Re: [PATCH V3] wifi: ath6kl: Replace ath6kl_usb_submit_ctrl_in with usb_control_msg_recv

[Greg KH]

On Mon, Aug 26, 2024 at 07:19:09PM +0800, Edward Adam Davis wrote:
> ath6kl_usb_submit_ctrl_in() did not take into account the situation where
> the length of the data read from the device is not equal to the len, and
> such missing judgments will result in subsequent code using incorrect data.
> 
> usb_control_msg_recv() handles the abnormal length of the returned data,
> so using it directly can fix this warning.
> 
> Reported-by: syzbot+92c6dd14aaa230be6855@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Edward Adam Davis <eadavis@xxxxxx>
> ---
> V2 -> V3: Adjust indentation style
> 
>  drivers/net/wireless/ath/ath6kl/usb.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/wireless/ath/ath6kl/usb.c b/drivers/net/wireless/ath/ath6kl/usb.c
> index 5220809841a6..5b1ce4f9ed54 100644
> --- a/drivers/net/wireless/ath/ath6kl/usb.c
> +++ b/drivers/net/wireless/ath/ath6kl/usb.c
> @@ -1027,9 +1027,11 @@ static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len)
>  	int ret;
>  
>  	/* get response */
> -	ret = ath6kl_usb_submit_ctrl_in(ar_usb,
> -					ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP,
> -					0, 0, buf, len);

Again, please make this a patch series, with the second one removing
ath6kl_usb_submit_ctrl_in() and moving to use usb_control_msg_recv() for
that too.

thanks,

greg k-h