joel16/android_kernel_sony_msm8994_rework
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Merge git://www.linux-watchdog.org/linux-watchdog

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Pull watchdog fixes from Wim Van Sebroeck:
 "Fix a kdump issue in hpwdt and a possible NULL dereference."

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: move the dereference below the NULL test
  hpwdt: Fix kdump issue in hpwdt
This commit is contained in:
Linus Torvalds 2012-09-21 12:36:23 -07:00
commit 868f480bed
2 changed files with 5 additions and 1 deletions
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3
drivers/watchdog/hpwdt.c
View File

@ -814,6 +814,9 @@ static int __devinit hpwdt_init_one(struct pci_dev *dev,
hpwdt_timer_reg = pci_mem_addr + 0x70;
hpwdt_timer_con = pci_mem_addr + 0x72;
/* Make sure that timer is disabled until /dev/watchdog is opened */
hpwdt_stop();
/* Make sure that we have a valid soft_margin */
if (hpwdt_change_timer(soft_margin))
hpwdt_change_timer(DEFAULT_MARGIN);

3
drivers/watchdog/watchdog_core.c
View File

@ -128,11 +128,12 @@ EXPORT_SYMBOL_GPL(watchdog_register_device);
void watchdog_unregister_device(struct watchdog_device *wdd)
{
int ret;
int devno = wdd->cdev.dev;
int devno;
if (wdd == NULL)
return;
devno = wdd->cdev.dev;
ret = watchdog_dev_unregister(wdd);
if (ret)
pr_err("error unregistering /dev/watchdog (err=%d)\n", ret);