On Wed, Jul 08, 2015 at 11:17:47AM +0530, Nagarajkumar Narayanan wrote:
Note: pci_access_mutex is used only if nytro warpdrive cards
(ioc-is_warpdrive based on device id) are used
as we could not test this case with other SAS2 HBA cards
We can remove this check if this behaviour confirmed
Patch Description:
In mpt2sas driver due to lack of synchronization between ioctl,
BRM status access through sysfs, pci resource removal kernel oops
happen as ioctl path and BRM status sysfs access path still tries
to access the removed resources
kernel: BUG: unable to handle kernel paging
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