[AGPGART] Fix up sgi-agp bug with no devices on bus.

Signed-off-by: Eric Kunze <ekunze@sgi.com>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
index d3aa159c9dec..53eeb293d174 100644
--- a/drivers/char/agp/sgi-agp.c
+++ b/drivers/char/agp/sgi-agp.c
@@ -288,6 +288,8 @@ static int __devinit agp_sgi_init(void)
         j = 0;
         list_for_each_entry(info, &tioca_list, ca_list) {
                 struct list_head *tmp;
+                if (list_empty(info->ca_devices))
+                        continue;
                 list_for_each(tmp, info->ca_devices) {
                         u8 cap_ptr;
                         pdev = pci_dev_b(tmp);