From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Finn Thain <fthain@telegraphics.com.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
linux-m68k@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-serial@vger.kernel.org
Subject: Re: [PATCH 01/16 v3] pmac_zilog: fix unexpected irq
Date: Fri, 09 Dec 2011 06:44:09 +1100 [thread overview]
Message-ID: <1323373449.12793.40.camel@pasglop> (raw)
In-Reply-To: <alpine.LNX.2.00.1112082128330.2357@nippy.intranet>
On Thu, 2011-12-08 at 22:26 +1100, Finn Thain wrote:
>
> Maybe the modem wants a transition on DTR or similar, but it hasn't had
> time to initialise when that happens during SCC resumption.
>
> If so, calling pmz_shutdown() then pmz_startup() from the tail of
> pmz_resume() without delay should probably fail to revive it...
Well, we power the modem down and back up... but it's possible that we
fail to re-enable something, I'll check. That used to work (at least
with macserial, maybe I never tried this specific torture with pmz...).
I'll figure it out eventually.
Cheers,
Ben.
WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Finn Thain <fthain@telegraphics.com.au>
Cc: linuxppc-dev@lists.ozlabs.org, linux-m68k@vger.kernel.org,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-serial@vger.kernel.org
Subject: Re: [PATCH 01/16 v3] pmac_zilog: fix unexpected irq
Date: Fri, 09 Dec 2011 06:44:09 +1100 [thread overview]
Message-ID: <1323373449.12793.40.camel@pasglop> (raw)
In-Reply-To: <alpine.LNX.2.00.1112082128330.2357@nippy.intranet>
On Thu, 2011-12-08 at 22:26 +1100, Finn Thain wrote:
>
> Maybe the modem wants a transition on DTR or similar, but it hasn't had
> time to initialise when that happens during SCC resumption.
>
> If so, calling pmz_shutdown() then pmz_startup() from the tail of
> pmz_resume() without delay should probably fail to revive it...
Well, we power the modem down and back up... but it's possible that we
fail to re-enable something, I'll check. That used to work (at least
with macserial, maybe I never tried this specific torture with pmz...).
I'll figure it out eventually.
Cheers,
Ben.
next prev parent reply other threads:[~2011-12-08 19:44 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-23 14:11 [PATCH 00/16] more mac68k fixes and cleanup Finn Thain
2011-10-23 14:11 ` [PATCH 01/16] pmac_zilog: fix unexpected irq Finn Thain
2011-10-23 14:11 ` Finn Thain
2011-11-24 14:34 ` Finn Thain
2011-11-24 14:34 ` Finn Thain
2011-11-24 14:56 ` Alan Cox
2011-11-24 14:56 ` Alan Cox
2011-11-24 20:41 ` Benjamin Herrenschmidt
2011-11-24 20:41 ` Benjamin Herrenschmidt
2011-11-25 3:15 ` Finn Thain
2011-11-25 3:15 ` Finn Thain
2011-11-28 0:30 ` Benjamin Herrenschmidt
2011-11-28 0:30 ` Benjamin Herrenschmidt
2011-11-24 15:28 ` David Laight
2011-11-24 15:28 ` David Laight
2011-11-24 20:43 ` Benjamin Herrenschmidt
2011-11-24 20:43 ` Benjamin Herrenschmidt
2011-12-06 15:13 ` [PATCH 01/16 v2] " Finn Thain
