powerpc/chrp: Fix detection of Python PCI host bridge on IBM CHRPs

The detection of the IBM "Python" PCI host bridge on IBM CHRP
machines such as old RS6000 was broken when we changed
of_device_is_compatible() from strncasecmp to strcasecmp (dropped
the "n" variant) due to the way IBM encodes the chip version.

We fix that by instead doing a match on the model property like
we do for others bridges in that file. It should be good enough
for those machines. If yours is still broken, let me know.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/chrp/pci.c b/arch/powerpc/platforms/chrp/pci.c
index 768c262b936891eeaebb361a1c2612e8ef429588..68e49b24df947825be218a11dc52d603a94ba322 100644 (file)
--- a/arch/powerpc/platforms/chrp/pci.c
+++ b/arch/powerpc/platforms/chrp/pci.c
@@ -266,7 +266,7 @@ chrp_find_bridges(void)
                model = of_get_property(dev, "model", NULL);
                if (model == NULL)
                        model = "<none>";
-               if (of_device_is_compatible(dev, "IBM,python")) {
+               if (strncmp(model, "IBM, Python", 11) == 0) {
                        setup_python(hose, dev);
                } else if (is_mot
                           || strncmp(model, "Motorola, Grackle", 17) == 0) {