IPMI: Add PPC openfirmware unregister

When trying to load the ipmi_si module on a powerpc with no BMC (baseboard
management controller) the driver failes to load correctly, but doesn't
unregister itself from of_platform.  So, on a second modprobe the kernel
crashes.  This patch adds the missing unregister call.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 4769cc26880..78e1b962fe3 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -2974,6 +2974,10 @@ static __devinit int init_ipmi_si(void)
 #ifdef CONFIG_PCI
                 pci_unregister_driver(&ipmi_pci_driver);
 #endif
+
+#ifdef CONFIG_PPC_OF
+                of_unregister_platform_driver(&ipmi_of_platform_driver);
+#endif
                 driver_unregister(&ipmi_driver);
                 printk("ipmi_si: Unable to find any System Interface(s)\n");
                 return -ENODEV;