linux-kernel - [patch 2.6.26-git] genirq: better warning on irqchip->set

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Message-Id: <200807241750.25507.david-b@pacbell.net>
Date:	Thu, 24 Jul 2008 17:50:25 -0700
From:	David Brownell <david-b@...bell.net>
To:	Uwe Kleine-König <Uwe.Kleine-Koenig@...i.com>,
	lkml <linux-kernel@...r.kernel.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [patch 2.6.26-git] genirq:  better warning on irqchip->set_type() failure

From: David Brownell <dbrownell@...rs.sourceforge.net>

While I'm glad to finally see the hole fixed whereby passing an
invalid IRQ trigger type to request_irq() would be ignored, the
current diagnostic isn't quite useful.  Fixed by also listing
the trigger type which was rejected.

Signed-off-by: David Brownell <dbrownell@...rs.sourceforge.net>

--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -326,8 +326,8 @@ static int __irq_set_trigger(struct irq_chip *chip, unsigned int irq,
 	ret = chip->set_type(irq, flags & IRQF_TRIGGER_MASK);
 
 	if (ret)
-		pr_err("setting flow type for irq %u failed (%pF)\n",
-				irq, chip->set_type);
+		pr_err("setting trigger type %d for irq %u failed (%pF)\n",
+				flags & IRQF_TRIGGER_MASK, irq, chip->set_type);
 
 	return ret;
 }
--
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