Add hotplug support for Micron's PCIe-SSD devices

[Jose De la Rosa]

Add hotplug (SRSI) support for Micron's PCIe-SSD devices (mtip32xx driver).

The patches that enable this functionality have been submitted to the linux-block mailing list:

http://marc.info/?l=linux-kernel&m=136812385512296

Micron has been in direct conversations with Jens Axboe to merge these patches upstream, as far as I know there are no objections from the community and should just be a matter of time before they are merged upstream. They may not land in kernel 3.11, probably looking at 3.12.

I tested these patches with the 3.10.2 kernel and both hot-removal and hot-insertion work ok. I had to pass the pci=pcie_bus_perf kernel parameter to avoid MaxPayload issues.

Adding support in Saucy will pave the way for established support in the 14.04 LTS release.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1206602

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Kent Baxley (kentb)]

This is a request to consider adding a new feature to the mptip32xx driver. There's no bug or breakage at this time.

[Kent Baxley (kentb)]

SRSI Support was added to the upstream kernel in November 2013. The Ubuntu Trusty kernels got this support for 'free'.

Checked the source code for Trusty to verify it was there:

http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-trusty.git;a=commitdiff;h=8f8b899563f28ef26e381a6eb90d12dead77389f

Closing out as fix released.