staging: rtl8188eu: use actual request type as parameter

At the moment, usbctrl_vendorreq's requesttype parameter must be set to
1 for reading and 0 for writing. It's then converted to the actual
bmRequestType for the USB control request. We can simplify the code and
avoid this conversion if the caller passes the actual bmRequestType.

This patch is an adaptation of commit 788fde031027 ("staging: rtl8188eu:
use actual request type as parameter") for the new r8188eu driver.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210821164859.4351-3-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 12 insertions, 34 deletions

diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index a11a0597e515..dccb9fd34777 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -15,7 +15,6 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata,
 	struct usb_device *udev = dvobjpriv->pusbdev;
 	unsigned int pipe;
 	int status = 0;
-	u8 reqtype;
 	u8 *pIo_buf;
 	int vendorreq_times = 0;
 
@@ -44,26 +43,24 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata,
 	while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
 		memset(pIo_buf, 0, len);
 
-		if (requesttype == 0x01) {
+		if (requesttype == REALTEK_USB_VENQT_READ) {
 			pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
-			reqtype =  REALTEK_USB_VENQT_READ;
 		} else {
 			pipe = usb_sndctrlpipe(udev, 0);/* write_out */
-			reqtype =  REALTEK_USB_VENQT_WRITE;
 			memcpy(pIo_buf, pdata, len);
 		}
 
 		status = usb_control_msg(udev, pipe, REALTEK_USB_VENQT_CMD_REQ,
-					 reqtype, value, REALTEK_USB_VENQT_CMD_IDX,
+					 requesttype, value, REALTEK_USB_VENQT_CMD_IDX,
 					 pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 
 		if (status == len) {   /*  Success this control transfer. */
 			rtw_reset_continual_urb_error(dvobjpriv);
-			if (requesttype == 0x01)
+			if (requesttype == REALTEK_USB_VENQT_READ)
 				memcpy(pdata, pIo_buf,  len);
 		} else { /*  error cases */
 			DBG_88E("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n",
-				value, (requesttype == 0x01) ? "read" : "write",
+				value, (requesttype == REALTEK_USB_VENQT_READ) ? "read" : "write",
 				len, status, *(u32 *)pdata, vendorreq_times);
 
 			if (status < 0) {
@@ -75,7 +72,7 @@ static int usbctrl_vendorreq(struct intf_hdl *pintfhdl, u16 value, void *pdata,
 				}
 			} else { /*  status != len && status >= 0 */
 				if (status > 0) {
-					if (requesttype == 0x01) {
+					if (requesttype == REALTEK_USB_VENQT_READ) {
 						/*  For Control read transfer, we have to copy the read data from pIo_buf to pdata. */
 						memcpy(pdata, pIo_buf,  len);
 					}
@@ -101,19 +98,16 @@ exit:
 
 static u8 usb_read8(struct intf_hdl *pintfhdl, u32 addr)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	u8 data = 0;
 
 
 
-	requesttype = 0x01;/* read_in */
-
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = 1;
 
-	usbctrl_vendorreq(pintfhdl, wvalue, &data, len, requesttype);
+	usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_READ);
 
 
 
@@ -123,57 +117,49 @@ static u8 usb_read8(struct intf_hdl *pintfhdl, u32 addr)
 
 static u16 usb_read16(struct intf_hdl *pintfhdl, u32 addr)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	__le32 data;
 
-	requesttype = 0x01;/* read_in */
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = 2;
-	usbctrl_vendorreq(pintfhdl, wvalue, &data, len, requesttype);
+	usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_READ);
 
 	return (u16)(le32_to_cpu(data) & 0xffff);
 }
 
 static u32 usb_read32(struct intf_hdl *pintfhdl, u32 addr)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	__le32 data;
 
-	requesttype = 0x01;/* read_in */
-
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = 4;
 
-	usbctrl_vendorreq(pintfhdl, wvalue, &data, len, requesttype);
+	usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_READ);
 
 	return le32_to_cpu(data);
 }
 
 static int usb_write8(struct intf_hdl *pintfhdl, u32 addr, u8 val)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	u8 data;
 	int ret;
 
 
-	requesttype = 0x00;/* write_out */
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = 1;
 	data = val;
-	ret = usbctrl_vendorreq(pintfhdl, wvalue, &data, len, requesttype);
+	ret = usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_WRITE);
 
 	return ret;
 }
 
 static int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	__le32 data;
@@ -181,14 +167,12 @@ static int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val)
 
 
 
-	requesttype = 0x00;/* write_out */
-
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = 2;
 
 	data = cpu_to_le32(val & 0x0000ffff);
 
-	ret = usbctrl_vendorreq(pintfhdl, wvalue, &data, len, requesttype);
+	ret = usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_WRITE);
 
 
 
@@ -197,7 +181,6 @@ static int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val)
 
 static int usb_write32(struct intf_hdl *pintfhdl, u32 addr, u32 val)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	__le32 data;
@@ -205,13 +188,11 @@ static int usb_write32(struct intf_hdl *pintfhdl, u32 addr, u32 val)
 
 
 
-	requesttype = 0x00;/* write_out */
-
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = 4;
 	data = cpu_to_le32(val);
 
-	ret = usbctrl_vendorreq(pintfhdl, wvalue, &data, len, requesttype);
+	ret = usbctrl_vendorreq(pintfhdl, wvalue, &data, len, REALTEK_USB_VENQT_WRITE);
 
 
 
@@ -220,7 +201,6 @@ static int usb_write32(struct intf_hdl *pintfhdl, u32 addr, u32 val)
 
 static int usb_writeN(struct intf_hdl *pintfhdl, u32 addr, u32 length, u8 *pdata)
 {
-	u8 requesttype;
 	u16 wvalue;
 	u16 len;
 	u8 buf[VENDOR_CMD_MAX_DATA_LEN] = {0};
@@ -228,13 +208,11 @@ static int usb_writeN(struct intf_hdl *pintfhdl, u32 addr, u32 length, u8 *pdata
 
 
 
-	requesttype = 0x00;/* write_out */
-
 	wvalue = (u16)(addr & 0x0000ffff);
 	len = length;
 	memcpy(buf, pdata, len);
 
-	ret = usbctrl_vendorreq(pintfhdl, wvalue, buf, len, requesttype);
+	ret = usbctrl_vendorreq(pintfhdl, wvalue, buf, len, REALTEK_USB_VENQT_WRITE);
 
 	return ret;
 }