[PATCH v2] drm/amdkfd: set "r = 0" explicitly before goto
Philip Yang
Philip.Yang at amd.com
Mon Nov 29 14:05:19 UTC 2021
To silence the following Smatch static checker warning:
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c:2615
svm_range_restore_pages()
warn: missing error code here? 'get_task_mm()' failed. 'r' = '0'
Signed-off-by: Philip Yang <Philip.Yang at amd.com>
Suggested-by: Dan Carpenter <dan.carpenter at oracle.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 663489ae56d7..187e8ab66baa 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2603,6 +2603,7 @@ svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid,
if (atomic_read(&svms->drain_pagefaults)) {
pr_debug("draining retry fault, drop fault 0x%llx\n", addr);
+ r = 0;
goto out;
}
@@ -2612,6 +2613,7 @@ svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid,
mm = get_task_mm(p->lead_thread);
if (!mm) {
pr_debug("svms 0x%p failed to get mm\n", svms);
+ r = 0;
goto out;
}
@@ -2649,6 +2651,7 @@ svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid,
if (svm_range_skip_recover(prange)) {
amdgpu_gmc_filter_faults_remove(adev, addr, pasid);
+ r = 0;
goto out_unlock_range;
}
@@ -2657,6 +2660,7 @@ svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid,
if (timestamp < AMDGPU_SVM_RANGE_RETRY_FAULT_PENDING) {
pr_debug("svms 0x%p [0x%lx %lx] already restored\n",
svms, prange->start, prange->last);
+ r = 0;
goto out_unlock_range;
}
--
2.17.1
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