Input: applespi - select CRC16 module

In some rare randconfig builds, CRC16 is disabled, which leads
to a link error:

drivers/input/keyboard/applespi.o: In function `applespi_send_cmd_msg':
applespi.c:(.text+0x449f): undefined reference to `crc16'
drivers/input/keyboard/applespi.o: In function `applespi_verify_crc':
applespi.c:(.text+0x7538): undefined reference to `crc16'

This symbol is meant to be selected for each user in Kconfig,
so do that here as well.

Fixes: 038b1a05eae6 ("Input: add Apple SPI keyboard and trackpad driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 8e9c3ea..ebb19e2 100644 (file)
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -76,6 +76,7 @@ config KEYBOARD_APPLESPI
        depends on ACPI && EFI
        depends on SPI
        depends on X86 || COMPILE_TEST
+       select CRC16
        help
          Say Y here if you are running Linux on any Apple MacBook8,1 or later,
          or any MacBookPro13,* or MacBookPro14,*.