linux-kernel - [PATCH] i2c: imx: add irqf_no

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Date:   Wed, 16 Nov 2022 15:44:31 +0800
From:   Clark Wang <xiaoning.wang@....com>
To:     linux@...pel-privat.de
Cc:     kernel@...gutronix.de, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, linux-imx@....com, linux-i2c@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] i2c: imx: add irqf_no_suspend flag

The i2c irq is masked when user starts an i2c transfer process
during noirq suspend stage. As a result, i2c transfer fails.
To solve the problem, IRQF_NO_SUSPEND is added to i2c bus.

Signed-off-by: Clark Wang <xiaoning.wang@....com>
---
 drivers/i2c/busses/i2c-imx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 1ce0cf7a323f..ba49b2f7a1d1 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1510,7 +1510,8 @@ static int i2c_imx_probe(struct platform_device *pdev)
 		goto rpm_disable;
 
 	/* Request IRQ */
-	ret = request_threaded_irq(irq, i2c_imx_isr, NULL, IRQF_SHARED,
+	ret = request_threaded_irq(irq, i2c_imx_isr, NULL,
+				   IRQF_SHARED | IRQF_NO_SUSPEND,
 				   pdev->name, i2c_imx);
 	if (ret) {
 		dev_err(&pdev->dev, "can't claim irq %d\n", irq);
-- 
2.34.1