This patch addresses the issue with ATA_CMD_SMART pio mode command for enumeration and device detection with ATA devices. The X-Gene AHCI controller has an errata in which it cannot clear the BSY bit after the PIO setup FIS. The dma state machine enters CMFatalErrorUpdate state and locks up. It is the same issue as in the patch(Commit ID : 2a0bdff6b958d1b2523d2754b6cd5e0ea4053016). Signed-off-by: Suman Tripathi <stripathi@xxxxxxx> --- --- drivers/ata/ahci_xgene.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c index 7f68875..506cf5f 100644 --- a/drivers/ata/ahci_xgene.c +++ b/drivers/ata/ahci_xgene.c @@ -211,7 +211,8 @@ static unsigned int xgene_ahci_qc_issue(struct ata_queued_cmd *qc) } if (unlikely((ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA) || - (ctx->last_cmd[ap->port_no] == ATA_CMD_PACKET))) + (ctx->last_cmd[ap->port_no] == ATA_CMD_PACKET) || + (ctx->last_cmd[ap->port_no] == ATA_CMD_SMART))) xgene_ahci_restart_engine(ap); rc = ahci_qc_issue(qc); -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
