asgardius/android_kernel_motorola_sm6225
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

[ARM] Fix bounding error in ioremap_pfn()

Browse source 
If size=16M offset=2K then we should map two supersections
rather than just one.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-06-03 19:26:04 +01:00 committed by Russell King
parent 4486b86368
commit 6d78b5f9c6
1 changed files with 4 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
arch/arm/mm/ioremap.c
View file

@ -280,7 +280,10 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
if (!type)
return NULL;
size = PAGE_ALIGN(size);
/*
* Page align the mapping size, taking account of any offset.
*/
size = PAGE_ALIGN(offset + size);
area = get_vm_area(size, VM_IOREMAP);
if (!area)
@ -325,11 +328,6 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
if (!size || last_addr < phys_addr)
return NULL;
/*
* Page align the mapping size
*/
size = PAGE_ALIGN(last_addr + 1) - phys_addr;
return __arm_ioremap_pfn(pfn, offset, size, mtype);
}
EXPORT_SYMBOL(__arm_ioremap);