linux-kernel - [PATCH 12/19] Staging: xgifb: Refactor XGI

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Message-Id: <0303d364f64e6af0730046ccdcea8d00bb2bc430.1341498466.git.magomez@igalia.com>
Date:	Thu,  5 Jul 2012 16:45:55 +0200
From:	Miguel Gómez <magomez@...lia.com>
To:	arnaud.patard@...-net.org, gregkh@...uxfoundation.org,
	aaro.koskinen@....fi, dan.carpenter@...cle.com
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Miguel Gómez <magomez@...lia.com>
Subject: [PATCH 12/19] Staging: xgifb: Refactor XGI_GetVBType().

Refactor XGI_GetVBType() to reduce indentation and fix style warnings.

Signed-off-by: Miguel Gómez <magomez@...lia.com>
---
 drivers/staging/xgifb/vb_setmode.c |   69 +++++++++++++++++++-----------------
 1 file changed, 36 insertions(+), 33 deletions(-)

diff --git a/drivers/staging/xgifb/vb_setmode.c b/drivers/staging/xgifb/vb_setmode.c
index 03edf36..251145e 100644
--- a/drivers/staging/xgifb/vb_setmode.c
+++ b/drivers/staging/xgifb/vb_setmode.c
@@ -2559,42 +2559,45 @@ void XGI_GetVBType(struct vb_device_info *pVBInfo)
 {
 	unsigned short flag, tempbx, tempah;
 
-	if (pVBInfo->IF_DEF_LVDS == 0) {
-		tempbx = VB_SIS302B;
-		flag = xgifb_reg_get(pVBInfo->Part4Port, 0x00);
-		if (flag != 0x02) {
-			tempbx = VB_SIS301;
-			flag = xgifb_reg_get(pVBInfo->Part4Port, 0x01);
-			if (flag >= 0xB0) {
-				tempbx = VB_SIS301B;
-				if (flag >= 0xC0) {
-					tempbx = VB_XGI301C;
-					if (flag >= 0xD0) {
-						tempbx = VB_SIS301LV;
-						if (flag >= 0xE0) {
-							tempbx = VB_SIS302LV;
-							tempah = xgifb_reg_get(
-							    pVBInfo->Part4Port,
-							    0x39);
-							if (tempah != 0xFF)
-								tempbx =
-								    VB_XGI301C;
-						}
-					}
-				}
+	if (pVBInfo->IF_DEF_LVDS != 0)
+		return;
 
-				if (tempbx & (VB_SIS301B | VB_SIS302B)) {
-					flag = xgifb_reg_get(
-							pVBInfo->Part4Port,
-							0x23);
+	tempbx = VB_SIS302B;
+	flag = xgifb_reg_get(pVBInfo->Part4Port, 0x00);
+	if (flag == 0x02)
+		goto finish;
 
-					if (!(flag & 0x02))
-						tempbx = tempbx | VB_NoLCD;
-				}
-			}
-		}
-		pVBInfo->VBType = tempbx;
+	tempbx = VB_SIS301;
+	flag = xgifb_reg_get(pVBInfo->Part4Port, 0x01);
+	if (flag < 0xB0)
+		goto finish;
+
+	tempbx = VB_SIS301B;
+	if (flag < 0xC0)
+		goto bigger_than_0xB0;
+
+	tempbx = VB_XGI301C;
+	if (flag < 0xD0)
+		goto bigger_than_0xB0;
+
+	tempbx = VB_SIS301LV;
+	if (flag < 0xE0)
+		goto bigger_than_0xB0;
+
+	tempbx = VB_SIS302LV;
+	tempah = xgifb_reg_get(pVBInfo->Part4Port, 0x39);
+	if (tempah != 0xFF)
+		tempbx = VB_XGI301C;
+
+bigger_than_0xB0:
+	if (tempbx & (VB_SIS301B | VB_SIS302B)) {
+		flag = xgifb_reg_get(pVBInfo->Part4Port, 0x23);
+		if (!(flag & 0x02))
+			tempbx = tempbx | VB_NoLCD;
 	}
+
+finish:
+	pVBInfo->VBType = tempbx;
 }
 
 static void XGI_GetVBInfo(unsigned short ModeNo, unsigned short ModeIdIndex,
-- 
1.7.9.5

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