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Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/early_printk.c65
1 files changed, 33 insertions, 32 deletions
diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index 519a5e10be53..2acfd3fdc0cc 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -176,10 +176,19 @@ asmlinkage void early_printk(const char *fmt, ...)
va_end(ap);
}
+static inline void early_console_register(struct console *con, int keep_early)
+{
+ early_console = con;
+ if (keep_early)
+ early_console->flags &= ~CON_BOOT;
+ else
+ early_console->flags |= CON_BOOT;
+ register_console(early_console);
+}
static int __init setup_early_printk(char *buf)
{
- int keep_early;
+ int keep;
if (!buf)
return 0;
@@ -188,42 +197,34 @@ static int __init setup_early_printk(char *buf)
return 0;
early_console_initialized = 1;
- keep_early = (strstr(buf, "keep") != NULL);
-
- if (!strncmp(buf, "serial", 6)) {
- early_serial_init(buf + 6);
- early_console = &early_serial_console;
- } else if (!strncmp(buf, "ttyS", 4)) {
- early_serial_init(buf);
- early_console = &early_serial_console;
- } else if (!strncmp(buf, "vga", 3)
- && boot_params.screen_info.orig_video_isVGA == 1) {
- max_xpos = boot_params.screen_info.orig_video_cols;
- max_ypos = boot_params.screen_info.orig_video_lines;
- current_ypos = boot_params.screen_info.orig_y;
- early_console = &early_vga_console;
+ keep = (strstr(buf, "keep") != NULL);
+
+ while (*buf != '\0') {
+ if (!strncmp(buf, "serial", 6)) {
+ early_serial_init(buf + 6);
+ early_console_register(&early_serial_console, keep);
+ }
+ if (!strncmp(buf, "ttyS", 4)) {
+ early_serial_init(buf + 4);
+ early_console_register(&early_serial_console, keep);
+ }
+ if (!strncmp(buf, "vga", 3) &&
+ boot_params.screen_info.orig_video_isVGA == 1) {
+ max_xpos = boot_params.screen_info.orig_video_cols;
+ max_ypos = boot_params.screen_info.orig_video_lines;
+ current_ypos = boot_params.screen_info.orig_y;
+ early_console_register(&early_vga_console, keep);
+ }
#ifdef CONFIG_EARLY_PRINTK_DBGP
- } else if (!strncmp(buf, "dbgp", 4)) {
- if (early_dbgp_init(buf+4) < 0)
- return 0;
- early_console = &early_dbgp_console;
- /*
- * usb subsys will reset ehci controller, so don't keep
- * that early console
- */
- keep_early = 0;
+ if (!strncmp(buf, "dbgp", 4) && !early_dbgp_init(buf + 4))
+ early_console_register(&early_dbgp_console, keep);
#endif
#ifdef CONFIG_HVC_XEN
- } else if (!strncmp(buf, "xen", 3)) {
- early_console = &xenboot_console;
+ if (!strncmp(buf, "xen", 3))
+ early_console_register(&xenboot_console, keep);
#endif
+ buf++;
}
-
- if (keep_early)
- early_console->flags &= ~CON_BOOT;
- else
- early_console->flags |= CON_BOOT;
- register_console(early_console);
return 0;
}