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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-08-30 17:34:32 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-10-18 00:48:39 +0300
commitcb0701acfa7e3fe9e919cf2aa2aa939b7fd603c2 (patch)
tree9a6980523a6baa259e879b3efa2081b8e85d17fb /Documentation
parentac36d37e943635fc072e9d4f47e40a48fbcdb3f0 (diff)
downloadlinux-cb0701acfa7e3fe9e919cf2aa2aa939b7fd603c2.tar.xz
ACPI: platform: Unregister stale platform devices
When commit 68bdb6773289 ("ACPI: add support for ACPI reconfiguration notifiers") introduced reconfiguration notifiers, it missed the point that the ACPI table, which might be loaded and then unloaded via ConfigFS, could contain devices that were not enumerated by their parents. In such cases, the stale platform device is dangling in the system while the rest of the devices from the same table are already gone. Introduce acpi_platform_device_remove_notify() notifier that, in similar way to I²C or SPI buses, unregisters the platform devices on table removal event. Fixes: 68bdb6773289 ("ACPI: add support for ACPI reconfiguration notifiers") Depends-on: 00500147cbd3 ("drivers: Introduce device lookup variants by ACPI_COMPANION device") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> [ rjw: Changelog & function rename ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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