[media] gspca - sunplus: Fix some warnings and simplify code

This patch removes warnings due to GSPCA_DEBUG unsetting. It implied
a simplification of the code.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/sunplus.c

@@ -396,57 +396,6 @@ static void reg_w_riv(struct gspca_dev *gspca_dev,
 		req, index, value);
 }
 
-/* read 1 byte */
-static u8 reg_r_1(struct gspca_dev *gspca_dev,
-			u16 value)	/* wValue */
-{
-	int ret;
-
-	if (gspca_dev->usb_err < 0)
-		return 0;
-	ret = usb_control_msg(gspca_dev->dev,
-			usb_rcvctrlpipe(gspca_dev->dev, 0),
-			0x20,			/* request */
-			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			value,
-			0,			/* index */
-			gspca_dev->usb_buf, 1,
-			500);			/* timeout */
-	if (ret < 0) {
-		err("reg_r_1 err %d", ret);
-		gspca_dev->usb_err = ret;
-		return 0;
-	}
-	return gspca_dev->usb_buf[0];
-}
-
-/* read 1 or 2 bytes */
-static u16 reg_r_12(struct gspca_dev *gspca_dev,
-			u8 req,		/* bRequest */
-			u16 index,	/* wIndex */
-			u16 length)	/* wLength (1 or 2 only) */
-{
-	int ret;
-
-	if (gspca_dev->usb_err < 0)
-		return 0;
-	gspca_dev->usb_buf[1] = 0;
-	ret = usb_control_msg(gspca_dev->dev,
-			usb_rcvctrlpipe(gspca_dev->dev, 0),
-			req,
-			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			0,		/* value */
-			index,
-			gspca_dev->usb_buf, length,
-			500);
-	if (ret < 0) {
-		err("reg_r_12 err %d", ret);
-		gspca_dev->usb_err = ret;
-		return 0;
-	}
-	return (gspca_dev->usb_buf[1] << 8) + gspca_dev->usb_buf[0];
-}
-
 static void write_vector(struct gspca_dev *gspca_dev,
 			const struct cmd *data, int ncmds)
 {
@@ -473,44 +422,46 @@ static void setup_qtable(struct gspca_dev *gspca_dev,
 static void spca504_acknowledged_command(struct gspca_dev *gspca_dev,
 			     u8 req, u16 idx, u16 val)
 {
-	u16 notdone;
-
 	reg_w_riv(gspca_dev, req, idx, val);
-	notdone = reg_r_12(gspca_dev, 0x01, 0x0001, 1);
+	reg_r(gspca_dev, 0x01, 0x0001, 1);
+	PDEBUG(D_FRAM, "before wait 0x%04x", gspca_dev->usb_buf[0]);
 	reg_w_riv(gspca_dev, req, idx, val);
 
-	PDEBUG(D_FRAM, "before wait 0x%04x", notdone);
-
 	msleep(200);
-	notdone = reg_r_12(gspca_dev, 0x01, 0x0001, 1);
-	PDEBUG(D_FRAM, "after wait 0x%04x", notdone);
+	reg_r(gspca_dev, 0x01, 0x0001, 1);
+	PDEBUG(D_FRAM, "after wait 0x%04x", gspca_dev->usb_buf[0]);
 }
 
+#ifdef GSPCA_DEBUG
 static void spca504_read_info(struct gspca_dev *gspca_dev)
 {
 	int i;
 	u8 info[6];
 
-	for (i = 0; i < 6; i++)
-		info[i] = reg_r_1(gspca_dev, i);
+	for (i = 0; i < 6; i++) {
+		reg_r(gspca_dev, 0, i, 1);
+		info[i] = gspca_dev->usb_buf[0];
+	}
 	PDEBUG(D_STREAM,
 		"Read info: %d %d %d %d %d %d."
 		" Should be 1,0,2,2,0,0",
 		info[0], info[1], info[2],
 		info[3], info[4], info[5]);
 }
+#endif
 
 static void spca504A_acknowledged_command(struct gspca_dev *gspca_dev,
 			u8 req,
-			u16 idx, u16 val, u16 endcode, u8 count)
+			u16 idx, u16 val, u8 endcode, u8 count)
 {
 	u16 status;
 
 	reg_w_riv(gspca_dev, req, idx, val);
-	status = reg_r_12(gspca_dev, 0x01, 0x0001, 1);
+	reg_r(gspca_dev, 0x01, 0x0001, 1);
 	if (gspca_dev->usb_err < 0)
 		return;
-	PDEBUG(D_FRAM, "Status 0x%04x Need 0x%04x", status, endcode);
+	PDEBUG(D_FRAM, "Status 0x%02x Need 0x%02x",
+			gspca_dev->usb_buf[0], endcode);
 	if (!count)
 		return;
 	count = 200;
@@ -518,7 +469,8 @@ static void spca504A_acknowledged_command(struct gspca_dev *gspca_dev,
 		msleep(10);
 		/* gsmart mini2 write a each wait setting 1 ms is enough */
 /*		reg_w_riv(gspca_dev, req, idx, val); */
-		status = reg_r_12(gspca_dev, 0x01, 0x0001, 1);
+		reg_r(gspca_dev, 0x01, 0x0001, 1);
+		status = gspca_dev->usb_buf[0];
 		if (status == endcode) {
 			PDEBUG(D_FRAM, "status 0x%04x after wait %d",
 				status, 200 - count);
@@ -555,17 +507,19 @@ static void spca504B_WaitCmdStatus(struct gspca_dev *gspca_dev)
 	}
 }
 
