tree 5b9eccb9a9cc55b5ca8c6cdba266e2cdd4727952
parent ec07a053597bdab51cbd23619f9f9f392712508a
author Kashyap, Desai <kashyap.desai@lsi.com> 1294121319 +0530
committer James Bottomley <James.Bottomley@suse.de> 1295882880 -0600

[SCSI] mpt2sas: Kernel Panic during Large Topology discovery 

There was a configuration page timing out during the initial port
enable at driver load time. The port enable would fail, and this would
result in the driver unloading itself, meanwhile the driver was accessing
freed memory in another context resulting in the panic.  The fix is to
prevent access to freed memory once the driver had issued the diag reset
which woke up the sleeping port enable process.  The routine
_base_reset_handler was reorganized so the last sleeping process woken up was
the port_enable.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Cc: stable@kernel.org
Signed-off-by: James Bottomley <James.Bottomley@suse.de>