[PATCH 2/2] ARM: imx: Add mx53 support to common msl functions.

Russell King - ARM Linux linux at arm.linux.org.uk
Tue Nov 2 18:21:11 EDT 2010

On Tue, Nov 02, 2010 at 05:17:07PM -0500, Dinh.Nguyen at freescale.com wrote:
>  static void query_silicon_parameter(void)
>  {
> -	void __iomem *rom = ioremap(MX51_IROM_BASE_ADDR, MX51_IROM_SIZE);
> +	void __iomem *rom;
>  	u32 rev;
> +	if (cpu_is_mx51())
> +		rom = ioremap(MX51_IROM_BASE_ADDR, MX51_IROM_SIZE);
> +	else if (cpu_is_mx53())
> +		rom = ioremap(MX53_IROM_BASE_ADDR, MX53_IROM_SIZE);

		rom is uninitialized;

I'd also suggest that the above set two variables - base and size, rather
than repeating the ioremap.  If you look at the generated code, I suspect
you'll find that the above generates two ioremap calls, whereas using
variables for base and size, and having a common ioremap will reduce the
code size.

More information about the linux-arm-kernel mailing list