linux-kernel - Re: [PATCH net-next v2 3/3] ptp: ptp_ines: use new PTP_MSGTYPE

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Message-ID: <5337022.CNZMXmNBYT@n95hx1g2>
Date:   Thu, 19 Nov 2020 06:28:00 +0100
From:   Christian Eggers <ceggers@...i.de>
To:     Jacob Keller <jacob.e.keller@...el.com>
CC:     Richard Cochran <richardcochran@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vladimir Oltean <olteanv@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Kurt Kanzenbach <kurt@...utronix.de>
Subject: Re: [PATCH net-next v2 3/3] ptp: ptp_ines: use new PTP_MSGTYPE_* define(s)

On Wednesday, 18 November 2020, 22:03:56 CET, Jacob Keller wrote:
> On 11/18/2020 8:22 AM, Christian Eggers wrote:
> > Remove driver internal defines for this.
> > 
> > Signed-off-by: Christian Eggers <ceggers@...i.de>
> > Cc: Richard Cochran <richardcochran@...il.com>
> > Cc: Kurt Kanzenbach <kurt@...utronix.de>
> > ---
> > 
> >  drivers/ptp/ptp_ines.c | 19 +++++++------------
> >  1 file changed, 7 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/ptp/ptp_ines.c b/drivers/ptp/ptp_ines.c
> > index 4700ffbdfced..6c7c2843ba0b 100644
> > --- a/drivers/ptp/ptp_ines.c
> > +++ b/drivers/ptp/ptp_ines.c
> > @@ -108,11 +108,6 @@ MODULE_LICENSE("GPL");
> > 
> >  #define MESSAGE_TYPE_P_DELAY_RESP	3
> >  #define MESSAGE_TYPE_DELAY_REQ		4
> > 
> > -#define SYNC				0x0
> > -#define DELAY_REQ			0x1
> > -#define PDELAY_REQ			0x2
> > -#define PDELAY_RESP			0x3
> > -
> > 
> >  static LIST_HEAD(ines_clocks);
> >  static DEFINE_MUTEX(ines_clocks_lock);
> > 
> > @@ -683,9 +678,9 @@ static bool is_sync_pdelay_resp(struct sk_buff *skb,
> > int type)> 
> >  	msgtype = ptp_get_msgtype(hdr, type);
> > 
> > -	switch ((msgtype & 0xf)) {
> > -	case SYNC:
> > -	case PDELAY_RESP:
> > +	switch (msgtype) {
> > +	case PTP_MSGTYPE_SYNC:
> 
> > +	case PTP_MSGTYPE_PDELAY_RESP:
> This has a functional change of no longer discarding the higher bits of
> msgtype. While this may be correct, I think it should at least be called
> out as to why in the commit message.

The "& 0xf" is already done within ptp_get_msgtype(). I will add this to the
commit description for the next series.

regards
Christian