linux-kernel - [077/117] tg3: Fix INTx fallback when MSI fails

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20100510223324.330497050@kvm.kroah.org>
Date:	Mon, 10 May 2010 15:32:48 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Andre Detsch <adetsch@...ibm.com>,
	Michael Chan <mchan@...adcom.com>,
	"David S. Miller" <davem@...emloft.net>,
	Brandon Philips <bphilips@...e.de>
Subject: [077/117] tg3: Fix INTx fallback when MSI fails

2.6.33-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Andre Detsch <adetsch@...ibm.com>

commit dc8bf1b1a6edfc92465526de19772061302f0929 upstream.

tg3: Fix INTx fallback when MSI fails

MSI setup changes the value of irq_vec in struct tg3 *tp.
This attribute must be taken into account and restored before
we try to do a new request_irq for INTx fallback.

In powerpc, the original code was leading to an EINVAL return within
request_irq, because the driver was trying to use the disabled MSI
virtual irq number instead of tp->pdev->irq.

Signed-off-by: Andre Detsch <adetsch@...ibm.com>
Acked-by: Michael Chan <mchan@...adcom.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Cc: Brandon Philips <bphilips@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/tg3.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -8572,6 +8572,7 @@ static int tg3_test_msi(struct tg3 *tp)
 	pci_disable_msi(tp->pdev);

 	tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
+	tp->napi[0].irq_vec = tp->pdev->irq;

 	err = tg3_request_irq(tp, 0);
 	if (err)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/