litmus-rt-ext-res.git/drivers/dma/sh, branch EXT-RES

dmaengine: rcar-dmac: unmap slave resource when channel is freed

2017-01-26T07:24:45+00:00

commit 3139dc8ded6f27552a248d23fe9f086e3027fa12 upstream.

The slave mapping should be removed together with other channel
resources when the channel is freed. If it's not unmapped it will hang
around forever after the channel is freed.

Fixes: 9f878603dbdb7db3 ("dmaengine: rcar-dmac: add iommu support for slave transfers")
Reported-by: Laurent Pinchart 
Signed-off-by: Niklas Söderlund 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma

2016-10-07T00:13:54+00:00

Pull dmaengine updates from Vinod Koul:
 "This is bit large pile of code which bring in some nice additions:

   - Error reporting: we have added a new mechanism for users of
     dmaenegine to register a callback_result which tells them the
     result of the dma transaction. Right now only one user (ntb) is
     using it.

   - As we discussed on KS mailing list and pointed out NO_IRQ has no
     place in kernel, this also remove NO_IRQ from dmaengine subsystem
     (both arm and ppc users)

   - Support for IOMMU slave transfers and its implementation for arm.

   - To get better build coverage, enable COMPILE_TEST for bunch of
     driver, and fix the warning and sparse complaints on these.

   - Apart from above, usual updates spread across drivers"

* tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (169 commits)
  async_pq_val: fix DMA memory leak
  dmaengine: virt-dma: move function declarations
  dmaengine: omap-dma: Enable burst and data pack for SG
  DT: dmaengine: rcar-dmac: document R8A7743/5 support
  dmaengine: fsldma: Unmap region obtained by of_iomap
  dmaengine: jz4780: fix resource leaks on error exit return
  dma-debug: fix ia64 build, use PHYS_PFN
  dmaengine: coh901318: fix integer overflow when shifting more than 32 places
  dmaengine: edma: avoid uninitialized variable use
  dma-mapping: fix m32r build warning
  dma-mapping: fix ia64 build, use PHYS_PFN
  dmaengine: ti-dma-crossbar: enable COMPILE_TEST
  dmaengine: omap-dma: enable COMPILE_TEST
  dmaengine: edma: enable COMPILE_TEST
  dmaengine: ti-dma-crossbar: Fix of_device_id data parameter usage
  dmaengine: ti-dma-crossbar: Correct type for of_find_property() third parameter
  dmaengine/ARM: omap-dma: Fix the DMAengine compile test on non OMAP configs
  dmaengine: edma: Rename set_bits and remove unused clear_bits helper
  dmaengine: edma: Use correct type for of_find_property() third parameter
  dmaengine: edma: Fix of_device_id data parameter usage (legacy vs TPCC)
  ...

Merge branch 'topic/iommu' into for-linus

2016-10-03T03:48:06+00:00

dmaengine: rcar-dmac: add iommu support for slave transfers

2016-09-26T16:46:41+00:00

Enable slave transfers to a device behind a IPMMU by mapping the slave
addresses using the dma-mapping API.

Signed-off-by: Niklas Söderlund 
Acked-by: Arnd Bergmann 
Signed-off-by: Vinod Koul

dmaengine: rcar-dmac: group slave configuration

2016-09-26T16:46:41+00:00

Group slave address and transfer size in own structs for source and
destination. This is in preparation for hooking up the dma-mapping API
to the slave addresses.

Signed-off-by: Niklas Söderlund 
Reviewed-by: Laurent Pinchart 
Acked-by: Arnd Bergmann 
Signed-off-by: Vinod Koul

dmaengine: usb-dmac: check CHCR.DE bit in usb_dmac_isr_channel()

2016-08-08T08:12:06+00:00

The USB-DMAC's interruption happens even if the CHCR.DE is not set to 1
because CHCR.NULLE is set to 1. So, this driver should call
usb_dmac_isr_transfer_end() if the DE bit is set to 1 only. Otherwise,
the desc is possible to be NULL in the usb_dmac_isr_transfer_end().

Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver)
Cc:  # v4.1+
Signed-off-by: Yoshihiro Shimoda 
Signed-off-by: Vinod Koul

dmaengine: sh_shdma-base: convert callback to helper function

2016-08-08T02:41:43+00:00

This is in preperation of moving to a callback that provides results to the
callback for the transaction. The conversion will maintain current behavior
and the driver must convert to new callback mechanism at a later time in
order to receive results.

Signed-off-by: Dave Jiang 
Signed-off-by: Vinod Koul

dmaengine: sh_rcar-dmac: convert callback to helper function

2016-08-08T02:41:41+00:00

This is in preperation of moving to a callback that provides results to the
callback for the transaction. The conversion will maintain current behavior
and the driver must convert to new callback mechanism at a later time in
order to receive results.

Signed-off-by: Dave Jiang 
Reviewed-by: Lars-Peter Clausen 
Signed-off-by: Vinod Koul

Merge branch 'topic/sh' into for-linus

2016-07-16T14:40:17+00:00

dmaengine: rcar-dmac: Fix residue reporting for pending descriptors

2016-07-08T05:39:10+00:00

Cookies corresponding to pending transfers have a residue value equal to
the full size of the corresponding descriptor. The driver miscomputes
that and uses the size of the active descriptor instead. Fix it.

Reported-by: Geert Uytterhoeven 
Signed-off-by: Laurent Pinchart 
[geert: Also check desc.active list]
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Niklas Söderlund 
Signed-off-by: Vinod Koul