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authorDominik Sliwa <dominik.sliwa@toradex.com>2017-11-21 12:59:41 +0000
committerDominik Sliwa <dominik.sliwa@toradex.com>2017-12-22 09:40:23 +0000
commite34cb44ac7c08783b98a16eec70125e205e6eb12 (patch)
tree1101d23f1a73e5627ae187b07c7a0cf8826e10d1 /backport-include/linux/math64.h
initial commit
Generated againts 4.14 kernel source with git backports 1d8cc151d365582b42be00af776270b834a7a37d
Diffstat (limited to 'backport-include/linux/math64.h')
-rw-r--r--backport-include/linux/math64.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/backport-include/linux/math64.h b/backport-include/linux/math64.h
new file mode 100644
index 0000000..4aeb0df
--- /dev/null
+++ b/backport-include/linux/math64.h
@@ -0,0 +1,27 @@
+#ifndef __BACKPORT_LINUX_MATH64_H
+#define __BACKPORT_LINUX_MATH64_H
+#include_next <linux/math64.h>
+
+#if LINUX_VERSION_IS_LESS(3,12,0)
+
+#if BITS_PER_LONG == 64
+/**
+ * div64_u64_rem - unsigned 64bit divide with 64bit divisor and remainder
+ */
+#define div64_u64_rem LINUX_BACKPORT(div64_u64_rem)
+static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder)
+{
+ *remainder = dividend % divisor;
+ return dividend / divisor;
+}
+#elif BITS_PER_LONG == 32
+#ifndef div64_u64_rem
+#define div64_u64_rem LINUX_BACKPORT(div64_u64_rem)
+#define backports_div64_u64_rem_add 1
+extern u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder);
+#endif
+
+#endif /* BITS_PER_LONG */
+#endif /* < 3.12 */
+
+#endif /* __BACKPORT_LINUX_MATH64_H */