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path: root/drivers/char/ipmi/ipmi_powernv.c
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2015-09-03impi:Remove unneeded setting of module owner to THIS_MODULE in the platform ↵Nicholas Krause1-1/+0
structure, powernv_ipmi_driver This removes the no longer required setting of the module owner for the plaform structure,powernv_ipmi_driver to THIS_MODULE as the driver core for ipmi drivers will directly find and set the module owner for this driver. Signed-off-by: Nicholas Krause <xerofoify@gmail.com> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2015-09-03ipmi/powernv: Fix potential invalid pointer dereferenceNeelesh Gupta1-1/+8
If the OPAL call to receive the ipmi message fails, then we free up the smi message and return. But, the driver still holds the reference to old smi message in the 'cur_msg' which can potentially be accessed later and freed again leading to kernel oops. To fix it up, The kernel driver should reset the 'cur_msg' and send reply to the user in addition to freeing the message. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Fixed a checkpatch warning dealing with an else after a return. Signed-off-by: Corey Minyard <cminyard@mvista.com>
2015-05-22ipmi/powernv: Convert to irq event interfaceAlistair Popple1-17/+22
Convert the opal ipmi driver to use the new irq interface for events. Signed-off-by: Alistair Popple <alistair@popple.id.au> Acked-by: Corey Minyard <cminyard@mvista.com> Cc: Corey Minyard <minyard@acm.org> Cc: openipmi-developer@lists.sourceforge.net Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-04-11ipmi/powernv: Fix minor locking bugAlistair Popple1-0/+1
If ipmi_powernv_recv(...) is called without a current message it prints a warning and returns. However it fails to release the message lock causing the system to dead lock during any subsequent IPMI operations. This error path should never normally be taken unless there are bugs elsewhere in the system. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Corey Minyard <cminyard@mvista.com>
2014-12-12drivers/char/ipmi: Add powernv IPMI driverJeremy Kerr1-0/+310
This change adds an initial IPMI driver for powerpc OPAL firmware. The interface is exposed entirely through firmware: we have two functions to send and receive IPMI messages, and an interrupt notification from the firmware to signify that a message is available. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Corey Minyard <cminyard@mvista.com>