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authorGrant Grundler <grundler@parisc-linux.org>2009-04-20 04:28:22 +0000
committerKyle McMartin <kyle@mcmartin.ca>2009-07-03 03:34:07 +0000
commitfed99b1e86f5ff4f1b41e37264bb869da67d3174 (patch)
treeeea44830caf663e97041dbb90a2f74cb7e28a1b3
parent7d17e2763129ea307702fcdc91f6e9d114b65c2d (diff)
parisc: advertise PCI devs after "assign_resources"
Alex Chiang asked me why PARISC was calling pci_bus_add_devices() and pci_bus_assign_resources() in the opposite order from everyone else. No reason and I couldn't see any data dependency. Patch below applies cleanly to 2.6.30-rc2. Later, I suspected the code worked only because no drivers would be loaded/ready until much later in the system initialization sequence. Tested "LBA" code on J6000 (32-bit) and A500 (64-bit SMP) with 2.6.30-rc2. Not tested with any Dino controllers. Not tested with PCI-PCI Bridge (TBD). Reported-by: Alex Chiang <achiang@hp.com> Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
-rw-r--r--drivers/parisc/dino.c10
-rw-r--r--drivers/parisc/lba_pci.c10
2 files changed, 10 insertions, 10 deletions
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index 52ae0b1d470c..d327c2dbf3e0 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -1019,22 +1019,22 @@ static int __init dino_probe(struct parisc_device *dev)
** It's not used to avoid chicken/egg problems
** with configuration accessor functions.
*/
- bus = pci_scan_bus_parented(&dev->dev, dino_current_bus,
- &dino_cfg_ops, NULL);
+ dino_dev->hba.hba_bus = bus = pci_scan_bus_parented(&dev->dev,
+ dino_current_bus, &dino_cfg_ops, NULL);
+
if(bus) {
- pci_bus_add_devices(bus);
/* This code *depends* on scanning being single threaded
* if it isn't, this global bus number count will fail
*/
dino_current_bus = bus->subordinate + 1;
pci_bus_assign_resources(bus);
+ pci_bus_add_devices(bus);
} else {
- printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (probably duplicate bus number %d)\n",
+ printk(KERN_ERR "ERROR: failed to scan PCI bus on %s (duplicate bus number %d?)\n",
dev_name(&dev->dev), dino_current_bus);
/* increment the bus number in case of duplicates */
dino_current_bus++;
}
- dino_dev->hba.hba_bus = bus;
return 0;
}
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index 59fbbf128365..f2661e1255af 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -1509,10 +1509,6 @@ lba_driver_probe(struct parisc_device *dev)
lba_bus = lba_dev->hba.hba_bus =
pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start,
cfg_ops, NULL);
- if (lba_bus) {
- lba_next_bus = lba_bus->subordinate + 1;
- pci_bus_add_devices(lba_bus);
- }
/* This is in lieu of calling pci_assign_unassigned_resources() */
if (is_pdc_pat()) {
@@ -1533,7 +1529,6 @@ lba_driver_probe(struct parisc_device *dev)
}
pci_enable_bridges(lba_bus);
-
/*
** Once PCI register ops has walked the bus, access to config
** space is restricted. Avoids master aborts on config cycles.
@@ -1543,6 +1538,11 @@ lba_driver_probe(struct parisc_device *dev)
lba_dev->flags |= LBA_FLAG_SKIP_PROBE;
}
+ if (lba_bus) {
+ lba_next_bus = lba_bus->subordinate + 1;
+ pci_bus_add_devices(lba_bus);
+ }
+
/* Whew! Finally done! Tell services we got this one covered. */
return 0;
}

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