[PATCHv3 0/6] ata: pata_mpc52xx: fix cleanup ordering and modernize

[Rosen Penev <rosenp@gmail.com>]

Fix several lifecycle bugs in the MPC52xx ATA driver:

 - The BestComm task IRQ was managed by devm, creating a use-after-free
   and teardown inversion.  Switch to non-devm request_irq/free_irq so
   the interrupt is unregistered before the task is freed.

 - The error and remove paths called irq_dispose_mapping() explicitly,
   duplicating the one in bcom_task_free().  Remove the redundant calls.

 - Replace irq_of_parse_and_map() with platform_get_irq() for proper
   error handling and integration with the platform device model.

 - Replace the open-coded of_address_to_resource()/devm_request_mem_region()
   /devm_ioremap() sequence with the standard helper.

v3: extra sashiko fix and platform_get_irq moved.
v2: add extra patch from sashiko review.

Rosen Penev (6):
  ata: pata_mpc52xx: fix NULL pointer dereference in IRQ handler
  ata: pata_mpc52xx: synchronize with task IRQ before resetting DMA
    state
  ata: pata_mpc52xx: reset cached DMA direction on resume
  ata: pata_mpc52xx: remove redundant irq_dispose_mapping calls
  ata: pata_mpc52xx: convert to platform_get_irq()
  ata: pata_mpc52xx: convert to full devm resource management

 drivers/ata/pata_mpc52xx.c | 101 ++++++++++++-------------------------
 1 file changed, 33 insertions(+), 68 deletions(-)

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2.54.0