Date: Fri, 20 Nov 2009 22:02:54 GMT From: Tibor Vidok <tibor.vidok@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/140728: Fast irq registration in em driver Message-ID: <200911202202.nAKM2sji001195@www.freebsd.org> Resent-Message-ID: <200911202210.nAKMA1Gi084527@freefall.freebsd.org>
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>Number: 140728
>Category: kern
>Synopsis: Fast irq registration in em driver
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Nov 20 22:10:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Tibor Vidok
>Release: >=FreeBSD-7.0
>Organization:
>Environment:
>Description:
I have noticed that parameters of bus_setup_intr() are not in the
correct order when em_allocate_legacy() registers the FAST IRQ handler.
I have found this error in FreeBSD-7.0 release, and is still exists in
HEAD version.
>How-To-Repeat:
Configure your kernel to use em driver with fast interrupts and try to use it.
>Fix:
In the attachment you can find the patch which solves the problem for
the HEAD version.
Patch attached with submission follows:
Index: if_em.c
===================================================================
--- if_em.c (revision 199611)
+++ if_em.c (working copy)
@@ -2882,7 +2882,7 @@
INTR_TYPE_NET | INTR_FAST, em_irq_fast, adapter,
#else
if ((error = bus_setup_intr(dev, adapter->res[0],
- INTR_TYPE_NET, em_irq_fast, NULL, adapter,
+ INTR_TYPE_NET, NULL, em_irq_fast, adapter,
#endif
&adapter->tag[0])) != 0) {
device_printf(dev, "Failed to register fast interrupt "
>Release-Note:
>Audit-Trail:
>Unformatted:
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