linux-kernel - [PATCH v2 0/4] devres: dma-mapping: Introducing new functions

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Date:	Sun,  1 Jun 2014 10:01:13 +0300
From:	Eli Billauer <eli.billauer@...il.com>
To:	tj@...nel.org
Cc:	devel@...verdev.osuosl.org, gregkh@...uxfoundation.org,
	bhelgaas@...gle.com, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, shuah.kh@...sung.com,
	iommu@...ts.linux-foundation.org, discuss@...-64.org,
	Eli Billauer <eli.billauer@...il.com>
Subject: [PATCH v2 0/4] devres: dma-mapping: Introducing new functions

This patchset consists of new functions to the managed device resource
API, followed by a patch for the Xillybus driver, which is my motivation
and what I tested with.

This is a resubmission after changing the API slightly.

Rationale: While migrating the staging/xillybus driver to rely completely on
managed resources, some functionalities were missing, and hence added:

* dmam_map_single()
* dmam_unmap_single()
* pcim_map_single()
* pcim_unmap_single()

Tejun suggested that dma_map_single_attrs() should have a managed version as
well. The second patch in this set turns dmam_map_single() into
dma_map_single_attrs(), and implements the former as a macro. Functions added:

* dmam_map_single_attrs()
* dmam_unmap_single_attrs()

Xillybus' driver works with and without this patch (depends on patches #1 and #3
only).

Thanks,
   Eli

Eli Billauer (4):
  dma-mapping: Add devm_ interface for dma_map_single()
  dma-mapping: Add devm_ interface for dma_map_single_attrs()
  dma-mapping: pci: Add devm_ interface for pci_map_single
  staging: xillybus: Use devm_ API for memory allocation and DMA
    mapping

 Documentation/driver-model/devres.txt    |    6 +
 drivers/base/dma-mapping.c               |  106 +++++++++++++++++
 drivers/staging/xillybus/xillybus.h      |   38 +------
 drivers/staging/xillybus/xillybus_core.c |  186 +++++++++---------------------
 drivers/staging/xillybus/xillybus_of.c   |   61 +---------
 drivers/staging/xillybus/xillybus_pcie.c |   54 ++--------
 include/asm-generic/dma-mapping-common.h |    3 +
 include/asm-generic/pci-dma-compat.h     |   18 +++
 include/linux/dma-mapping.h              |    8 +-
 9 files changed, 214 insertions(+), 266 deletions(-)

-- 
1.7.2.3

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