staging: r8188eu: remove HW_VAR_FIFO_CLEARN_UP

Remove the HW_VAR_FIFO_CLEARN_UP case from SetHwReg8188EU() and move
its functionality to a new static function in os_intfs.c. This is part
of the ongoing effort to get rid of the unwanted hal layer.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220409120627.10633-4-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1116,32 +1116,6 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 			rtl8188e_set_FwPwrMode_cmd(Adapter, psmode);
 		}
 		break;
-	case HW_VAR_FIFO_CLEARN_UP:
-		{
-			struct pwrctrl_priv *pwrpriv = &Adapter->pwrctrlpriv;
-			u8 trycnt = 100;
-
-			/* pause tx */
-			rtw_write8(Adapter, REG_TXPAUSE, 0xff);
-
-			/* keep sn */
-			Adapter->xmitpriv.nqos_ssn = rtw_read16(Adapter, REG_NQOS_SEQ);
-
-			if (!pwrpriv->bkeepfwalive) {
-				/* RX DMA stop */
-				rtw_write32(Adapter, REG_RXPKT_NUM, (rtw_read32(Adapter, REG_RXPKT_NUM) | RW_RELEASE_EN));
-				do {
-					if (!(rtw_read32(Adapter, REG_RXPKT_NUM) & RXDMA_IDLE))
-						break;
-				} while (trycnt--);
-
-				/* RQPN Load 0 */
-				rtw_write16(Adapter, REG_RQPN_NPQ, 0x0);
-				rtw_write32(Adapter, REG_RQPN, 0x80000000);
-				mdelay(10);
-			}
-		}
-		break;
 	case HW_VAR_H2C_MEDIA_STATUS_RPT:
 		rtl8188e_set_FwMediaStatus_cmd(Adapter, (*(__le16 *)val));
 		break;

drivers/staging/r8188eu/include/hal_intf.h

@@ -21,7 +21,6 @@ enum hw_variables {
 	HW_VAR_AC_PARAM_BE,
 	HW_VAR_AMPDU_FACTOR,
 	HW_VAR_H2C_FW_PWRMODE,
-	HW_VAR_FIFO_CLEARN_UP,
 	HW_VAR_H2C_MEDIA_STATUS_RPT,
 };
 

drivers/staging/r8188eu/os_dep/os_intfs.c

@@ -736,9 +736,36 @@ void rtw_ips_pwr_down(struct adapter *padapter)
 	padapter->bCardDisableWOHSM = false;
 }
 
+static void rtw_fifo_cleanup(struct adapter *adapter)
+{
+	struct pwrctrl_priv *pwrpriv = &adapter->pwrctrlpriv;
+	u8 trycnt = 100;
+
+	/* pause tx */
+	rtw_write8(adapter, REG_TXPAUSE, 0xff);
+
+	/* keep sn */
+	adapter->xmitpriv.nqos_ssn = rtw_read16(adapter, REG_NQOS_SEQ);
+
+	if (!pwrpriv->bkeepfwalive) {
+		/* RX DMA stop */
+		rtw_write32(adapter, REG_RXPKT_NUM,
+			    (rtw_read32(adapter, REG_RXPKT_NUM) | RW_RELEASE_EN));
+		do {
+			if (!(rtw_read32(adapter, REG_RXPKT_NUM) & RXDMA_IDLE))
+				break;
+		} while (trycnt--);
+
+		/* RQPN Load 0 */
+		rtw_write16(adapter, REG_RQPN_NPQ, 0x0);
+		rtw_write32(adapter, REG_RQPN, 0x80000000);
+		mdelay(10);
+	}
+}
+
 void rtw_ips_dev_unload(struct adapter *padapter)
 {
-	SetHwReg8188EU(padapter, HW_VAR_FIFO_CLEARN_UP, NULL);
+	rtw_fifo_cleanup(padapter);
 
 	if (padapter->intf_stop)
 		padapter->intf_stop(padapter);