linux-kernel - [PATCH v2 0/2] rsxx: RSXX driver Bug fixes.

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Message-ID: <20130827225703.GA7368@oc6784271780.ibm.com>
Date:	Tue, 27 Aug 2013 17:57:03 -0500
From:	"Philip J. Kelleher" <pjk1939@...ux.vnet.ibm.com>
To:	axboe@...nel.dk
Cc:	linux-kernel@...r.kernel.org, brking@...ux.vnet.ibm.com
Subject: [PATCH v2 0/2] rsxx: RSXX driver Bug fixes.

The incoming patch series contains 2 patches for the
rsxx driver (drivers/block/rsxx). I sent a patch series
containing 5 patches a couple weeks ago, which contained
version 1 of the this series.

Version 2 changes:
o Patches 3 thru 5 were removed because of importance.
o pci_dma_mapping_error was added to check the return
  status of pci_map_page.

Patch 1:
	The driver wasn't handling the return value
	of pci_map_page correctly for the PowerPC
	architecture. This also uncovered a double
	free scenario that is fixed here.

Patch 2:
	In this patch, the pci_map_page function has
	been moved into our issued workqueue to prevent
	an us running out of mappable addresses on non-
	HWWD PCIe x8 slots. The maximum amount that
	can possible be mapped at one time now is:
	255 dmas X 4 dma channels X 4096 Bytes.

Regards,
- Philip Kelleher

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