booke/watchdog: refine and clean up the codes

Basically, this patch does the following:
1. Move the codes of parsing boot parameters from setup-common.c
   to driver. In this way, code reader can know directly that
   there are boot parameters that can change the timeout.
2. Make boot parameter 'booke_wdt_period' effective.
   currently, when driver is loaded, default timeout is always
   being used in stead of booke_wdt_period.
3. Wrap up the watchdog timeout in device struct and clean up
   unnecessary codes.

Signed-off-by: Tang Yuantian <yuantian.tang@freescale.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: Li Yang <leoli@freescale.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 0 insertions, 27 deletions

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 79b7612ac6fa..fb87e4ac9e86 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -718,33 +718,6 @@ static int powerpc_debugfs_init(void)
 arch_initcall(powerpc_debugfs_init);
 #endif
 
-#ifdef CONFIG_BOOKE_WDT
-extern u32 booke_wdt_enabled;
-extern u32 booke_wdt_period;
-
-/* Checks wdt=x and wdt_period=xx command-line option */
-notrace int __init early_parse_wdt(char *p)
-{
-        if (p && strncmp(p, "0", 1) != 0)
-                booke_wdt_enabled = 1;
-
-        return 0;
-}
-early_param("wdt", early_parse_wdt);
-
-int __init early_parse_wdt_period(char *p)
-{
-        unsigned long ret;
-        if (p) {
-                if (!kstrtol(p, 0, &ret))
-                        booke_wdt_period = ret;
-        }
-
-        return 0;
-}
-early_param("wdt_period", early_parse_wdt_period);
-#endif  /* CONFIG_BOOKE_WDT */
-
 void ppc_printk_progress(char *s, unsigned short hex)
 {
         pr_info("%s\n", s);