[src/trunk]: src/sys/kern drvctl(4): If no ifattr is specified on rescan, res...

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

details:   https://anonhg.NetBSD.org/src/rev/550ea8a967da
branches:  trunk
changeset: 379716:550ea8a967da
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Jun 16 00:19:46 2021 +0000

description:
drvctl(4): If no ifattr is specified on rescan, rescan all of them.

No longer must you remember the magic `-a ata_hl' incantation when
you deign to `drvctl -r atabusN'.  It didn't actually do anything
anyway: atabus_rescan always rescans all ifattrs; same with
uhub_rescan and many others.

diffstat:

 sys/kern/kern_drvctl.c |  18 +++++++++++-------
 1 files changed, 11 insertions(+), 7 deletions(-)

diffs (49 lines):

diff -r f89efccae135 -r 550ea8a967da sys/kern/kern_drvctl.c
--- a/sys/kern/kern_drvctl.c    Tue Jun 15 23:39:43 2021 +0000
+++ b/sys/kern/kern_drvctl.c    Wed Jun 16 00:19:46 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: kern_drvctl.c,v 1.48 2021/06/12 12:14:03 riastradh Exp $ */
+/* $NetBSD: kern_drvctl.c,v 1.49 2021/06/16 00:19:46 riastradh Exp $ */
 
 /*
  * Copyright (c) 2004
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_drvctl.c,v 1.48 2021/06/12 12:14:03 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_drvctl.c,v 1.49 2021/06/16 00:19:46 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -318,11 +318,15 @@ rescanbus(const char *busname, const cha
            !d->dv_cfdriver->cd_attrs)
                return ENODEV;
 
-       /* allow to omit attribute if there is exactly one */
+       /* rescan all ifattrs if none is specified */
        if (!ifattr) {
-               if (d->dv_cfdriver->cd_attrs[1])
-                       return EINVAL;
-               ifattr = d->dv_cfdriver->cd_attrs[0]->ci_name;
+               rc = 0;
+               for (ap = d->dv_cfdriver->cd_attrs; *ap; ap++) {
+                       rc = (*d->dv_cfattach->ca_rescan)(d, (*ap)->ci_name,
+                           locs);
+                       if (rc)
+                               break;
+               }
        } else {
                /* check for valid attribute passed */
                for (ap = d->dv_cfdriver->cd_attrs; *ap; ap++)
@@ -330,9 +334,9 @@ rescanbus(const char *busname, const cha
                                break;
                if (!*ap)
                        return EINVAL;
+               rc = (*d->dv_cfattach->ca_rescan)(d, ifattr, locs);
        }
 
-       rc = (*d->dv_cfattach->ca_rescan)(d, ifattr, locs);
        config_deferred(NULL);
        return rc;
 }