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brcmfmac: Replace zero-length array with flexible array member

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There is a regular need in the kernel to provide a way to declare
having a dynamically sized set of trailing elements in a structure.
Kernel code should always use "flexible array members"[1] for these
cases. The older style of one-element or zero-length arrays should
no longer be used[2].

Also, make use of the struct_size() helper in devm_kzalloc().

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.14/process/deprecated.html#zero-length-and-one-element-arrays

Signed-off-by: Len Baker <len.baker@gmx.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210904092217.2848-1-len.baker@gmx.com
This commit is contained in:
Len Baker 2021-09-04 11:22:17 +02:00 committed by Kalle Valo
parent 60fe1f8dcd
commit 3fd445a4d4
2 changed files with 2 additions and 2 deletions
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2
drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
View file

@ -29,7 +29,7 @@ static int brcmf_of_get_country_codes(struct device *dev,
return (count == -EINVAL) ? 0 : count;
}
cc = devm_kzalloc(dev, sizeof(*cc) + count * sizeof(*cce), GFP_KERNEL);
cc = devm_kzalloc(dev, struct_size(cc, table, count), GFP_KERNEL);
if (!cc)
return -ENOMEM;

2
include/linux/platform_data/brcmfmac.h
View file

@ -125,7 +125,7 @@ struct brcmfmac_pd_cc_entry {
*/
struct brcmfmac_pd_cc {
int table_size;
struct brcmfmac_pd_cc_entry table[0];
struct brcmfmac_pd_cc_entry table[];
};
/**