[PATCH 00/13] remoteproc: Add support for detaching from rproc

[Mathieu Poirier]

Following the work done here [1] this set provides support for the
remoteproc core to release resources associated with a remote processor
without having to switch it off. That way a platform driver can be removed
or the applcation processor power cycled while the remote processor is
still operating.

I have not tested the solution because of the work involved in getting
a new firmware image to support the feature.  I will do so once it is
determined that this is the right approach to follow.

Applies cleanly on rproc-next (62b8f9e99329)

Thanks,
Mathieu 

[1]. https://lkml.org/lkml/2020/7/14/1600

Mathieu Poirier (13):
  remoteproc: Re-check state in rproc_shutdown()
  remoteproc: Remove useless check in rproc_del()
  remoteproc: Add new RPROC_ATTACHED state
  remoteproc: Properly represent the attached state
  remoteproc: Add new detach() remoteproc operation
  remoteproc: Introduce function __rproc_detach()
  remoteproc: Introduce function rproc_detach()
  remoteproc: Rename function rproc_actuate()
  remoteproc: Add return value to function rproc_shutdown()
  remoteproc: Properly deal with a stop request when attached
  remoteproc: Properly deal with detach request
  remoteproc: Refactor rproc delete and cdev release path
  remoteproc: Properly deal with a kernel panic when attached

 drivers/remoteproc/remoteproc_cdev.c  |  18 ++-
 drivers/remoteproc/remoteproc_core.c  | 151 +++++++++++++++++++++-----
 drivers/remoteproc/remoteproc_sysfs.c |  17 ++-
 include/linux/remoteproc.h            |  14 ++-
 4 files changed, 157 insertions(+), 43 deletions(-)

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2.25.1