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| author | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-02-20 06:17:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 15:39:52 +0300 |
| commit | aa28075f06b821a7988053cb9b77edc0c9ea4f0d (patch) | |
| tree | ce5250ab76fbb45adfe7decd13fa515c653c739b | |
| parent | 4bcefc78c87409da495eda4afe12b37ef5aa9ea1 (diff) | |
| download | linux-aa28075f06b821a7988053cb9b77edc0c9ea4f0d.tar.xz | |
scsi: libsas: Fix sas_ata_qc_issue() handling of NCQ NON DATA commands
commit 8454563e4c2aafbfb81a383ab423ea8b9b430a25 upstream.
To detect for the DMA_NONE (no data transfer) DMA direction,
sas_ata_qc_issue() tests if the command protocol is ATA_PROT_NODATA. This
test does not include the ATA_CMD_NCQ_NON_DATA command as this command
protocol is defined as ATA_PROT_NCQ_NODATA (equal to ATA_PROT_FLAG_NCQ) and
not as ATA_PROT_NODATA.
To include both NCQ and non-NCQ commands when testing for the DMA_NONE DMA
direction, use "!ata_is_data()".
Link: https://lore.kernel.org/r/20220220031810.738362-2-damien.lemoal@opensource.wdc.com
Fixes: 176ddd89171d ("scsi: libsas: Reset num_scatter if libata marks qc as NODATA")
Cc: stable@vger.kernel.org
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/scsi/libsas/sas_ata.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 8b9a39077dba..a1a06a832d86 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -202,7 +202,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) task->total_xfer_len = qc->nbytes; task->num_scatter = qc->n_elem; task->data_dir = qc->dma_dir; - } else if (qc->tf.protocol == ATA_PROT_NODATA) { + } else if (!ata_is_data(qc->tf.protocol)) { task->data_dir = DMA_NONE; } else { for_each_sg(qc->sg, sg, qc->n_elem, si) |