[V5,0/5] Add chrdev and name query support for GLINK

Message

Arun Kumar Neelakantam Nov. 22, 2019, 10:05 a.m. UTC

Add support for the GLINK rpmsg transport to register a rpmsg chrdev.
This will create the rpmsg_ctrl nodes for userspace clients to open 
rpmsg epts. The rpmsg chrdev allocation is done by allocating a local
channel which also allocates an ept. We need to add some guards against
edge cases for this chrdev because it will never fully open.

Changes since v4:
- Resending by removing approved patches

Changes since v3:
- Change to device_add_group for rpmsg name attr
- Add patch to unregister the rpmsg device
- Add patch to support compat ioctl for rpmsg char driver

Changes since v2:
- Revert change to make glink attribute table const

Changes since v1:
- Add explanation to dt-bindings commit message
- Add patch complete_all the open_req/ack variables
- Add patch to prevent null pointer dereference in chrdev channel release
- Change chrdev allocation to use glink channel allocation
- Change glink attr struct to const


Arun Kumar Neelakantam (1):
  rpmsg: glink: unregister rpmsg device during endpoint destroy

Chris Lew (4):
  rpmsg: glink: Use complete_all for open states
  rpmsg: Guard against null endpoint ops in destroy
  rpmsg: glink: Add support for rpmsg glink chrdev
  rpmsg: glink: Expose rpmsg name attr for glink

 drivers/rpmsg/qcom_glink_native.c | 79 +++++++++++++++++++++++++++++++++++++--
 drivers/rpmsg/rpmsg_core.c        |  2 +-
 2 files changed, 77 insertions(+), 4 deletions(-)