This patch series brings in
1) A common debugfs base directory i.e. /sys/kernel/debugfs/wwan/
in WWAN Subsystem for a WWAN device instance.

2) And support for Device trace collection in IOSM Diver using relayfs
interface.

Changes since v0:
PATCH1:
  * Changes in WWAN Subsystem to support common debugfs base directory.
PATCH2:
  * IOSM Driver adaption to get WWAN device dentry.
  * Removed unnecessary checks.

M Chetan Kumar (2):
  net: wwan: common debugfs base dir for wwan device
  net: wwan: iosm: device trace collection using relayfs

 drivers/net/wwan/iosm/Makefile            |   3 +-
 drivers/net/wwan/iosm/iosm_ipc_imem.c     |  13 ++
 drivers/net/wwan/iosm/iosm_ipc_imem.h     |   2 +
 drivers/net/wwan/iosm/iosm_ipc_imem_ops.c |  31 +++-
 drivers/net/wwan/iosm/iosm_ipc_imem_ops.h |   9 +-
 drivers/net/wwan/iosm/iosm_ipc_port.c     |   2 +-
 drivers/net/wwan/iosm/iosm_ipc_trace.c    | 174 ++++++++++++++++++++++
 drivers/net/wwan/iosm/iosm_ipc_trace.h    |  51 +++++++
 drivers/net/wwan/wwan_core.c              |  35 ++++-
 include/linux/wwan.h                      |   2 +
 10 files changed, 307 insertions(+), 15 deletions(-)
 create mode 100644 drivers/net/wwan/iosm/iosm_ipc_trace.c
 create mode 100644 drivers/net/wwan/iosm/iosm_ipc_trace.h

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2.25.1