From 7d7275b3e866cf8092bd12553ec53ba26864f7bb Mon Sep 17 00:00:00 2001

From: Grygorii Strashko <grygorii.strashko@ti.com>

Date: Thu, 28 Jan 2021 21:15:48 +0200

Subject: [PATCH] bus: omap_l3_noc: mark l3 irqs as IRQF_NO_THREAD

Git-commit: 7d7275b3e866cf8092bd12553ec53ba26864f7bb

Patch-mainline: v5.12-rc5

References: git-fixes

The main purpose of l3 IRQs is to catch OCP bus access errors and identify

corresponding code places by showing call stack, so it's important to

handle L3 interconnect errors as fast as possible. On RT these IRQs will

became threaded and will be scheduled much more late from the moment actual

error occurred so showing completely useless information.

Hence, mark l3 IRQs as IRQF_NO_THREAD so they will not be forced threaded

on RT or if force_irqthreads = true.

Fixes: 0ee7261c9212 ("drivers: bus: Move the OMAP interconnect driver to drivers/bus/")

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>

Signed-off-by: Tony Lindgren <tony@atomide.com>

Acked-by: Takashi Iwai <tiwai@suse.de>

---

 drivers/bus/omap_l3_noc.c | 4 ++--

 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c

index b040447575ad..dcfb32ee5cb6 100644

--- a/drivers/bus/omap_l3_noc.c

+++ b/drivers/bus/omap_l3_noc.c

@@ -285,7 +285,7 @@ static int omap_l3_probe(struct platform_device *pdev)

 	 */

 	l3->debug_irq = platform_get_irq(pdev, 0);

 	ret = devm_request_irq(l3->dev, l3->debug_irq, l3_interrupt_handler,

-			       0x0, "l3-dbg-irq", l3);

+			       IRQF_NO_THREAD, "l3-dbg-irq", l3);

 	if (ret) {

 		dev_err(l3->dev, "request_irq failed for %d\n",

 			l3->debug_irq);

@@ -294,7 +294,7 @@ static int omap_l3_probe(struct platform_device *pdev)

 	l3->app_irq = platform_get_irq(pdev, 1);

 	ret = devm_request_irq(l3->dev, l3->app_irq, l3_interrupt_handler,

-			       0x0, "l3-app-irq", l3);

+			       IRQF_NO_THREAD, "l3-app-irq", l3);

 	if (ret)

 		dev_err(l3->dev, "request_irq failed for %d\n", l3->app_irq);

-- 

2.26.2