From: Michel Dänzer <michel.daen...@amd.com>
Signed-off-by: Michel Dänzer <michel.daen...@amd.com>
---
Not sure the CS ioctl can actually run concurrently with suspend/resume, but
might be better safe than sorry?
drivers/gpu/drm/radeon/radeon_device.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_device.c
b/drivers/gpu/drm/radeon/radeon_device.c
index 5f3d02d..80b4799 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -881,6 +881,10 @@ int radeon_suspend_kms(struct drm_device *dev,
pm_message_t state)
}
}
}
+
+ /* Prevent CS ioctl from interfering */
+ cs_mutex_lock(rdev);
+
/* evict vram memory */
radeon_bo_evict_vram(rdev);
/* wait for gpu to finish processing current batch */
@@ -944,6 +948,9 @@ int radeon_resume_kms(struct drm_device *dev)
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
}
+
+ cs_mutex_unlock(rdev);
+
return 0;
}
--
1.7.6.3
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