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drm/radeon/kms/pm: fix segfault in clock code
author
Alex Deucher
<alexdeucher@gmail.com>
Sun, 14 Mar 2010 20:31:36 +0000
(16:31 -0400)
committer
Dave Airlie
<airlied@redhat.com>
Tue, 30 Mar 2010 23:53:46 +0000
(09:53 +1000)
Make sure we have a crtc assigned to the encoder
before dereferencing it.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
drivers/gpu/drm/radeon/radeon_pm.c
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diff --git
a/drivers/gpu/drm/radeon/radeon_pm.c
b/drivers/gpu/drm/radeon/radeon_pm.c
index
6458d52
..
a4b5749
100644
(file)
--- a/
drivers/gpu/drm/radeon/radeon_pm.c
+++ b/
drivers/gpu/drm/radeon/radeon_pm.c
@@
-279,7
+279,8
@@
void radeon_pm_compute_clocks(struct radeon_device *rdev)
list_for_each_entry(connector,
&ddev->mode_config.connector_list, head) {
if (connector->encoder &&
- connector->dpms != DRM_MODE_DPMS_OFF) {
+ connector->encoder->crtc &&
+ connector->dpms != DRM_MODE_DPMS_OFF) {
radeon_crtc = to_radeon_crtc(connector->encoder->crtc);
rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id);
++count;