block: restore the meaning of rq->data_len to the true data length

[mirror_ubuntu-artful-kernel.git] / drivers / ata / libata-scsi.c

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 7b1f1ee8131d2cb511989f4838bcad4eb832d4c7..fe47922dd69ea2261278e8ce15d6f85fd5c9766c 100644 (file)
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2538,7 +2538,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
        }
 
        qc->tf.command = ATA_CMD_PACKET;
-       qc->nbytes = scsi_bufflen(scmd);
+       qc->nbytes = scsi_bufflen(scmd) + scmd->request->extra_len;
 
        /* check whether ATAPI DMA is safe */
        if (!using_pio && ata_check_atapi_dma(qc))
@@ -2549,7 +2549,7 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc)
         * want to set it properly, and for DMA where it is
         * effectively meaningless.
         */
-       nbytes = min(scmd->request->raw_data_len, (unsigned int)63 * 1024);
+       nbytes = min(scmd->request->data_len, (unsigned int)63 * 1024);
 
        /* Most ATAPI devices which honor transfer chunk size don't
         * behave according to the spec when odd chunk size which
@@ -2875,7 +2875,7 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
         * TODO: find out if we need to do more here to
         *       cover scatter/gather case.
         */
-       qc->nbytes = scsi_bufflen(scmd);
+       qc->nbytes = scsi_bufflen(scmd) + scmd->request->extra_len;
 
        /* request result TF and be quiet about device error */
        qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;