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drm/lima: check vm != NULL in lima_vm_put

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No need to handle this check before calling lima_vm_put.

Tested-by: Bhushan Shah <bshah@kde.org>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-4-yuq825@gmail.com
This commit is contained in:
Qiang Yu 2020-04-21 21:35:44 +08:00
parent d04f2a8e5b
commit 24943269e5
2 changed files with 4 additions and 6 deletions
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7
drivers/gpu/drm/lima/lima_sched.c
View file

@ -252,8 +252,7 @@ static struct dma_fence *lima_sched_run_job(struct drm_sched_job *job)
lima_mmu_switch_vm(pipe->mmu[i], vm);
}
if (last_vm)
lima_vm_put(last_vm);
lima_vm_put(last_vm);
trace_lima_task_run(task);
@ -416,9 +415,7 @@ static void lima_sched_timedout_job(struct drm_sched_job *job)
lima_mmu_page_fault_resume(pipe->mmu[i]);
}
if (pipe->current_vm)
lima_vm_put(pipe->current_vm);
lima_vm_put(pipe->current_vm);
pipe->current_vm = NULL;
pipe->current_task = NULL;

3
drivers/gpu/drm/lima/lima_vm.h
View file

@ -54,7 +54,8 @@ static inline struct lima_vm *lima_vm_get(struct lima_vm *vm)
static inline void lima_vm_put(struct lima_vm *vm)
{
kref_put(&vm->refcount, lima_vm_release);
if (vm)
kref_put(&vm->refcount, lima_vm_release);
}
void lima_vm_print(struct lima_vm *vm);