From: Pawel Baldysiak <pawel.baldysiak@intel.com>
Date: Fri, 27 Feb 2015 14:45:50 +0000 (+0100)
Subject: IMSM-orom: make sure, that device list is supported
X-Git-Tag: mdadm-3.3.3~75
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f666bcc6528326c3431b013f47803db904ff65c0;p=thirdparty%2Fmdadm.git

IMSM-orom: make sure, that device list is supported

Devices list in PCI Data Structure is supported only in
3 and above revision. Make sure that this is checked.

Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/platform-intel.c b/platform-intel.c
index 9c89c20b..1e9ddcd2 100644
--- a/platform-intel.c
+++ b/platform-intel.c
@@ -227,6 +227,8 @@ struct pciExpDataStructFormat {
 	__u16 vendorID;
 	__u16 deviceID;
 	__u16 devListOffset;
+	__u16 pciDataStructLen;
+	__u8 pciDataStructRev;
 } __attribute__ ((packed));
 
 struct orom_entry *orom_entries;
@@ -319,7 +321,8 @@ static int scan(const void *start, const void *end, const void *data)
 
 	struct orom_entry *orom = add_orom(imsm_mem);
 
-	if (ptr->devListOffset) {
+	/* only PciDataStructure with revision 3 and above supports devices list. */
+	if (ptr->pciDataStructRev >= 3 && ptr->devListOffset) {
 		const __u16 *dev_list = (void *)ptr + ptr->devListOffset;
 		int i;