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[WATCHDOG 54/57] wdrtas: clean up, coding style, switch to unlocked_i…
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…octl

Review and switch to unlocked_ioctl

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Alan Cox authored and Wim Van Sebroeck committed Jun 21, 2008
1 parent 694b16b commit dae67a2
Showing 1 changed file with 41 additions and 62 deletions.
103 changes: 41 additions & 62 deletions drivers/watchdog/wdrtas.c
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Original file line number Diff line number Diff line change
Expand Up @@ -35,9 +35,9 @@
#include <linux/reboot.h>
#include <linux/types.h>
#include <linux/watchdog.h>
#include <linux/uaccess.h>

#include <asm/rtas.h>
#include <asm/uaccess.h>

#define WDRTAS_MAGIC_CHAR 42
#define WDRTAS_SUPPORTED_MASK (WDIOF_SETTIMEOUT | \
Expand All @@ -56,7 +56,7 @@ static int wdrtas_nowayout = 0;
#endif

static atomic_t wdrtas_miscdev_open = ATOMIC_INIT(0);
static char wdrtas_expect_close = 0;
static char wdrtas_expect_close;

static int wdrtas_interval;

Expand Down Expand Up @@ -86,8 +86,8 @@ static char wdrtas_logbuffer[WDRTAS_LOGBUFFER_LEN];
* RTAS function set-indicator (surveillance). The unit of interval is
* seconds.
*/
static int
wdrtas_set_interval(int interval)

static int wdrtas_set_interval(int interval)
{
long result;
static int print_msg = 10;
Expand All @@ -97,7 +97,7 @@ wdrtas_set_interval(int interval)

result = rtas_call(wdrtas_token_set_indicator, 3, 1, NULL,
WDRTAS_SURVEILLANCE_IND, 0, interval);
if ( (result < 0) && (print_msg) ) {
if (result < 0 && print_msg) {
printk(KERN_ERR "wdrtas: setting the watchdog to %i "
"timeout failed: %li\n", interval, result);
print_msg--;
Expand All @@ -116,16 +116,14 @@ wdrtas_set_interval(int interval)
* as reported by the RTAS function ibm,get-system-parameter. The unit
* of the return value is seconds.
*/
static int
wdrtas_get_interval(int fallback_value)
static int wdrtas_get_interval(int fallback_value)
{
long result;
char value[4];

result = rtas_call(wdrtas_token_get_sp, 3, 1, NULL,
WDRTAS_SP_SPI, (void *)__pa(&value), 4);
if ( (value[0] != 0) || (value[1] != 2) || (value[3] != 0) ||
(result < 0) ) {
if (value[0] != 0 || value[1] != 2 || value[3] != 0 || result < 0) {
printk(KERN_WARNING "wdrtas: could not get sp_spi watchdog "
"timeout (%li). Continuing\n", result);
return fallback_value;
Expand All @@ -141,8 +139,7 @@ wdrtas_get_interval(int fallback_value)
* wdrtas_timer_start starts the watchdog by calling the RTAS function
* set-interval (surveillance)
*/
static void
wdrtas_timer_start(void)
static void wdrtas_timer_start(void)
{
wdrtas_set_interval(wdrtas_interval);
}
Expand All @@ -153,8 +150,7 @@ wdrtas_timer_start(void)
* wdrtas_timer_stop stops the watchdog timer by calling the RTAS function
* set-interval (surveillance)
*/
static void
wdrtas_timer_stop(void)
static void wdrtas_timer_stop(void)
{
wdrtas_set_interval(0);
}
Expand All @@ -165,8 +161,7 @@ wdrtas_timer_stop(void)
* wdrtas_log_scanned_event prints a message to the log buffer dumping
* the results of the last event-scan call
*/
static void
wdrtas_log_scanned_event(void)
static void wdrtas_log_scanned_event(void)
{
int i;

