linux-kernel - [PATCH 5/6] media: adv7180: Only request valids IRQs

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Message-Id: <20240410-smatch-v1-5-785d009a852b@chromium.org>
Date: Wed, 10 Apr 2024 21:54:42 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Yasunari Takiguchi <Yasunari.Takiguchi@...y.com>, 
 Jean-Christophe Trotin <jean-christophe.trotin@...s.st.com>, 
 Lars-Peter Clausen <lars@...afoo.de>, 
 Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>, linux-media@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-input@...r.kernel.org, 
 Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH 5/6] media: adv7180: Only request valids IRQs

i2c_device_probe(), seems to assume that irq = 0 means that there is no
irq to request.

The driver also believes that on the clean path. So lets be consistent
here.

Also make smatch happy.

Fix:
drivers/media/i2c/adv7180.c:1526 adv7180_probe() warn: 'client->irq' from request_threaded_irq() not released on lines: 1526

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
 drivers/media/i2c/adv7180.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 4829cbe324198..819ff9f7c90fe 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1486,7 +1486,7 @@ static int adv7180_probe(struct i2c_client *client)
 	if (ret)
 		goto err_media_entity_cleanup;
 
-	if (state->irq) {
+	if (state->irq > 0) {
 		ret = request_threaded_irq(client->irq, NULL, adv7180_irq,
 					   IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
 					   KBUILD_MODNAME, state);

-- 
2.44.0.478.gd926399ef9-goog