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iwlwifi: dvm: 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 kmalloc(). For example:

struct iwl_wipan_noa_data {
    ...
    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>
Link: https://lore.kernel.org/r/20220210060926.1608378-1-chi.minghao@zte.com.cn
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Minghao Chi (CGEL ZTE) 2022-02-10 06:09:26 +00:00 committed by Luca Coelho
parent 1132f6de0b
commit c7d0abfde9
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/intel/iwlwifi/dvm/rx.c
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@ -915,7 +915,7 @@ static void iwlagn_rx_noa_notification(struct iwl_priv *priv,
len += 1 + 2;
copylen += 1 + 2;
new_data = kmalloc(sizeof(*new_data) + len, GFP_ATOMIC);
new_data = kmalloc(struct_size(new_data, data, len), GFP_ATOMIC);
if (new_data) {
new_data->length = len;
new_data->data[0] = WLAN_EID_VENDOR_SPECIFIC;