+#ifdef GSPCA_DEBUG
 static void spca50x_GetFirmware(struct gspca_dev *gspca_dev)
 {
 	u8 *data;
 
 	data = gspca_dev->usb_buf;
 	reg_r(gspca_dev, 0x20, 0, 5);
-	PDEBUG(D_STREAM, "FirmWare : %d %d %d %d %d ",
+	PDEBUG(D_STREAM, "FirmWare: %d %d %d %d %d",
 		data[0], data[1], data[2], data[3], data[4]);
 	reg_r(gspca_dev, 0x23, 0, 64);
 	reg_r(gspca_dev, 0x23, 1, 64);
 }
+#endif
 
 static void spca504B_SetSizeType(struct gspca_dev *gspca_dev)
 {
@@ -578,7 +532,9 @@ static void spca504B_SetSizeType(struct gspca_dev *gspca_dev)
 		reg_w_riv(gspca_dev, 0x31, 0, 0);
 		spca504B_WaitCmdStatus(gspca_dev);
 		spca504B_PollingDataReady(gspca_dev);
+#ifdef GSPCA_DEBUG
 		spca50x_GetFirmware(gspca_dev);
+#endif
 		reg_w_1(gspca_dev, 0x24, 0, 8, 2);		/* type */
 		reg_r(gspca_dev, 0x24, 8, 1);
 
@@ -628,7 +584,8 @@ static void spca504_wait_status(struct gspca_dev *gspca_dev)
 	cnt = 256;
 	while (--cnt > 0) {
 		/* With this we get the status, when return 0 it's all ok */
-		if (reg_r_12(gspca_dev, 0x06, 0x00, 1) == 0)
+		reg_r(gspca_dev, 0x06, 0x00, 1);
+		if (gspca_dev->usb_buf[0] == 0)
 			return;
 		msleep(10);
 	}
@@ -772,10 +729,14 @@ static int sd_init(struct gspca_dev *gspca_dev)
 		/* fall thru */
 	case BRIDGE_SPCA533:
 		spca504B_PollingDataReady(gspca_dev);
+#ifdef GSPCA_DEBUG
 		spca50x_GetFirmware(gspca_dev);
+#endif
 		break;
 	case BRIDGE_SPCA536:
+#ifdef GSPCA_DEBUG
 		spca50x_GetFirmware(gspca_dev);
+#endif
 		reg_r(gspca_dev, 0x00, 0x5002, 1);
 		reg_w_1(gspca_dev, 0x24, 0, 0, 0);
 		reg_r(gspca_dev, 0x24, 0, 1);
@@ -801,7 +762,9 @@ static int sd_init(struct gspca_dev *gspca_dev)
 /*	case BRIDGE_SPCA504: */
 		PDEBUG(D_STREAM, "Opening SPCA504");
 		if (sd->subtype == AiptekMiniPenCam13) {
+#ifdef GSPCA_DEBUG
 			spca504_read_info(gspca_dev);
+#endif
 
 			/* Set AE AWB Banding Type 3-> 50Hz 2-> 60Hz */
 			spca504A_acknowledged_command(gspca_dev, 0x24,
@@ -873,7 +836,9 @@ static int sd_start(struct gspca_dev *gspca_dev)
 		break;
 	case BRIDGE_SPCA504:
 		if (sd->subtype == AiptekMiniPenCam13) {
+#ifdef GSPCA_DEBUG
 			spca504_read_info(gspca_dev);
+#endif
 
 			/* Set AE AWB Banding Type 3-> 50Hz 2-> 60Hz */
 			spca504A_acknowledged_command(gspca_dev, 0x24,
@@ -885,7 +850,9 @@ static int sd_start(struct gspca_dev *gspca_dev)
 							0, 0, 0x9d, 1);
 		} else {
 			spca504_acknowledged_command(gspca_dev, 0x24, 8, 3);
+#ifdef GSPCA_DEBUG
 			spca504_read_info(gspca_dev);
+#endif
 			spca504_acknowledged_command(gspca_dev, 0x24, 8, 3);
 			spca504_acknowledged_command(gspca_dev, 0x24, 0, 0);
 		}