[patch] scsi_transport_fc: remove unneeded check

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"val" can never be less than zero here.  It's unsigned and
simple_strtoul() always returns positive values.

I also cleaned up the check.  "*cp != '\0'" is more explicit than "*cp"
and I removed some parenthesis that weren't needed.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>

diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 0681378..b108a9b 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -844,7 +844,7 @@ store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr,
 	    (rport->port_state == FC_PORTSTATE_NOTPRESENT))
 		return -EBUSY;
 	val = simple_strtoul(buf, &cp, 0);
-	if ((*cp && (*cp != '\n')) || (val < 0))
+	if (*cp != '\0' && *cp != '\n')
 		return -EINVAL;
 
 	/*
--
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