Thread (38 messages) 38 messages, 3 authors, 2020-04-28
STALE2279d

[PATCH RT 02/30] i2c: hix5hd2: Remove IRQF_ONESHOT

From: Steven Rostedt <rostedt@goodmis.org>
Date: 2020-01-23 20:41:09
Also in: lkml
Subsystem: i2c subsystem, i2c subsystem host drivers, the rest · Maintainers: Andi Shyti, Linus Torvalds

4.19.94-rt39-rc2 stable review patch.
If anyone has any objections, please let me know.

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

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

[ Upstream commit e88b481f3f86f11e3243e0808a830e5ca5782a9d ]

The drivers sets IRQF_ONESHOT and passes only a primary handler. The IRQ
is masked while the primary is handler is invoked independently of
IRQF_ONESHOT.
With IRQF_ONESHOT the core code will not force-thread the interrupt and
this is probably not intended. I *assume* that the original author copied
the IRQ registration from another driver which passed a primary and
secondary handler and removed the secondary handler but keeping the
ONESHOT flag.

Remove IRQF_ONESHOT.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 drivers/i2c/busses/i2c-hix5hd2.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-hix5hd2.c b/drivers/i2c/busses/i2c-hix5hd2.c
index 061a4bfb03f4..575aff50b19a 100644
--- a/drivers/i2c/busses/i2c-hix5hd2.c
+++ b/drivers/i2c/busses/i2c-hix5hd2.c
@@ -449,8 +449,7 @@ static int hix5hd2_i2c_probe(struct platform_device *pdev)
 	hix5hd2_i2c_init(priv);
 
 	ret = devm_request_irq(&pdev->dev, irq, hix5hd2_i2c_irq,
-			       IRQF_NO_SUSPEND | IRQF_ONESHOT,
-			       dev_name(&pdev->dev), priv);
+			       IRQF_NO_SUSPEND, dev_name(&pdev->dev), priv);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "cannot request HS-I2C IRQ %d\n", irq);
 		goto err_clk;
-- 
2.24.1

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