[PATCH] ARM: SAMSUNG: Add check to ensure that clksrc_clk does have multiple clock sources

[ben-linux@fluff.org (Ben Dooks)]

On Mon, Jan 18, 2010 at 02:30:16PM +0900, Thomas Abraham wrote:
> Adds a additional check in s3c_set_clksrc function to ensure that the clksrc_clk
> does have a choice of multiple clock sources. In addition to this, a check is
> added to ensure that a parent is assigned to the clksrc_clk in case it does not
> have a choice of parent clocks.

Applied to next-samsung-clock2.
 
> Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
> ---
>  arch/arm/plat-samsung/clock-clksrc.c |   11 ++++++++---
>  1 files changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/plat-samsung/clock-clksrc.c b/arch/arm/plat-samsung/clock-clksrc.c
> index 33c633a..98c6b88 100644
> --- a/arch/arm/plat-samsung/clock-clksrc.c
> +++ b/arch/arm/plat-samsung/clock-clksrc.c
> @@ -129,11 +129,16 @@ void __init_or_cpufreq s3c_set_clksrc(struct clksrc_clk *clk, bool announce)
>  {
>  	struct clksrc_sources *srcs = clk->sources;
>  	u32 mask = bit_mask(clk->reg_src.shift, clk->reg_src.size);
> -	u32 clksrc = 0;
> +	u32 clksrc;
>  
> -	if (clk->reg_src.reg)
> -		clksrc = __raw_readl(clk->reg_src.reg);
> +	if (!clk->reg_src.reg) {
> +		if (!clk->clk.parent)
> +			printk(KERN_ERR "%s: no parent clock specified\n",
> +				clk->clk.name);
> +		return;
> +	}
>  
> +	clksrc = __raw_readl(clk->reg_src.reg);
>  	clksrc &= mask;
>  	clksrc >>= clk->reg_src.shift;
>  
> -- 
> 1.6.3.3
> 
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-- 
-- 
Ben

Q:      What's a light-year?
A:      One-third less calories than a regular year.