[BUG? KERNEL 2.6.34-rc5-git5] pccard_validate_cis WARN_ON error

Dominik Brodowski linux at dominikbrodowski.net
Thu Apr 29 09:59:14 EDT 2010


On Thu, Apr 29, 2010 at 05:17:07PM +0900, Komuro wrote:
> >> WARNING: at drivers/pcmcia/cistpl.c:1488 pccard_validate_cis+0x32/0x2c6()
> >
> >is a call trace printed? If so, what is it?
> Here is the call trace.

Thanks! Does this patch help?

From: Dominik Brodowski <linux at dominikbrodowski.net>
Date: Thu, 29 Apr 2010 15:56:25 +0200
Subject: [PATCH] pcmcia: avoid pccard_validate_cis failure in resume callpath

If the PCMCIA CIS changed before a resume event (e.g. due to
a card exchange while being suspended, possibly also during
a call to "pccardctl reset"), also set the function count to
zero so that the subsequent call to pccard_validate_cis() does
not fail.

Signed-off-by: Dominik Brodowski <linux at dominikbrodowski.net>

diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 508f94a..041eee4 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -1283,6 +1283,7 @@ static int ds_event(struct pcmcia_socket *skt, event_t event, int priority)
 			skt->fake_cis = NULL;
+			s->functions = 0;
 			/* now, add the new card */
 			ds_event(skt, CS_EVENT_CARD_INSERTION,

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