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-rw-r--r--include/linux/libata.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index c3820f105ff..b0d4ca0d27b 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -272,6 +272,10 @@ enum {
/* ering size */
ATA_ERING_SIZE = 32,
+ /* return values for ->qc_defer */
+ ATA_DEFER_LINK = 1,
+ ATA_DEFER_PORT = 2,
+
/* desc_len for ata_eh_info and context */
ATA_EH_DESC_LEN = 80,
@@ -639,6 +643,7 @@ struct ata_port_operations {
void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
+ int (*qc_defer) (struct ata_queued_cmd *qc);
void (*qc_prep) (struct ata_queued_cmd *qc);
unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
@@ -824,6 +829,7 @@ extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);
extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);
+extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc);
extern void ata_qc_prep(struct ata_queued_cmd *qc);
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);