[PATCH 5.4 20/80] xtensa: fix syscall_set_return_value

[Greg Kroah-Hartman]

From: Max Filippov <jcmvbkbc@xxxxxxxxx>

commit c2d9aa3b6e56de56c7f1ed9026ca6ec7cfbeef19 upstream.

syscall return value is in the register a2, not a0.

Cc: stable@xxxxxxxxxxxxxxx # v5.0+
Fixes: 9f24f3c1067c ("xtensa: implement tracehook functions and enable HAVE_ARCH_TRACEHOOK")
Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 arch/xtensa/include/asm/syscall.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/xtensa/include/asm/syscall.h
+++ b/arch/xtensa/include/asm/syscall.h
@@ -51,7 +51,7 @@ static inline void syscall_set_return_va
 					    struct pt_regs *regs,
 					    int error, long val)
 {
-	regs->areg[0] = (long) error ? error : val;
+	regs->areg[2] = (long) error ? error : val;
 }
 
 #define SYSCALL_MAX_ARGS 6