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7134e9e852
This change solves crashes during bind that were introduced in the driver during the OS unification refactoring due to lack of coverage of the remove() function. The fixes during remove are: (1) Prevent NULL dereference on GPUs with secure boot (2) Prevent NULL dereferences when fecs_trace is not enabled (3) Added PRAMIN blocker during driver removal if HW is no longer accesible (4) Prevent double free of debugfs nodes as they are handled on the debugfs_remove_recursive() call (5) quiesce() can now be called without checking is HW accesible flag is set (6) added function to free irq so no IRQ association is left on the driver after it is removed (7) prevent NULL dereference on nvgpu_thread_stop() if the thread is already stopped JIRA: EVLR-1739 Change-Id: I787d38f202d5267a6b34815f23e1bc88110e8455 Signed-off-by: David Nieto <dmartineznie@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1563005 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
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* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/kthread.h>
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#include <nvgpu/thread.h>
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int nvgpu_thread_proxy(void *threaddata)
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{
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struct nvgpu_thread *thread = threaddata;
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int ret = thread->fn(thread->data);
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thread->running = false;
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return ret;
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}
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int nvgpu_thread_create(struct nvgpu_thread *thread,
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void *data,
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int (*threadfn)(void *data), const char *name)
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{
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struct task_struct *task = kthread_create(nvgpu_thread_proxy,
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thread, name);
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if (IS_ERR(task))
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return PTR_ERR(task);
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thread->task = task;
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thread->fn = threadfn;
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thread->data = data;
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thread->running = true;
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wake_up_process(task);
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return 0;
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};
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void nvgpu_thread_stop(struct nvgpu_thread *thread)
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{
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if (thread->task) {
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kthread_stop(thread->task);
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thread->task = NULL;
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}
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};
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bool nvgpu_thread_should_stop(struct nvgpu_thread *thread)
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{
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return kthread_should_stop();
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};
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bool nvgpu_thread_is_running(struct nvgpu_thread *thread)
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{
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return ACCESS_ONCE(thread->running);
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};
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