[PATCH] ep93xx: clear devcfg bits before setting them

[ryan@bluewatersys.com (Ryan Mallon)]

H Hartley Sweeten wrote:
> The ep93xx core helper function ep93xx_devcfg_set_clear should mask the
> clear_bits before setting the new set_bits in case the clear_bits are a
> mask value that also includes the set_bits.
> 
> Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
> Cc: Ryan Mallon <ryan@bluewatersys.com>

Acked-by: Ryan Mallon <ryan@bluewatersys.com>

> ---
> 
> diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
> index 9092677..92f2ebb 100644
> --- a/arch/arm/mach-ep93xx/core.c
> +++ b/arch/arm/mach-ep93xx/core.c
> @@ -215,8 +215,8 @@ void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits)
>  	spin_lock_irqsave(&syscon_swlock, flags);
>  
>  	val = __raw_readl(EP93XX_SYSCON_DEVCFG);
> -	val |= set_bits;
>  	val &= ~clear_bits;
> +	val |= set_bits;
>  	__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
>  	__raw_writel(val, EP93XX_SYSCON_DEVCFG);
>  


-- 
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