Commit c0df975f authored Aug 21, 2014 by Joerg Roedel

iommu/vt-d: Check return value of acpi_bus_get_device()



Checking adev == NULL is not sufficient as
acpi_bus_get_device() might not touch the value of this
parameter in an error case, so check the return value
directly.

Fixes: ed40356b
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>

parent c4a783b8

drivers/iommu/dmar.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -678,8 +678,7 @@ static int __init dmar_acpi_dev_scope_init(void)
		andd->device_name);
		continue;
		}
		acpi_bus_get_device(h, &adev);
		if (!adev) {
		if (acpi_bus_get_device(h, &adev)) {
		pr_err("Failed to get device for ACPI object %s\n",
		andd->device_name);
		continue;