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tty: serial: sh-sci: Hide DMA config question 

On most Renesas ARM platforms, the SCIF serial ports can be used with
DMA, so most users will want DMA support to be enabled.

On SuperH platforms, SCI(F) serial ports cannot be used with DMA yet
(see also commit 219fb0c143 ("serial: sh-sci: Remove the platform
data dma slave rx/tx channel IDs")), so users will want it disabled to
reduce kernel size.

Hence follow the above rationale to configure the default, unless
CONFIG_EXPERT is enabled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geert Uytterhoeven 2017-11-30 14:12:01 +01:00 committed by Greg Kroah-Hartman
parent 3a987e7354
commit be7e251d20
1 changed files with 2 additions and 1 deletions
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3
drivers/tty/serial/Kconfig
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@ -781,8 +781,9 @@ config SERIAL_SH_SCI_EARLYCON
default ARCH_RENESAS || H8300
config SERIAL_SH_SCI_DMA
bool "DMA support"
bool "DMA support" if EXPERT
depends on SERIAL_SH_SCI && DMA_ENGINE
default ARCH_RENESAS
config SERIAL_PNX8XXX
bool "Enable PNX8XXX SoCs' UART Support"