platform_get_irq() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <[email protected]>
---
changes in v2 :
Add failure case '<= 0' instead of '< 0'. If IRQ0 is not valid.
changes in v3 :
return -EINVAL insted of irq.
drivers/mfd/sun4i-gpadc.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/mfd/sun4i-gpadc.c b/drivers/mfd/sun4i-gpadc.c
index 9cfc881..79a39fe 100644
--- a/drivers/mfd/sun4i-gpadc.c
+++ b/drivers/mfd/sun4i-gpadc.c
@@ -100,8 +100,8 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
struct resource *mem;
const struct of_device_id *of_id;
const struct mfd_cell *cells;
- unsigned int irq, size;
- int ret;
+ unsigned int size;
+ int ret, irq;
of_id = of_match_node(sun4i_gpadc_of_match, pdev->dev.of_node);
if (!of_id)
@@ -148,6 +148,9 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
regmap_write(dev->regmap, SUN4I_GPADC_INT_FIFOC, 0);
irq = platform_get_irq(pdev, 0);
+ if (irq <= 0)
+ return -EINVAL;
+
ret = devm_regmap_add_irq_chip(&pdev->dev, dev->regmap, irq,
IRQF_ONESHOT, 0,
&sun4i_gpadc_regmap_irq_chip,
--
2.7.4
From 1584465046298683559@xxx Sun Nov 19 03:53:39 +0000 2017
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