From: Andrey Borzenkov <arvidjaar@mail.ru>
Date: Fri, 10 Oct 2008 16:22:38 +0000 (+0400)
Subject: orinoco: fix unsafe locking in orinoco_cs_resume
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=552a71515eef5cba9af8bfe608149557059c4463;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

orinoco: fix unsafe locking in orinoco_cs_resume

[ 6972.562035] =================================
[ 6972.562040] [ INFO: inconsistent lock state ]
[ 6972.562048] 2.6.27-1avb #17
[ 6972.562053] ---------------------------------
[ 6972.562060] inconsistent {in-hardirq-W} -> {hardirq-on-W} usage.
[ 6972.562068] pm-suspend/17062 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 6972.562076]  (&priv->lock){++..}, at: [<dfd4f05b>] orinoco_cs_resume+0x5b/0xd0 [orinoco_cs]
[ 6972.562122] {in-hardirq-W} state was registered at:
[ 6972.562128]   [<c013ea6b>] __lock_acquire+0x6cb/0x1640
[ 6972.562171]   [<c013fa3c>] lock_acquire+0x5c/0x80
[ 6972.562181]   [<c02f6e39>] _spin_lock_irqsave+0x49/0x80
[ 6972.562210]   [<dfd6425d>] orinoco_interrupt+0x4d/0x16d0 [orinoco]
[ 6972.562257]   [<c015a2b1>] handle_IRQ_event+0x31/0x60
[ 6972.562278]   [<c015b73e>] handle_level_irq+0x6e/0xe0
[ 6972.562291]   [<c0104b20>] do_IRQ+0xb0/0x130
[ 6972.562313]   [<ffffffff>] 0xffffffff

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/orinoco_cs.c b/drivers/net/wireless/orinoco_cs.c
index 9eaa252c2430..65fd054e0172 100644
--- a/drivers/net/wireless/orinoco_cs.c
+++ b/drivers/net/wireless/orinoco_cs.c
@@ -403,6 +403,7 @@ static int orinoco_cs_resume(struct pcmcia_device *link)
 	struct orinoco_private *priv = netdev_priv(dev);
 	struct orinoco_pccard *card = priv->card;
 	int err = 0;
+	unsigned long flags;
 
 	if (! test_bit(0, &card->hard_reset_in_progress)) {
 		err = orinoco_reinit_firmware(dev);
@@ -412,7 +413,7 @@ static int orinoco_cs_resume(struct pcmcia_device *link)
 			return -EIO;
 		}
 
-		spin_lock(&priv->lock);
+		spin_lock_irqsave(&priv->lock, flags);
 
 		netif_device_attach(dev);
 		priv->hw_unavailable--;
@@ -424,7 +425,7 @@ static int orinoco_cs_resume(struct pcmcia_device *link)
 				       dev->name, err);
 		}
 
-		spin_unlock(&priv->lock);
+		spin_unlock_irqrestore(&priv->lock, flags);
 	}
 
 	return err;