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| author | Stafford Horne <shorne@gmail.com> | 2020-08-04 09:35:24 +0900 |
|---|---|---|
| committer | Stafford Horne <shorne@gmail.com> | 2020-08-09 07:57:05 +0900 |
| commit | af84b16e3423bd9c1c8d81c44bc0a217f763f6b7 (patch) | |
| tree | ca07d0bdbe1b6c8aaf2623fde21c718ae0c696e4 /arch/openrisc | |
| parent | 17fcd83c2b621333eb4b4874c54a30891735700f (diff) | |
| download | linux-next-af84b16e3423bd9c1c8d81c44bc0a217f763f6b7.tar.gz | |
openrisc: uaccess: Use static inline function in access_ok
As suggested by Linus when reviewing commit 9cb2feb4d21d
("arch/openrisc: Fix issues with access_ok()") last year; making
__range_ok an inline function also fixes the used twice issue that the
commit was fixing. I agree it's a good cleanup. This patch addresses
that as I am currently working on the access_ok macro to fixup sparse
annotations in OpenRISC.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Diffstat (limited to 'arch/openrisc')
| -rw-r--r-- | arch/openrisc/include/asm/uaccess.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index f2fc5c4b88c3..4b59dc9ad300 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -48,16 +48,19 @@ /* Ensure that the range from addr to addr+size is all within the process' * address space */ -#define __range_ok(addr, size) (size <= get_fs() && addr <= (get_fs()-size)) +static inline int __range_ok(unsigned long addr, unsigned long size) +{ + const mm_segment_t fs = get_fs(); + + return size <= fs && addr <= (fs - size); +} /* Ensure that addr is below task's addr_limit */ #define __addr_ok(addr) ((unsigned long) addr < get_fs()) #define access_ok(addr, size) \ ({ \ - unsigned long __ao_addr = (unsigned long)(addr); \ - unsigned long __ao_size = (unsigned long)(size); \ - __range_ok(__ao_addr, __ao_size); \ + __range_ok((unsigned long)(addr), (size)); \ }) /* |