[PATCH 4.4 83/85] ata: define AC_ERR_OK

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From: Jiri Slaby <jslaby@xxxxxxx>

commit 25937580a5065d6fbd92d9c8ebd47145ad80052e upstream.

Since we will return enum ata_completion_errors from qc_prep in the next
patch, let's define AC_ERR_OK to mark the OK status.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: linux-ide@xxxxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 include/linux/libata.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -500,6 +500,7 @@ enum hsm_task_states {
 };
 
 enum ata_completion_errors {
+	AC_ERR_OK		= 0,	    /* no error */
 	AC_ERR_DEV		= (1 << 0), /* device reported error */
 	AC_ERR_HSM		= (1 << 1), /* host state machine violation */
 	AC_ERR_TIMEOUT		= (1 << 2), /* timeout */





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