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

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Date:   Mon,  7 Mar 2022 11:36:30 -0300
From:   Alifer Moraes <alifer.m@...iscite.com>
To:     linux-kernel@...r.kernel.org
Cc:     eran.m@...iscite.com, festevam@...il.com, kernel@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org, linux-imx@....com,
        linux-i2c@...r.kernel.org, linux@...pel-privat.de,
        pierluigi.p@...iscite.com, s.hauer@...gutronix.de,
        shawnguo@...nel.org, gaopan <b54642@...escale.com>,
        Fugang Duan <B38611@...escale.com>,
        Vipul Kumar <vipul_kumar@...tor.com>
Subject: [PATCH] i2c: imx: add irqf_no_suspend

From: gaopan <b54642@...escale.com>

The i2c irq is masked when pcie starts a 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: Gao Pan <b54642@...escale.com>
Signed-off-by: Fugang Duan <B38611@...escale.com>
Signed-off-by: Vipul Kumar <vipul_kumar@...tor.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 27f969b3dc07..fcc09a1e7f44 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1478,7 +1478,8 @@ 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);
-- 
2.25.1