Hi Greg,

On Tue, 4 Dec 2012 10:22:06 -0500 (EST)
Alan Stern <st...@rowland.harvard.edu> wrote:

> On Tue, 4 Dec 2012, Anatolij Gustschin wrote:
> 
> > mpc5121e doesn't have system interface registers, accessing this
> > register address space cause the machine check exception and a
> > kernel crash:
> > 
> > ...
> > Machine check in kernel mode.
> > Caused by (from SRR1=49030): Transfer error ack signal
> > Oops: Machine check, sig: 7 [#1]
> > MPC5121 ADS
> > Modules linked in:
> > NIP: c025fd60 LR: c0265bb4 CTR: 00000000
> > REGS: df82dac0 TRAP: 0200   Not tainted
> > (3.7.0-rc7-00641-g81e6c91)
> > MSR: 00049030 <EE,ME,IR,DR>  CR: 42002024  XER: 20000000
> > TASK = df824b70[1] 'swapper' THREAD: df82c000
> > GPR00: 00000000 df82db70 df824b70 df3ed0f0 00000003 00000000 00000000 
> > 00000000
> > GPR08: 00000020 32000000 c03550ec 20000000 22002028 00000000 c0003f5c 
> > 00000000
> > GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 c0423898 
> > c0450000
> > GPR24: 00000077 00000002 e5086180 1c000c00 e5086000 df33ec00 00000003 
> > df34e000
> > NIP [c025fd60] ehci_fsl_setup_phy+0xd0/0x354
> > LR [c0265bb4] ehci_fsl_setup+0x220/0x284
> > ...
> > 
> > Fix it by checking 'have_sysif_regs' flag before register access.
> > 
> > Signed-off-by: Anatolij Gustschin <ag...@denx.de>
> 
> Acked-by: Alan Stern <st...@rowland.harvard.edu>

Ping.

Thanks,
Anatolij

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