Re: 2.6.13-rc3: swsusp works (TP 600X)

["Rafael J. Wysocki" <rjw@sisk.pl>]

On Thursday, 28 of July 2005 23:36, Pavel Machek wrote:
> Hi!
> 
> > >>If I don't eject the pcmcia card (usually a prism54 wireless card),
> > >>swsusp begins the process of hibernation, but never gets to the
> > >>writing pages part.
> > 
> > > Well, it really may be the firmware loading. Add some printks to
> > > confirm it, then fix it.
> > 
> > I did more tests, this time with 2.6.13-rc3-mm2 (machine is a TP 600X),
> > and I don't think the problem is related to firmware loading.  If I
> > first physically eject the card (an Intersil wireless card), swsusp
> > prints
> > 
> ..
> > 
> > then it writes pages to swap and all is well.  Well, almost 100%; the
> > one glitch is that sometimes X comes back blank and I have to
> > ctrl-alt-F7 to bring back the display; or X comes back with the keyboard
> > acting strange (<ENTER> shifts the display left by a few hundred
> > pixels), and again ctrl-alt-F7 fixes it.  This is with XFree86
> > 4.3.0.dfsg.1-14, and maybe after I upgrade (?) to the xorg server, that
> > glitch will go away.  Anyway, it's easy to work around.
> 
> So, in short, problem is that if you leave prism54 card in, even with
> module removed, swsusp hangs, right?
> 
> Okay then, start looking into pcmcia layer ;-).

Perhaps the patch from Daniel Ritz to free the yenta IRQ on suspend (attached)
will help?

Rafael


-- 
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
		-- Lewis Carroll "Alice's Adventures in Wonderland"

--- linux-2.6.13-rc3-git5/drivers/pcmcia/yenta_socket.c	2005-07-23 19:26:30.000000000 +0200
+++ patched/drivers/pcmcia/yenta_socket.c	2005-07-24 11:44:04.000000000 +0200
@@ -1107,6 +1107,8 @@ static int yenta_dev_suspend (struct pci
 		pci_read_config_dword(dev, 17*4, &socket->saved_state[1]);
 		pci_disable_device(dev);
 
+		free_irq(dev->irq, socket);
+
 		/*
 		 * Some laptops (IBM T22) do not like us putting the Cardbus
 		 * bridge into D3.  At a guess, some other laptop will
@@ -1132,6 +1134,13 @@ static int yenta_dev_resume (struct pci_
 		pci_enable_device(dev);
 		pci_set_master(dev);
 
+		if (socket->cb_irq)
+			if (request_irq(socket->cb_irq, yenta_interrupt,
+			                SA_SHIRQ, "yenta", socket)) {
+				printk(KERN_WARNING "Yenta: request_irq() failed on resume!\n");
+				socket->cb_irq = 0;
+			}
+
 		if (socket->type && socket->type->restore_state)
 			socket->type->restore_state(socket);
 	}