From: Scott Wood <scottwood@freescale.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: Scott Wood <scottwood@freescale.com>, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc/mm: Use PFN_PHYS() in devmem_is_allowed()
Date: Fri, 17 Apr 2015 16:17:14 -0500 [thread overview]
Message-ID: <1429305434-4324-1-git-send-email-scottwood@freescale.com> (raw)
This function can run on systems where physical addresses don't
fit in unsigned long, so make sure to use the macro that contains the
proper cast.
Signed-off-by: Scott Wood <scottwood@freescale.com>
---
arch/powerpc/mm/mem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 7297d204..07052d9 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -563,7 +563,7 @@ subsys_initcall(add_system_ram_resources);
*/
int devmem_is_allowed(unsigned long pfn)
{
- if (iomem_is_exclusive(pfn << PAGE_SHIFT))
+ if (iomem_is_exclusive(PFN_PHYS(pfn)))
return 0;
if (!page_is_ram(pfn))
return 1;
--
2.1.0
reply other threads:[~2015-04-17 21:17 UTC|newest]
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