diff options
| author | merge <null@invalid> | 2009-01-22 13:55:32 +0000 |
|---|---|---|
| committer | Andy Green <agreen@octopus.localdomain> | 2009-01-22 13:55:32 +0000 |
| commit | aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 (patch) | |
| tree | fbb786d0ac6f8a774fd834e9ce951197e60fbffa /drivers/watchdog/ib700wdt.c | |
| parent | f2d78193eae5dccd3d588d2c8ea0866efc368332 (diff) | |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040
stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch
mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage:
From: Andy Green <andy@openmoko.com>
fix-stray-endmenu.patch
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'drivers/watchdog/ib700wdt.c')
| -rw-r--r-- | drivers/watchdog/ib700wdt.c | 49 |
1 files changed, 19 insertions, 30 deletions
diff --git a/drivers/watchdog/ib700wdt.c b/drivers/watchdog/ib700wdt.c index 317ef2b16cf..4bef3ddff4a 100644 --- a/drivers/watchdog/ib700wdt.c +++ b/drivers/watchdog/ib700wdt.c @@ -91,32 +91,16 @@ static char expect_close; * */ -static int wd_times[] = { - 30, /* 0x0 */ - 28, /* 0x1 */ - 26, /* 0x2 */ - 24, /* 0x3 */ - 22, /* 0x4 */ - 20, /* 0x5 */ - 18, /* 0x6 */ - 16, /* 0x7 */ - 14, /* 0x8 */ - 12, /* 0x9 */ - 10, /* 0xA */ - 8, /* 0xB */ - 6, /* 0xC */ - 4, /* 0xD */ - 2, /* 0xE */ - 0, /* 0xF */ -}; - #define WDT_STOP 0x441 #define WDT_START 0x443 /* Default timeout */ -#define WD_TIMO 0 /* 30 seconds +/- 20%, from table */ - -static int wd_margin = WD_TIMO; +#define WATCHDOG_TIMEOUT 30 /* 30 seconds +/- 20% */ +static int timeout = WATCHDOG_TIMEOUT; /* in seconds */ +module_param(timeout, int, 0); +MODULE_PARM_DESC(timeout, + "Watchdog timeout in seconds. 0<= timeout <=30, default=" + __MODULE_STRING(WATCHDOG_TIMEOUT) "."); static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); @@ -131,6 +115,8 @@ MODULE_PARM_DESC(nowayout, static void ibwdt_ping(void) { + int wd_margin = 15 - ((timeout + 1) / 2); + spin_lock(&ibwdt_lock); /* Write a watchdog value */ @@ -148,15 +134,10 @@ static void ibwdt_disable(void) static int ibwdt_set_heartbeat(int t) { - int i; - - if ((t < 0) || (t > 30)) + if (t < 0 || t > 30) return -EINVAL; - for (i = 0x0F; i > -1; i--) - if (wd_times[i] >= t) - break; - wd_margin = i; + timeout = t; return 0; } @@ -240,7 +221,7 @@ static long ibwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) /* Fall */ case WDIOC_GETTIMEOUT: - return put_user(wd_times[wd_margin], p); + return put_user(timeout, p); default: return -ENOTTY; @@ -317,6 +298,14 @@ static int __devinit ibwdt_probe(struct platform_device *dev) goto out_nostartreg; } + /* Check that the heartbeat value is within it's range ; + * if not reset to the default */ + if (ibwdt_set_heartbeat(timeout)) { + ibwdt_set_heartbeat(WATCHDOG_TIMEOUT); + printk(KERN_INFO PFX + "timeout value must be 0<=x<=30, using %d\n", timeout); + } + res = misc_register(&ibwdt_miscdev); if (res) { printk(KERN_ERR PFX "failed to register misc device\n"); |