Merge ../linux-2.6-watchdog-mm

5 files changed, 123 insertions, 59 deletions

diff --git a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c
index 8e1e6e48e0a7..aab6621817a0 100644
--- a/drivers/char/watchdog/pcwd.c
+++ b/drivers/char/watchdog/pcwd.c
@@ -2,7 +2,7 @@
  * PC Watchdog Driver
  * by Ken Hollis (khollis@bitgate.com)
  *
- * Permission granted from Simon Machell (73244.1270@compuserve.com)
+ * Permission granted from Simon Machell (smachell@berkprod.com)
  * Written for the Linux Kernel, and GPLed by Ken Hollis
  *
  * 960107       Added request_region routines, modulized the whole thing.
@@ -70,8 +70,8 @@
 #include <asm/io.h>             /* For inb/outb/... */
 
 /* Module and version information */
-#define WATCHDOG_VERSION "1.17"
-#define WATCHDOG_DATE "12 Feb 2006"
+#define WATCHDOG_VERSION "1.18"
+#define WATCHDOG_DATE "06 Jan 2007"
 #define WATCHDOG_DRIVER_NAME "ISA-PC Watchdog"
 #define WATCHDOG_NAME "pcwd"
 #define PFX WATCHDOG_NAME ": "
@@ -132,6 +132,18 @@
 #define CMD_ISA_DELAY_TIME_8SECS        0x0C
 #define CMD_ISA_RESET_RELAYS            0x0D
 
+/* Watchdog's Dip Switch heartbeat values */
+static const int heartbeat_tbl [] = {
+        20,     /* OFF-OFF-OFF  = 20 Sec  */
+        40,     /* OFF-OFF-ON   = 40 Sec  */
+        60,     /* OFF-ON-OFF   =  1 Min  */
+        300,    /* OFF-ON-ON    =  5 Min  */
+        600,    /* ON-OFF-OFF   = 10 Min  */
+        1800,   /* ON-OFF-ON    = 30 Min  */
+        3600,   /* ON-ON-OFF    =  1 Hour */
+        7200,   /* ON-ON-ON     =  2 hour */
+};
+
 /*
  * We are using an kernel timer to do the pinging of the watchdog
  * every ~500ms. We try to set the internal heartbeat of the
@@ -167,10 +179,10 @@ static int debug = QUIET;
 module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "Debug level: 0=Quiet, 1=Verbose, 2=Debug (default=0)");
 
-#define WATCHDOG_HEARTBEAT 60           /* 60 sec default heartbeat */
+#define WATCHDOG_HEARTBEAT 0            /* default heartbeat = delay-time from dip-switches */
 static int heartbeat = WATCHDOG_HEARTBEAT;
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<=heartbeat<=7200, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<=heartbeat<=7200 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
@@ -844,6 +856,10 @@ static int __devinit pcwatchdog_init(int base_addr)
         /* Show info about the card itself */
         pcwd_show_card_info();
 
+        /* If heartbeat = 0 then we use the heartbeat from the dip-switches */
+        if (heartbeat == 0)
+                heartbeat = heartbeat_tbl[(pcwd_get_option_switches() & 0x07)];
+
         /* Check that the heartbeat value is within it's range ; if not reset to the default */
         if (pcwd_set_heartbeat(heartbeat)) {
                 pcwd_set_heartbeat(WATCHDOG_HEARTBEAT);
diff --git a/drivers/char/watchdog/pcwd_pci.c b/drivers/char/watchdog/pcwd_pci.c
index f4872c871063..95ddcd8c1db2 100644
--- a/drivers/char/watchdog/pcwd_pci.c
+++ b/drivers/char/watchdog/pcwd_pci.c
@@ -1,7 +1,7 @@
 /*
  *      Berkshire PCI-PC Watchdog Card Driver
  *
- *      (c) Copyright 2003-2005 Wim Van Sebroeck <wim@iguana.be>.
+ *      (c) Copyright 2003-2007 Wim Van Sebroeck <wim@iguana.be>.
  *
  *      Based on source code of the following authors:
  *        Ken Hollis <kenji@bitgate.com>,
@@ -51,8 +51,8 @@
 #include <asm/io.h>             /* For inb/outb/... */
 
