scsi: ufs: core: Remove completed-without-interrupt path in ufshcd_abort()

In SDB mode, a command that times out right as the controller finishes it
can be completed twice:

 1. The command times out and scsi_timeout() schedules ufshcd_abort().

 2. The controller finishes the command and clears its doorbell bit in
    REG_UTP_TRANSFER_REQ_DOOR_BELL, while the completion handler has not
    yet cleared BIT(tag) in hba->outstanding_reqs.

 3. ufshcd_abort() sees the doorbell bit clear and calls
    __ufshcd_transfer_req_compl() without clearing BIT(tag) in
    hba->outstanding_reqs.

 4. The normal completion handler or the logical unit reset that follows
    sees BIT(tag) still set in hba->outstanding_reqs and completes the same
    command a second time.

This branch only exists for a rare corner case, a completion interrupt that
is lost or arrives late. Remove it to simplify the abort path and leave
such a command to the SCSI error handler, like any other command that
cannot be aborted. The cost is a slower recovery in this corner case, which
is acceptable since it only happens after a timeout.

Fixes: 169f5eb28869 ("scsi: ufs: Optimize SCSI command processing")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/fdb5c391-01ef-4a23-94c2-4f3853909348@acm.org
Signed-off-by: Stanley Jhu <stanleyjhu@google.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20261022034443.3034432-6-stanleyjhu@google.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions