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| author | Mans Rullgard <mans@mansr.com> | 2016-03-10 14:23:49 +0000 |
|---|---|---|
| committer | Hans-Christian Egtvedt <egtvedt@samfundet.no> | 2016-03-14 11:08:29 +0100 |
| commit | 392c5174499296bcdecbe1705d577883065fa5de (patch) | |
| tree | 2d649694002b4e9ba45d3a67393954d402636682 /arch/avr32 | |
| parent | b837e97fd35a6b551e3478ace0623a0bd744787c (diff) | |
| download | linux-392c5174499296bcdecbe1705d577883065fa5de.tar.gz linux-392c5174499296bcdecbe1705d577883065fa5de.tar.bz2 linux-392c5174499296bcdecbe1705d577883065fa5de.zip | |
avr32: fix asm operand constraint in cmpxchg()
If the 'old' operand to cmpxchg() is a constant wider than 21 bits,
linking fails with a "relocation truncated to fit: R_AVR32_21S" error.
Fix this by replacing the "i" constraint with "Ks21" which makes the
compiler use a temporary register for out of range constants.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Tested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Diffstat (limited to 'arch/avr32')
| -rw-r--r-- | arch/avr32/include/asm/cmpxchg.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/avr32/include/asm/cmpxchg.h b/arch/avr32/include/asm/cmpxchg.h index 366bbeaeb405..572739b4c4b4 100644 --- a/arch/avr32/include/asm/cmpxchg.h +++ b/arch/avr32/include/asm/cmpxchg.h @@ -57,7 +57,7 @@ static inline unsigned long __cmpxchg_u32(volatile int *m, unsigned long old, " brne 1b\n" "2:\n" : [ret] "=&r"(ret), [m] "=m"(*m) - : "m"(m), [old] "ir"(old), [new] "r"(new) + : "m"(m), [old] "Ks21r"(old), [new] "r"(new) : "memory", "cc"); return ret; } |