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drm/radeon/kms: Avoid crash when trying to cleanup uninitialized structure 

Add boolean to record if some part of the driver are initialized or
not this allow to avoid a crash when trying to cleanup uninitialized
structure members.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jerome Glisse 2009-12-11 20:36:19 +01:00 committed by Dave Airlie
parent d2efdf6d6f
commit 0a0c7596c6
3 changed files with 13 additions and 4 deletions
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4
drivers/gpu/drm/radeon/radeon.h
View File

@ -162,6 +162,7 @@ struct radeon_fence_driver {
struct list_head created;
struct list_head emited;
struct list_head signaled;
bool initialized;
};
struct radeon_fence {
@ -202,8 +203,9 @@ struct radeon_surface_reg {
struct radeon_mman {
struct ttm_bo_global_ref bo_global_ref;
struct ttm_global_reference mem_global_ref;
bool mem_global_referenced;
struct ttm_bo_device bdev;
bool mem_global_referenced;
bool initialized;
};
struct radeon_bo {

9
drivers/gpu/drm/radeon/radeon_fence.c
View File

@ -324,7 +324,7 @@ int radeon_fence_driver_init(struct radeon_device *rdev)
write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
r = radeon_scratch_get(rdev, &rdev->fence_drv.scratch_reg);
if (r) {
DRM_ERROR("Fence failed to get a scratch register.");
dev_err(rdev->dev, "fence failed to get scratch register\n");
write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
return r;
}
@ -335,9 +335,10 @@ int radeon_fence_driver_init(struct radeon_device *rdev)
INIT_LIST_HEAD(&rdev->fence_drv.signaled);
rdev->fence_drv.count_timeout = 0;
init_waitqueue_head(&rdev->fence_drv.queue);
rdev->fence_drv.initialized = true;
write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
if (radeon_debugfs_fence_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for fence !\n");
dev_err(rdev->dev, "fence debugfs file creation failed\n");
}
return 0;
}
@ -346,11 +347,13 @@ void radeon_fence_driver_fini(struct radeon_device *rdev)
{
unsigned long irq_flags;
if (!rdev->fence_drv.initialized)
return;
wake_up_all(&rdev->fence_drv.queue);
write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
radeon_scratch_free(rdev, rdev->fence_drv.scratch_reg);
write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
DRM_INFO("radeon: fence finalized\n");
rdev->fence_drv.initialized = false;
}

4
drivers/gpu/drm/radeon/radeon_ttm.c
View File

@ -494,6 +494,7 @@ int radeon_ttm_init(struct radeon_device *rdev)
DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
return r;
}
rdev->mman.initialized = true;
r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM,
rdev->mc.real_vram_size >> PAGE_SHIFT);
if (r) {
@ -541,6 +542,8 @@ void radeon_ttm_fini(struct radeon_device *rdev)
{
int r;
if (!rdev->mman.initialized)
return;
if (rdev->stollen_vga_memory) {
r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
if (r == 0) {
@ -554,6 +557,7 @@ void radeon_ttm_fini(struct radeon_device *rdev)
ttm_bo_device_release(&rdev->mman.bdev);
radeon_gart_fini(rdev);
radeon_ttm_global_fini(rdev);
rdev->mman.initialized = false;
DRM_INFO("radeon: ttm finalized\n");
}