diff options
| author | Krishna Reddy <vdumpa@nvidia.com> | 2011-12-29 11:06:36 -0800 |
|---|---|---|
| committer | Krishna Reddy <vdumpa@nvidia.com> | 2011-12-29 11:36:57 -0800 |
| commit | ac60f9ad0b81bb277ae4633095616fbd871e374f (patch) | |
| tree | 8abc3fc31826feb640755c9637149891966b91f4 /drivers/gpu | |
| parent | 9515f031fa33491ca7c386b5ce1ff80226fecd7f (diff) | |
gpu: ion: Fix ion handle and buffer ref counting issue.
Handle and buffer are not ref counted correct during fork from
a process, which has mmap'ed ion memory.
Change-Id: Ida98f4639f29fef8397abd07bbf317c1baa0130e
Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-on: http://git-master/r/72643
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/ion/ion.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/ion/ion.c b/drivers/gpu/ion/ion.c index 37b23af0550b..5bec864f1f42 100644 --- a/drivers/gpu/ion/ion.c +++ b/drivers/gpu/ion/ion.c @@ -796,6 +796,8 @@ static void ion_vma_open(struct vm_area_struct *vma) vma->vm_private_data = NULL; return; } + ion_buffer_get(buffer); + ion_handle_get(handle); pr_debug("%s: %d client_cnt %d handle_cnt %d alloc_cnt %d\n", __func__, __LINE__, atomic_read(&client->ref.refcount), @@ -821,6 +823,7 @@ static void ion_vma_close(struct vm_area_struct *vma) atomic_read(&buffer->ref.refcount)); ion_handle_put(handle); ion_client_put(client); + ion_buffer_put(buffer); pr_debug("%s: %d client_cnt %d handle_cnt %d alloc_cnt %d\n", __func__, __LINE__, atomic_read(&client->ref.refcount), @@ -866,6 +869,7 @@ static int ion_share_mmap(struct file *file, struct vm_area_struct *vma) ret = -EINVAL; goto err; } + ion_buffer_get(buffer); if (!handle->buffer->heap->ops->map_user) { pr_err("%s: this heap does not define a method for mapping " |