[PATCH v5 00/20] media: Fix locking issues in rc core

[Sean Young <sean@mess.org>]

Fix issues found by Sashiko and claude, and other cleanups.

Changes since v4:
 - Split keymap locking into two commits: one for krealloc rewrite
   and one for the locking
 - Fixed meson-ir-tx: Validate carrier and duty_cycle to actually
   fix divide by zero
 - Improved commit messages
 - imon calls usb_driver_claim_interface() before using it
 - Ensure lirc_unregister() is always called with registered = false
   else any polling fds never get triggered

Changes since v3:
 - serial_ir: Fix race condition where timer can be re-armed
   This introduced a new race condition; reworked
 - rc: After rc_unregister_device() timers can be re-armed
   Sashiko suggested a simpler implementation with
   timer_shutdown_sync()
 - Add meson-ir-tx: Validate carrier and duty_cycle
 - Add ir_toy: Validate the maximum tx carrier

Changes since v2:
 - Cosmetic changes in:  Add missing locking for keymap
 - Patch 7 to 17 are new issues found

Changes since v1:
 - Fix issue where input device was still leaked
 - Add: Fix race between bpf(BPG_PROG_ATTACH) and device unregister
 - Add: Fix inconsistent locking of keylock

Sean Young (20):
  media: rc: Ensure registered is cleared in error path
  media: rc: Ensure that rc_unregister_device() does not free input
    device
  media: rc: Fix ABBA deadlock by making locks more fine grained
  media: rc: Replace open coded krealloc() for keymap
  media: rc: Add missing locking for keymap
  media: rc: Fix race between bpf(BPG_PROG_ATTACH) and device unregister
  media: rc: mce_kbd: Fix inconsistent locking of keylock
  media: ene_ir: Ensure teardown is done in the correct order
  media: rc: Use binary search for adding or updating a scancode
  media: rc: imon: Bind both interfaces via usb_driver_claim_interface()
  media: ir_toy: Remove unused struct field
  media: nuvoton-cir: Remove unused struct field
  media: ite-cir: Removed unused struct field
  media: fintek-cir: Remove unused fields
  media: mceusb: Remove unused field
  media: serial_ir: Fix race condition where timer can be re-armed
  media: rc: After rc_unregister_device() timers can be re-armed
  media: rc: Validate carrier range in LIRC_SET_REC_CARRIER ioctl
  media: ir_toy: Validate the maximum tx carrier
  media: meson-ir-tx: Prevent divide by zero in
    meson_irtx_prepare_pulse()

 drivers/media/rc/ene_ir.c             |   4 +-
 drivers/media/rc/fintek-cir.c         |  13 --
 drivers/media/rc/fintek-cir.h         |  22 ---
 drivers/media/rc/imon.c               | 164 ++++++++++-------------
 drivers/media/rc/ir-mce_kbd-decoder.c |   5 +-
 drivers/media/rc/ir_toy.c             |   4 +-
 drivers/media/rc/ite-cir.c            |   1 -
 drivers/media/rc/ite-cir.h            |   1 -
 drivers/media/rc/lirc_dev.c           |   2 +
 drivers/media/rc/mceusb.c             |   1 -
 drivers/media/rc/meson-ir-tx.c        |   3 +
 drivers/media/rc/nuvoton-cir.h        |   3 -
 drivers/media/rc/rc-ir-raw.c          |  39 +++---
 drivers/media/rc/rc-loopback.c        |   5 -
 drivers/media/rc/rc-main.c            | 186 ++++++++++++++++----------
 drivers/media/rc/serial_ir.c          |   2 +-
 include/media/rc-map.h                |   2 -
 17 files changed, 222 insertions(+), 235 deletions(-)

-- 
2.55.0