[PATCH 07/10 v3] Input: sun4i-ts: Handle return value of platform_get_irq
From: Arvind Yadav <hidden>
Date: 2017-11-18 10:56:59
Also in:
linux-arm-kernel, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
platform_get_irq() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <redacted>
---
changes in v2 :
ts->irq is unsigned. used int irq variable.
changes in v3 :
Add failure case '<= 0' instead of '< 0'. IRQ0 is not valid.
drivers/input/touchscreen/sun4i-ts.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/sun4i-ts.c b/drivers/input/touchscreen/sun4i-ts.c
index d2e14d9..315f26b 100644
--- a/drivers/input/touchscreen/sun4i-ts.c
+++ b/drivers/input/touchscreen/sun4i-ts.c@@ -251,6 +251,7 @@ static int sun4i_ts_probe(struct platform_device *pdev) bool ts_attached; u32 tp_sensitive_adjust = 15; u32 filter_type = 1; + int irq; ts = devm_kzalloc(dev, sizeof(struct sun4i_ts_data), GFP_KERNEL); if (!ts)
@@ -314,7 +315,10 @@ static int sun4i_ts_probe(struct platform_device *pdev) if (IS_ERR(ts->base)) return PTR_ERR(ts->base); - ts->irq = platform_get_irq(pdev, 0); + irq = platform_get_irq(pdev, 0); + if (irq <= 0) + return irq; + ts->irq = irq; error = devm_request_irq(dev, ts->irq, sun4i_ts_irq, 0, "sun4i-ts", ts); if (error) return error;
--
2.7.4