From: Joe Millenbach Date: Fri, 20 Jul 2012 01:04:41 +0000 (-0700) Subject: x86, boot: Exclude early_serial_console.c if can't use it. X-Git-Tag: v3.6-rc1~92^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cec49df9d331feaa2fea3d24c07147c7659940d1;p=platform%2Fkernel%2Flinux-exynos.git x86, boot: Exclude early_serial_console.c if can't use it. Removes early_serial_console.c code if we don't have the config option that enables it (EARLY_PRINTK). When disabling this code, make early_serial_base a constant 0 to allow the compiler to optimize away the code that checks for early_serial_base. Signed-off-by: Joe Millenbach Link: http://lkml.kernel.org/r/1342746282-28497-7-git-send-email-jmillenbach@gmail.com Signed-off-by: Gokul Caushik Reviewed-by: Josh Triplett Signed-off-by: H. Peter Anvin --- diff --git a/arch/x86/boot/compressed/early_serial_console.c b/arch/x86/boot/compressed/early_serial_console.c index 261e81f..d3d003c 100644 --- a/arch/x86/boot/compressed/early_serial_console.c +++ b/arch/x86/boot/compressed/early_serial_console.c @@ -1,5 +1,9 @@ #include "misc.h" +#ifdef CONFIG_EARLY_PRINTK + int early_serial_base; #include "../early_serial_console.c" + +#endif diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index 618e5c8..3ffee6e 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -43,7 +43,17 @@ int cmdline_find_option(const char *option, char *buffer, int bufsize); int cmdline_find_option_bool(const char *option); /* early_serial_console.c */ +#ifdef CONFIG_EARLY_PRINTK + extern int early_serial_base; void console_init(void); +#else + +static const int early_serial_base; +static inline void console_init(void) +{ } + +#endif + #endif