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