3 files changed, 28 insertions, 2 deletions
diff --git a/lib/Makefile b/lib/Makefile
index e787f77be..760340fbd 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_BZIP2) += bzlib_randtable.o
 obj-$(CONFIG_BZIP2) += bzlib_huffman.o
 obj-$(CONFIG_USB_TTY) += circbuf.o
 obj-y += crc7.o
+obj-y += crc8.o
 obj-y += crc16.o
 obj-$(CONFIG_OF_CONTROL) += fdtdec.o
 obj-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o
diff --git a/lib/crc8.c b/lib/crc8.c
new file mode 100644
index 000000000..8b68a29e4
--- /dev/null
+++ b/lib/crc8.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include "linux/crc8.h"
+
+unsigned int crc8(const unsigned char *vptr, int len)
+{
+	const unsigned char *data = vptr;
+	unsigned int crc = 0;
+	int i, j;
+
+	for (j = len; j; j--, data++) {
+		crc ^= (*data << 8);
+		for (i = 8; i; i--) {
+			if (crc & 0x8000)
+				crc ^= (0x1070 << 3);
+			crc <<= 1;
+		}
+	}
+
+	return (crc >> 8) & 0xff;
+}
diff --git a/lib/time.c b/lib/time.c
index 09bb05a24..8085aa40d 100644
--- a/lib/time.c
+++ b/lib/time.c
@@ -71,8 +71,8 @@ unsigned long __weak notrace timer_get_us(void)
 }
 static unsigned long long usec_to_tick(unsigned long usec)
 {
-	uint64_t tick = usec * get_tbclk();
-	usec *= get_tbclk();
+	uint64_t tick = usec;
+	tick *= get_tbclk();
 	do_div(tick, 1000000);
 	return tick;
 }