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gpu: nvgpu fix coverity issue in therm/cg unit

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Add NULL check for ELCG and BLCG HALs based on cgmode
to avoid coverity issue: CWE-476: NULL Pointer Dereference

Bug 3952896

Change-Id: I3ee717645bbecaafddb5d485f57550e213bf762b
Signed-off-by: Divya <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2864656
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Divya
2023-02-28 07:11:48 +00:00
committed by mobile promotions
parent 2acfb55780
commit 6d65e58fd2
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/nvgpu/common/power_features/cg/cg.c
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@@ -33,8 +33,13 @@ static void nvgpu_cg_set_mode(struct gk20a *g, u32 cgmode, u32 mode_config)
const struct nvgpu_device *dev = NULL;
struct nvgpu_fifo *f = &g->fifo;
if ((g->ops.therm.init_blcg_mode == NULL) &&
(g->ops.therm.init_elcg_mode == NULL)) {
/*
* Add NULL check for ELCG and BLCG HALs based on cgmode
* to avoid coverity issue: CWE-476: NULL Pointer Dereference
*/
if ((cgmode == BLCG_MODE && g->ops.therm.init_blcg_mode == NULL) ||
(cgmode == ELCG_MODE &&
g->ops.therm.init_elcg_mode == NULL)) {
return;
}