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linux/drivers/tty/serdev
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Ronald Tschalär 35d4670aae serdev: Fix detection of UART devices on Apple machines. 
On Apple devices the _CRS method returns an empty resource template, and
the resource settings are instead provided by the _DSM method. But
commit 33364d63c7 (serdev: Add ACPI
devices by ResourceSource field) changed the search for serdev devices
to require valid, non-empty resource template, thereby breaking Apple
devices and causing bluetooth devices to not be found.

This expands the check so that if we don't find a valid template, and
we're on an Apple machine, then just check for the device being an
immediate child of the controller and having a "baud" property.

Cc: <stable@vger.kernel.org> # 5.5
Fixes: 33364d63c7 ("serdev: Add ACPI devices by ResourceSource field")
Signed-off-by: Ronald Tschalär <ronald@innovation.ch>
Link: https://lore.kernel.org/r/20200211194723.486217-1-ronald@innovation.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-06 14:10:44 +01:00
..
core.c serdev: Fix detection of UART devices on Apple machines. 2020-03-06 14:10:44 +01:00
Kconfig tty: add SPDX identifiers to Kconfig and Makefiles 2019-04-04 18:48:43 +02:00
Makefile Revert "serdev: simplify Makefile" 2019-12-18 15:01:41 +01:00
serdev-ttyport.c serdev: ttyport: restore client ops on deregistration 2020-02-10 12:26:44 -08:00