[PATCH] ia64: fix syscall_get_error()

Dmitry V. Levin
2018-12-03T03:17:25Z

According to documentation in include/asm-generic/syscall.h,
syscall_get_error() should return -ERRORCODE if the system call failed.

This change fixes syscall_get_error() implementation on ia64 to match
its own syscall_set_return_value(), the documentation, and other
architectures where syscall_get_error() returns a non-positive value.

Fixes: cfb361f13c81 ("[IA64] utrace syscall.h support for ia64")
Cc: stable@vger.kernel.org # v2.6.27+
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
arch/ia64/include/asm/syscall.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/ia64/include/asm/syscall.h b/arch/ia64/include/asm/syscall.h
index 1d0b875fec44..4ccf888c083d 100644
--- a/arch/ia64/include/asm/syscall.h
+++ b/arch/ia64/include/asm/syscall.h
@@ -35,7 +35,7 @@ static inline void syscall_rollback(struct task_struct *task,
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
- return regs->r10 = -1 ? regs->r8:0;
+ return regs->r10 = -1 ? -regs->r8 : 0;
}

static inline long syscall_get_return_value(struct task_struct *task,
--
ldv