A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 19:21:31 -04:00
Code Issues Projects Releases Packages Wiki Activity

watchdog: Drop pointer to watchdog device from struct watchdog_device

Browse source 
The lifetime of the watchdog device pointer is different from the lifetime
of its character device. Remove it entirely to avoid race conditions.

Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
This commit is contained in:
Guenter Roeck 2016-01-03 15:11:58 -08:00 • committed by Wim Van Sebroeck
commit 0254e95353
4 changed files with 8 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/watchdog/watchdog_core.c
View file

@ -249,8 +249,8 @@ static int __watchdog_register_device(struct watchdog_device *wdd)
ret = register_reboot_notifier(&wdd->reboot_nb);
if (ret) {
dev_err(wdd->dev, "Cannot register reboot notifier (%d)\n",
ret);
pr_err("watchdog%d: Cannot register reboot notifier (%d)\n",
wdd->id, ret);
watchdog_dev_unregister(wdd);
ida_simple_remove(&watchdog_ida, wdd->id);
return ret;
@ -262,8 +262,8 @@ static int __watchdog_register_device(struct watchdog_device *wdd)
ret = register_restart_handler(&wdd->restart_nb);
if (ret)
dev_warn(wdd->dev, "Cannot register restart handler (%d)\n",
ret);
pr_warn("watchog%d: Cannot register restart handler (%d)\n",
wdd->id, ret);
}
return 0;

9
drivers/watchdog/watchdog_dev.c
View file

@ -143,7 +143,8 @@ static int watchdog_stop(struct watchdog_device *wdd)
return 0;
if (test_bit(WDOG_NO_WAY_OUT, &wdd->status)) {
dev_info(wdd->dev, "nowayout prevents watchdog being stopped!\n");
pr_info("watchdog%d: nowayout prevents watchdog being stopped!\n",
wdd->id);
return -EBUSY;
}
@ -604,7 +605,7 @@ static int watchdog_release(struct inode *inode, struct file *file)
/* If the watchdog was not stopped, send a keepalive ping */
if (err < 0) {
dev_crit(wdd->dev, "watchdog did not stop!\n");
pr_crit("watchdog%d: watchdog did not stop!\n", wdd->id);
watchdog_ping(wdd);
}
@ -751,7 +752,6 @@ int watchdog_dev_register(struct watchdog_device *wdd)
watchdog_cdev_unregister(wdd);
return PTR_ERR(dev);
}
wdd->dev = dev;
return ret;
}
@ -766,8 +766,7 @@ int watchdog_dev_register(struct watchdog_device *wdd)
void watchdog_dev_unregister(struct watchdog_device *wdd)
{
device_destroy(&watchdog_class, wdd->dev->devt);
wdd->dev = NULL;
device_destroy(&watchdog_class, wdd->wd_data->cdev.dev);
watchdog_cdev_unregister(wdd);
}