From: Max Filippov <jcmvbkbc@gmail.com>
Date: Wed, 16 Oct 2019 04:51:43 +0000 (-0700)
Subject: xtensa: fix change_bit in exclusive access option
X-Git-Tag: v5.4-rc4~21^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=775fd6bfefc66a8c33e91dd9687ed530643b954d;p=linux-block.git

xtensa: fix change_bit in exclusive access option

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>
---

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");
 }