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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2007-12-10 20:36:50 +0300
committerRalf Baechle <ralf@linux-mips.org>2007-12-14 17:34:29 +0000
commitb87bb40b62310328e908d580e013e0575b05886c (patch)
treeaa095d0a19180ff62a8cfa879e20c8cf5fe6f937 /arch/mips/au1000
parentdd99d9661c72fe251b842705f2e7cfaa4918a13c (diff)
[MIPS] Alchemy: fix off by two error in __fixup_bigphys_addr()
the PCI specific code in this function doesn't check for the address range being under the upper bound of the PCI memory window correctly -- fix this, somewhat beautifying the code around the check, while at it... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/au1000')
-rw-r--r--arch/mips/au1000/common/setup.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/mips/au1000/common/setup.c b/arch/mips/au1000/common/setup.c
index a90d425d4651..d885e3848ec6 100644
--- a/arch/mips/au1000/common/setup.c
+++ b/arch/mips/au1000/common/setup.c
@@ -137,12 +137,11 @@ phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
#ifdef CONFIG_PCI
{
- u32 start, end;
+ u32 start = (u32)Au1500_PCI_MEM_START;
+ u32 end = (u32)Au1500_PCI_MEM_END;
- start = (u32)Au1500_PCI_MEM_START;
- end = (u32)Au1500_PCI_MEM_END;
- /* check for pci memory window */
- if ((phys_addr >= start) && ((phys_addr + size) < end))
+ /* Check for PCI memory window */
+ if (phys_addr >= start && (phys_addr + size - 1) <= end)
return (phys_t)
((phys_addr - start) + Au1500_PCI_MEM_START);
}