 /* Module and version information */
-#define WATCHDOG_VERSION "1.02"
-#define WATCHDOG_DATE "03 Sep 2005"
+#define WATCHDOG_VERSION "1.03"
+#define WATCHDOG_DATE "06 Jan 2007"
 #define WATCHDOG_DRIVER_NAME "PCI-PC Watchdog"
 #define WATCHDOG_NAME "pcwd_pci"
 #define PFX WATCHDOG_NAME ": "
@@ -96,6 +96,18 @@
 #define CMD_WRITE_WATCHDOG_TIMEOUT              0x19
 #define CMD_GET_CLEAR_RESET_COUNT               0x84
 
+/* Watchdog's Dip Switch heartbeat values */
+static const int heartbeat_tbl [] = {
+        5,      /* OFF-OFF-OFF  =  5 Sec  */
+        10,     /* OFF-OFF-ON   = 10 Sec  */
+        30,     /* OFF-ON-OFF   = 30 Sec  */
+        60,     /* OFF-ON-ON    =  1 Min  */
+        300,    /* ON-OFF-OFF   =  5 Min  */
+        600,    /* ON-OFF-ON    = 10 Min  */
+        1800,   /* ON-ON-OFF    = 30 Min  */
+        3600,   /* ON-ON-ON     =  1 hour */
+};
+
 /* We can only use 1 card due to the /dev/watchdog restriction */
 static int cards_found;
 
@@ -119,10 +131,10 @@ static int debug = QUIET;
 module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "Debug level: 0=Quiet, 1=Verbose, 2=Debug (default=0)");
 
-#define WATCHDOG_HEARTBEAT 2    /* 2 sec default heartbeat */
+#define WATCHDOG_HEARTBEAT 0    /* default heartbeat = delay-time from dip-switches */
 static int heartbeat = WATCHDOG_HEARTBEAT;
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
@@ -286,7 +298,9 @@ static int pcipcwd_stop(void)
 static int pcipcwd_keepalive(void)
 {
         /* Re-trigger watchdog by writing to port 0 */
+        spin_lock(&pcipcwd_private.io_lock);
         outb_p(0x42, pcipcwd_private.io_addr);  /* send out any data */
+        spin_unlock(&pcipcwd_private.io_lock);
 
         if (debug >= DEBUG)
                 printk(KERN_DEBUG PFX "Watchdog keepalive signal send\n");
@@ -373,7 +387,9 @@ static int pcipcwd_get_temperature(int *temperature)
         if (!pcipcwd_private.supports_temp)
                 return -ENODEV;
 
+        spin_lock(&pcipcwd_private.io_lock);
         *temperature = inb_p(pcipcwd_private.io_addr);
+        spin_unlock(&pcipcwd_private.io_lock);
 
         /*
          * Convert celsius to fahrenheit, since this was
@@ -711,6 +727,10 @@ static int __devinit pcipcwd_card_init(struct pci_dev *pdev,
         /* Show info about the card itself */
         pcipcwd_show_card_info();
 
+        /* If heartbeat = 0 then we use the heartbeat from the dip-switches */
+        if (heartbeat == 0)
+                heartbeat = heartbeat_tbl[(pcipcwd_get_option_switches() & 0x07)];
+
         /* Check that the heartbeat value is within it's range ; if not reset to the default */
         if (pcipcwd_set_heartbeat(heartbeat)) {
                 pcipcwd_set_heartbeat(WATCHDOG_HEARTBEAT);
@@ -798,6 +818,8 @@ static int __init pcipcwd_init_module(void)
 static void __exit pcipcwd_cleanup_module(void)
 {
         pci_unregister_driver(&pcipcwd_driver);
+
+        printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
 }
 
 module_init(pcipcwd_init_module);
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index 2da5ac99687c..1ad1f22e97d7 100644
--- a/drivers/char/watchdog/pcwd_usb.c
+++ b/drivers/char/watchdog/pcwd_usb.c
@@ -1,7 +1,7 @@
 /*
  *      Berkshire USB-PC Watchdog Card Driver
  *
- *      (c) Copyright 2004 Wim Van Sebroeck <wim@iguana.be>.
+ *      (c) Copyright 2004-2007 Wim Van Sebroeck <wim@iguana.be>.
  *
  *      Based on source code of the following authors:
  *        Ken Hollis <kenji@bitgate.com>,
@@ -24,26 +24,25 @@
  *      http://www.berkprod.com/ or http://www.pcwatchdog.com/
  */
 
