This is a note to let you know that I've just added the patch titled scsi: pm8001: Fix NCQ NON DATA command completion handling to the 5.17-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-pm8001-fix-ncq-non-data-command-completion-hand.patch and it can be found in the queue-5.17 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 2b403f600f310ff1f9a37353b4e26db2913fffbd Author: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx> Date: Sun Feb 20 12:17:54 2022 +0900 scsi: pm8001: Fix NCQ NON DATA command completion handling [ Upstream commit 1d6736c3e162061dc811c76e605f35ef3234bffa ] NCQ NON DATA is an NCQ command with the DMA_NONE DMA direction and so a register-device-to-host-FIS response is expected for it. However, for an IO_SUCCESS case, mpi_sata_completion() expects a set-device-bits-FIS for any ata task with an use_ncq field true, which includes NCQ NON DATA commands. Fix this to correctly treat NCQ NON DATA commands as non-data by also testing for the DMA_NONE DMA direction. Link: https://lore.kernel.org/r/20220220031810.738362-16-damien.lemoal@xxxxxxxxxxxxxxxxxx Fixes: dbf9bfe61571 ("[SCSI] pm8001: add SAS/SATA HBA driver") Reviewed-by: Jack Wang <jinpu.wang@xxxxxxxxx> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index 9d982eb970fe..8095eb0b04f7 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -2418,7 +2418,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, void *piomb) len = sizeof(struct pio_setup_fis); pm8001_dbg(pm8001_ha, IO, "PIO read len = %d\n", len); - } else if (t->ata_task.use_ncq) { + } else if (t->ata_task.use_ncq && + t->data_dir != DMA_NONE) { len = sizeof(struct set_dev_bits_fis); pm8001_dbg(pm8001_ha, IO, "FPDMA len = %d\n", len); diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index 4c19691a2bce..a5a1db6ed463 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -2511,7 +2511,8 @@ mpi_sata_completion(struct pm8001_hba_info *pm8001_ha, len = sizeof(struct pio_setup_fis); pm8001_dbg(pm8001_ha, IO, "PIO read len = %d\n", len); - } else if (t->ata_task.use_ncq) { + } else if (t->ata_task.use_ncq && + t->data_dir != DMA_NONE) { len = sizeof(struct set_dev_bits_fis); pm8001_dbg(pm8001_ha, IO, "FPDMA len = %d\n", len);