staging: r8188eu: make numNQ a u8

The numNQ variable in _InitQueueReservedPage is defined as u32. It is
either set to 0 or to 0x1C. Change its type to u8 and remove the code that
casts the u32 value to u8.

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220808201405.68966-3-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -156,10 +156,9 @@ static void _InitQueueReservedPage(struct adapter *Adapter)
 	struct registry_priv	*pregistrypriv = &Adapter->registrypriv;
 	u32 numHQ	= 0;
 	u32 numLQ	= 0;
-	u32 numNQ	= 0;
+	u8 numNQ = 0;
 	u32 numPubQ;
 	u32 value32;
-	u8 value8;
 
 	if (pregistrypriv->wifi_spec) {
 		if (haldata->OutEpQueueSel & TX_SELE_HQ)
@@ -171,8 +170,8 @@ static void _InitQueueReservedPage(struct adapter *Adapter)
 		/*  NOTE: This step shall be proceed before writing REG_RQPN. */
 		if (haldata->OutEpQueueSel & TX_SELE_NQ)
 			numNQ = 0x1C;
-		value8 = (u8)_NPQ(numNQ);
-		rtw_write8(Adapter, REG_RQPN_NPQ, value8);
+
+		rtw_write8(Adapter, REG_RQPN_NPQ, numNQ);
 
 		numPubQ = 0xA8 - numHQ - numLQ - numNQ;
 

drivers/staging/r8188eu/include/rtl8188e_spec.h

@@ -928,8 +928,6 @@ Current IOREG MAP
 #define _HPQ(x)				((x) & 0xFF)
 #define _LPQ(x)				(((x) & 0xFF) << 8)
 #define _PUBQ(x)			(((x) & 0xFF) << 16)
-/*  NOTE: in RQPN_NPQ register */
-#define _NPQ(x)				((x) & 0xFF)
 
 #define HPQ_PUBLIC_DIS			BIT(24)
 #define LPQ_PUBLIC_DIS			BIT(25)