From 143a2e54bf53216674eada16e8953f48b159e08a Mon Sep 17 00:00:00 2001 From: Wim Van Sebroeck Date: Wed, 18 Mar 2009 08:35:09 +0000 Subject: [WATCHDOG] More coding-style and trivial clean-up Some more cleaning-up of the watchdog drivers. Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/pcwd_pci.c | 108 ++++++++++++++++++++++++++++---------------- 1 file changed, 69 insertions(+), 39 deletions(-) (limited to 'drivers/watchdog/pcwd_pci.c') diff --git a/drivers/watchdog/pcwd_pci.c b/drivers/watchdog/pcwd_pci.c index 5d76422c402c..698f51bff1bc 100644 --- a/drivers/watchdog/pcwd_pci.c +++ b/drivers/watchdog/pcwd_pci.c @@ -24,7 +24,8 @@ * A bells and whistles driver is available from: * http://www.kernel.org/pub/linux/kernel/people/wim/pcwd/pcwd_pci/ * - * More info available at http://www.berkprod.com/ or http://www.pcwatchdog.com/ + * More info available at + * http://www.berkprod.com/ or http://www.pcwatchdog.com/ */ /* @@ -51,11 +52,10 @@ /* Module and version information */ #define WATCHDOG_VERSION "1.03" -#define WATCHDOG_DATE "21 Jan 2007" #define WATCHDOG_DRIVER_NAME "PCI-PC Watchdog" #define WATCHDOG_NAME "pcwd_pci" #define PFX WATCHDOG_NAME ": " -#define DRIVER_VERSION WATCHDOG_DRIVER_NAME " driver, v" WATCHDOG_VERSION " (" WATCHDOG_DATE ")\n" +#define DRIVER_VERSION WATCHDOG_DRIVER_NAME " driver, v" WATCHDOG_VERSION "\n" /* Stuff for the PCI ID's */ #ifndef PCI_VENDOR_ID_QUICKLOGIC @@ -76,7 +76,8 @@ #define WD_PCI_TTRP 0x04 /* Temperature Trip status */ #define WD_PCI_RL2A 0x08 /* Relay 2 Active */ #define WD_PCI_RL1A 0x10 /* Relay 1 Active */ -#define WD_PCI_R2DS 0x40 /* Relay 2 Disable Temperature-trip/reset */ +#define WD_PCI_R2DS 0x40 /* Relay 2 Disable Temperature-trip / + reset */ #define WD_PCI_RLY2 0x80 /* Activate Relay 2 on the board */ /* Port 2 : Control Status #2 */ #define WD_PCI_WDIS 0x10 /* Watchdog Disable */ @@ -114,12 +115,18 @@ static int cards_found; static int temp_panic; static unsigned long is_active; static char expect_release; -static struct { /* this is private data for each PCI-PC watchdog card */ - int supports_temp; /* Wether or not the card has a temperature device */ - int boot_status; /* The card's boot status */ - unsigned long io_addr; /* The cards I/O address */ - spinlock_t io_lock; /* the lock for io operations */ - struct pci_dev *pdev; /* the PCI-device */ +/* this is private data for each PCI-PC watchdog card */ +static struct { + /* Wether or not the card has a temperature device */ + int supports_temp; + /* The card's boot status */ + int boot_status; + /* The cards I/O address */ + unsigned long io_addr; + /* the lock for io operations */ + spinlock_t io_lock; + /* the PCI-device */ + struct pci_dev *pdev; } pcipcwd_private; /* module parameters */ @@ -130,14 +137,18 @@ 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 0 /* default heartbeat = delay-time from dip-switches */ +#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= DEBUG) - printk(KERN_DEBUG PFX "sending following data cmd=0x%02x msb=0x%02x lsb=0x%02x\n", - cmd, *msb, *lsb); + printk(KERN_DEBUG PFX "sending following data " + "cmd=0x%02x msb=0x%02x lsb=0x%02x\n", cmd, *msb, *lsb); spin_lock(&pcipcwd_private.io_lock); /* If a command requires data it should be written first. @@ -166,17 +177,20 @@ static int send_command(int cmd, int *msb, int *lsb) * the WRSP bit in port 2 and give it a max. timeout of * PCI_COMMAND_TIMEOUT to process */ got_response = inb_p(pcipcwd_private.io_addr + 2) & WD_PCI_WRSP; - for (count = 0; (count < PCI_COMMAND_TIMEOUT) && (!got_response); count++) { + for (count = 0; (count < PCI_COMMAND_TIMEOUT) && (!got_response); + count++) { mdelay(1); got_response = inb_p(pcipcwd_private.io_addr + 2) & WD_PCI_WRSP; } if (debug >= DEBUG) { if (got_response) { - printk(KERN_DEBUG PFX "time to process command was: %d ms\n", + printk(KERN_DEBUG PFX + "time to process command was: %d ms\n", count); } else { - printk(KERN_DEBUG PFX "card did not respond on command!\n"); + printk(KERN_DEBUG PFX + "card did not respond on command!