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irqchip/imx-intmux: Use struct_size() helper in devm_kzalloc()

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Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200616230923.GA24937@embeddedor
This commit is contained in:
Gustavo A. R. Silva 2020-06-16 18:09:23 -05:00 committed by Marc Zyngier
parent 6eeb997ab5
commit 2f7a9bda42
1 changed files with 1 additions and 2 deletions
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3
drivers/irqchip/irq-imx-intmux.c
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@ -210,8 +210,7 @@ static int imx_intmux_probe(struct platform_device *pdev)
return -EINVAL;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data) +
channum * sizeof(data->irqchip_data[0]), GFP_KERNEL);
data = devm_kzalloc(&pdev->dev, struct_size(data, irqchip_data, channum), GFP_KERNEL);
if (!data)
return -ENOMEM;