[src/trunk]: src/sys/dev/wscons use kmem, don't check for allocation failure ...

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

details:   https://anonhg.NetBSD.org/src/rev/5cfe471be29c
branches:  trunk
changeset: 357259:5cfe471be29c
user:      maya <maya%NetBSD.org@localhost>
date:      Fri Nov 03 13:34:56 2017 +0000

description:
use kmem, don't check for allocation failure with KM_SLEEP

diffstat:

 sys/dev/wscons/wsdisplay_compat_usl.c |  15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diffs (59 lines):

diff -r 94ee5a74a315 -r 5cfe471be29c sys/dev/wscons/wsdisplay_compat_usl.c
--- a/sys/dev/wscons/wsdisplay_compat_usl.c     Fri Nov 03 13:11:39 2017 +0000
+++ b/sys/dev/wscons/wsdisplay_compat_usl.c     Fri Nov 03 13:34:56 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: wsdisplay_compat_usl.c,v 1.49 2015/08/24 22:50:33 pooka Exp $ */
+/* $NetBSD: wsdisplay_compat_usl.c,v 1.50 2017/11/03 13:34:56 maya Exp $ */
 
 /*
  * Copyright (c) 1998
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: wsdisplay_compat_usl.c,v 1.49 2015/08/24 22:50:33 pooka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: wsdisplay_compat_usl.c,v 1.50 2017/11/03 13:34:56 maya Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_compat_freebsd.h"
@@ -39,9 +39,9 @@
 #include <sys/callout.h>
 #include <sys/ioctl.h>
 #include <sys/kernel.h>
+#include <sys/kmem.h>
 #include <sys/proc.h>
 #include <sys/signalvar.h>
-#include <sys/malloc.h>
 #include <sys/errno.h>
 #include <sys/kauth.h>
 
@@ -101,9 +101,8 @@
        struct usl_syncdata *sd;
        int res;
 
-       sd = malloc(sizeof(struct usl_syncdata), M_DEVBUF, M_WAITOK);
-       if (!sd)
-               return (ENOMEM);
+       sd = kmem_alloc(sizeof(struct usl_syncdata), KM_SLEEP);
+
        sd->s_scr = scr;
        sd->s_proc = p;
        sd->s_pid = p->p_pid;
@@ -117,7 +116,7 @@
        callout_setfunc(&sd->s_detach_ch, usl_detachtimeout, sd);
        res = wsscreen_attach_sync(scr, &usl_syncops, sd);
        if (res) {
-               free(sd, M_DEVBUF);
+               kmem_free(sd, sizeof(struct usl_syncdata));
                return (res);
        }
        *sdp = sd;
@@ -136,7 +135,7 @@
                (*sd->s_callback)(sd->s_cbarg, ENXIO, 0);
        }
        wsscreen_detach_sync(sd->s_scr);
-       free(sd, M_DEVBUF);
+       kmem_free(sd, sizeof(struct usl_syncdata));
 }
 
 static int