2011-12-06 15:13 ` Finn Thain
2011-12-06 15:27 ` Geert Uytterhoeven
2011-12-06 15:27 ` Geert Uytterhoeven
2011-12-07 1:26 ` Finn Thain
2011-12-07 1:26 ` Finn Thain
2011-12-06 15:39 ` Alan Cox
2011-12-06 15:39 ` Alan Cox
2011-12-07 3:49 ` [PATCH 01/16 v3] " Finn Thain
2011-12-07 3:49 ` Finn Thain
2011-12-08 3:17 ` Benjamin Herrenschmidt
2011-12-08 3:17 ` Benjamin Herrenschmidt
2011-12-08 4:20 ` Benjamin Herrenschmidt
2011-12-08 4:20 ` Benjamin Herrenschmidt
2011-12-08 4:30 ` Benjamin Herrenschmidt
2011-12-08 4:30 ` Benjamin Herrenschmidt
2011-12-08 11:26 ` Finn Thain
2011-12-08 11:26 ` Finn Thain
2011-12-08 11:54 ` Geert Uytterhoeven
2011-12-08 11:54 ` Geert Uytterhoeven
2011-12-08 19:44 ` Benjamin Herrenschmidt [this message]
2011-12-08 19:44 ` Benjamin Herrenschmidt
2011-12-11 23:48 ` Benjamin Herrenschmidt
2011-12-11 23:48 ` Benjamin Herrenschmidt
2011-12-11 23:55 ` Benjamin Herrenschmidt
2011-12-11 23:55 ` Benjamin Herrenschmidt
2011-12-12 13:34 ` Finn Thain
2011-12-12 13:34 ` Finn Thain
2011-12-12 20:06 ` Benjamin Herrenschmidt
2011-12-12 20:06 ` Benjamin Herrenschmidt
2011-12-13 1:24 ` Finn Thain
2011-12-13 1:24 ` Finn Thain
2011-10-23 14:11 ` [PATCH 02/16] macfb: fix black and white modes Finn Thain
2011-10-23 14:11 ` Finn Thain
2011-12-10 5:23 ` Finn Thain
2011-12-10 5:23 ` Finn Thain
2011-10-23 14:11 ` [PATCH 03/16] mac_sonic: add irq resources and cleanup Finn Thain
2011-11-13 10:28 ` Geert Uytterhoeven
2011-11-13 14:30 ` Finn Thain
2011-11-13 17:36 ` Geert Uytterhoeven
2011-12-10 5:23 ` Finn Thain
2011-10-23 14:11 ` [PATCH 04/16] m68k/mac: early console Finn Thain
2011-10-23 14:11 ` [PATCH 05/16] m68k/mac: cleanup mac_clear_irq Finn Thain
2011-10-23 14:11 ` [PATCH 06/16] m68k/mac: cleanup mac_irq_pending Finn Thain
2011-12-10 5:24 ` Finn Thain
2011-10-23 14:11 ` [PATCH 07/16] m68k/mac: cleanup forward declarations Finn Thain
2011-10-23 14:11 ` [PATCH 08/16] m68k/mac: enable via_alt_mapping on performa 580 Finn Thain
2011-10-23 14:11 ` [PATCH 09/16] m68k/mac: fix nubus slot irq disable and shutdown Finn Thain
2011-10-23 14:11 ` [PATCH 10/16] m68k/mac: oss irq fixes Finn Thain
2011-10-23 14:11 ` [PATCH 11/16] m68k/mac: fix baboon irq disable and shutdown Finn Thain
2011-10-23 14:11 ` [PATCH 12/16] m68k/mac: fix powerbook 150 adb_type Finn Thain
2011-10-23 14:11 ` [PATCH 13/16] mac_scsi: fix mac_scsi on some powerbooks Finn Thain
2011-12-10 5:24 ` Finn Thain
2011-10-23 14:11 ` [PATCH 14/16] m68k/mac: cleanup macro case Finn Thain
2011-10-23 14:11 ` [PATCH 15/16] mac_scsi: dont enable mac_scsi irq before requesting it Finn Thain
2011-12-10 5:24 ` Finn Thain
2011-10-23 14:11 ` [PATCH 16/16] mac_esp: rename irq Finn Thain
2011-12-10 5:24 ` Finn Thain
2011-10-31 18:35 ` [PATCH 00/16] more mac68k fixes and cleanup Geert Uytterhoeven
2011-10-31 19:16 ` Geert Uytterhoeven
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