[PATCH V2 0/7] i3c: Fix IBI race, address handling, and reconcile DAA

[Adrian Hunter]

Hi

Patches 1-2 fix a use-after-free race in the MIPI I3C HCI driver's IBI
handling and make IBI teardown resilient to DISEC failures.

Patches 3-7 fix address management issues in the I3C core and HCI
driver that arise when Dynamic Address Assignment (DAA) does not complete
cleanly, culminating in a reconciliation step that detects and resolves
inconsistencies between assigned address slots and registered devices.

Patches are based on top of:

      [PATCH V3 0/8] i3c: Hot-Join improvements and MIPI HCI Hot-Join support
      https://lore.kernel.org/linux-i3c/20260608054312.10604-1-adrian.hunter@xxxxxxxxx

which, in turn, applies on top of:

      [PATCH V5 00/17] i3c: mipi-i3c-hci: DMA abort, recovery and related improvements
      https://lore.kernel.org/linux-i3c/20260603090754.16252-1-adrian.hunter@xxxxxxxxx


Changes in V2:
    i3c: mipi-i3c-hci: Fix race in i3c_hci_addr_to_dev()
	Factor out __i3c_hci_disable_ibi() to facilitate also clearing
	ibi_devs[dat_idx] upon IBI free, and update commit message
	accordingly.
	Demote a message in PIO and DMA IBI handling, and update commit
	message accordingly.

    i3c: mipi-i3c-hci: Ignore DISEC failures when disabling IBIs
	Re-base due to changes in previous patch.

    i3c: master: Prevent reuse of dynamic address on device add failure
	Fix 'if (IS_ERR(newdev)' error path.
	Be defensive and do not change the addr_slot_status if it is not
	free, and update commit message accordingly.
	Amend commit message to note removal of unnecesary 'if (!master)'
	check.
	Add Fixes tag.

    i3c: mipi-i3c-hci: Tolerate i3c_master_add_i3c_dev_locked() failures in DAA
	None

    i3c: master: Make i3c_master_add_i3c_dev_locked() return void
	Re-base due to changes in previous patches.

    i3c: master: Move DAA API functions after i3c_master_add_i3c_dev_locked()
	None

    i3c: master: Reconcile dynamic addresses after DAA
	Add bitmap.h include for bitmap_zero() etc.
	Re-base due to changes in previous patches.


Adrian Hunter (7):
      i3c: mipi-i3c-hci: Fix race in i3c_hci_addr_to_dev()
      i3c: mipi-i3c-hci: Ignore DISEC failures when disabling IBIs
      i3c: master: Prevent reuse of dynamic address on device add failure
      i3c: mipi-i3c-hci: Tolerate i3c_master_add_i3c_dev_locked() failures in DAA
      i3c: master: Make i3c_master_add_i3c_dev_locked() return void
      i3c: master: Move DAA API functions after i3c_master_add_i3c_dev_locked()
      i3c: master: Reconcile dynamic addresses after DAA

 drivers/i3c/master.c                     | 275 ++++++++++++++++++++++---------
 drivers/i3c/master/mipi-i3c-hci/cmd_v1.c |   4 +-
 drivers/i3c/master/mipi-i3c-hci/cmd_v2.c |   4 +-
 drivers/i3c/master/mipi-i3c-hci/core.c   |  45 ++++-
 drivers/i3c/master/mipi-i3c-hci/dma.c    |   7 +-
 drivers/i3c/master/mipi-i3c-hci/hci.h    |   1 +
 drivers/i3c/master/mipi-i3c-hci/ibi.h    |  13 +-
 drivers/i3c/master/mipi-i3c-hci/pio.c    |   7 +-
 include/linux/i3c/master.h               |   3 +-
 9 files changed, 250 insertions(+), 109 deletions(-)


Regards
Adrian