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Rafael J. Wysocki
5798b46271
Every platform driver can be forced to match a device that doesn't match
its list of device IDs because of device_match_driver_override(), so
platform drivers that rely on the existence of a device's ACPI companion
object need to verify its presence.
Accordingly, add a requisite ACPI_COMPANION() check against NULL to the
surfacepro3_button driver.
Fixes: d913a5a12b ("platform/surface: surfacepro3_button: Convert to a platform driver")
Signed-off-by: Rafael J. Wysocki <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Chen Yu <[email protected]>
Link: https://patch.msgid.link/[email protected]
Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Ilpo Järvinen <[email protected]>