[PATCH v2] ARM: OMAP2: hwmod: Fix "register offset NULL check" bug

[Paul Walmsley]

On Tue, 18 Dec 2012, Hebbar Gururaja wrote:

> From: "Hebbar, Gururaja" <gururaja.hebbar at ti.com>
> 
> omap4_cminst_wait_module_ready() checks if register offset is NULL.
> 
> int omap4_cminst_wait_module_ready(u8 part, u16 inst, s16 cdoffs,
> 				   u16 clkctrl_offs)
> {
> 	int i = 0;
> 
> 	if (!clkctrl_offs)
> 		return 0;
> 
> In case of AM33xx, CLKCTRL register offset for different clock domains
> are not uniformly placed. An example of this would be the RTC clock
> domain with CLKCTRL offset at 0x00.
> In such cases the module ready check is skipped which leads to a data
> abort during boot-up when RTC registers is accessed.

We've got a few hwmods on OMAP44xx that don't have clkctrl_offs registers 
listed in the hwmod data, and which are not marked with HWMOD_NO_IDLEST.  
What's going to happen in those cases?


- Paul