linux-kernel - [150/152] orinoco: initialise priv->hw before assigning the interrupt

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Date:	Wed, 05 Jan 2011 16:24:09 -0800
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,
	"John W. Linville" <linville@...driver.com>
Subject: [150/152] orinoco: initialise priv->hw before assigning the interrupt

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

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

From: David Kilroy <kilroyd@...glemail.com>

commit 229bd792be0bad245b78ed8f119952733a4752e5 upstream.

The interrupt handler takes a lock - but since commit bcad6e80f3f this
lock goes through an indirection specified in the hermes_t structure.
We must therefore initialise the structure before setting up the
interrupt handler.

Fix orinoco_cs and spectrum_cs

<https://bugzilla.kernel.org/show_bug.cgi?id=23932>

Bisected by: Matt Domsch <Matt_Domsch@...l.com>
Signed-off by: David Kilroy <kilroyd@...glemail.com>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/wireless/orinoco/orinoco_cs.c  |   14 +++++++-------
 drivers/net/wireless/orinoco/spectrum_cs.c |   14 +++++++-------
 2 files changed, 14 insertions(+), 14 deletions(-)

--- a/drivers/net/wireless/orinoco/orinoco_cs.c
+++ b/drivers/net/wireless/orinoco/orinoco_cs.c
@@ -248,20 +248,20 @@ orinoco_cs_config(struct pcmcia_device *
 		goto failed;
 	}
 
-	ret = pcmcia_request_irq(link, orinoco_interrupt);
-	if (ret)
-		goto failed;
-
-	/* We initialize the hermes structure before completing PCMCIA
-	 * configuration just in case the interrupt handler gets
-	 * called. */
 	mem = ioport_map(link->resource[0]->start,
 			resource_size(link->resource[0]));
 	if (!mem)
 		goto failed;
 
+	/* We initialize the hermes structure before completing PCMCIA
+	 * configuration just in case the interrupt handler gets
+	 * called. */
 	hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
 
+	ret = pcmcia_request_irq(link, orinoco_interrupt);
+	if (ret)
+		goto failed;
+
 	/*
 	 * This actually configures the PCMCIA socket -- setting up
 	 * the I/O windows and the interrupt mapping, and putting the
--- a/drivers/net/wireless/orinoco/spectrum_cs.c
+++ b/drivers/net/wireless/orinoco/spectrum_cs.c
@@ -310,21 +310,21 @@ spectrum_cs_config(struct pcmcia_device
 		goto failed;
 	}
 
-	ret = pcmcia_request_irq(link, orinoco_interrupt);
-	if (ret)
-		goto failed;
-
-	/* We initialize the hermes structure before completing PCMCIA
-	 * configuration just in case the interrupt handler gets
-	 * called. */
 	mem = ioport_map(link->resource[0]->start,
 			resource_size(link->resource[0]));
 	if (!mem)
 		goto failed;
 
+	/* We initialize the hermes structure before completing PCMCIA
+	 * configuration just in case the interrupt handler gets
+	 * called. */
 	hermes_struct_init(hw, mem, HERMES_16BIT_REGSPACING);
 	hw->eeprom_pda = true;
 
+	ret = pcmcia_request_irq(link, orinoco_interrupt);
+	if (ret)
+		goto failed;
+
 	/*
 	 * This actually configures the PCMCIA socket -- setting up
 	 * the I/O windows and the interrupt mapping, and putting the


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