\n"); } } @@ -189,7 +203,8 @@ static int send_command(int cmd, int *msb, int *lsb) inb_p(pcipcwd_private.io_addr + 6); if (debug >= DEBUG) - printk(KERN_DEBUG PFX "received following data for cmd=0x%02x: msb=0x%02x lsb=0x%02x\n", + printk(KERN_DEBUG PFX "received following data for " + "cmd=0x%02x: msb=0x%02x lsb=0x%02x\n", cmd, *msb, *lsb); } @@ -218,7 +233,8 @@ static void pcipcwd_show_card_info(void) char fw_ver_str[20]; /* The cards firmware version */ int option_switches; - got_fw_rev = send_command(CMD_GET_FIRMWARE_VERSION, &fw_rev_major, &fw_rev_minor); + got_fw_rev = send_command(CMD_GET_FIRMWARE_VERSION, &fw_rev_major, + &fw_rev_minor); if (got_fw_rev) sprintf(fw_ver_str, "%u.%02u", fw_rev_major, fw_rev_minor); else @@ -227,23 +243,27 @@ static void pcipcwd_show_card_info(void) /* Get switch settings */ option_switches = pcipcwd_get_option_switches(); - printk(KERN_INFO PFX "Found card at port 0x%04x (Firmware: %s) %s temp option\n", + printk(KERN_INFO PFX "Found card at port " + "0x%04x (Firmware: %s) %s temp option\n", (int) pcipcwd_private.io_addr, fw_ver_str, (pcipcwd_private.supports_temp ? "with" : "without")); - printk(KERN_INFO PFX "Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n", + printk(KERN_INFO PFX "Option switches (0x%02x): " + "Temperature Reset Enable=%s, Power On Delay=%s\n", option_switches, ((option_switches & 0x10) ? "ON" : "OFF"), ((option_switches & 0x08) ? "ON" : "OFF")); if (pcipcwd_private.boot_status & WDIOF_CARDRESET) - printk(KERN_INFO PFX "Previous reset was caused by the Watchdog card\n"); + printk(KERN_INFO PFX + "Previous reset was caused by the Watchdog card\n"); if (pcipcwd_private.boot_status & WDIOF_OVERHEAT) printk(KERN_INFO PFX "Card sensed a CPU Overheat\n"); if (pcipcwd_private.boot_status == 0) - printk(KERN_INFO PFX "No previous trip detected - Cold boot or reset\n"); + printk(KERN_INFO PFX + "No previous trip detected - Cold boot or reset\n"); } static int pcipcwd_start(void) @@ -283,7 +303,8 @@ static int pcipcwd_stop(void) spin_unlock(&pcipcwd_private.io_lock); if (!(stat_reg & WD_PCI_WDIS)) { - printk(KERN_ERR PFX "Card did not acknowledge disable attempt\n"); + printk(KERN_ERR PFX + "Card did not acknowledge disable attempt\n"); return -1; } @@ -364,7 +385,8 @@ static int pcipcwd_clear_status(void) } /* clear trip status & LED and keep mode of relay 2 */ - outb_p((control_status & WD_PCI_R2DS) | WD_PCI_WTRP, pcipcwd_private.io_addr + 1); + outb_p((control_status & WD_PCI_R2DS) | WD_PCI_WTRP, + pcipcwd_private.io_addr + 1); /* clear reset counter */ msb = 0; @@ -437,7 +459,8 @@ static ssize_t pcipcwd_write(struct file *file, const char __user *data, * five months ago... */ expect_release = 0; - /* scan to see whether or not we got the magic character */ + /* scan to see whether or not we got the + * magic character */ for (i = 0; i != len; i++) { char c; if (get_user(c, data + i)) @@ -531,7 +554,7 @@ static long pcipcwd_ioctl(struct file *file, unsigned int cmd, return -EFAULT; if (pcipcwd_set_heartbeat(new_heartbeat)) - return -EINVAL; + return -EINVAL; pcipcwd_keepalive(); /* Fall */ @@ -560,7 +583,8 @@ static int pcipcwd_open(struct inode *inode, struct file *file) /* /dev/watchdog can only be opened once */ if (test_and_set_bit(0, &is_active)) { if (debug >= VERBOSE) - printk(KERN_ERR PFX "Attempt to open already opened device.\n"); + printk(KERN_ERR PFX + "Attempt to open already opened device.\n"); return -EBUSY; } @@ -578,7 +602,8 @@ static int pcipcwd_release(struct inode *inode, struct file *file) if (expect_release == 42) { pcipcwd_stop(); } else { - printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n"); + printk(KERN_CRIT PFX + "Unexpected close, not stopping watchdog!\n"); pcipcwd_keepalive(); } expect_release = 0; @@ -621,7 +646,8 @@ static int pcipcwd_temp_release(struct inode *inode, struct file *file) * Notify system */ -static int pcipcwd_notify_sys(struct notifier_block *this, unsigned long code, void *unused) +static int pcipcwd_notify_sys(struct notifier_block *this, unsigned long code, + void *unused) { if (code == SYS_DOWN || code == SYS_HALT) pcipcwd_stop(); /* Turn the WDT off */ @@ -722,34 +748,38 @@ static int __devinit pcipcwd_card_init(struct pci_dev *pdev, /* If heartbeat = 0 then we use the heartbeat from the dip-switches */ if (heartbeat == 0) - heartbeat = heartbeat_tbl[(pcipcwd_get_option_switches() & 0x07)]; + heartbeat = + heartbeat_tbl[(pcipcwd_get_option_switches() & 0x07)]; - /* Check that the heartbeat value is within it's range ; if not reset to the default */ + /* 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); - printk(KERN_INFO PFX "heartbeat value must be 0