[PATCHv4 0/2] cppi41 dma fixes for v4.10-rc cycle

[Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>]

Hi all,

I'm using v4 naming here as the earlier patch "dmaengine: cppi41: Add dma
support to da8xx" has been separated from the error -115 issue. We've
identified so far three musb and cppi41 regressions:

1. Error -71 regression with musb

   This is not dma related, and fixed with recently posted patch
   "[PATCH 1/2] usb: musb: Fix host mode error -71 regression".

2. Error -115 regression with cppi41 dma with musb

   This regression was caused by commit 098de42ad670 ("dmaengine:
   cppi41: Fix unpaired pm runtime when only a USB hub is connected")
   and causes runtime PM autosuspend delay to time out on active dma
   transfers when connecting a mass storage device to a usb hub.
   This is fixed in the first patch in this series.

3. Race with runtime PM and cppi41_dma_issue_pending()

   This is really a separate issue from the error -115 problem, and
   fixed with the second patch in this series. That's minimal v4
   version of the "dmaengine: cppi41: Fix oops in cppi41_runtime_resume"
   patch.

Regards,

Tony


Tony Lindgren (2):
  dmaengine: cppi41: Fix runtime PM timeouts with USB mass storage
  dmaengine: cppi41: Fix oops in cppi41_runtime_resume

 drivers/dma/cppi41.c | 56 ++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 41 insertions(+), 15 deletions(-)

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2.11.0
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