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Implement and use a dkminphys() that calls the parent device's minphys

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function with b_dev temporarily adjusted to the parent device's dev_t.

Fixes PR/37390.
This commit is contained in:
jakllsch 2009-12-27 01:37:17 +00:00
parent 3fab09205c
commit a70f4ed596
1 changed files with 22 additions and 6 deletions
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28
sys/dev/dkwedge/dk.c
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@ -1,4 +1,4 @@
/* $NetBSD: dk.c,v 1.51 2009/09/08 21:14:33 pooka Exp $ */
/* $NetBSD: dk.c,v 1.52 2009/12/27 01:37:17 jakllsch Exp $ */
/*-
* Copyright (c) 2004, 2005, 2006, 2007 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.51 2009/09/08 21:14:33 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: dk.c,v 1.52 2009/12/27 01:37:17 jakllsch Exp $");
#ifdef _KERNEL_OPT
#include "opt_dkwedge.h"
@ -95,6 +95,7 @@ struct dkwedge_softc {
static void dkstart(struct dkwedge_softc *);
static void dkiodone(struct buf *);
static void dkrestart(void *);
static void dkminphys(struct buf *);
static int dklastclose(struct dkwedge_softc *);
static int dkwedge_detach(device_t, int);
@ -1241,6 +1242,23 @@ dkrestart(void *v)
splx(s);
}
/*
* dkminphys:
*
* Call parent's minphys function.
*/
static void
dkminphys(struct buf *bp)
{
struct dkwedge_softc *sc = dkwedge_lookup(bp->b_dev);
dev_t dev;
dev = bp->b_dev;
bp->b_dev = sc->sc_pdev;
(*sc->sc_parent->dk_driver->d_minphys)(bp);
bp->b_dev = dev;
}
/*
* dkread: [devsw entry point]
*
@ -1254,8 +1272,7 @@ dkread(dev_t dev, struct uio *uio, int flags)
if (sc->sc_state != DKW_STATE_RUNNING)
return (ENXIO);
return (physio(dkstrategy, NULL, dev, B_READ,
sc->sc_parent->dk_driver->d_minphys, uio));
return (physio(dkstrategy, NULL, dev, B_READ, dkminphys, uio));
}
/*
@ -1271,8 +1288,7 @@ dkwrite(dev_t dev, struct uio *uio, int flags)
if (sc->sc_state != DKW_STATE_RUNNING)
return (ENXIO);
return (physio(dkstrategy, NULL, dev, B_WRITE,
sc->sc_parent->dk_driver->d_minphys, uio));
return (physio(dkstrategy, NULL, dev, B_WRITE, dkminphys, uio));
}
/*