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serial: Enable Freescale 16550 workaround on arm 

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)