From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: Mon, 29 Aug 2011 20:14:29 +0000 (+0300)
Subject: staging: xgifb: fail the probe if no supported LCD video mode found
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=de736dbb2253679806a281f125983f58d1ae1218;p=openwrt%2Fstaging%2Fblogic.git

staging: xgifb: fail the probe if no supported LCD video mode found

Fail the probe if the LCD resolution described in card firmware does
not match any of the supported modes.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/xgifb/XGI_main_26.c b/drivers/staging/xgifb/XGI_main_26.c
index 34678a3b0fc2..e989eb4e5163 100644
--- a/drivers/staging/xgifb/XGI_main_26.c
+++ b/drivers/staging/xgifb/XGI_main_26.c
@@ -449,7 +449,7 @@ static int XGIfb_GetXG21DefaultLVDSModeIdx(void)
 		XGIfb_mode_idx++;
 	}
 	if (!found_mode)
-		XGIfb_mode_idx = 0;
+		XGIfb_mode_idx = -1;
 
 	return XGIfb_mode_idx;
 }
@@ -2313,6 +2313,11 @@ static int __devinit xgifb_probe(struct pci_dev *pdev,
 		}
 	}
 
+	if (xgifb_mode_idx < 0) {
+		dev_err(&pdev->dev, "no supported video mode found\n");
+		goto error_1;
+	}
+
 	if (xgi21_drvlcdcaplist) {
 		int m;