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ARM: ux500: avoid warning in ux500_read_asicid

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phys_addr_t may be 64 bit, which causes this harmless warning
in ux500_read_asicid:

arch/arm/mach-ux500/id.c: In function 'ux500_read_asicid':
arch/arm/include/asm/io.h:159:19: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
 #define IOMEM(x) ((void __force __iomem *)(x))
                   ^
arch/arm/mach-ux500/id.c:40:9: note: in expansion of macro 'readl'
  return readl(IOMEM(UX500_VIRT_ROM + (addr & 0xfff)));

We can solve this in a nicer way by making UX500_VIRT_ROM have a proper
type to start with and calculating the address using pointer arithmetic.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Arnd Bergmann 2013-05-31 22:47:04 +02:00 committed by Linus Walleij
parent 19d3234124
commit 080e0435e5
2 changed files with 4 additions and 4 deletions
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2
arch/arm/mach-ux500/db8500-regs.h
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@ -183,7 +183,7 @@
#define U8500_IO_VIRTUAL 0xf0000000
#define U8500_IO_PHYSICAL 0xa0000000
/* This is where we map in the ROM to check ASIC IDs */
#define UX500_VIRT_ROM 0xf0000000
#define UX500_VIRT_ROM IOMEM(0xf0000000)
/* This macro is used in assembly, so no cast */
#define IO_ADDRESS(x) \

6
arch/arm/mach-ux500/id.c
View File

@ -21,11 +21,11 @@
struct dbx500_asic_id dbx500_id;
static unsigned int ux500_read_asicid(phys_addr_t addr)
static unsigned int __init ux500_read_asicid(phys_addr_t addr)
{
phys_addr_t base = addr & ~0xfff;
struct map_desc desc = {
.virtual = UX500_VIRT_ROM,
.virtual = (unsigned long)UX500_VIRT_ROM,
.pfn = __phys_to_pfn(base),
.length = SZ_16K,
.type = MT_DEVICE,
@ -37,7 +37,7 @@ static unsigned int ux500_read_asicid(phys_addr_t addr)
local_flush_tlb_all();
flush_cache_all();
return readl(IOMEM(UX500_VIRT_ROM + (addr & 0xfff)));
return readl(UX500_VIRT_ROM + (addr & 0xfff));
}
static void ux500_print_soc_info(unsigned int asicid)