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serial: Enable Freescale 16550 workaround on arm

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The same serial hardware is present on LS2080A which is arm64, and
LS1021A which is arm32, so don't limit the workaround to PPC.

Unlike PPC which uses arch/powerpc/kernel/legacy_serial.c, the ARM
targets use drivers/tty/serial/of_serial.c, so add the handle_irq
override check there as well.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Scott Wood 2015-10-07 17:31:21 -05:00 committed by Greg Kroah-Hartman
parent 37f0679964
commit d43b54d269
2 changed files with 7 additions and 2 deletions
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4
drivers/tty/serial/8250/Kconfig
View File

@ -274,8 +274,8 @@ config SERIAL_8250_ACORN
config SERIAL_8250_FSL
bool
depends on SERIAL_8250_CONSOLE && PPC_UDBG_16550
default PPC
depends on SERIAL_8250_CONSOLE
default PPC || ARM || ARM64
config SERIAL_8250_DW
tristate "Support for Synopsys DesignWare 8250 quirks"

5
drivers/tty/serial/of_serial.c
View File

@ -154,6 +154,11 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
break;
}
if (IS_ENABLED(CONFIG_SERIAL_8250_FSL) &&
(of_device_is_compatible(np, "fsl,ns16550") ||
of_device_is_compatible(np, "fsl,16550-FIFO64")))
port->handle_irq = fsl8250_handle_irq;
return 0;
out:
if (info->clk)