[PATCH v2 0/2] ATA port deferred qc fixes

[Damien Le Moal <dlemoal@kernel.org>]

The first patch addresses a use-after-free issue when a deferred qc
times out. The second patch avoids a call to a potentially sleeping
function while a port spinlock is held.

Changes from v1:
 - Corrected typo in patch 1 message, improved comment in code and added
   a WARN_ON_ONCE() call to verify that a timed out qc is not active.
 - Fixed patch 2 to not call ata_scsi_requeue_deferred_qc() without the
   port lock held. This call is in fact removed: it is not needed as
   ata_scsi_requeue_deferred_qc() is called in EH, which is always run
   when removing a port.

Damien Le Moal (2):
  ata: libata-eh: correctly handle deferred qc timeouts
  ata: libata-core: fix cancellation of a port deferred qc work

 drivers/ata/libata-core.c |  8 +++-----
 drivers/ata/libata-eh.c   | 22 +++++++++++++++++++---
 2 files changed, 22 insertions(+), 8 deletions(-)

-- 
2.53.0