[src/trunk]: src/sys/dev/ata Move standby on detach after wedges deletion in ...

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0bc0c0245dc2
branches:  trunk
changeset: 840055:0bc0c0245dc2
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Tue Mar 19 06:47:12 2019 +0000

description:
Move standby on detach after wedges deletion in case wedges trigger
I/O on the parent disk. Add debug messages.

diffstat:

 sys/dev/ata/wd.c |  13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diffs (51 lines):

diff -r 463144329591 -r 0bc0c0245dc2 sys/dev/ata/wd.c
--- a/sys/dev/ata/wd.c  Tue Mar 19 06:19:44 2019 +0000
+++ b/sys/dev/ata/wd.c  Tue Mar 19 06:47:12 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: wd.c,v 1.443 2018/10/24 19:46:44 jdolecek Exp $ */
+/*     $NetBSD: wd.c,v 1.444 2019/03/19 06:47:12 mlelstv Exp $ */
 
 /*
  * Copyright (c) 1998, 2001 Manuel Bouyer.  All rights reserved.
@@ -54,7 +54,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.443 2018/10/24 19:46:44 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.444 2019/03/19 06:47:12 mlelstv Exp $");
 
 #include "opt_ata.h"
 #include "opt_wd.h"
@@ -534,12 +534,12 @@
 
        bufq_free(dksc->sc_bufq);
 
+       /* Delete all of our wedges. */
+       dkwedge_delall(&dksc->sc_dkdev);
+
        if (flags & DETACH_POWEROFF)
                wd_standby(wd, AT_POLL);
 
-       /* Delete all of our wedges. */
-       dkwedge_delall(&dksc->sc_dkdev);
-
        /* Detach from the disk list. */
        disk_detach(&dksc->sc_dkdev);
        disk_destroy(&dksc->sc_dkdev);
@@ -1729,6 +1729,7 @@
        struct ata_xfer *xfer;
        int error;
 
+       aprint_debug_dev(dksc->sc_dev, "standby immediate\n");
        xfer = ata_get_xfer(wd->drvp->chnl_softc, true);
 
        xfer->c_ata_c.r_command = WDCC_STANDBY_IMMED;
@@ -1745,6 +1746,8 @@
        if (xfer->c_ata_c.flags & AT_ERROR) {
                if (xfer->c_ata_c.r_error == WDCE_ABRT) {
                        /* command not supported */
+                       aprint_debug_dev(dksc->sc_dev,
+                               "standby immediate not supported\n");
                        error = ENODEV;
                        goto out;
                }