nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-22 17:36:20 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: add check for is_railgated

Browse Source 
When try to read '/sys/kernel/debug/gpu.0/railgate_residency'
debug fs node, NULL pointer access error can be happened if
is_railgated function is not assinged.
Add check for is_railgated before calling the function pointer.

Bug 200682233

Change-Id: I4a03d4e19b04d02815b792d7d967d4a1d5f42c35
Signed-off-by: Alvin Park <apark@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2459751
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Hardik T Shah <hardikts@nvidia.com>
Reviewed-by: Phoenix Jung <pjung@nvidia.com>
Reviewed-by: Jay Kumar Bajaj <jbajaj@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alvin Park
2020-12-15 10:34:44 +09:00
committed by mobile promotions
parent 7bf2833f34
commit 438215b056
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/nvgpu/os/linux/debug.c
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2017-2018 NVIDIA Corporation. All rights reserved.
* Copyright (C) 2017-2020 NVIDIA Corporation. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -224,7 +224,7 @@ static int railgate_residency_show(struct seq_file *s, void *data)
unsigned long total_rail_gate_time_ms;
unsigned long total_rail_ungate_time_ms;
if (platform->is_railgated(dev_from_gk20a(g))) {
if (platform->is_railgated && platform->is_railgated(dev_from_gk20a(g))) {
time_since_last_state_transition_ms =
jiffies_to_msecs(jiffies -
g->pstats.last_rail_gate_complete);