linux-kernel - Re: [PATCH] staging: wilc1000: fix cast to restricted __le32

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Message-ID: <20190107125437.GA3200@kadam>
Date:   Mon, 7 Jan 2019 15:54:37 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Július Milan <julikmilan@...il.com>,
        kbuild test robot <lkp@...el.com>
Cc:     linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        gregkh@...uxfoundation.org, ajay.kathat@...rochip.com,
        linux-wireless@...r.kernel.org, adham.abozaeid@...rochip.com
Subject: Re: [PATCH] staging: wilc1000: fix cast to restricted __le32

I'm sort of surprised that the zero day bot didn't complain about this.
It probably should.

The endianness checking is not turned on by default in Sparse.  You have
to do "make C=1 CF=-D__CHECK_ENDIAN__" to turn it on.

regards,
dan carpenter

On Sat, Jan 05, 2019 at 09:23:23AM +0100, Július Milan wrote:
> Fixes the following sparse warnings:
> 
> drivers/staging/wilc1000/host_interface.c:2360:30: warning:
>  incorrect type in assignment (different base types)
>     expected restricted __le32 [addressable] [assigned] [usertype] frame_type
>     got restricted __le16 [usertype] <noident>
> 
> Fixes: 147ccfd451024 ("staging: wilc1000: handle mgmt_frame_register ops from cfg82011 context")
> Signed-off-by: Július Milan <jmilan.dev@...il.com>
> ---
>  drivers/staging/wilc1000/host_interface.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/wilc1000/host_interface.c b/drivers/staging/wilc1000/host_interface.c
> index 5dae6e7155d3..07c3d6293573 100644
> --- a/drivers/staging/wilc1000/host_interface.c
> +++ b/drivers/staging/wilc1000/host_interface.c
> @@ -2357,7 +2357,7 @@ void wilc_frame_register(struct wilc_vif *vif, u16 frame_type, bool reg)
>  	default:
>  		break;
>  	}
> -	reg_frame.frame_type = cpu_to_le16(frame_type);
> +	reg_frame.frame_type = cpu_to_le32(frame_type);
>  	result = wilc_send_config_pkt(vif, WILC_SET_CFG, &wid, 1,
>  				      wilc_get_vif_idx(vif));
>  	if (result)
> -- 
> 2.14.5
> 
> _______________________________________________
> devel mailing list
> devel@...uxdriverproject.org
> http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

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