linux-kernel - Re: [PATCH] media: atomisp: ov2722: replace hardcoded function name

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Message-ID: <20210106193633.GK2809@kadam>
Date:   Wed, 6 Jan 2021 22:36:33 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Filip Kolev <fil.kolev@...il.com>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Subject: Re: [PATCH] media: atomisp: ov2722: replace hardcoded function name

On Wed, Jan 06, 2021 at 10:25:26AM -0800, Joe Perches wrote:
> On Wed, 2021-01-06 at 18:52 +0100, Greg Kroah-Hartman wrote:
> > On Wed, Jan 06, 2021 at 07:43:42PM +0200, Filip Kolev wrote: 
> > > On 06-Jan-21 09:51, Greg Kroah-Hartman wrote:
> > > > On Tue, Jan 05, 2021 at 10:29:18PM +0200, Filip Kolev wrote:
> > > > > There is a debug message using hardcoded function name instead of the
> > > > > __func__ macro. Replace it.
> > > > > 
> > > > > Report from checkpatch.pl on the file:
> > > > > 
> > > > > WARNING: Prefer using '"%s...", __func__' to using 'ov2722_remove', this function's name, in a string
> > > > > +	dev_dbg(&client->dev, "ov2722_remove...\n");
> []
> > > > > diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
> []
> > > > > @@ -1175,7 +1175,7 @@ static int ov2722_remove(struct i2c_client *client)
> > > > >   	struct v4l2_subdev *sd = i2c_get_clientdata(client);
> > > > >   	struct ov2722_device *dev = to_ov2722_sensor(sd);
> > > > > -	dev_dbg(&client->dev, "ov2722_remove...\n");
> > > > > +	dev_dbg(&client->dev, "%s...\n", __func__);
> > > > 
> > > > dev_dbg() provides the function name already, and this is just a "trace"
> > > > call, and ftrace should be used instead, so the whole line should be
> > > > removed entirely.
> > > 
> > > Thank you for the review!
> > > 
> > > How do I go about this? Do I amend the patch and re-send as v2 or create a
> > > new patch entirely?
> > 
> > New patch entirely please.
> 
> There are quite a lot of these relatively useless function tracing like
> uses in the kernel:
> 
> $ git grep -P '"%s[\.\!]*\\n"\s*,\s*__func__\s*\)' | wc -l
> 1065

These are printing other stuff besides just the function name.  Maybe
grep for '", __func__\)'?

regards,
dan carpenter