diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 538bf28..d7b2f68 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -97,7 +97,7 @@
 	field->index = report->maxfield++;
 	report->field[field->index] = field;
 	field->usage = (struct hid_usage *)(field + 1);
-	field->value = (unsigned *)(field->usage + usages);
+	field->value = (s32 *)(field->usage + usages);
 	field->report = report;
 
 	return field;
diff --git a/drivers/hid/hid-input-quirks.c b/drivers/hid/hid-input-quirks.c
index 845d31d..4c2052c 100644
--- a/drivers/hid/hid-input-quirks.c
+++ b/drivers/hid/hid-input-quirks.c
@@ -353,7 +353,7 @@
 
 	{ VENDOR_ID_SUNPLUS, DEVICE_ID_SUNPLUS_WDESKTOP, quirk_sunplus_wdesktop },
 
-	{ 0, 0, 0 }
+	{ 0, 0, NULL }
 };
 
 int hidinput_mapping_quirks(struct hid_usage *usage, 
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index b4ad5d1..120b49d 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -610,10 +610,11 @@
 /*
  * Traverse the supplied list of reports and find the longest
  */
-static void hid_find_max_report(struct hid_device *hid, unsigned int type, int *max)
+static void hid_find_max_report(struct hid_device *hid, unsigned int type,
+		unsigned int *max)
 {
 	struct hid_report *report;
-	int size;
+	unsigned int size;
 
 	list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
 		size = ((report->size - 1) >> 3) + 1;
@@ -705,9 +706,9 @@
 	struct hid_descriptor *hdesc;
 	struct hid_device *hid;
 	u32 quirks = 0;
-	unsigned rsize = 0;
+	unsigned int insize = 0, rsize = 0;
 	char *rdesc;
-	int n, len, insize = 0;
+	int n, len;
 	struct usbhid_device *usbhid;
 
 	quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),