staging: r8188eu: remove HW_VAR_AMPDU_FACTOR from SetHwReg8188EU()

Remove the case HW_VAR_AMPDU_FACTOR from SetHwReg8188EU() and move
the functionality to a static function in rtw_wlan_util.c. This is
part of the ongoing effort to get rid of SetHwReg8188EU().

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220701210753.8210-1-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_wlan_util.c

@@ -805,6 +805,32 @@ static void set_min_ampdu_spacing(struct adapter *adapter, u8 spacing)
 	}
 }
 
+static void set_ampdu_factor(struct adapter *adapter, u8 factor)
+{
+	u8 RegToSet_Normal[4] = {0x41, 0xa8, 0x72, 0xb9};
+	u8 FactorToSet;
+	u8 *pRegToSet;
+	u8 index = 0;
+
+	pRegToSet = RegToSet_Normal; /*  0xb972a841; */
+	FactorToSet = factor;
+	if (FactorToSet <= 3) {
+		FactorToSet = (1 << (FactorToSet + 2));
+		if (FactorToSet > 0xf)
+			FactorToSet = 0xf;
+
+		for (index = 0; index < 4; index++) {
+			if ((pRegToSet[index] & 0xf0) > (FactorToSet << 4))
+				pRegToSet[index] = (pRegToSet[index] & 0x0f) | (FactorToSet << 4);
+
+			if ((pRegToSet[index] & 0x0f) > FactorToSet)
+				pRegToSet[index] = (pRegToSet[index] & 0xf0) | (FactorToSet);
+
+			rtw_write8(adapter, (REG_AGGLEN_LMT + index), pRegToSet[index]);
+		}
+	}
+}
+
 void HTOnAssocRsp(struct adapter *padapter)
 {
 	unsigned char		max_AMPDU_len;
@@ -831,7 +857,7 @@ void HTOnAssocRsp(struct adapter *padapter)
 
 	set_min_ampdu_spacing(padapter, min_MPDU_spacing);
 
-	SetHwReg8188EU(padapter, HW_VAR_AMPDU_FACTOR, (u8 *)(&max_AMPDU_len));
+	set_ampdu_factor(padapter, max_AMPDU_len);
 }
 
 void ERP_IE_handler(struct adapter *padapter, struct ndis_802_11_var_ie *pIE)

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1209,32 +1209,6 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 	case HW_VAR_DM_FUNC_CLR:
 		podmpriv->SupportAbility = 0;
 		break;
-	case HW_VAR_AMPDU_FACTOR:
-		{
-			u8 RegToSet_Normal[4] = {0x41, 0xa8, 0x72, 0xb9};
-			u8 FactorToSet;
-			u8 *pRegToSet;
-			u8 index = 0;
-
-			pRegToSet = RegToSet_Normal; /*  0xb972a841; */
-			FactorToSet = *((u8 *)val);
-			if (FactorToSet <= 3) {
-				FactorToSet = (1 << (FactorToSet + 2));
-				if (FactorToSet > 0xf)
-					FactorToSet = 0xf;
-
-				for (index = 0; index < 4; index++) {
-					if ((pRegToSet[index] & 0xf0) > (FactorToSet << 4))
-						pRegToSet[index] = (pRegToSet[index] & 0x0f) | (FactorToSet << 4);
-
-					if ((pRegToSet[index] & 0x0f) > FactorToSet)
-						pRegToSet[index] = (pRegToSet[index] & 0xf0) | (FactorToSet);
-
-					rtw_write8(Adapter, (REG_AGGLEN_LMT + index), pRegToSet[index]);
-				}
-			}
-		}
-		break;
 	default:
 		break;
 	}

drivers/staging/r8188eu/include/hal_intf.h

@@ -17,7 +17,6 @@ enum hw_variables {
 	HW_VAR_DM_FUNC_OP,
 	HW_VAR_DM_FUNC_RESET,
 	HW_VAR_DM_FUNC_CLR,
-	HW_VAR_AMPDU_FACTOR,
 };
 
 typedef s32 (*c2h_id_filter)(u8 id);