[v6,0/4] user space client interface driver

Message

Hemant Kumar Sept. 16, 2020, 7:56 p.m. UTC

V6:
- Moved uci.c to mhi directory.
- Updated Kconfig to add module information.
- Updated Makefile to rename uci object file name as mhi_uci
- Removed kref for open count

V5:
- Removed mhi_uci_drv structure.
- Used idr instead of creating global list of uci devices.
- Used kref instead of local ref counting for uci device and
  open count.
- Removed unlikely macro.

V4:
- Fix locking to protect proper struct members.
- Updated documentation describing uci client driver use cases.
- Fixed uci ref counting in mhi_uci_open for error case.
- Addressed style related review comments.

V3: Added documentation for MHI UCI driver.

V2: Added mutex lock to prevent multiple readers to access same
mhi buffer which can result into use after free.

Hemant Kumar (4):
  bus: mhi: core: Add helper API to return number of free TREs
  bus: mhi: core: Move MHI_MAX_MTU to external header file
  docs: Add documentation for userspace client interface
  bus: mhi: Add userspace client interface driver

 Documentation/mhi/index.rst     |   1 +
 Documentation/mhi/uci.rst       |  39 +++
 drivers/bus/mhi/Kconfig         |  13 +
 drivers/bus/mhi/Makefile        |   4 +
 drivers/bus/mhi/core/internal.h |   1 -
 drivers/bus/mhi/core/main.c     |  12 +
 drivers/bus/mhi/uci.c           | 657 ++++++++++++++++++++++++++++++++++++++++
 include/linux/mhi.h             |  12 +
 8 files changed, 738 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/mhi/uci.rst
 create mode 100644 drivers/bus/mhi/uci.c

Comments

Christoph Hellwig Sept. 17, 2020, 8:47 a.m. UTC | #1

"user space client interface driver" is a very generic and there is
absolutel no explanation in this cover letter.  What is this supposed
to be?