1 files changed, 26 insertions, 2 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index ed6aacc236dd..457bdc44e4b1 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -175,6 +175,13 @@ enum hsm_task_states {
                                    write CDB or first data block */
 };
 
+enum ata_completion_errors {
+        AC_ERR_OTHER            = (1 << 0),
+        AC_ERR_DEV              = (1 << 1),
+        AC_ERR_ATA_BUS          = (1 << 2),
+        AC_ERR_HOST_BUS         = (1 << 3),
+};
+
 /* forward declarations */
 struct scsi_device;
 struct ata_port_operations;
@@ -182,7 +189,7 @@ struct ata_port;
 struct ata_queued_cmd;
 
 /* typedefs */
-typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, u8 drv_stat);
+typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, unsigned int err_mask);
 
 struct ata_ioports {
         unsigned long           cmd_addr;
@@ -456,7 +463,7 @@ extern void ata_bmdma_start (struct ata_queued_cmd *qc);
 extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
 extern u8   ata_bmdma_status(struct ata_port *ap);
 extern void ata_bmdma_irq_clear(struct ata_port *ap);
-extern void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat);
+extern void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask);
 extern void ata_eng_timeout(struct ata_port *ap);
 extern void ata_scsi_simulate(u16 *id, struct scsi_cmnd *cmd,
                               void (*done)(struct scsi_cmnd *));
@@ -719,4 +726,21 @@ static inline int ata_try_flush_cache(const struct ata_device *dev)
                ata_id_has_flush_ext(dev->id);
 }
 
+static inline unsigned int ac_err_mask(u8 status)
+{
+        if (status & ATA_BUSY)
+                return AC_ERR_ATA_BUS;
+        if (status & (ATA_ERR | ATA_DF))
+                return AC_ERR_DEV;
+        return 0;
+}
+
+static inline unsigned int __ac_err_mask(u8 status)
+{
+        unsigned int mask = ac_err_mask(status);
+        if (mask == 0)
+                return AC_ERR_OTHER;
+        return mask;
+}
+
 #endif /* __LINUX_LIBATA_H__ */