[PATCH 2/3] msm: iommu: Generalize platform data for multiple targets

On Fri, 2011-02-11 at 12:51 -0800, Steve Muckle wrote:

On 02/11/11 12:42, Daniel Walker wrote:

quoted

quoted

 static struct resource msm_iommu_jpegd_resources[] = {
 	{
-		.start = MSM_IOMMU_JPEGD_PHYS,
-		.end   = MSM_IOMMU_JPEGD_PHYS + MSM_IOMMU_JPEGD_SIZE - 1,
+		.start = 0x07300000,
+		.end   = 0x07300000 + SZ_1M - 1,

Looks worse .. Just put the macros into a static header file for both.

Why bother defining macros for these if they only appear here? I don't
think that adds any value or readability - these addresses are clearly
the physical area for the msm_iommu_jpegd. It just makes it more
annoying to have to look up the values in a separate file if you are
wondering what they are.

So your saying if you look at the number 0x07300000 you instantly know
that this JPEGD? What if I pick a random other kernel developer do you
think they would instantly know that? I have no idea what 0x07300000 is.

Also if it's in a header you could ifdef them with out touching the C
file, which is just forward looking.

Daniel


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