tree f5897da58ac89f7ef54b5e9deef8ed3d3f5bdd6b
parent 60cd5c1a0667294acac87728086f0b574f3ae5cc
author Al Viro <viro@zeniv.linux.org.uk> 1659971328 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1661418570 +0200

nios2: fix syscall restart checks

commit 2d631bd58fe0ea3e3350212e23c9aba1fb606514 upstream.

sys_foo() returns -512 (aka -ERESTARTSYS) => do_signal() sees
512 in r2 and 1 in r1.

sys_foo() returns 512 => do_signal() sees 512 in r2 and 0 in r1.

The former is restart-worthy; the latter obviously isn't.

Fixes: b53e906d255d ("nios2: Signal handling support")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>