scsi: ufs: Avoid busy-waiting by eliminating tag conflicts

Instead of tracking which tags are in use in the ufs_hba.lrb_in_use
bitmask, rely on the block layer tag allocation mechanism. This patch
removes the following busy-waiting loop if ufshcd_issue_devman_upiu_cmd()
and the block layer accidentally allocate the same tag for a SCSI request:

 * ufshcd_queuecommand() returns SCSI_MLQUEUE_HOST_BUSY.

 * The SCSI core requeues the SCSI command.

Cc: Can Guo <[email protected]>
Cc: Stanley Chu <[email protected]>
Cc: Avri Altman <[email protected]>
Cc: Tomas Winkler <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

0 files changed, 0 insertions, 0 deletions