[PATCH] IPMI: Add PPC openfirmware unregister

[Corey Minyard]

From: Christian Krafft <krafft@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Corey Minyard <minyard@xxxxxxx>

Index: linux-2.6.21/drivers/char/ipmi/ipmi_si_intf.c
===================================================================
--- linux-2.6.21.orig/drivers/char/ipmi/ipmi_si_intf.c
+++ linux-2.6.21/drivers/char/ipmi/ipmi_si_intf.c
@@ -2924,6 +2924,10 @@ 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;


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