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drm/amdkfd: Locking PM mutex while allocating IB buffer

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Signed-off-by: Ben Goz <ben.goz@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Ben Goz 2018-05-01 17:56:10 -04:00 committed by Oded Gabbay
parent ccb76b149e
commit bfdcbfd255
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
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@ -94,12 +94,14 @@ static int pm_allocate_runlist_ib(struct packet_manager *pm,
pm_calc_rlib_size(pm, rl_buffer_size, is_over_subscription);
mutex_lock(&pm->lock);
retval = kfd_gtt_sa_allocate(pm->dqm->dev, *rl_buffer_size,
&pm->ib_buffer_obj);
if (retval) {
pr_err("Failed to allocate runlist IB\n");
return retval;
goto out;
}
*(void **)rl_buffer = pm->ib_buffer_obj->cpu_ptr;
@ -107,6 +109,9 @@ static int pm_allocate_runlist_ib(struct packet_manager *pm,
memset(*rl_buffer, 0, *rl_buffer_size);
pm->allocated = true;
out:
mutex_unlock(&pm->lock);
return retval;
}