Staging: hv: mousevsc: Address some style issues

Deal with some style related issues. Also get rid of an unused macro.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/hv_mouse.c

@@ -115,7 +115,6 @@ struct synthhid_input_report {
 #define INPUTVSC_SEND_RING_BUFFER_SIZE		(10*PAGE_SIZE)
 #define INPUTVSC_RECV_RING_BUFFER_SIZE		(10*PAGE_SIZE)
 
-#define NBITS(x) (((x)/BITS_PER_LONG)+1)
 
 enum pipe_prot_msg_type {
 	PIPE_MESSAGE_INVALID,
@@ -146,6 +145,7 @@ struct  mousevsc_prt_msg {
 struct mousevsc_dev {
 	struct hv_device	*device;
 	bool			init_complete;
+	bool			connected;
 	struct mousevsc_prt_msg	protocol_req;
 	struct mousevsc_prt_msg	protocol_resp;
 	/* Synchronize the request/response if needed */
@@ -156,7 +156,6 @@ struct mousevsc_dev {
 	unsigned char		*report_desc;
 	u32			report_desc_size;
 	struct hv_input_dev_info hid_dev_info;
-	bool			connected;
 	struct hid_device       *hid_device;
 };
 
@@ -359,9 +358,9 @@ static void mousevsc_on_channel_callback(void *context)
 			bufferlen = bytes_recvd;
 			buffer = kmalloc(bytes_recvd, GFP_ATOMIC);
 
-			if (buffer == NULL) {
+			if (!buffer)
 				return;
-			}
+
 			break;
 		}
 	} while (1);
@@ -376,7 +375,6 @@ static int mousevsc_connect_to_vsp(struct hv_device *device)
 	struct mousevsc_prt_msg *request;
 	struct mousevsc_prt_msg *response;
 
-
 	request = &input_dev->protocol_req;
 
 	memset(request, 0, sizeof(struct mousevsc_prt_msg));
@@ -388,7 +386,6 @@ static int mousevsc_connect_to_vsp(struct hv_device *device)
 	request->request.header.size = sizeof(unsigned int);
 	request->request.version_requested.version = SYNTHHID_INPUT_VERSION;
 
-
 	ret = vmbus_sendpacket(device->channel, request,
 				sizeof(struct pipe_prt_msg) -
 				sizeof(unsigned char) +
@@ -396,11 +393,11 @@ static int mousevsc_connect_to_vsp(struct hv_device *device)
 				(unsigned long)request,
 				VM_PKT_DATA_INBAND,
 				VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
-	if (ret != 0)
+	if (ret)
 		goto cleanup;
 
 	t = wait_for_completion_timeout(&input_dev->wait_event, 5*HZ);
-	if (t == 0) {
+	if (!t) {
 		ret = -ETIMEDOUT;
 		goto cleanup;
 	}
@@ -415,7 +412,7 @@ static int mousevsc_connect_to_vsp(struct hv_device *device)
 	}
 
 	t = wait_for_completion_timeout(&input_dev->wait_event, 5*HZ);
-	if (t == 0) {
+	if (!t) {
 		ret = -ETIMEDOUT;
 		goto cleanup;
 	}
@@ -487,7 +484,6 @@ static int mousevsc_probe(struct hv_device *device,
 		return ret;
 	}
 
-
 	ret = mousevsc_connect_to_vsp(device);
 
 	if (ret != 0)