commit 2a0bdff6b958d1b2:
ahci_xgene: fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode
command.
added a workaround for X-Gene AHCI controller errata. This was done
for all ATA_CMD_ID_ATA commands. The errata also appears to affect
ATA_CMD_SMART commands as well. This was discovered when running
smartd or just smartctl -x. This patch adds a dma engine restart for
ATA_CMD_SMART commands which clears up the issues seen with smartd.
Signed-off-by: Mark Salter <msal...@redhat.com>
---
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 ee3a365..f9431b4 100644
--- a/drivers/ata/ahci_xgene.c
+++ b/drivers/ata/ahci_xgene.c
@@ -131,7 +131,8 @@ 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_SMART))
xgene_ahci_restart_engine(ap);
rc = ahci_qc_issue(qc);
--
1.8.3.1
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