1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index d1dfe872ee30..7e206da1fbfb 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1039,6 +1039,7 @@ extern void ata_eh_thaw_port(struct ata_port *ap);
 
 extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
 extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
+extern void ata_eh_analyze_ncq_error(struct ata_link *link);
 
 extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
                       ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
@@ -1381,6 +1382,21 @@ static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
         return *(struct ata_port **)&host->hostdata[0];
 }
 
+static inline int ata_check_ready(u8 status)
+{
+        /* Some controllers report 0x77 or 0x7f during intermediate
+         * not-ready stages.
+         */
+        if (status == 0x77 || status == 0x7f)
+                return 0;
+
+        /* 0xff indicates either no device or device not ready */
+        if (status == 0xff)
+                return -ENODEV;
+
+        return !(status & ATA_BUSY);
+}
+
 
 /**************************************************************************
  * PMP - drivers/ata/libata-pmp.c