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net: ipa: use struct_size() for the interconnect array

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In review for commit 8ee7ec4890e2b ("net: ipa: embed interconnect
array in the power structure"), Jakub Kicinski suggested that a
follow-up patch use struct_size() when computing the size of the
IPA power structure, which ends with a flexible array member.

Do that.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20220311162423.872645-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alex Elder 2022-03-11 10:24:23 -06:00 committed by Jakub Kicinski
parent 0b3660695e
commit cb631a6398
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ipa/ipa_power.c
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@ -374,8 +374,8 @@ ipa_power_init(struct device *dev, const struct ipa_power_data *data)
goto err_clk_put;
}
size = data->interconnect_count * sizeof(power->interconnect[0]);
power = kzalloc(sizeof(*power) + size, GFP_KERNEL);
size = struct_size(power, interconnect, data->interconnect_count);
power = kzalloc(size, GFP_KERNEL);
if (!power) {
ret = -ENOMEM;
goto err_clk_put;