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From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH] powerpc: make U4 PCIe work (#2)
Date: Fri, 6 Oct 2006 13:26:25 +0200
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>,
	Paul Mackerras <paulus@samba.org>
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> +static unsigned int u4_pcie_cfa0(u8 devfn, u8 off)

"off" should be bigger than u8...

> +{
> +	return (1 << ((unsigned int)PCI_SLOT(devfn))) 	|
> +		(((unsigned int)PCI_FUNC(devfn)) << 8) |
> +		((((unsigned int)(off)) >> 8) << 28) 	|

...and the compiler told you about that here.

Make the parameters and return value all u32 and you won't
need casts anymore, the function call will implicitly do it.


Segher