1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 9fcc061e3adf..a5c213ce97c9 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -160,6 +160,9 @@ enum {
         ATA_QCFLAG_DMAMAP       = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
         ATA_QCFLAG_EH_SCHEDULED = (1 << 5), /* EH scheduled */
 
+        /* host set flags */
+        ATA_HOST_SIMPLEX        = (1 << 0),     /* Host is simplex, one DMA channel per host_set only */
+        
         /* various lengths of time */
         ATA_TMOUT_PIO           = 30 * HZ,
         ATA_TMOUT_BOOT          = 30 * HZ,      /* heuristic */
@@ -278,6 +281,7 @@ struct ata_probe_ent {
         unsigned long           irq;
         unsigned int            irq_flags;
         unsigned long           host_flags;
+        unsigned long           host_set_flags;
         void __iomem            *mmio_base;
         void                    *private_data;
 };