kernel: ssb: fallback-sprom: check bustype

host_pci is only defined when bustype is SSB_BUSTYPE_PCI.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

diff --git a/target/linux/generic/files/drivers/ssb/fallback-sprom.c b/target/linux/generic/files/drivers/ssb/fallback-sprom.c
index 65436a42ec51e9ac03bb8de067a62a4ce9bac5b7..26f0fd2f0366385818a9e27a8a3d02922b53004c 100644 (file)
--- a/target/linux/generic/files/drivers/ssb/fallback-sprom.c
+++ b/target/linux/generic/files/drivers/ssb/fallback-sprom.c
@@ -56,9 +56,14 @@ static struct list_head ssb_fbs_list = LIST_HEAD_INIT(ssb_fbs_list);
 
 int ssb_get_fallback_sprom(struct ssb_bus *bus, struct ssb_sprom *out)
 {
-       const u32 pci_bus = bus->host_pci->bus->number;
-       const u32 pci_dev = PCI_SLOT(bus->host_pci->devfn);
        struct ssb_fbs *pos;
+       u32 pci_bus, pci_dev;
+
+       if (bus->bustype != SSB_BUSTYPE_PCI)
+               return -ENOENT;
+
+       pci_bus = bus->host_pci->bus->number;
+       pci_dev = PCI_SLOT(bus->host_pci->devfn);
 
        list_for_each_entry(pos, &ssb_fbs_list, list) {
                if (pos->pci_bus != pci_bus ||