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SubjectRe: [PATCH, v2] ARM: omap2: gpmc: fix compilation warning
* Vincent Stehlé <vincent.stehle@laposte.net> [130514 10:26]:
> From: Vincent Stehlé <v-stehle@ti.com>
>
> Fix the following compilation warning:
>
> arch/arm/mach-omap2/gpmc.c: In function 'gpmc_probe_generic_child':
> arch/arm/mach-omap2/gpmc.c:1477:4: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'resource_size_t' [-Wformat]
>
> Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
> Cc: trivial@kernel.org
> ---
>
> Tony wrote:
> > You should just change the format for dev_err instead of the casting.
>
> Hi,
>
> Sorry for the late answer; it seems this is a bit more complicated after all,
> as res.start can be 32b or 64b in LPAE. The common solution seems to be: cast
> to long long in all cases and print accordingly. Would you like this better?

Oh OK. In this case the GPMC is always within the 32-bit address space.

But considering that similar issue will be there for other code with
LPAE, how about add something generic to arch/arm/include/asm/io.h like:

#define PHYS_ADDR32(x) ((__force u32)(x))
#define PHYS_ADDR64(x) ((__force u64)(x))

Or maybe something like that already exists.

Regards,

Tony

> arch/arm/mach-omap2/gpmc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
> index 6c4da12..e74501e 100644
> --- a/arch/arm/mach-omap2/gpmc.c
> +++ b/arch/arm/mach-omap2/gpmc.c
> @@ -1473,8 +1473,8 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
> */
> ret = gpmc_cs_remap(cs, res.start);
> if (ret < 0) {
> - dev_err(&pdev->dev, "cannot remap GPMC CS %d to 0x%x\n",
> - cs, res.start);
> + dev_err(&pdev->dev, "cannot remap GPMC CS %d to 0x%llx\n",
> + cs, (long long)res.start);
> goto err;
> }
>
> --
> 1.7.10.4
>
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