* [PATCH v3 0/2] rsxx: RSXX driver Bug fixes.
@ 2013-09-04 18:58 Philip J. Kelleher
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From: Philip J. Kelleher @ 2013-09-04 18:58 UTC (permalink / raw)
To: axboe; +Cc: linux-kernel, brking
The incoming patch series contains 2 patches for the
rsxx driver (drivers/block/rsxx).
Version 1:
A patch series containing 5 patches was sent out a few
weeks ago.
Version 2:
o This version decreased the number of patches for the patch
series based on importance.
o Started using the function pci_dma_mapping_error to check
the return status of pci_map_page.
Version 3:
o Fixes a compile error in patch 1.
o Changed the error handling for pci_map_page
to cancel all dmas instead of just returning
out.
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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