Commit 392c5174 authored by Mans Rullgard's avatar Mans Rullgard Committed by Hans-Christian Egtvedt

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: default avatarMans Rullgard <mans@mansr.com>
Acked-by: default avatarHans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Tested-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: default avatarSudip Mukherjee <sudip.mukherjee@codethink.co.uk>
parent b837e97f
...@@ -57,7 +57,7 @@ static inline unsigned long __cmpxchg_u32(volatile int *m, unsigned long old, ...@@ -57,7 +57,7 @@ static inline unsigned long __cmpxchg_u32(volatile int *m, unsigned long old,
" brne 1b\n" " brne 1b\n"
"2:\n" "2:\n"
: [ret] "=&r"(ret), [m] "=m"(*m) : [ret] "=&r"(ret), [m] "=m"(*m)
: "m"(m), [old] "ir"(old), [new] "r"(new) : "m"(m), [old] "Ks21r"(old), [new] "r"(new)
: "memory", "cc"); : "memory", "cc");
return ret; return ret;
} }
......
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