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Fix permissions for dp_hotplug_error_code sysfs node

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DisplayPort kernel driver passes error code/status to hardware composer
via the dp_hotplug_error_code sysfs file. When HWC receives/consumes
the error, it will write "0" into that file to reset the error code. So
this file must be readable and writable by the HWC code running with
"system" user/group permissions.
Previously we used to set the ownership to system:system, but in order
to be more consistent with the rest of sysfs files in that directory,
we can use root:graphics instead with permissions 0664. HWC runs
under the "graphics" group, so this should allow HWC write access.

Bug: 324953626
Test: checked permissions of dp_hotplug_error_code sysfs
Change-Id: Idf65acc12d158a78565c41f4e2aea24362e2cdff
This commit is contained in:
Sergey Volk 2024-02-14 00:57:52 +00:00
parent 57df3553b6
commit b5769ac1f1
2 changed files with 2 additions and 2 deletions
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2
conf/init.zuma.rc
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@ -681,8 +681,6 @@ on fs
chown system system /sys/class/dqe0/atc/gain_limit
chown system system /sys/class/dqe0/atc/lt_calc_ab_shift
chown system system /sys/devices/platform/110f0000.drmdp/drm-displayport/dp_hotplug_error_code
chown system system /sys/devices/platform/19470000.drmdecon/early_wakeup
chmod 0660 /sys/devices/platform/19470000.drmdecon/early_wakeup