diff options
| author | Konsta Hölttä <kholtta@nvidia.com> | 2021-06-09 07:00:12 -0400 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2021-06-15 03:24:16 -0400 |
| commit | 511344da855c4a6fc06432fb478c42664519f93d (patch) | |
| tree | 3650b3ef7cab36fe85d6e8368803b2dd4bddb6eb /drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c | |
| parent | 12e89c21dec793269a0c0f1f3f2160bb7cdf5ebd (diff) | |
gpu: nvgpu: avoid faulty elpg protection
Don't store the return value of elpg re-enable if disable fails; this
could make the local status value zero again, causing the elpg-protected
call to be executed with elpg still enabled and elpg re-enabled twice.
Commit c90585856567 ("gpu: nvgpu: add cg and pg function") introduced
this bug; failure of re-enabling after a failed disable might be another
problem (and it's not clear why this is done in the first place) which
isn't propagated to the caller, but that would belong to another patch.
Bug 200565050
Change-Id: I7cf7a0887ae59e85bf0c56c38aaaadfefd16cc1c
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2541859
(cherry picked from commit 4b3591aafb8a53b051ce75629b15d2957943bd76)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2543030
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c')
0 files changed, 0 insertions, 0 deletions