Re: [PATCH] PNP: make the resource type an unsigned long
From: Rene Herman
Date: Sat Aug 09 2008 - 01:21:33 EST
On 08-08-08 23:55, H. Peter Anvin wrote:
Andrew earlier commented that pci_resourec_flags() returns an unsigned
long. Had this hanging around a local branch. Useful?
-int pnp_resource_type(struct resource *res)
+unsigned long pnp_resource_type(struct resource *res)
{
return res->flags & (IORESOURCE_IO | IORESOURCE_MEM |
IORESOURCE_IRQ | IORESOURCE_DMA);
}
Seems a bit pointless ... either one of those flags is >= 32 bits, in
which case we need u64, or it's not, in which case there is no reason to
burden the output with bits we don't need.
Yes, it's a not a functional patch -- only a type-consistency one. Right
now we're mixing ints (signed ones even) and unsigned longs and while in
this case that's not a functional problem it's messy and inconsistent.
I agree (as Andrew said earlier as well) that the struct resource flags
member should probably just be a u32 but it's not. Changing that would
be a bigger change than just a simple conistency thing.
Rene.
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