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The bnx(4) handler runs at IPL_NET (works with spin mutexes), while 

allocations can be deferred to a workqueue(9): set its highest IPL to
IPL_NET and not IPL_NONE, which is protected by an adaptive/sleeping mutex.
This commit is contained in:
jym 2011-09-22 08:42:53 +00:00
parent 162d7d5b76
commit 3d92bf7df0
1 changed files with 3 additions and 3 deletions
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6
sys/dev/pci/if_bnx.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_bnx.c,v 1.44 2011/07/15 11:29:31 jym Exp $ */
/* $NetBSD: if_bnx.c,v 1.45 2011/09/22 08:42:53 jym Exp $ */
/* $OpenBSD: if_bnx.c,v 1.85 2009/11/09 14:32:41 dlg Exp $ */
/*-
@ -35,7 +35,7 @@
#if 0
__FBSDID("$FreeBSD: src/sys/dev/bce/if_bce.c,v 1.3 2006/04/13 14:12:26 ru Exp $");
#endif
__KERNEL_RCSID(0, "$NetBSD: if_bnx.c,v 1.44 2011/07/15 11:29:31 jym Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_bnx.c,v 1.45 2011/09/22 08:42:53 jym Exp $");
/*
* The following controllers are supported by this driver:
@ -707,7 +707,7 @@ bnx_attach(device_t parent, device_t self, void *aux)
/* create workqueue to handle packet allocations */
if (workqueue_create(&sc->bnx_wq, device_xname(self),
bnx_alloc_pkts, sc, PRI_NONE, IPL_NONE, WQ_MPSAFE) != 0) {
bnx_alloc_pkts, sc, PRI_NONE, IPL_NET, WQ_MPSAFE) != 0) {
aprint_error_dev(self, "failed to create workqueue\n");
goto bnx_attach_fail;
}