AcoSail/kernel_optimize_test
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leds: ns2: Use struct_size() 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. Also, remove unnecessary
function sizeof_ns2_led_priv().

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: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
Gustavo A. R. Silva 2020-06-17 18:07:57 -05:00 committed by Pavel Machek
parent c4e9441392
commit a7ad53cb66
1 changed files with 1 additions and 8 deletions
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9
drivers/leds/leds-ns2.c
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@ -348,12 +348,6 @@ struct ns2_led_priv {
struct ns2_led_data leds_data[];
};
static inline int sizeof_ns2_led_priv(int num_leds)
{
return sizeof(struct ns2_led_priv) +
(sizeof(struct ns2_led_data) * num_leds);
}
static int ns2_led_probe(struct platform_device *pdev)
{
struct ns2_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
@ -378,8 +372,7 @@ static int ns2_led_probe(struct platform_device *pdev)
return -EINVAL;
#endif /* CONFIG_OF_GPIO */
priv = devm_kzalloc(&pdev->dev,
sizeof_ns2_led_priv(pdata->num_leds), GFP_KERNEL);
priv = devm_kzalloc(&pdev->dev, struct_size(priv, leds_data, pdata->num_leds), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->num_leds = pdata->num_leds;