linux-kernel - [PATCH] genirq: fix incorrect proc spurious output

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Date:	Tue, 30 Nov 2010 17:36:08 +0900
From:	Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>
To:	tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: [PATCH] genirq: fix incorrect proc spurious output

Fix the problem that all the /proc/irq/XX/spurious files shows the IRQ
0 information.

Current irq_spurious_proc_open() passes on NULL as the 3rd argument,
which is used as an IRQ number in irq_spurious_proc_show(), to the
single_open(). Because of this, all the /proc/irq/XX/spurious file
shows IRQ 0 information regardless of the IRQ number.

To fix the problem, irq_spurious_proc_open() must pass on the
appropreate data (IRQ number) to single_open().

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@...fujitsu.com>

---
 kernel/irq/proc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-next-20101125/kernel/irq/proc.c
===================================================================
--- linux-next-20101125.orig/kernel/irq/proc.c
+++ linux-next-20101125/kernel/irq/proc.c
@@ -214,7 +214,7 @@ static int irq_spurious_proc_show(struct
 
 static int irq_spurious_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, irq_spurious_proc_show, NULL);
+	return single_open(file, irq_spurious_proc_show, PDE(inode)->data);
 }
 
 static const struct file_operations irq_spurious_proc_fops = {

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