Expand All @@ -175,13 +170,13 @@ wdrtas_log_scanned_event(void)
"%02x %02x %02x %02x %02x %02x %02x %02x "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
(i / 16) + 1, (WDRTAS_LOGBUFFER_LEN / 16),
wdrtas_logbuffer[i + 0], wdrtas_logbuffer[i + 1],
wdrtas_logbuffer[i + 2], wdrtas_logbuffer[i + 3],
wdrtas_logbuffer[i + 4], wdrtas_logbuffer[i + 5],
wdrtas_logbuffer[i + 6], wdrtas_logbuffer[i + 7],
wdrtas_logbuffer[i + 8], wdrtas_logbuffer[i + 9],
wdrtas_logbuffer[i + 10], wdrtas_logbuffer[i + 11],
wdrtas_logbuffer[i + 12], wdrtas_logbuffer[i + 13],
wdrtas_logbuffer[i + 0], wdrtas_logbuffer[i + 1],
wdrtas_logbuffer[i + 2], wdrtas_logbuffer[i + 3],
wdrtas_logbuffer[i + 4], wdrtas_logbuffer[i + 5],
wdrtas_logbuffer[i + 6], wdrtas_logbuffer[i + 7],
wdrtas_logbuffer[i + 8], wdrtas_logbuffer[i + 9],
wdrtas_logbuffer[i + 10], wdrtas_logbuffer[i + 11],
wdrtas_logbuffer[i + 12], wdrtas_logbuffer[i + 13],
wdrtas_logbuffer[i + 14], wdrtas_logbuffer[i + 15]);
}

Expand All @@ -192,8 +187,7 @@ wdrtas_log_scanned_event(void)
* RTAS function event-scan and repeats these calls as long as there are
* events available. All events will be dumped.
*/
static void
wdrtas_timer_keepalive(void)
static void wdrtas_timer_keepalive(void)
{
long result;

Expand All @@ -218,8 +212,7 @@ wdrtas_timer_keepalive(void)
* wdrtas_get_temperature returns the current temperature in Fahrenheit. It
* uses the RTAS call get-sensor-state, token 3 to do so
*/
static int
wdrtas_get_temperature(void)
static int wdrtas_get_temperature(void)
{
long result;
int temperature = 0;
Expand All @@ -243,8 +236,7 @@ wdrtas_get_temperature(void)
* returns a bitmask of defines WDIOF_... as defined in
* include/linux/watchdog.h
*/
static int
wdrtas_get_status(void)
static int wdrtas_get_status(void)
{
return 0; /* TODO */
}
Expand All @@ -255,8 +247,7 @@ wdrtas_get_status(void)
* returns a bitmask of defines WDIOF_... as defined in
* include/linux/watchdog.h, indicating why the watchdog rebooted the system
*/
static int
wdrtas_get_boot_status(void)
static int wdrtas_get_boot_status(void)
{
return 0; /* TODO */
}
Expand All @@ -276,8 +267,7 @@ wdrtas_get_boot_status(void)
* character 'V'. This character allows the watchdog device to be closed
* properly.
*/
static ssize_t
wdrtas_write(struct file *file, const char __user *buf,
static ssize_t wdrtas_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
int i;
Expand Down Expand Up @@ -306,7 +296,6 @@ wdrtas_write(struct file *file, const char __user *buf,

/**
* wdrtas_ioctl - ioctl function for the watchdog device
* @inode: inode structure
* @file: file structure
* @cmd: command for ioctl
* @arg: argument pointer
Expand All @@ -315,9 +304,9 @@ wdrtas_write(struct file *file, const char __user *buf,
*
* wdrtas_ioctl implements the watchdog API ioctls
*/
static int
wdrtas_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)

static long wdrtas_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int __user *argp = (void __user *)arg;
int i;
Expand Down Expand Up @@ -357,9 +346,9 @@ wdrtas_ioctl(struct inode *inode, struct file *file,
wdrtas_timer_keepalive();
wdrtas_timer_start();
}
/* not implemented. Done by H8
if (i & WDIOS_TEMPPANIC) {
/* not implemented. Done by H8 */
}
} */
return 0;

