[PATCH 0/5] IPU reset workaround changes

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Hi folks,

Maybe I should have labelled these as RFC instead... this set reworks based on
what the ISYS is reset and how that affects UAPI.

It seems there are some issues on IPU7; at times (around once in a few hundred
cases) streaming with yavta results capturing a single frame only and an ISYS
power reset is needed to recover from that. No reboot (or driver reload) is
needed with these patches though.

Similarly with these, an ISYS reset is avoided in regular streaming cases for 
IPU7. 

Comments are welcome (as always).

Sakari Ailus (5):
  media: ipu6: Don't mark need_reset based on returned buffers
  media: ipu6: Tell about not being able to obtain frame descriptor
  media: ipu6: Prevent starting streaming if ISYS needs reset
  media: ipu6: Remove need_reset check from video device open
  media: ipu6: Return errors from stream stop and close

 drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c |  6 +-
 .../media/pci/intel/ipu6/ipu6-isys-queue.c    | 16 ++--
 .../media/pci/intel/ipu6/ipu6-isys-video.c    | 74 +++++++++++--------
 .../media/pci/intel/ipu6/ipu6-isys-video.h    |  4 +-
 4 files changed, 53 insertions(+), 47 deletions(-)


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2.47.3