[SCSI] gdth: fix Error: Driver 'gdth' is already registered, aborting...
This message appears on modprobe/rmmod/modprobe of the driver. It's
caused because if the driver has no instances, it returns an error
from gdth_init, which causes the module to fail to load.
Unfortunately, the module's pci driver is still registered at this
point.
Fix this by making gdth behave like a modern driver and insert even if
it doesn't find any instances (in case of hot plug or software driven
binding).
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 16785a2..46771d4 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -550,7 +550,6 @@
#endif /* CONFIG_ISA */
#ifdef CONFIG_PCI
-static bool gdth_pci_registered;
static bool gdth_search_vortex(ushort device)
{
@@ -5157,8 +5156,13 @@
#ifdef CONFIG_PCI
/* scanning for PCI controllers */
- if (pci_register_driver(&gdth_pci_driver) == 0)
- gdth_pci_registered = true;
+ if (pci_register_driver(&gdth_pci_driver)) {
+ gdth_ha_str *ha;
+
+ list_for_each_entry(ha, &gdth_instances, list)
+ gdth_remove_one(ha);
+ return -ENODEV;
+ }
#endif /* CONFIG_PCI */
TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
@@ -5181,8 +5185,7 @@
#endif
#ifdef CONFIG_PCI
- if (gdth_pci_registered)
- pci_unregister_driver(&gdth_pci_driver);
+ pci_unregister_driver(&gdth_pci_driver);
#endif
list_for_each_entry(ha, &gdth_instances, list)