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[SCSI] gdth: fix Error: Driver 'gdth' is already registered, aborting...

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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>
This commit is contained in:
James Bottomley 2008-05-04 22:35:58 -05:00
parent 2d6f0d0cd9
commit a85591fd0b
1 changed files with 8 additions and 5 deletions
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13
drivers/scsi/gdth.c
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@ -550,7 +550,6 @@ static int __init gdth_search_isa(ulong32 bios_adr)
#endif /* CONFIG_ISA */
#ifdef CONFIG_PCI
static bool gdth_pci_registered;
static bool gdth_search_vortex(ushort device)
{
@ -5157,8 +5156,13 @@ static int __init gdth_init(void)
#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 @@ static void __exit gdth_exit(void)
#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)