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tty: serial: sh-sci: Add default for number of ports for compile-testing 

When compile-testing an allmodconfig kernel for a platform without
sh-sci serial ports, the SERIAL_SH_SCI_NR_UARTS symbol of type "int"
doesn't get assigned a numerical default value, but an empty string,
leading to a build failure:

   .config:3814:warning: symbol value '' invalid for SERIAL_SH_SCI_NR_UARTS
   ...
   make[3]: *** [silentoldconfig] Error 1

Fix this by explicitly providing a default value of 2, like before.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: f6731485a5 ("tty: serial: sh-sci: Hide number of ports config question")
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 2017-12-18 09:50:57 +01:00 committed by Greg Kroah-Hartman
parent 38d5583ff8
commit 19ac50f655
1 changed files with 1 additions and 0 deletions
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drivers/tty/serial/Kconfig
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@ -766,6 +766,7 @@ config SERIAL_SH_SCI_NR_UARTS
default "3" if H8300
default "10" if SUPERH
default "18" if ARCH_RENESAS
default "2"
config SERIAL_SH_SCI_CONSOLE
bool "Support for console on SuperH SCI(F)" if EXPERT