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-rw-r--r--drivers/ata/libata-sff.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 4b4739486327..9033d164c4ec 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -1227,10 +1227,19 @@ fsm_start:
/* ATA PIO protocol */
if (unlikely((status & ATA_DRQ) == 0)) {
/* handle BSY=0, DRQ=0 as error */
- if (likely(status & (ATA_ERR | ATA_DF)))
+ if (likely(status & (ATA_ERR | ATA_DF))) {
/* device stops HSM for abort/error */
qc->err_mask |= AC_ERR_DEV;
- else {
+
+ /* If diagnostic failed and this is
+ * IDENTIFY, it's likely a phantom
+ * device. Mark hint.
+ */
+ if (qc->dev->horkage &
+ ATA_HORKAGE_DIAGNOSTIC)
+ qc->err_mask |=
+ AC_ERR_NODEV_HINT;
+ } else {
/* HSM violation. Let EH handle this.
* Phantom devices also trigger this
* condition. Mark hint.