linux-kernel - [PATCH v2 net-next 2/2] nfc: s3fwrn5: Remove hard coded interrupt trigger type from the i2c module

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue,  8 Dec 2020 23:10:12 +0900
From:   Bongsu Jeon <bongsu.jeon2@...il.com>
To:     krzk@...nel.org
Cc:     linux-nfc@...ts.01.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bongsu Jeon <bongsu.jeon@...sung.com>
Subject: [PATCH v2 net-next 2/2] nfc: s3fwrn5: Remove hard coded interrupt trigger type from the i2c module

From: Bongsu Jeon <bongsu.jeon@...sung.com>

For the flexible control of interrupt trigger type, remove the hard coded
interrupt trigger type in the i2c module. The trigger type will be loaded
 from a dts.

Signed-off-by: Bongsu Jeon <bongsu.jeon@...sung.com>
---
 drivers/nfc/s3fwrn5/i2c.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c
index e1bdde105f24..42f1f610ac2c 100644
--- a/drivers/nfc/s3fwrn5/i2c.c
+++ b/drivers/nfc/s3fwrn5/i2c.c
@@ -179,6 +179,8 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
 				  const struct i2c_device_id *id)
 {
 	struct s3fwrn5_i2c_phy *phy;
+	struct irq_data *irq_data;
+	unsigned long irqflags;
 	int ret;
 
 	phy = devm_kzalloc(&client->dev, sizeof(*phy), GFP_KERNEL);
@@ -212,8 +214,11 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
+	irq_data = irq_get_irq_data(client->irq);
+	irqflags = irqd_get_trigger_type(irq_data) | IRQF_ONESHOT;
+
 	ret = devm_request_threaded_irq(&client->dev, phy->i2c_dev->irq, NULL,
-		s3fwrn5_i2c_irq_thread_fn, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+		s3fwrn5_i2c_irq_thread_fn, irqflags,
 		S3FWRN5_I2C_DRIVER_NAME, phy);
 	if (ret)
 		s3fwrn5_remove(phy->common.ndev);
-- 
2.17.1