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platform-drivers-x86 for v4.17-4

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Fix NULL pointer dereference in asus-wmi on rfkill cleanup.
 
 The following is an automated git shortlog grouped by driver:
 
 asus-wmi:
  -  Fix NULL pointer dereference
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Merge tag 'platform-drivers-x86-v4.17-4' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver fix from Andy Shevchenko:
 "Fix NULL pointer dereference in asus-wmi on rfkill cleanup.

  The effective change is just one new condition - two lines of code.
  But it required moving one static helper function, which is why the
  diff looks a bit bigger"

* tag 'platform-drivers-x86-v4.17-4' of git://git.infradead.org/linux-platform-drivers-x86:
  platform/x86: asus-wmi: Fix NULL pointer dereference
This commit is contained in:
Linus Torvalds 2018-05-31 09:39:57 -05:00
parent 88a8676530 32ffd6e8d1
commit dd52cb8790
1 changed files with 13 additions and 10 deletions
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23
drivers/platform/x86/asus-wmi.c
View file

@ -163,6 +163,16 @@ MODULE_LICENSE("GPL");
static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
static bool ashs_present(void)
{
int i = 0;
while (ashs_ids[i]) {
if (acpi_dev_found(ashs_ids[i++]))
return true;
}
return false;
}
struct bios_args {
u32 arg0;
u32 arg1;
@ -1025,6 +1035,9 @@ static int asus_new_rfkill(struct asus_wmi *asus,
static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
{
if (asus->driver->wlan_ctrl_by_user && ashs_present())
return;
asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
@ -2121,16 +2134,6 @@ static int asus_wmi_fan_init(struct asus_wmi *asus)
return 0;
}
static bool ashs_present(void)
{
int i = 0;
while (ashs_ids[i]) {
if (acpi_dev_found(ashs_ids[i++]))
return true;
}
return false;
}
/*
* WMI Driver
*/