Liang Jie <buaajxlj@xxxxxxx> wrote:
> From: Liang Jie <liangjie@xxxxxxxxxxx>
>
> Ensures the correct calculation of `cfg_len` prior to the allocation of
> the skb in the `rtw89_fw_h2c_scan_offload_be` function, particularly when
> the `SCAN_OFFLOAD_BE_V0` firmware feature is enabled. It addresses an
> issue where an incorrect skb size might be allocated due to a delayed
> setting of `cfg_len`, potentially leading to memory inefficiencies.
>
> By moving the conditional check and assignment of `cfg_len` before skb
> allocation, the patch guarantees that `len`, which depends on `cfg_len`,
> is accurately computed, ensuring proper skb size and preventing any
> unnecessary memory reservation for firmware operations not supporting
> beyond the `w8` member of the command data structure.
>
> This correction helps to optimize memory usage and maintain consistent
> behavior across different firmware versions.
>
> Fixes: 6ca6b918f280 ("wifi: rtw89: 8922a: Add new fields for scan offload H2C command")
> Signed-off-by: Liang Jie <liangjie@xxxxxxxxxxx>
Acked-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
