1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
index 9047b2714653..056b289a1e89 100644
--- a/drivers/char/agp/hp-agp.c
+++ b/drivers/char/agp/hp-agp.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/agp_backend.h>
 #include <linux/log2.h>
+#include <linux/slab.h>
 
 #include <asm/acpi-ext.h>
 
@@ -488,9 +489,8 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
         handle = obj;
         do {
                 status = acpi_get_object_info(handle, &info);
-                if (ACPI_SUCCESS(status)) {
+                if (ACPI_SUCCESS(status) && (info->valid & ACPI_VALID_HID)) {
                         /* TBD check _CID also */
-                        info->hardware_id.string[sizeof(info->hardware_id.length)-1] = '\0';
                         match = (strcmp(info->hardware_id.string, "HWP0001") == 0);
                         kfree(info);
                         if (match) {
@@ -509,6 +509,9 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret)
                 handle = parent;
         } while (ACPI_SUCCESS(status));
 
+        if (ACPI_FAILURE(status))
+                return AE_OK;   /* found no enclosing IOC */
+
         if (hp_zx1_setup(sba_hpa + HP_ZX1_IOC_OFFSET, lba_hpa))
                 return AE_OK;