Date: Wed, 12 Jul 2006 17:56:02 -0700 From: Nate Lawson <nate@root.org> To: current <current@freebsd.org> Subject: cbb hangs during suspend if ath card active Message-ID: <44B59A22.7000407@root.org>
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I've seen a recent regression in the past few months when suspending my laptop. When I have an ath0 card inserted in a cardbus slot and then press the sleep button, the system hangs. If I eject the card, it continues going into suspend and everything works as normal. If the card is up (ifconfig up), this process hangs. If it's down, no hang and it suspends normally. I did some debugging by starting the suspend, waiting for the hang, hitting "break to ddb", and then ejecting the card. The eject causes an interrupt which causes ddb to be entered. With ps, I can see that the thread on the acpi_taskq is running the button event and then calling bus_generic_suspend(), which eventually calls cbb_detach(), which then calls a power routine in pccbb.c. This routine calls tsleep() (wchan "cbbP3") which never wakes up. Any idea why tsleep() is not waking up now? It seems tsleep() calls mi_switch() and never returns. -- Nate
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