case WDIOC_KEEPALIVE:
Expand Down Expand Up @@ -399,8 +388,7 @@ wdrtas_ioctl(struct inode *inode, struct file *file,
*
* function called when watchdog device is opened
*/
static int
wdrtas_open(struct inode *inode, struct file *file)
static int wdrtas_open(struct inode *inode, struct file *file)
{
/* only open once */
if (atomic_inc_return(&wdrtas_miscdev_open) > 1) {
Expand All @@ -423,8 +411,7 @@ wdrtas_open(struct inode *inode, struct file *file)
*
* close function. Always succeeds
*/
static int
wdrtas_close(struct inode *inode, struct file *file)
static int wdrtas_close(struct inode *inode, struct file *file)
{
/* only stop watchdog, if this was announced using 'V' before */
if (wdrtas_expect_close == WDRTAS_MAGIC_CHAR)
Expand Down Expand Up @@ -453,8 +440,7 @@ wdrtas_close(struct inode *inode, struct file *file)
* wdrtas_temp_read gives the temperature to the users by copying this
* value as one byte into the user space buffer. The unit is Fahrenheit...
*/
static ssize_t
wdrtas_temp_read(struct file *file, char __user *buf,
static ssize_t wdrtas_temp_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
int temperature = 0;
Expand All @@ -478,8 +464,7 @@ wdrtas_temp_read(struct file *file, char __user *buf,
*
* function called when temperature device is opened
*/
static int
wdrtas_temp_open(struct inode *inode, struct file *file)
static int wdrtas_temp_open(struct inode *inode, struct file *file)
{
return nonseekable_open(inode, file);
}
Expand All @@ -493,8 +478,7 @@ wdrtas_temp_open(struct inode *inode, struct file *file)
*
* close function. Always succeeds
*/
static int
wdrtas_temp_close(struct inode *inode, struct file *file)
static int wdrtas_temp_close(struct inode *inode, struct file *file)
{
return 0;
}
Expand All @@ -509,10 +493,10 @@ wdrtas_temp_close(struct inode *inode, struct file *file)
*
* wdrtas_reboot stops the watchdog in case of a reboot
*/
static int
wdrtas_reboot(struct notifier_block *this, unsigned long code, void *ptr)
static int wdrtas_reboot(struct notifier_block *this,
unsigned long code, void *ptr)
{
if ( (code==SYS_DOWN) || (code==SYS_HALT) )
if (code == SYS_DOWN || code == SYS_HALT)
wdrtas_timer_stop();

return NOTIFY_DONE;
Expand All @@ -524,7 +508,7 @@ static const struct file_operations wdrtas_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdrtas_write,
.ioctl = wdrtas_ioctl,
.unlocked_ioctl = wdrtas_ioctl,
.open = wdrtas_open,
.release = wdrtas_close,
};
Expand Down Expand Up @@ -562,8 +546,7 @@ static struct notifier_block wdrtas_notifier = {
* this watchdog driver. It tolerates, if "get-sensor-state" and
* "ibm,get-system-parameter" are not available.
*/
static int
wdrtas_get_tokens(void)
static int wdrtas_get_tokens(void)
{
wdrtas_token_get_sensor_state = rtas_token("get-sensor-state");
if (wdrtas_token_get_sensor_state == RTAS_UNKNOWN_SERVICE) {
Expand Down Expand Up @@ -603,8 +586,7 @@ wdrtas_get_tokens(void)
* wdrtas_register_devs unregisters the watchdog and temperature watchdog
* misc devs
*/
static void
wdrtas_unregister_devs(void)
static void wdrtas_unregister_devs(void)
{
misc_deregister(&wdrtas_miscdev);
if (wdrtas_token_get_sensor_state != RTAS_UNKNOWN_SERVICE)
Expand All @@ -619,8 +601,7 @@ wdrtas_unregister_devs(void)
* wdrtas_register_devs registers the watchdog and temperature watchdog
* misc devs
*/
static int
wdrtas_register_devs(void)
static int wdrtas_register_devs(void)
{
int result;

Expand Down Expand Up @@ -651,8 +632,7 @@ wdrtas_register_devs(void)
*
* registers the file handlers and the reboot notifier
*/
static int __init
wdrtas_init(void)
static int __init wdrtas_init(void)
{
if (wdrtas_get_tokens())
return -ENODEV;
Expand Down Expand Up @@ -680,8 +660,7 @@ wdrtas_init(void)
*
* unregisters the file handlers and the reboot notifier
*/
static void __exit
wdrtas_exit(void)
static void __exit wdrtas_exit(void)
{
if (!wdrtas_nowayout)
wdrtas_timer_stop();
Expand Down

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