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drm/amdkfd: set "r = 0" explicitly before goto

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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@amd.com>
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang 2021-11-26 12:42:50 -05:00 committed by Alex Deucher
parent c9beecc5c9
commit fc2c456ea8
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_svm.c
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@ -2614,6 +2614,7 @@ 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;
}
@ -2623,6 +2624,7 @@ 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;
}
@ -2660,6 +2662,7 @@ 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;
}
@ -2668,6 +2671,7 @@ 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;
}