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authorDave Airlie <airlied@starflyer.(none)>2005-09-30 17:09:07 +1000
committerDave Airlie <airlied@linux.ie>2005-09-30 17:09:07 +1000
commit689b9d74b1c00e1316fbb7d1e912fe1227fdb1ab (patch)
tree46d53c2d2ecb31d3db08f034052106030a9d8046 /drivers/char/drm/radeon_drv.c
parentb6ce156c415544f900e031890c78eba8bc92f9b3 (diff)
drm: add option to force writeback off.
In order to get some better debugging from people about certain hangs/crashes we need to be able to turn AGP writeback off permanently... Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char/drm/radeon_drv.c')
-rw-r--r--drivers/char/drm/radeon_drv.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/char/drm/radeon_drv.c b/drivers/char/drm/radeon_drv.c
index 6c1766120c1..7074d01ed1d 100644
--- a/drivers/char/drm/radeon_drv.c
+++ b/drivers/char/drm/radeon_drv.c
@@ -37,6 +37,11 @@
#include "drm_pciids.h"
+int radeon_no_wb;
+
+MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers\n");
+module_param_named(no_wb, radeon_no_wb, int, 0444);
+
static int postinit(struct drm_device *dev, unsigned long flags)
{
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d: %s\n",