[GIT PULL FOR v5.1] pwc: Don't use coherent DMA buffers for ISO transfer

[GIT PULL FOR v5.1] pwc: Don't use coherent DMA buffers for ISO transfer

[Hans Verkuil]

This pull requests supersedes the previous pull request for v4.21, which didn't
make it.

It's unchanged from the previous pull request, just rebased on top of v5.0-rc1.

The "dma-direct: provide a generic implementation of DMA_ATTR_NON_CONSISTENT"
discussion is about future work to help with cases like this, so this doesn't
block merging this PR.

Regards,

	Hans

The following changes since commit 1e0d0a5fd38192f23304ea2fc2b531fea7c74247:

  media: s5p-mfc: fix incorrect bus assignment in virtual child device (2019-01-07 14:39:36 -0500)

are available in the Git repository at:

  git://linuxtv.org/hverkuil/media_tree.git tags/br-v5.1a

for you to fetch changes up to b12e0617fead5caa8448b14ded05442851d70cb4:

  MAINTAINERS: added include/trace/events/pwc.h (2019-01-08 12:48:54 +0100)

----------------------------------------------------------------
Tag branch

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Hans Verkuil (1):
      MAINTAINERS: added include/trace/events/pwc.h

Matwey V. Kornilov (2):
      media: usb: pwc: Introduce TRACE_EVENTs for pwc_isoc_handler()
      media: usb: pwc: Don't use coherent DMA buffers for ISO transfer

 MAINTAINERS                    |  1 +
 drivers/media/usb/pwc/pwc-if.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------
 include/trace/events/pwc.h     | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 122 insertions(+), 13 deletions(-)
 create mode 100644 include/trace/events/pwc.h