staging: rtl8188eu: clean up usb_read8

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-5-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c b/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
index 205a15d..0172405 100644 (file)
--- a/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
@@ -296,14 +296,10 @@ exit:
 
 u8 usb_read8(struct adapter *adapter, u32 addr)
 {
-       u16 wvalue;
-       u16 len;
-       u8 data = 0;
-
-       wvalue = (u16)(addr & 0x0000ffff);
-       len = 1;
+       u16 wvalue = (u16)(addr & 0xffff);
+       u8 data;
 
-       usbctrl_vendorreq(adapter, wvalue, &data, len, REALTEK_USB_VENQT_READ);
+       usbctrl_vendorreq(adapter, wvalue, &data, 1, REALTEK_USB_VENQT_READ);
 
        return data;
 }