xtensa: fix change_bit in exclusive access option

commit 775fd6bfefc66a8c33e91dd9687ed530643b954d upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
index aeb15f4c755b379de5d0c0f62eba6eaab7d7229e..be8b2be5a98bd9b8972b88630d2ca978fe3130cc 100644 (file)
--- 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");
 }