linux-toradex.git/drivers/dma/ste_dma40.c, branch v4.8-rc1

dmaengine: Remove site specific OOM error messages on kzalloc

2016-06-21T16:05:00+00:00

If kzalloc() fails it will issue it's own error message including
a dump_stack(). So remove the site specific error messages.

Signed-off-by: Peter Griffin 
Acked-by: Jon Hunter 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

dmaengine: ste_dma40: Only calculate residue if txstate exists.

2016-06-21T16:05:00+00:00

There is no point calculating the residue if there is
no txstate to store the value.

Signed-off-by: Peter Griffin 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

ste_dma40: Delete an unnecessary variable initialisation in d40_probe()

2015-12-10T03:47:10+00:00

The variable "res" will eventually be set to a resource pointer from
a call of the d40_hw_detect_init(() function.
Thus let us omit the explicit initialisation at the beginning.

Signed-off-by: Markus Elfring 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

ste_dma40: Delete another unnecessary check in d40_probe()

2015-12-10T03:47:05+00:00

A single jump label was used by the d40_probe() function in several cases
for error handling which was a bit inefficient here.

* This implementation detail could be improved by the introduction
  of another jump label.

* Remove an extra check for the variable "base".

* Omit its explicit initialisation at the beginning then.

Signed-off-by: Markus Elfring 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

ste_dma40: Delete an unnecessary check before the function call "kmem_cache_destroy"

2015-12-10T03:46:48+00:00

The kmem_cache_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

dmaengine: ste_dma40: fix a trivial typo

2015-10-24T22:45:40+00:00

s/regsiter/register/

Signed-off-by: Geliang Tang 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

dmaengine: Add an enum for the dmaengine alignment constraints

2015-08-05T05:23:52+00:00

Most drivers need to set constraints on the buffer alignment for async tx
operations. However, even though it is documented, some drivers either use
a defined constant that is not matching what the alignment variable expects
(like DMA_BUSWIDTH_* constants) or fill the alignment in bytes instead of
power of two.

Add a new enum for these alignments that matches what the framework
expects, and convert the drivers to it.

Signed-off-by: Maxime Ripard 
Signed-off-by: Vinod Koul

Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

2015-04-24T16:49:37+00:00

Pull slave-dmaengine updates from Vinod Koul:

 - new drivers for:
        - Ingenic JZ4780 controller
        - APM X-Gene controller
        - Freescale RaidEngine device
        - Renesas USB Controller

  - remove device_alloc_chan_resources dummy handlers

  - sh driver cleanups for peri peri and related emmc and asoc patches
    as well

  - fixes and enhancements spread over the drivers

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits)
  dmaengine: dw: don't prompt for DW_DMAC_CORE
  dmaengine: shdmac: avoid unused variable warnings
  dmaengine: fix platform_no_drv_owner.cocci warnings
  dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()
  dmaengine: at_xdmac: unlock spin lock before return
  dmaengine: xgene: devm_ioremap() returns NULL on error
  dmaengine: xgene: buffer overflow in xgene_dma_init_channels()
  dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'
  dmaengine: sa11x0: report slave capabilities to upper layers
  dmaengine: vdma: Fix compilation warnings
  dmaengine: fsl_raid: statify fsl_re_chan_probe
  dmaengine: Driver support for FSL RaidEngine device.
  dmaengine: xgene_dma_init_ring_mngr() can be static
  Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding
  arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes
  dmaengine: Add support for APM X-Gene SoC DMA engine driver
  dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver
  dmaengine: renesas,usb-dmac: Add device tree bindings documentation
  dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
  dmaengine: ste_dma40: fix implicit conversion
  ...

dmaengine: ste_dma40: fix implicit conversion

2015-04-01T03:40:22+00:00

The function d40_prep_sg takes the type enum dma_transfer_direction
as second last parameter. However, the memcpy calls pass DMA_NONE
which is of type enum dma_data_direction. Fix this by passing the
actual transfer direction DMA_MEM_TO_MEM.

This does not change the actual code flow since only the transfer
direction DMA_MEM_TO_DEV and DMA_DEV_TO_MEM are actually used in the
function d40_prep_sg.

Signed-off-by: Stefan Agner 
Signed-off-by: Vinod Koul

Staging: drivers: dma: Add space before (

2015-02-26T23:14:33+00:00

This patch fixes checkpatch.pl error in file ste_dma40.c
ERROR: space required before the open parenthesis '('

Signed-off-by: Dilek Uzulmez 
Signed-off-by: Greg Kroah-Hartman