Commit ee194b75 authored Jul 14, 2016 by Damien Le Moal Committed by Tejun Heo Jul 15, 2016

libata-scsi: Fix ZBC management out command translation



The subcommand for NCQ NON-DATA must be specified in the feature
(low byte), not the high-order count byte.  Also make sure to properly
cast the all bit to a u16 before shiting it by 8 to avoid undefined
behavior.

Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
[hch: split the original patch into two, updated changelog]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent 3f17422b

drivers/ata/libata-scsi.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -3553,9 +3553,9 @@ static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
		ata_fpdma_zac_mgmt_out_supported(qc->dev)) {
		tf->protocol = ATA_PROT_NCQ_NODATA;
		tf->command = ATA_CMD_NCQ_NON_DATA;
		tf->hob_nsect = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT;
		tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT;
		tf->nsect = qc->tag << 3;
		tf->auxiliary = sa \| (reset_all & 0x1) << 8;
		tf->auxiliary = sa \| ((u16)(reset_all & 0x1) << 8);
		} else {
		tf->protocol = ATA_PROT_NODATA;
		tf->command = ATA_CMD_ZAC_MGMT_OUT;