From: Woody Suwalski <woodys@xandros.com>
Date: Mon, 12 Feb 2007 08:55:00 +0000 (-0800)
Subject: [PATCH] cyber2010 framebuffer on ARM Netwinder fix
X-Git-Tag: upstream/snapshot3+hdmi~35810^2~44
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cd792aa896f281a224870eb5f2ee5b24682910a5;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

[PATCH] cyber2010 framebuffer on ARM Netwinder fix

The Netwinder machines with Cyber2010 crash badly when starting Xserver.
The workaround is to disable pci burst option for this revision of video
chip.

[akpm@osdl.org: cleanup]
Signed-off-by: Woody Suwalski <woodys@xandros.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: James Simmons <jsimmons@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/video/cyber2000fb.c b/drivers/video/cyber2000fb.c
index aae6d9c..7a6eeda 100644
--- a/drivers/video/cyber2000fb.c
+++ b/drivers/video/cyber2000fb.c
@@ -1539,16 +1539,21 @@ static int cyberpro_pci_enable_mmio(struct cfb_info *cfb)
 	/*
 	 * Allow the CyberPro to accept PCI burst accesses
 	 */
-	val = cyber2000_grphr(EXT_BUS_CTL, cfb);
-	if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
-		printk(KERN_INFO "%s: enabling PCI bursts\n", cfb->fb.fix.id);
+	if (cfb->id == ID_CYBERPRO_2010) {
+		printk(KERN_INFO "%s: NOT enabling PCI bursts\n", cfb->fb.fix.id);
+	} else {
+		val = cyber2000_grphr(EXT_BUS_CTL, cfb);
+		if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
+			printk(KERN_INFO "%s: enabling PCI bursts\n",
+				cfb->fb.fix.id);
 
-		val |= EXT_BUS_CTL_PCIBURST_WRITE;
+			val |= EXT_BUS_CTL_PCIBURST_WRITE;
 
-		if (cfb->id == ID_CYBERPRO_5000)
-			val |= EXT_BUS_CTL_PCIBURST_READ;
+			if (cfb->id == ID_CYBERPRO_5000)
+				val |= EXT_BUS_CTL_PCIBURST_READ;
 
-		cyber2000_grphw(EXT_BUS_CTL, val, cfb);
+			cyber2000_grphw(EXT_BUS_CTL, val, cfb);
+		}
 	}
 
 	return 0;