[PATCH 0/3] drivers base: transport component error propagation

[Gabriel Krisman Bertazi <krisman@collabora.com>]

Hi,

This small series improves error propagation on the transport component
to prevent an inconsistent state in the iscsi module.  The bug that
motivated this patch results in a hanging iscsi connection that cannot
be used or removed by userspace, since the session is in an inconsistent
state.

That said, I tested it using the TCP iscsi transport (and forcing errors
on the triggered function), which doesn't require a particularly complex
container structure, so it is not the best test for finding corner cases
on the atomic attribute_container_device trigger version.

Please let me know what you think.

Gabriel Krisman Bertazi (3):
  drivers: base: Support atomic version of
    attribute_container_device_trigger
  drivers: base: Propagate errors through the transport component
  iscsi: Fail session and connection on transport registration failure

 drivers/base/attribute_container.c  | 103 ++++++++++++++++++++++++++++
 drivers/base/transport_class.c      |  11 ++-
 drivers/scsi/scsi_transport_iscsi.c |  18 ++++-
 include/linux/attribute_container.h |   7 ++
 include/linux/transport_class.h     |   6 +-
 5 files changed, 137 insertions(+), 8 deletions(-)

-- 
2.24.1