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git://nv-tegra.nvidia.com/linux-nvgpu.git
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9edd68ac52
A memset was being done right before checking the malloc'ed pointer for NULL. This completely ruins the purpose of the NULL check! Change-Id: I3d6bc000f20054b5ff18d1171e51b227628ccf7c Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2096466 Reviewed-by: Nicolas Benech <nbenech@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: Philip Elcan <pelcan@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/*
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* Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <nvgpu/bug.h>
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#include <nvgpu/types.h>
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#include <nvgpu/atomic.h>
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#include <nvgpu/nvgpu_common.h>
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#include <nvgpu/os_sched.h>
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#include <nvgpu/gk20a.h>
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#include <nvgpu/enabled.h>
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#include <nvgpu/posix/probe.h>
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#include "os_posix.h"
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/*
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* Somewhat meaningless in userspace...
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*/
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void nvgpu_kernel_restart(void *cmd)
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{
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BUG();
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}
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/*
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* We have no runtime PM stuff in userspace so these are really just noops.
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*/
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void gk20a_busy_noresume(struct gk20a *g)
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{
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}
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void gk20a_idle_nosuspend(struct gk20a *g)
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{
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}
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int gk20a_busy(struct gk20a *g)
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{
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nvgpu_atomic_inc(&g->usage_count);
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return 0;
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}
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void gk20a_idle(struct gk20a *g)
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{
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nvgpu_atomic_dec(&g->usage_count);
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}
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/*
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* This function aims to initialize enough stuff to make unit testing worth
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* while. There are several interfaces and APIs that rely on the struct gk20a's
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* state in order to function: logging, for example, but there are many other
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* things, too.
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*
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* Initialize as much of that as possible here. This is meant to be equivalent
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* to the kernel space driver's probe function.
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*/
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struct gk20a *nvgpu_posix_probe(void)
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{
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struct gk20a *g;
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struct nvgpu_os_posix *p;
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p = malloc(sizeof(*p));
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if (p == NULL) {
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return NULL;
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}
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(void) memset(p, 0, sizeof(*p));
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g = &p->g;
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g->log_mask = 0;
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g->mm.g = g;
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if (nvgpu_kmem_init(g) != 0) {
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goto fail_kmem;
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}
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if (nvgpu_init_enabled_flags(g) != 0) {
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goto fail_enabled_flags;
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}
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return g;
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fail_enabled_flags:
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nvgpu_kmem_fini(g, 0);
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fail_kmem:
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free(p);
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return NULL;
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}
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void nvgpu_posix_cleanup(struct gk20a *g)
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{
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struct nvgpu_os_posix *p = nvgpu_os_posix_from_gk20a(g);
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nvgpu_kmem_fini(g, 0);
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nvgpu_free_enabled_flags(g);
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free(p);
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}
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