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-rw-r--r--include/linux/timex.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h
index 7e050a2..04a4a8c 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -282,6 +282,13 @@ static inline int ntp_synced(void)
return !(time_status & STA_UNSYNC);
}
+/* Required to safely shift negative values */
+#define shift_right(x, s) ({ \
+ __typeof__(x) __x = (x); \
+ __typeof__(s) __s = (s); \
+ __x < 0 ? -(-__x >> __s) : __x >> __s; \
+})
+
#ifdef CONFIG_TIME_INTERPOLATION
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