diff options
Diffstat (limited to 'drivers/ata/ahci_xgene.c')
| -rw-r--r-- | drivers/ata/ahci_xgene.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/ata/ahci_xgene.c b/drivers/ata/ahci_xgene.c index feeb8f1e2fe..cbcd2081035 100644 --- a/drivers/ata/ahci_xgene.c +++ b/drivers/ata/ahci_xgene.c @@ -125,10 +125,11 @@ static int xgene_ahci_restart_engine(struct ata_port *ap) * xgene_ahci_qc_issue - Issue commands to the device * @qc: Command to issue * - * Due to Hardware errata for IDENTIFY DEVICE command, the controller cannot - * clear the BSY bit after receiving the PIO setup FIS. This results in the dma - * state machine goes into the CMFatalErrorUpdate state and locks up. By - * restarting the dma engine, it removes the controller out of lock up state. + * Due to Hardware errata for IDENTIFY DEVICE command and PACKET + * command of ATAPI protocol set, the controller cannot clear the BSY bit + * after receiving the PIO setup FIS. This results in the DMA state machine + * going into the CMFatalErrorUpdate state and locks up. By restarting the + * DMA engine, it removes the controller out of lock up state. */ static unsigned int xgene_ahci_qc_issue(struct ata_queued_cmd *qc) { @@ -137,7 +138,8 @@ static unsigned int xgene_ahci_qc_issue(struct ata_queued_cmd *qc) struct xgene_ahci_context *ctx = hpriv->plat_data; int rc = 0; - if (unlikely(ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA)) + if (unlikely((ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA) || + (ctx->last_cmd[ap->port_no] == ATA_CMD_PACKET))) xgene_ahci_restart_engine(ap); rc = ahci_qc_issue(qc); @@ -188,7 +190,7 @@ static unsigned int xgene_ahci_read_id(struct ata_device *dev, * * Clear reserved bit 8 (DEVSLP bit) as we don't support DEVSLP */ - id[ATA_ID_FEATURE_SUPP] &= ~(1 << 8); + id[ATA_ID_FEATURE_SUPP] &= cpu_to_le16(~(1 << 8)); return 0; } |