linux-kernel - [PATCH] omap_l3_smx.c: remove IRQF

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Date:	Mon,  2 Mar 2015 14:35:53 +0100
From:	Valentin Rothberg <Valentin.Rothberg@...6.fr>
To:	tony@...mide.com, ssantosh@...nel.org, linux-kernel@...r.kernel.org
Cc:	Valentin Rothberg <Valentin.Rothberg@...6.fr>
Subject: [PATCH] omap_l3_smx.c: remove IRQF_DISABLED flag

The IRQF_DISABLED flag is a NOOP and scheduled to be removed.  According
to commit e58aa3d2d0cc ("genirq: Run irq handlers with interrupts
disabled") running IRQ handlers with interrupts enabled can cause stack
overflows when the interrupt line of the issuing device is still active.

Signed-off-by: Valentin Rothberg <Valentin.Rothberg@...6.fr>
---
 drivers/bus/omap_l3_smx.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/bus/omap_l3_smx.c b/drivers/bus/omap_l3_smx.c
index 597fdae..360a5c0 100644
--- a/drivers/bus/omap_l3_smx.c
+++ b/drivers/bus/omap_l3_smx.c
@@ -251,18 +251,16 @@ static int omap3_l3_probe(struct platform_device *pdev)
 	}
 
 	l3->debug_irq = platform_get_irq(pdev, 0);
-	ret = request_irq(l3->debug_irq, omap3_l3_app_irq,
-		IRQF_DISABLED | IRQF_TRIGGER_RISING,
-		"l3-debug-irq", l3);
+	ret = request_irq(l3->debug_irq, omap3_l3_app_irq, IRQF_TRIGGER_RISING,
+			  "l3-debug-irq", l3);
 	if (ret) {
 		dev_err(&pdev->dev, "couldn't request debug irq\n");
 		goto err1;
 	}
 
 	l3->app_irq = platform_get_irq(pdev, 1);
-	ret = request_irq(l3->app_irq, omap3_l3_app_irq,
-		IRQF_DISABLED | IRQF_TRIGGER_RISING,
-		"l3-app-irq", l3);
+	ret = request_irq(l3->app_irq, omap3_l3_app_irq, IRQF_TRIGGER_RISING,
+			  "l3-app-irq", l3);
 	if (ret) {
 		dev_err(&pdev->dev, "couldn't request app irq\n");
 		goto err2;
-- 
1.9.1

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