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generic: make PFN_PHYS explicitly return phys_addr_t

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PFN_PHYS, as its name suggests, turns a pfn into a physical address.
However, it is a macro which just operates on its argument without
modifying its type.  pfns are typed unsigned long, but an unsigned
long may not be long enough to hold a physical address (32-bit systems
with more than 32 bits of physcial address).

Make sure we cast to phys_addr_t to return a complete result.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge
2008-09-11 01:31:48 -07:00
committed by Ingo Molnar
parent 600715dcdf
commit 947d0496cf
3 changed files with 9 additions and 5 deletions
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4
arch/m32r/mm/discontig.c
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@@ -111,9 +111,9 @@ unsigned long __init setup_memory(void)
initrd_start, INITRD_SIZE);
} else {
printk("initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
"(0x%08lx > 0x%08llx)\ndisabling initrd\n",
INITRD_START + INITRD_SIZE,
PFN_PHYS(max_low_pfn));
(unsigned long long)PFN_PHYS(max_low_pfn));
initrd_start = 0;
}