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/fs.h>
-#include <linux/smp_lock.h>
-#include <linux/completion.h>
-#include <asm/uaccess.h>
-#include <linux/usb.h>
-#include <linux/mutex.h>
+#include <linux/module.h>       /* For module specific items */
+#include <linux/moduleparam.h>  /* For new moduleparam's */
+#include <linux/types.h>        /* For standard types (like size_t) */
+#include <linux/errno.h>        /* For the -ENODEV/... values */
+#include <linux/kernel.h>       /* For printk/panic/... */
+#include <linux/delay.h>        /* For mdelay function */
+#include <linux/miscdevice.h>   /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/watchdog.h>     /* For the watchdog specific items */
+#include <linux/notifier.h>     /* For notifier support */
+#include <linux/reboot.h>       /* For reboot_notifier stuff */
+#include <linux/init.h>         /* For __init/__exit/... */
+#include <linux/fs.h>           /* For file operations */
+#include <linux/usb.h>          /* For USB functions */
+#include <linux/slab.h>         /* For kmalloc, ... */
+#include <linux/mutex.h>        /* For mutex locking */
 #include <linux/hid.h>          /* For HID_REQ_SET_REPORT & HID_DT_REPORT */
 
+#include <asm/uaccess.h>        /* For copy_to_user/put_user/... */
+
 
 #ifdef CONFIG_USB_DEBUG
         static int debug = 1;
@@ -57,8 +56,8 @@
 
 
 /* Module and Version Information */
-#define DRIVER_VERSION "1.01"
-#define DRIVER_DATE "15 Mar 2005"
+#define DRIVER_VERSION "1.02"
+#define DRIVER_DATE "06 Jan 2007"
 #define DRIVER_AUTHOR "Wim Van Sebroeck <wim@iguana.be>"
 #define DRIVER_DESC "Berkshire USB-PC Watchdog driver"
 #define DRIVER_LICENSE "GPL"
@@ -75,10 +74,10 @@ MODULE_ALIAS_MISCDEV(TEMP_MINOR);
 module_param(debug, int, 0);
 MODULE_PARM_DESC(debug, "Debug enabled or not");
 
-#define WATCHDOG_HEARTBEAT 2    /* 2 sec default heartbeat */
+#define WATCHDOG_HEARTBEAT 0    /* default heartbeat = delay-time from dip-switches */
 static int heartbeat = WATCHDOG_HEARTBEAT;
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
@@ -110,6 +109,18 @@ MODULE_DEVICE_TABLE (usb, usb_pcwd_table);
 #define CMD_ENABLE_WATCHDOG             0x30    /* Enable / Disable Watchdog */
 #define CMD_DISABLE_WATCHDOG            CMD_ENABLE_WATCHDOG
 
+/* Watchdog's Dip Switch heartbeat values */
+static const int heartbeat_tbl [] = {
+        5,      /* OFF-OFF-OFF  =  5 Sec  */
+        10,     /* OFF-OFF-ON   = 10 Sec  */
+        30,     /* OFF-ON-OFF   = 30 Sec  */
+        60,     /* OFF-ON-ON    =  1 Min  */
+        300,    /* ON-OFF-OFF   =  5 Min  */
+        600,    /* ON-OFF-ON    = 10 Min  */
+        1800,   /* ON-ON-OFF    = 30 Min  */
+        3600,   /* ON-ON-ON     =  1 hour */
+};
+
 /* We can only use 1 card due to the /dev/watchdog restriction */
 static int cards_found;
 
@@ -682,6 +693,10 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
                 ((option_switches & 0x10) ? "ON" : "OFF"),
                 ((option_switches & 0x08) ? "ON" : "OFF"));
 
