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authorBjorn Helgaas <bjorn.helgaas@hp.com>2009-09-21 19:28:49 +0000
committerLen Brown <len.brown@intel.com>2009-09-25 14:24:22 -0400
commitb24715027aab5e586c4ab1d035f3e543307dea69 (patch)
tree01688402d1694b42f9821e00fc6b4b0913de397f /drivers/pci
parent53cddfcc0e760d2b364878b6dadbd0c6d087cfae (diff)
ACPICA: fixup after acpi_get_object_info() change
Commit 15b8dd53f5ffa changed info->hardware_id from a static array to a pointer. If hardware_id is non-NULL, it points to a NULL-terminated string, so we don't need to terminate it explicitly. However, it may be NULL; in that case, we *can't* add a NULL terminator. This causes a NULL pointer dereference oops for devices without _HID. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> CC: Lin Ming <ming.m.lin@intel.com> CC: Bob Moore <robert.moore@intel.com> CC: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/hotplug/acpiphp_ibm.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index a9d926b7d80..e7be66dbac2 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -406,7 +406,6 @@ static acpi_status __init ibm_find_acpi_device(acpi_handle handle,
__func__, status);
return retval;
}
- info->hardware_id.string[sizeof(info->hardware_id.length) - 1] = '\0';
if (info->current_status && (info->valid & ACPI_VALID_HID) &&
(!strcmp(info->hardware_id.string, IBM_HARDWARE_ID1) ||