* [PATCH] xtensa: fix change_bit in exclusive access option
@ 2019-10-16 7:13 Max Filippov
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From: Max Filippov @ 2019-10-16 7:13 UTC (permalink / raw)
To: linux-xtensa; +Cc: Chris Zankel, Max Filippov, stable
change_bit implementation for XCHAL_HAVE_EXCLUSIVE case changes all bits
except the one required due to copy-paste error from clear_bit.
Cc: stable@vger.kernel.org # v5.2+
Fixes: f7c34874f04a ("xtensa: add exclusive atomics support")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
arch/xtensa/include/asm/bitops.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
index aeb15f4c755b..be8b2be5a98b 100644
--- a/arch/xtensa/include/asm/bitops.h
+++ b/arch/xtensa/include/asm/bitops.h
@@ -148,7 +148,7 @@ static inline void change_bit(unsigned int bit, volatile unsigned long *p)
" getex %0\n"
" beqz %0, 1b\n"
: "=&a" (tmp)
- : "a" (~mask), "a" (p)
+ : "a" (mask), "a" (p)
: "memory");
}
--
2.20.1
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2019-10-16 7:13 [PATCH] xtensa: fix change_bit in exclusive access option Max Filippov
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