diff options
| -rw-r--r-- | arch/parisc/kernel/pdc_cons.c | 46 |
1 files changed, 10 insertions, 36 deletions
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index 01f676d1673b..215d78c87bc5 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c | |||
| @@ -41,7 +41,7 @@ | |||
| 41 | 41 | ||
| 42 | /* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems. | 42 | /* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems. |
| 43 | * On production kernels EARLY_BOOTUP_DEBUG should be undefined. */ | 43 | * On production kernels EARLY_BOOTUP_DEBUG should be undefined. */ |
| 44 | #undef EARLY_BOOTUP_DEBUG | 44 | #define EARLY_BOOTUP_DEBUG |
| 45 | 45 | ||
| 46 | 46 | ||
| 47 | #include <linux/config.h> | 47 | #include <linux/config.h> |
| @@ -49,14 +49,8 @@ | |||
| 49 | #include <linux/console.h> | 49 | #include <linux/console.h> |
| 50 | #include <linux/string.h> | 50 | #include <linux/string.h> |
| 51 | #include <linux/init.h> | 51 | #include <linux/init.h> |
| 52 | #include <linux/delay.h> | ||
| 53 | #include <linux/sched.h> | ||
| 54 | #include <linux/interrupt.h> | ||
| 55 | #include <linux/major.h> | 52 | #include <linux/major.h> |
| 56 | #include <linux/tty.h> | 53 | #include <linux/tty.h> |
| 57 | #include <asm/page.h> | ||
| 58 | #include <asm/types.h> | ||
| 59 | #include <asm/system.h> | ||
| 60 | #include <asm/pdc.h> /* for iodc_call() proto and friends */ | 54 | #include <asm/pdc.h> /* for iodc_call() proto and friends */ |
| 61 | 55 | ||
| 62 | 56 | ||
| @@ -96,7 +90,6 @@ static int pdc_console_setup(struct console *co, char *options) | |||
| 96 | } | 90 | } |
| 97 | 91 | ||
| 98 | #if defined(CONFIG_PDC_CONSOLE) | 92 | #if defined(CONFIG_PDC_CONSOLE) |
| 99 | #define PDC_CONSOLE_DEVICE pdc_console_device | ||
| 100 | static struct tty_driver * pdc_console_device (struct console *c, int *index) | 93 | static struct tty_driver * pdc_console_device (struct console *c, int *index) |
| 101 | { | 94 | { |
| 102 | extern struct tty_driver console_driver; | 95 | extern struct tty_driver console_driver; |
| @@ -104,22 +97,19 @@ static struct tty_driver * pdc_console_device (struct console *c, int *index) | |||
| 104 | return &console_driver; | 97 | return &console_driver; |
| 105 | } | 98 | } |
| 106 | #else | 99 | #else |
| 107 | #define PDC_CONSOLE_DEVICE NULL | 100 | #define pdc_console_device NULL |
| 108 | #endif | 101 | #endif |
| 109 | 102 | ||
| 110 | static struct console pdc_cons = { | 103 | static struct console pdc_cons = { |
| 111 | .name = "ttyB", | 104 | .name = "ttyB", |
| 112 | .write = pdc_console_write, | 105 | .write = pdc_console_write, |
| 113 | .device = PDC_CONSOLE_DEVICE, | 106 | .device = pdc_console_device, |
| 114 | .setup = pdc_console_setup, | 107 | .setup = pdc_console_setup, |
| 115 | .flags = CON_BOOT|CON_PRINTBUFFER|CON_ENABLED, | 108 | .flags = CON_BOOT | CON_PRINTBUFFER | CON_ENABLED, |
| 116 | .index = -1, | 109 | .index = -1, |
| 117 | }; | 110 | }; |
| 118 | 111 | ||
| 119 | static int pdc_console_initialized; | 112 | static int pdc_console_initialized; |
| 120 | extern unsigned long con_start; /* kernel/printk.c */ | ||
| 121 | extern unsigned long log_end; /* kernel/printk.c */ | ||
| 122 | |||
| 123 | 113 | ||
| 124 | static void pdc_console_init_force(void) | 114 | static void pdc_console_init_force(void) |
| 125 | { | 115 | { |
| @@ -146,27 +136,11 @@ void __init pdc_console_init(void) | |||
| 146 | } | 136 | } |
| 147 | 137 | ||
| 148 | 138 | ||
| 149 | /* Unregister the pdc console with the printk console layer */ | ||
| 150 | void pdc_console_die(void) | ||
| 151 | { | ||
| 152 | if (!pdc_console_initialized) | ||
| 153 | return; | ||
| 154 | --pdc_console_initialized; | ||
| 155 | |||
| 156 | printk(KERN_INFO "Switching from PDC console\n"); | ||
| 157 | |||
| 158 | /* Don't repeat what we've already printed */ | ||
| 159 | con_start = log_end; | ||
| 160 | |||
| 161 | unregister_console(&pdc_cons); | ||
| 162 | } | ||
| 163 | |||
| 164 | |||
| 165 | /* | 139 | /* |
| 166 | * Used for emergencies. Currently only used if an HPMC occurs. If an | 140 | * Used for emergencies. Currently only used if an HPMC occurs. If an |
| 167 | * HPMC occurs, it is possible that the current console may not be | 141 | * HPMC occurs, it is possible that the current console may not be |
| 168 | * properly initialed after the PDC IO reset. This routine unregisters all | 142 | * properly initialised after the PDC IO reset. This routine unregisters |
| 169 | * of the current consoles, reinitializes the pdc console and | 143 | * all of the current consoles, reinitializes the pdc console and |
| 170 | * registers it. | 144 | * registers it. |
| 171 | */ | 145 | */ |
| 172 | 146 | ||
| @@ -177,13 +151,13 @@ void pdc_console_restart(void) | |||
| 177 | if (pdc_console_initialized) | 151 | if (pdc_console_initialized) |
| 178 | return; | 152 | return; |
| 179 | 153 | ||
| 154 | /* If we've already seen the output, don't bother to print it again */ | ||
| 155 | if (console_drivers != NULL) | ||
| 156 | pdc_cons.flags &= ~CON_PRINTBUFFER; | ||
| 157 | |||
| 180 | while ((console = console_drivers) != NULL) | 158 | while ((console = console_drivers) != NULL) |
| 181 | unregister_console(console_drivers); | 159 | unregister_console(console_drivers); |
| 182 | 160 | ||
| 183 | /* Don't repeat what we've already printed */ | ||
| 184 | con_start = log_end; | ||
| 185 | |||
| 186 | /* force registering the pdc console */ | 161 | /* force registering the pdc console */ |
| 187 | pdc_console_init_force(); | 162 | pdc_console_init_force(); |
| 188 | } | 163 | } |
| 189 | |||
