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From:   Gregory CLEMENT <gregory.clement@bootlin.com>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Jiri Slaby <jslaby@suse.com>, linux-kernel@vger.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH v2 1/3] tty: n_gsm: Improve debug output
In-Reply-To: <20200518073829.GA3055513@kroah.com>
References: <20200512115323.1447922-1-gregory.clement@bootlin.com> <20200512115323.1447922-2-gregory.clement@bootlin.com> <f957eb74-cdbe-848f-b345-7c9fb3d7b1e6@suse.com> <87tv0dg0ii.fsf@FE-laptop> <20200518073829.GA3055513@kroah.com>
Date:   Mon, 18 May 2020 09:44:52 +0200
Message-ID: <87o8qlg00b.fsf@FE-laptop>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hello Greg,

> On Mon, May 18, 2020 at 09:33:57AM +0200, Gregory CLEMENT wrote:
>> Hello Jiri,
>> 
>> > On 12. 05. 20, 13:53, Gregory CLEMENT wrote:
>> >> Use appropriate print helpers for debug messages.
>> >> 
>> >> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
>> >> ---
>> >>  drivers/tty/n_gsm.c | 14 ++------------
>> >>  1 file changed, 2 insertions(+), 12 deletions(-)
>> >> 
>> >> diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
>> >> index d77ed82a4840..67c8f8173023 100644
>> >> --- a/drivers/tty/n_gsm.c
>> >> +++ b/drivers/tty/n_gsm.c
>> >> @@ -504,18 +504,8 @@ static void gsm_print_packet(const char *hdr, int addr, int cr,
>> >>  	else
>> >>  		pr_cont("(F)");
>> >>  
>> >> -	if (dlen) {
>> >> -		int ct = 0;
>> >> -		while (dlen--) {
>> >> -			if (ct % 8 == 0) {
>> >> -				pr_cont("\n");
>> >> -				pr_debug("    ");
>> >> -			}
>> >> -			pr_cont("%02X ", *data++);
>> >> -			ct++;
>> >> -		}
>> >> -	}
>> >> -	pr_cont("\n");
>> >> +	if (dlen)
>> >
>> > This test is superfluous. print_hex_dump_* won't write anything when
>> > zero length is passed to it.
>> 
>> As I will send a v3 due to the issue found on the last patch, I am also
>> going to fix this.
>
> Ugh, as I already applied this series, should I just revert them all, or
> are you going to send fix-ups on top of what I have applied instead?

I was about to send a new series, but I can just send fix-ups. It's up
to you.

Gregory

>
> thanks,
>
> greg k-h

-- 
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com