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| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-10-22 21:41:00 +0300 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-10-27 19:20:03 +0100 |
| commit | 99aed9227073fb34ce2880cbc7063e04185a65e1 (patch) | |
| tree | 1ad09224ff8e8fcb88575b70c593bebc230556d1 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | device property: Keep secondary firmware node secondary by type (diff) | |
| download | wireguard-linux-99aed9227073fb34ce2880cbc7063e04185a65e1.tar.xz wireguard-linux-99aed9227073fb34ce2880cbc7063e04185a65e1.zip | |
device property: Don't clear secondary pointer for shared primary firmware node
It appears that firmware nodes can be shared between devices. In such case
when a (child) device is about to be deleted, its firmware node may be shared
and ACPI_COMPANION_SET(..., NULL) call for it breaks the secondary link
of the shared primary firmware node.
In order to prevent that, check, if the device has a parent and parent's
firmware node is shared with its child, and avoid crashing the link.
Fixes: c15e1bdda436 ("device property: Fix the secondary firmware node handling in set_primary_fwnode()")
Reported-by: Ferry Toth <fntoth@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
Cc: 5.9+ <stable@vger.kernel.org> # 5.9+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions