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Input: cpcap-pwrbutton - handle errors from platform_get_irq()

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The function cpcap_power_button_probe() does not perform
sufficient error checking after executing platform_get_irq(),
thus fix it.

Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20210802121740.8700-1-tangbin@cmss.chinamobile.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Tang Bin 2021-09-05 18:57:32 -07:00 committed by Dmitry Torokhov
parent 3e204d6b76
commit 58ae4004b9
1 changed files with 5 additions and 1 deletions
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6
drivers/input/misc/cpcap-pwrbutton.c
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@ -54,9 +54,13 @@ static irqreturn_t powerbutton_irq(int irq, void *_button)
static int cpcap_power_button_probe(struct platform_device *pdev) static int cpcap_power_button_probe(struct platform_device *pdev)
{ {
struct cpcap_power_button *button; struct cpcap_power_button *button;
int irq = platform_get_irq(pdev, 0); int irq;
int err; int err;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
button = devm_kmalloc(&pdev->dev, sizeof(*button), GFP_KERNEL); button = devm_kmalloc(&pdev->dev, sizeof(*button), GFP_KERNEL);
if (!button) if (!button)
return -ENOMEM; return -ENOMEM;