Fix for fsl_upm

[Kumar Gala]

On Oct 27, 2011, at 9:18 AM, Rusev wrote:

> patch is vs. 2.6.39, yet it applied to 3.1
> 
> 
> 
> Fix of UPM driver for Freescale PowerPC processors
> 
> If Freescale LBC driver fails to initialise itself from device tree,
> then internal structure is freed only but not NULL-fied.
> As result functions fsl_lbc_find() after checking the structure is not NULL are
> trying to access device registers.
> 
> Signed-off-by: Alexandre Rusev <arusev at dev.rtsoft.ru> 
> --- linux-2.6.39.old/arch/powerpc/sysdev/fsl_lbc.c	2011-10-27 03:17:28.000000000 +0400
> +++ linux-2.6.39/arch/powerpc/sysdev/fsl_lbc.c	2011-10-27 05:06:44.000000000 +0400
> @@ -322,6 +322,7 @@ static int __devinit fsl_lbc_ctrl_probe(
> err:
> 	iounmap(fsl_lbc_ctrl_dev->regs);
> 	kfree(fsl_lbc_ctrl_dev);
> +	fsl_lbc_ctrl_dev = NULL;
> 	return ret;
> }
> 

Can you send this as a proper patch.

- k