dp83640: trivial fixes

This patch cleans up the input checking code on the external time stamp
function by using an unsigned rather than a signed channel index.

Also, this patch corrects the author's email address. When this macro
was last changed, the top level domain part of the email address was
left behind.
Signed-off-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/phy/dp83640.c

@@ -424,13 +424,13 @@ static int ptp_dp83640_enable(struct ptp_clock_info *ptp,
 	struct dp83640_clock *clock =
 		container_of(ptp, struct dp83640_clock, caps);
 	struct phy_device *phydev = clock->chosen->phydev;
-	int index;
+	unsigned int index;
 	u16 evnt, event_num, gpio_num;
 
 	switch (rq->type) {
 	case PTP_CLK_REQ_EXTTS:
 		index = rq->extts.index;
-		if (index < 0 || index >= N_EXT_TS)
+		if (index >= N_EXT_TS)
 			return -EINVAL;
 		event_num = EXT_EVENT + index;
 		evnt = EVNT_WR | (event_num & EVNT_SEL_MASK) << EVNT_SEL_SHIFT;
@@ -1363,7 +1363,7 @@ static void __exit dp83640_exit(void)
 }
 
 MODULE_DESCRIPTION("National Semiconductor DP83640 PHY driver");
-MODULE_AUTHOR("Richard Cochran <richardcochran@gmail.at>");
+MODULE_AUTHOR("Richard Cochran <richardcochran@gmail.com>");
 MODULE_LICENSE("GPL");
 
 module_init(dp83640_init);