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gpu: nvgpu: Correct permissions for cbc_ctrl debug node

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The cbc_ctrl debugfs node is created with both read and write
permissions, however, this node only supports being written and
not read. Fix this by removing read permissions for this debugfs
node.

Bug 3402817

Change-Id: I16ffba8285144389758be283121c3096745aae73
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2630027
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Martin Radev <mradev@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Jon Hunter
2021-11-22 16:38:48 +00:00
committed by mobile promotions
parent 8c53b54649
commit 02ab4c3880
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/nvgpu/os/linux/debug_gr.c
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@@ -477,7 +477,7 @@ int gr_gk20a_debugfs_init(struct gk20a *g)
if (!d)
return -ENOMEM;
/* Using debugfs_create_file_unsafe to allow mmap */
d = debugfs_create_file_unsafe("cbc_ctrl", S_IRUSR | S_IWUSR,
d = debugfs_create_file_unsafe("cbc_ctrl", S_IWUSR,
l->debugfs, g, &cbc_ctrl_debug_fops);
if (!d)
return -ENOMEM;