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ACPI: SPCR: Consider baud rate 0 as preconfigured state
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Wed, 21 Nov 2018 13:43:37 +0000 (15:43 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 26 Nov 2018 17:29:47 +0000 (18:29 +0100)
commitb413b1abeb21b4a152c0bf8d1379efa30759b6e3
treec92825bb01d4db9d64ef906c232688331d718bf1tree | snapshot
parent2e6e902d185027f8e3cb8b7305238f7e35d6a436commit | diff
ACPI: SPCR: Consider baud rate 0 as preconfigured state

Since SPCR 1.04 [1] the baud rate of 0 means a preconfigured state of UART.
Assume firmware or bootloader configures console correctly.

[1]: https://docs.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/acpi/spcr.c diff | blob | history