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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2017-11-30 11:16:31 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-15 22:27:44 +0300
commit6a28fd2bbc94bfca105632e5ef8a9dbe63ba0b39 (patch)
treecebd7b97d2018044f7720866ced47a1b871513c0
parent93ad86735d68c6809566a6091a170dc6edf5875a (diff)
downloadlinux-6a28fd2bbc94bfca105632e5ef8a9dbe63ba0b39.tar.xz
tty: goldfish: Enable 'earlycon' only if built-in
Commit 3840ed9548f7 ("tty: goldfish: Implement support for kernel 'earlycon' parameter") breaks an allmodconfig config on x86: | LD vmlinux.o | MODPOST vmlinux.o |drivers/tty/serial/earlycon.o: In function `parse_options': |drivers/tty/serial/earlycon.c:97: undefined reference to `uart_parse_earlycon' |Makefile:1005: recipe for target 'vmlinux' failed earlycon.c::parse_options() invokes uart_parse_earlycon() from serial_core.c which is compiled=m because GOLDFISH_TTY itself (and most others) are =m. To avoid that, I'm adding the _CONSOLE config option which is selected if the GOLDFISH module itself is =y since it doesn't need the early bits for the =m case (other drivers do the same dance). The alternative would be to move uart_parse_earlycon() from serial_core.c to earlycon.c (we don't have that many users of that function). Fixes: 3840ed9548f7 ("tty: goldfish: Implement support for kernel 'earlycon' parameter") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Miodrag Dinic <miodrag.dinic@mips.com> Acked-by: Miodrag Dinic <miodrag.dinic@mips.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/tty/Kconfig6
-rw-r--r--drivers/tty/goldfish.c2
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index cc2b4d9433ed..b811442c5ce6 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -394,10 +394,14 @@ config GOLDFISH_TTY
depends on GOLDFISH
select SERIAL_CORE
select SERIAL_CORE_CONSOLE
- select SERIAL_EARLYCON
help
Console and system TTY driver for the Goldfish virtual platform.
+config GOLDFISH_TTY_EARLY_CONSOLE
+ bool
+ default y if GOLDFISH_TTY=y
+ select SERIAL_EARLYCON
+
config DA_TTY
bool "DA TTY"
depends on METAG_DA
diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c
index 7f657bb5113c..1c1bd0afcd48 100644
--- a/drivers/tty/goldfish.c
+++ b/drivers/tty/goldfish.c
@@ -433,6 +433,7 @@ static int goldfish_tty_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_GOLDFISH_TTY_EARLY_CONSOLE
static void gf_early_console_putchar(struct uart_port *port, int ch)
{
__raw_writel(ch, port->membase);
@@ -456,6 +457,7 @@ static int __init gf_earlycon_setup(struct earlycon_device *device,
}
OF_EARLYCON_DECLARE(early_gf_tty, "google,goldfish-tty", gf_earlycon_setup);
+#endif
static const struct of_device_id goldfish_tty_of_match[] = {
{ .compatible = "google,goldfish-tty", },