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rpmsg: use struct_size over open coded arithmetic

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Replace zero-length array with flexible-array member and make use
of the struct_size() helper in kzalloc(). For example:

struct glink_defer_cmd {
	struct list_head node;

	struct glink_msg msg;
	u8 data[];
};

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

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220216030720.1839503-1-chi.minghao@zte.com.cn
This commit is contained in:
Minghao Chi (CGEL ZTE) 2022-02-16 03:07:20 +00:00 committed by Bjorn Andersson
parent a8f8cc6b39
commit 18fc82d6e8
1 changed files with 1 additions and 1 deletions
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2
drivers/rpmsg/qcom_glink_native.c
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@ -792,7 +792,7 @@ static int qcom_glink_rx_defer(struct qcom_glink *glink, size_t extra)
return -ENXIO;
}
dcmd = kzalloc(sizeof(*dcmd) + extra, GFP_ATOMIC);
dcmd = kzalloc(struct_size(dcmd, data, extra), GFP_ATOMIC);
if (!dcmd)
return -ENOMEM;