From: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Date: Sun, 24 Apr 2011 17:08:44 +0000 (+0000)
Subject: viafb: use write combining for video ram
X-Git-Tag: v3.0-rc1~364^2~3
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=cace71b318aa0126e7cfe49fe5e9133e0395c478;p=~shefty%2Frdma-dev.git

viafb: use write combining for video ram

This can give a speed up of factor 6-9, which is quite notable.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
---

diff --git a/drivers/video/via/via-core.c b/drivers/video/via/via-core.c
index 6723d6910cd..5b0129b42d8 100644
--- a/drivers/video/via/via-core.c
+++ b/drivers/video/via/via-core.c
@@ -505,7 +505,7 @@ static int __devinit via_pci_setup_mmio(struct viafb_dev *vdev)
 	ret = vdev->fbmem_len = viafb_get_fb_size_from_pci(vdev->chip_type);
 	if (ret < 0)
 		goto out_unmap;
-	vdev->fbmem = ioremap_nocache(vdev->fbmem_start, vdev->fbmem_len);
+	vdev->fbmem = ioremap_wc(vdev->fbmem_start, vdev->fbmem_len);
 	if (vdev->fbmem == NULL) {
 		ret = -ENOMEM;
 		goto out_unmap;