From: Jiri Slaby <jsl...@suse.cz>

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 <jsl...@suse.cz>
Cc: Jens Axboe <ax...@kernel.dk>
Cc: linux-...@vger.kernel.org
Signed-off-by: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

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

--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -486,6 +486,7 @@ 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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