+        /* If heartbeat = 0 then we use the heartbeat from the dip-switches */
+        if (heartbeat == 0)
+                heartbeat = heartbeat_tbl[(option_switches & 0x07)];
+
         /* Check that the heartbeat value is within it's range ; if not reset to the default */
         if (usb_pcwd_set_heartbeat(usb_pcwd, heartbeat)) {
                 usb_pcwd_set_heartbeat(usb_pcwd, WATCHDOG_HEARTBEAT);
diff --git a/drivers/char/watchdog/pnx4008_wdt.c b/drivers/char/watchdog/pnx4008_wdt.c
index 3a55fc6abcd8..0e3d589d6332 100644
--- a/drivers/char/watchdog/pnx4008_wdt.c
+++ b/drivers/char/watchdog/pnx4008_wdt.c
@@ -283,7 +283,8 @@ static int pnx4008_wdt_probe(struct platform_device *pdev)
         wdt_base = (void __iomem *)IO_ADDRESS(res->start);
 
         wdt_clk = clk_get(&pdev->dev, "wdt_ck");
-        if (!wdt_clk) {
+        if (IS_ERR(wdt_clk)) {
+                ret = PTR_ERR(wdt_clk);
                 release_resource(wdt_mem);
                 kfree(wdt_mem);
                 goto out;
diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c
index 18cb050c3862..5a5cc2a2c5af 100644
--- a/drivers/char/watchdog/s3c2410_wdt.c
+++ b/drivers/char/watchdog/s3c2410_wdt.c
@@ -366,13 +366,15 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
         wdt_mem = request_mem_region(res->start, size, pdev->name);
         if (wdt_mem == NULL) {
                 printk(KERN_INFO PFX "failed to get memory region\n");
-                return -ENOENT;
+                ret = -ENOENT;
+                goto err_req;
         }
 
         wdt_base = ioremap(res->start, size);
         if (wdt_base == 0) {
                 printk(KERN_INFO PFX "failed to ioremap() region\n");
-                return -EINVAL;
+                ret = -EINVAL;
+                goto err_req;
         }
 
         DBG("probe: mapped wdt_base=%p\n", wdt_base);
@@ -380,22 +382,21 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
         if (res == NULL) {
                 printk(KERN_INFO PFX "failed to get irq resource\n");
-                iounmap(wdt_base);
-                return -ENOENT;
+                ret = -ENOENT;
+                goto err_map;
         }
 
         ret = request_irq(res->start, s3c2410wdt_irq, 0, pdev->name, pdev);
         if (ret != 0) {
                 printk(KERN_INFO PFX "failed to install irq (%d)\n", ret);
-                iounmap(wdt_base);
-                return ret;
+                goto err_map;
         }
 
         wdt_clock = clk_get(&pdev->dev, "watchdog");
-        if (wdt_clock == NULL) {
+        if (IS_ERR(wdt_clock)) {
                 printk(KERN_INFO PFX "failed to find watchdog clock source\n");
-                iounmap(wdt_base);
-                return -ENOENT;
+                ret = PTR_ERR(wdt_clock);
+                goto err_irq;
         }
 
         clk_enable(wdt_clock);
@@ -418,8 +419,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
         if (ret) {
                 printk (KERN_ERR PFX "cannot register miscdev on minor=%d (%d)\n",
                         WATCHDOG_MINOR, ret);
-                iounmap(wdt_base);
-                return ret;
+                goto err_clk;
         }
 
         if (tmr_atboot && started == 0) {
@@ -434,26 +434,36 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
         }
 
         return 0;
+
+ err_clk:
+        clk_disable(wdt_clock);
+        clk_put(wdt_clock);
+
+ err_irq:
+        free_irq(wdt_irq->start, pdev);
+
+ err_map:
+        iounmap(wdt_base);
+
+ err_req:
+        release_resource(wdt_mem);
+        kfree(wdt_mem);
+
+        return ret;
 }
 
 static int s3c2410wdt_remove(struct platform_device *dev)
 {
-        if (wdt_mem != NULL) {
-                release_resource(wdt_mem);
-                kfree(wdt_mem);
-                wdt_mem = NULL;
-        }
+        release_resource(wdt_mem);
+        kfree(wdt_mem);
+        wdt_mem = NULL;
 
-        if (wdt_irq != NULL) {
-                free_irq(wdt_irq->start, dev);
-                wdt_irq = NULL;
-        }
+        free_irq(wdt_irq->start, dev);
+        wdt_irq = NULL;
 
-        if (wdt_clock != NULL) {
-                clk_disable(wdt_clock);
-                clk_put(wdt_clock);
-                wdt_clock = NULL;
-        }
+        clk_disable(wdt_clock);
+        clk_put(wdt_clock);
+        wdt_clock = NULL;
 
         iounmap(wdt_base);
         misc_deregister(&s3c2410wdt_miscdev);