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[WATCHDOG 12/57] ib700wdt: clean up and switch to unlocked_ioctl

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Review and switch to unlocked_ioctl

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Alan Cox 2008-05-19 14:05:52 +01:00 committed by Wim Van Sebroeck
parent 6513e2a038
commit 2e43ba73d4
1 changed files with 52 additions and 51 deletions
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103
drivers/watchdog/ib700wdt.c
View file

@ -42,8 +42,8 @@
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/io.h>
#include <linux/uaccess.h>
#include <asm/system.h>
static struct platform_device *ibwdt_platform_device;
@ -120,7 +120,9 @@ static int wd_margin = WD_TIMO;
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
@ -165,8 +167,8 @@ ibwdt_set_heartbeat(int t)
* /dev/watchdog handling
*/
static ssize_t
ibwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
static ssize_t ibwdt_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
if (count) {
if (!nowayout) {
@ -188,77 +190,71 @@ ibwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppo
return count;
}
static int
ibwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
static long ibwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int new_margin;
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
| WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "IB700 WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
break;
if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
return put_user(0, p);
case WDIOC_KEEPALIVE:
ibwdt_ping();
break;
ibwdt_ping();
break;
case WDIOC_SETTIMEOUT:
if (get_user(new_margin, p))
return -EFAULT;
if (ibwdt_set_heartbeat(new_margin))
return -EINVAL;
ibwdt_ping();
/* Fall */
if (get_user(new_margin, p))
return -EFAULT;
if (ibwdt_set_heartbeat(new_margin))
return -EINVAL;
ibwdt_ping();
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(wd_times[wd_margin], p);
return put_user(wd_times[wd_margin], p);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
int options, retval = -EINVAL;
if (get_user(options, p))
return -EFAULT;
if (get_user(options, p))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
ibwdt_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
ibwdt_ping();
retval = 0;
}
return retval;
if (options & WDIOS_DISABLECARD) {
ibwdt_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
ibwdt_ping();
retval = 0;
}
return retval;
}
default:
return -ENOTTY;
return -ENOTTY;
}
return 0;
}
static int
ibwdt_open(struct inode *inode, struct file *file)
static int ibwdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &ibwdt_is_open)) {
if (test_and_set_bit(0, &ibwdt_is_open))
return -EBUSY;
}
if (nowayout)
__module_get(THIS_MODULE);
@ -273,7 +269,8 @@ ibwdt_close(struct inode *inode, struct file *file)
if (expect_close == 42) {
ibwdt_disable();
} else {
printk(KERN_CRIT PFX "WDT device closed unexpectedly. WDT will not stop!\n");
printk(KERN_CRIT PFX
"WDT device closed unexpectedly. WDT will not stop!\n");
ibwdt_ping();
}
clear_bit(0, &ibwdt_is_open);
@ -289,7 +286,7 @@ static const struct file_operations ibwdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ibwdt_write,
.ioctl = ibwdt_ioctl,
.unlocked_ioctl = ibwdt_ioctl,
.open = ibwdt_open,
.release = ibwdt_close,
};
@ -310,21 +307,23 @@ static int __devinit ibwdt_probe(struct platform_device *dev)
#if WDT_START != WDT_STOP
if (!request_region(WDT_STOP, 1, "IB700 WDT")) {
printk (KERN_ERR PFX "STOP method I/O %X is not available.\n", WDT_STOP);
printk(KERN_ERR PFX "STOP method I/O %X is not available.\n",
WDT_STOP);
res = -EIO;
goto out_nostopreg;
}
#endif
if (!request_region(WDT_START, 1, "IB700 WDT")) {
printk (KERN_ERR PFX "START method I/O %X is not available.\n", WDT_START);
printk(KERN_ERR PFX "START method I/O %X is not available.\n",
WDT_START);
res = -EIO;
goto out_nostartreg;
}
res = misc_register(&ibwdt_miscdev);
if (res) {
printk (KERN_ERR PFX "failed to register misc device\n");
printk(KERN_ERR PFX "failed to register misc device\n");
goto out_nomisc;
}
return 0;
@ -342,9 +341,9 @@ out_nostopreg:
static int __devexit ibwdt_remove(struct platform_device *dev)
{
misc_deregister(&ibwdt_miscdev);
release_region(WDT_START,1);
release_region(WDT_START, 1);
#if WDT_START != WDT_STOP
release_region(WDT_STOP,1);
release_region(WDT_STOP, 1);
#endif
return 0;
}
@ -369,13 +368,15 @@ static int __init ibwdt_init(void)
{
int err;
printk(KERN_INFO PFX "WDT driver for IB700 single board computer initialising.\n");
printk(KERN_INFO PFX
"WDT driver for IB700 single board computer initialising.\n");
err = platform_driver_register(&ibwdt_driver);
if (err)
return err;
ibwdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
ibwdt_platform_device = platform_device_register_simple(DRV_NAME,
-1, NULL, 0);
if (IS_ERR(ibwdt_platform_device)) {
err = PTR_ERR(ibwdt_platform_device);
goto unreg_platform_driver;