staging: rtl8723au: Make direct calls for HW_VAR_TXDMA_AGG_PG_TH

This was in fact turned into a no-op for the RTL8723AU, but it looks
like a bug, so this reenables it.

Keep an eye out for side-effects here and revert this, if it causes
issues.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_mlme.c

@@ -2193,13 +2193,10 @@ void rtw_joinbss_reset23a(struct rtw_adapter *padapter)
 			threshold = 1;
 		else
 			threshold = 0;
-		rtw_hal_set_hwreg23a(padapter, HW_VAR_RXDMA_AGG_PG_TH,
-				  (u8 *)(&threshold));
-	} else {
+	} else
 		threshold = 1;
-		rtw_hal_set_hwreg23a(padapter, HW_VAR_RXDMA_AGG_PG_TH,
-				  (u8 *)(&threshold));
-	}
+
+	rtl8723a_set_rxdma_agg_pg_th(padapter, threshold);
 }
 
 /* the fucntion is >= passive_level */

drivers/staging/rtl8723au/core/rtw_sreset.c

@@ -132,13 +132,13 @@ static void sreset_restore_network_station(struct rtw_adapter *padapter)
 			threshold = 1;
 		else
 			threshold = 0;
-		rtw_hal_set_hwreg23a(padapter, HW_VAR_RXDMA_AGG_PG_TH, (u8 *)(&threshold));
-	} else {
+	} else
 		threshold = 1;
-		rtw_hal_set_hwreg23a(padapter, HW_VAR_RXDMA_AGG_PG_TH, (u8 *)(&threshold));
-	}
 
-	set_channel_bwmode23a(padapter, pmlmeext->cur_channel, pmlmeext->cur_ch_offset, pmlmeext->cur_bwmode);
+	rtl8723a_set_rxdma_agg_pg_th(padapter, threshold);
+
+	set_channel_bwmode23a(padapter, pmlmeext->cur_channel,
+			      pmlmeext->cur_ch_offset, pmlmeext->cur_bwmode);
 
 	/* disable dynamic functions, such as high power, DIG */
 	/* Switch_DM_Func23a(padapter, DYNAMIC_FUNC_DISABLE, false); */

drivers/staging/rtl8723au/hal/rtl8723a_hal_init.c

@@ -3153,10 +3153,6 @@ void SetHwReg8723A(struct rtw_adapter *padapter, u8 variable, u8 *val)
 		rtl8723a_odm_support_ability_clr(padapter, *val32);
 		break;
 
-	case HW_VAR_RXDMA_AGG_PG_TH:
-		rtl8723a_set_rxdma_agg_pg_th(padapter, *val);
-		break;
-
 	case HW_VAR_H2C_FW_PWRMODE:
 		rtl8723a_set_FwPwrMode_cmd(padapter, *val);
 		break;

drivers/staging/rtl8723au/hal/usb_halinit.c

@@ -1519,8 +1519,6 @@ static void rtl8723au_trigger_gpio_0(struct rtw_adapter *padapter)
 static void SetHwReg8723AU(struct rtw_adapter *Adapter, u8 variable, u8 *val)
 {
 	switch (variable) {
-	case HW_VAR_RXDMA_AGG_PG_TH:
-		break;
 	case HW_VAR_SET_RPWM:
 		rtl8723a_set_rpwm(Adapter, *val);
 		break;

drivers/staging/rtl8723au/include/hal_intf.h

@@ -44,7 +44,6 @@ enum HW_VARIABLES {
 	HW_VAR_DM_FUNC_SET,
 	HW_VAR_DM_FUNC_CLR,
 	HW_VAR_CAM_READ,
-	HW_VAR_RXDMA_AGG_PG_TH,
 	HW_VAR_SET_RPWM,
 	HW_VAR_H2C_FW_PWRMODE,
 	HW_VAR_H2C_FW_JOINBSSRPT,