From: Max Filippov jcmvbkbc@gmail.com
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
--- arch/xtensa/include/asm/bitops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/xtensa/include/asm/bitops.h +++ b/arch/xtensa/include/asm/bitops.h @@ -148,7 +148,7 @@ static inline void change_bit(unsigned i " getex %0\n" " beqz %0, 1b\n" : "=&a" (tmp) - : "a" (~mask), "a" (p) + : "a" (mask), "a" (p) : "memory"); }