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authorTakashi Iwai2010-12-13 09:29:52 +0100
committerTakashi Iwai2010-12-13 09:29:52 +0100
commit354d14b3f53cc749c5d26d4ba7280d1e931d6bc4 (patch)
tree59b597e44902d8db8bde7deac1e7e707327c6fe6 /drivers/pci/hotplug/ibmphp_ebda.c
parentALSA: aoa: Remove wrong i2c_set_clientdata in onyx_i2c_remove() (diff)
parentsound: don't use flush_scheduled_work() (diff)
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Merge branch 'topic/workq-update' into topic/misc
Diffstat (limited to 'drivers/pci/hotplug/ibmphp_ebda.c')
-rw-r--r--drivers/pci/hotplug/ibmphp_ebda.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
index 5becbdee4027..2850e64dedae 100644
--- a/drivers/pci/hotplug/ibmphp_ebda.c
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -276,6 +276,12 @@ int __init ibmphp_access_ebda (void)
for (;;) {
offset = next_offset;
+
+ /* Make sure what we read is still in the mapped section */
+ if (WARN(offset > (ebda_sz * 1024 - 4),
+ "ibmphp_ebda: next read is beyond ebda_sz\n"))
+ break;
+
next_offset = readw (io_mem + offset); /* offset of next blk */
offset += 2;