x86, tracehook: clean up implementation of syscall_get_error()

The x86-tracehook code now contains this line in syscall_get_error():

	return error >= -4095L ? error : 0;

Hard-wiring a constant is not nice. Let's use the IS_ERR_VALUE macro
from linux/err.h instead.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Cc: utrace-devel@redhat.com
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-x86/syscall.h b/include/asm-x86/syscall.h
index 6f293892895a..04c47dc5597c 100644
--- a/include/asm-x86/syscall.h
+++ b/include/asm-x86/syscall.h
@@ -14,6 +14,7 @@
 #define _ASM_SYSCALL_H  1
 
 #include <linux/sched.h>
+#include <linux/err.h>
 
 static inline long syscall_get_nr(struct task_struct *task,
                                   struct pt_regs *regs)
@@ -47,7 +48,7 @@ static inline long syscall_get_error(struct task_struct *task,
                  */
                 error = (long) (int) error;
 #endif
-        return error >= -4095L ? error : 0;
+        return IS_ERR_VALUE(error) ? error : 0;
 }
 
 static inline long syscall_get_return_value(struct task_struct *task,