linux-kernel - Re: [PATCH] typec: tcpm: Fix incorrect 'and' operator

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Date:   Wed, 2 May 2018 17:07:12 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] typec: tcpm: Fix incorrect 'and' operator

On Mon, Apr 30, 2018 at 08:23:06AM -0500, Gustavo A. R. Silva wrote:
> Currently, logical and is being used instead of *bitwise* and.
> 
> Fix this by using a proper bitwise and operator.
> 
> Addresses-Coverity-ID: 1468455 ("Logical vs. bitwise operator")
> Fixes: 64f7c494a3c0 ("typec: tcpm: Add support for sink PPS related
> messages")
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>

Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/usb/typec/tcpm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c
> index 1ee259b..7ee417a 100644
> --- a/drivers/usb/typec/tcpm.c
> +++ b/drivers/usb/typec/tcpm.c
> @@ -1772,7 +1772,7 @@ static void tcpm_pd_ext_msg_request(struct tcpm_port *port,
>  	enum pd_ext_msg_type type = pd_header_type_le(msg->header);
>  	unsigned int data_size = pd_ext_header_data_size_le(msg->ext_msg.header);
>  
> -	if (!(msg->ext_msg.header && PD_EXT_HDR_CHUNKED)) {
> +	if (!(msg->ext_msg.header & PD_EXT_HDR_CHUNKED)) {
>  		tcpm_log(port, "Unchunked extended messages unsupported");
>  		return;
>  	}

Thanks,

-- 
heikki