diff options
| author | Greg Ungerer <gerg@snapgear.com> | 2007-07-19 01:49:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-19 10:04:51 -0700 |
| commit | 10146801e8b960d7473e350b60458d9d5a2be1cf (patch) | |
| tree | 98b42daabeda36e89202265dd2e83c9d4703602a /include/asm-m68knommu | |
| parent | a4c8b9159000018b0c641b844795a4de4e954582 (diff) | |
| download | lwn-10146801e8b960d7473e350b60458d9d5a2be1cf.tar.gz lwn-10146801e8b960d7473e350b60458d9d5a2be1cf.zip | |
m68knommu: remove is_in_rom() function
Remove is_in_rom() function. It doesn't actually serve the purpose it was
intended to. If you look at the use of it _access_ok() (which is the only use
of it) then it is obvious that most of memory is marked as access_ok. No
point having is_in_rom() then, so remove it.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-m68knommu')
| -rw-r--r-- | include/asm-m68knommu/pgtable.h | 1 | ||||
| -rw-r--r-- | include/asm-m68knommu/uaccess.h | 11 |
2 files changed, 7 insertions, 5 deletions
diff --git a/include/asm-m68knommu/pgtable.h b/include/asm-m68knommu/pgtable.h index 9dfbbc24aa71..e1e6a1d2333a 100644 --- a/include/asm-m68knommu/pgtable.h +++ b/include/asm-m68knommu/pgtable.h @@ -49,7 +49,6 @@ static inline int pte_file(pte_t pte) { return 0; } * These would be in other places but having them here reduces the diffs. */ extern unsigned int kobjsize(const void *objp); -extern int is_in_rom(unsigned long); /* * No page table caches to initialise. diff --git a/include/asm-m68knommu/uaccess.h b/include/asm-m68knommu/uaccess.h index 62b29b10bc6d..9ed9169a8849 100644 --- a/include/asm-m68knommu/uaccess.h +++ b/include/asm-m68knommu/uaccess.h @@ -15,12 +15,15 @@ #define access_ok(type,addr,size) _access_ok((unsigned long)(addr),(size)) +/* + * It is not enough to just have access_ok check for a real RAM address. + * This would disallow the case of code/ro-data running XIP in flash/rom. + * Ideally we would check the possible flash ranges too, but that is + * currently not so easy. + */ static inline int _access_ok(unsigned long addr, unsigned long size) { - extern unsigned long memory_start, memory_end; - - return (((addr >= memory_start) && (addr+size < memory_end)) || - (is_in_rom(addr) && is_in_rom(addr+size))); + return 1; } /* |