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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-09 11:34:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-09 11:34:15 -0800
commit189addce85330208bea50ea7f1483b58822e93cf (patch)
tree39455d91caa0463c7c4fdcd9c76b81e18541b29d /include/scsi/scsicam.h
parent59e8f10ac16186c226ef81937994534b28b976f4 (diff)
parent930a42ded3fede7ca3acafc9153f4f2d0f56a92c (diff)
Merge tag 'vfio-v4.10-final' of git://github.com/awilliam/linux-vfio
Pull VFIO fix from Alex Williamson: "Fix regression in attaching groups to existing container for SPAPR IOMMU backend (Alexey Kardashevskiy)" * tag 'vfio-v4.10-final' of git://github.com/awilliam/linux-vfio: vfio/spapr_tce: Set window when adding additional groups to container
Diffstat (limited to 'include/scsi/scsicam.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-02-02 13:50:49 +0000
refcounting for chan_busy array that contains the active dma transfers. Increasing the autosuspend delay won't help as that the delay could be potentially seconds, and it's best to let the USB subsystem to deal with the timeouts on errors. The earlier attempt for runtime PM was buggy as the pm_runtime_get/put() calls could get unpaired easily as they did not follow the state of the chan_busy array as described in commit 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected". Let's fix the issue by adding pm_runtime_get() to where a new transfer is added to the chan_busy array, and calls to pm_runtime_put() where chan_busy array entry is cleared. This prevents any autosuspend timeouts from happening while dma transfers are active. Fixes: 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected") Fixes: fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support") Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Bin Liu <b-liu@ti.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Patrick Titiano <ptitiano@baylibre.com> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Bin Liu <b-liu@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/uapi/xen/evtchn.h')