From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Mon, 6 Jun 2016 14:25:33 +0000 (+0300)
Subject: PCI / PM: check all fields in pci_set_platform_pm()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6ec39cf5cd6f77e3ff9ff1da75b758a47f939888;p=linux-beck.git

PCI / PM: check all fields in pci_set_platform_pm()

When assign new PCI platform PM operations check for all mandatory fields to
prevent NULL pointer dereference.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c8b4dbdd1bdd..badbddc683f0 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -530,8 +530,8 @@ static const struct pci_platform_pm_ops *pci_platform_pm;
 
 int pci_set_platform_pm(const struct pci_platform_pm_ops *ops)
 {
-	if (!ops->is_manageable || !ops->set_state || !ops->choose_state
-	    || !ops->sleep_wake)
+	if (!ops->is_manageable || !ops->set_state || !ops->choose_state ||
+	    !ops->sleep_wake || !ops->run_wake || !ops->need_resume)
 		return -EINVAL;
 	pci_platform_pm = ops;
 	return 0;