diff options
| author | Joe Millenbach <[email protected]> | 2012-07-19 18:04:41 -0700 |
|---|---|---|
| committer | H. Peter Anvin <[email protected]> | 2012-07-21 11:07:34 -0700 |
| commit | cec49df9d331feaa2fea3d24c07147c7659940d1 (patch) | |
| tree | d63b2898127138446f5c1809b416e288ae05ee26 | |
| parent | 641a1cebfe2f05fa1a48503d816fc70cf707d033 (diff) | |
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 <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Gokul Caushik <[email protected]>
Reviewed-by: Josh Triplett <[email protected]>
Signed-off-by: H. Peter Anvin <[email protected]>
| -rw-r--r-- | arch/x86/boot/compressed/early_serial_console.c | 4 | ||||
| -rw-r--r-- | arch/x86/boot/compressed/misc.h | 10 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/early_serial_console.c b/arch/x86/boot/compressed/early_serial_console.c index 261e81fb9582..d3d003cb5481 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 618e5c830f15..3ffee6e0c54c 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 |