linux-kernel - [PATCH 1/3] radeonfb: Fix 64 bits resources on 32 bits archs

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Date:	Tue, 22 Apr 2008 11:26:07 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	<linux-fbdev-devel@...ts.sourceforge.net>
CC:	<linuxppc-dev@...abs.org>, <linux-kernel@...r.kernel.org>,
	<adaplas@...il.com>, Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 1/3] radeonfb: Fix 64 bits resources on 32 bits archs

This fixes radeonfb to not truncate 64 bits resources on 32 bits
platforms. Unfortunately, there are still issues with addresses
returned to userspace via struct fb_fix_screeninfo. This will
have to be dealt with separately.

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---

 drivers/video/aty/radeon_base.c |    4 ++--
 drivers/video/aty/radeonfb.h    |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

--- linux-work.orig/drivers/video/aty/radeon_base.c	2008-04-22 11:04:19.000000000 +1000
+++ linux-work/drivers/video/aty/radeon_base.c	2008-04-22 11:05:00.000000000 +1000
@@ -1886,7 +1886,7 @@ static int __devinit radeon_set_fbinfo (
 	info->screen_size = rinfo->mapped_vram;
 	/* Fill fix common fields */
 	strlcpy(info->fix.id, rinfo->name, sizeof(info->fix.id));
-        info->fix.smem_start = rinfo->fb_base_phys;
+        info->fix.smem_start = (unsigned long)rinfo->fb_base_phys;
         info->fix.smem_len = rinfo->video_ram;
         info->fix.type = FB_TYPE_PACKED_PIXELS;
         info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
@@ -1894,7 +1894,7 @@ static int __devinit radeon_set_fbinfo (
         info->fix.ypanstep = 1;
         info->fix.ywrapstep = 0;
         info->fix.type_aux = 0;
-        info->fix.mmio_start = rinfo->mmio_base_phys;
+        info->fix.mmio_start = (unsigned long)rinfo->mmio_base_phys;
         info->fix.mmio_len = RADEON_REGSIZE;
 	info->fix.accel = FB_ACCEL_ATI_RADEON;
 
Index: linux-work/drivers/video/aty/radeonfb.h
===================================================================
--- linux-work.orig/drivers/video/aty/radeonfb.h	2008-04-22 11:03:17.000000000 +1000
+++ linux-work/drivers/video/aty/radeonfb.h	2008-04-22 11:03:27.000000000 +1000
@@ -287,8 +287,8 @@ struct radeonfb_info {
 
 	char			name[DEVICE_NAME_SIZE];
 
-	unsigned long		mmio_base_phys;
-	unsigned long		fb_base_phys;
+	resource_size_t		mmio_base_phys;
+	resource_size_t		fb_base_phys;
 
 	void __iomem		*mmio_base;
 	void __iomem		*fb_base;
--
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