diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-03-03 09:37:41 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:40:52 +0200 |
| commit | ba748d221eb74b849453a94fdf0e1d0566b407d7 (patch) | |
| tree | e84fe10f02e839ea55ebe71b7a29ca98eb7844f4 /arch | |
| parent | 320a6b2efceccb652befca0b1c9a92d6e4256ef6 (diff) | |
x86: warn about RAM pages in ioremap()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/ioremap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index e5608d38017..3d0a589d92c 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -149,9 +149,11 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size, for (pfn = phys_addr >> PAGE_SHIFT; (pfn << PAGE_SHIFT) < last_addr; pfn++) { - if (page_is_ram(pfn) && pfn_valid(pfn) && - !PageReserved(pfn_to_page(pfn))) + int is_ram = page_is_ram(pfn); + + if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) return NULL; + WARN_ON_ONCE(is_ram); } switch (mode) { |