linux-kernel - Re: [PATCH] drivers: staging: rtl8192e: make const qualified argument

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Message-ID: <20170823013603.GC3319@kroah.com>
Date:   Tue, 22 Aug 2017 18:36:03 -0700
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Himanshu Jha <himanshujha199640@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: staging: rtl8192e: make const qualified argument

On Tue, Aug 22, 2017 at 09:01:02PM +0530, Himanshu Jha wrote:
> The ether_addr_copy expects const u8* as its second argument, therefore
> pass const qualified argument instead of non-const argument.

Huh, why?

> 
> Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
> ---
>  drivers/staging/rtl8192e/rtl819x_BAProc.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)

Always use scripts/get_maintainer.pl on your patch to know who to send
it to, and what lists as well.

> 
> diff --git a/drivers/staging/rtl8192e/rtl819x_BAProc.c b/drivers/staging/rtl8192e/rtl819x_BAProc.c
> index 1720e1b..f34a4ee 100644
> --- a/drivers/staging/rtl8192e/rtl819x_BAProc.c
> +++ b/drivers/staging/rtl8192e/rtl819x_BAProc.c
> @@ -97,10 +97,9 @@ static struct sk_buff *rtllib_ADDBA(struct rtllib_device *ieee, u8 *Dst,
>  
>  	BAReq = skb_put(skb, sizeof(struct rtllib_hdr_3addr));
>  
> -	ether_addr_copy(BAReq->addr1, Dst);
> -	ether_addr_copy(BAReq->addr2, ieee->dev->dev_addr);
> -
> -	ether_addr_copy(BAReq->addr3, ieee->current_network.bssid);
> +	ether_addr_copy(BAReq->addr1, (const u8 *)Dst);
> +	ether_addr_copy(BAReq->addr2, (const u8 *)ieee->dev->dev_addr);
> +	ether_addr_copy(BAReq->addr3, (const u8 *)ieee->current_network.bssid);

I don't understand what this patch "solves"...

thanks,

greg k-h