[GIT PULL] ata fixes for 7.1-rc5

[Niklas Cassel <cassel@kernel.org>]

Linus,

The following changes since commit 163f6494233e1679ec6fa6a4803f74ae7b1c94db:

  ata: pata_parport: switch to dynamic root device (2026-04-27 11:38:16 +0200)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux tags/ata-7.1-rc5

for you to fetch changes up to 759e8756da00aa115d504a18155b1d1ee1cc12e8:

  ata: libata-scsi: do not needlessly defer commands when using PMP with FBS (2026-05-18 12:26:51 +0200)

----------------------------------------------------------------
ata fixes for 7.1-rc5

 - Make sure that the issuing of a deferred non-NCQ command via
   workqueue feature is only used when mixing NCQ and non-NCQ commands
   to the same link (i.e. return value ATA_DEFER_LINK), and nothing
   else. This way we will not incorrectly try to use the feature for
   e.g. PATA drivers.

 - The deferred non-NCQ command was stored in a per-port struct.
   When using Port Multipliers with FIS-Based Switching, we would thus
   needlessly defer commands to all other links. Store the deferred QC
   in a per-link struct, such that Port Multipliers with FBS will get
   the same performance as before.

 - The issuing of a deferred non-NCQ command via workqueue feature
   broke support for Port Multipliers using Command-Based Switching.
   The issuing of a deferred non-NCQ command via workqueue feature is
   not compatible with the use of ap->excl_link, which PMPs with CBS
   use for fairness (using implicit round robin).

----------------------------------------------------------------
Niklas Cassel (4):
      ata: libata-scsi: improve readability of ata_scsi_qc_issue()
      ata: libata-scsi: do not use the deferred QC feature for ATA_DEFER_PORT
      ata: libata-scsi: do not use the deferred QC feature on PMPs with CBS
      ata: libata-scsi: do not needlessly defer commands when using PMP with FBS

 drivers/ata/libata-core.c |  9 +++--
 drivers/ata/libata-eh.c   |  8 ++---
 drivers/ata/libata-pmp.c  | 18 ++++++++--
 drivers/ata/libata-scsi.c | 89 +++++++++++++++++++++++++++--------------------
 drivers/ata/sata_sil24.c  |  6 +++-
 include/linux/libata.h    |  7 ++--
 6 files changed, 87 insertions(+), 50 deletions(-)