaces can't work simultanously. > * Multi up/down Ethernet interfaces will halt these ports. > * UCC1 RGMII can't work when kernel boots from some hosts. > > Signed-off-by: Kai.Jiang <Kai.Jiang@freescale.com> > Signed-off-by: Hongjun Chen <Hong-jun.Chen@freescale.com> > Signed-off-by: Kumar Gala <galak@kernel.crashing.org> > --- > arch/powerpc/sysdev/cpm_common.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) applied - k
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index d55d0ad..8db10bb 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -3,7 +3,7 @@ * * Author: Scott Wood <scottwood@freescale.com> * - * Copyright 2007 Freescale Semiconductor, Inc. + * Copyright 2007-2008,2010 Freescale Semiconductor, Inc. * * Some parts derived from commproc.c/cpm2_common.c, which is: * Copyright (c) 1997 Dan error_act (dmalek@jlc.net) @@ -146,6 +146,7 @@ unsigned long cpm_muram_alloc(unsigned long size, unsigned long align) spin_lock_irqsave(&cpm_muram_lock, flags); cpm_muram_info.alignment = align; start = rh_alloc(&cpm_muram_info, size, "commproc"); + memset(cpm_muram_addr(start), 0, size); spin_unlock_irqrestore(&cpm_muram_lock, flags); return start;