linux-kernel - Re: [alsa-devel] [PATCH v2 2/2] ALSA: au88x0: pr_* replaced with dev

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Message-ID: <1413024491.16385.10.camel@joe-AO725>
Date:	Sat, 11 Oct 2014 03:48:11 -0700
From:	Joe Perches <joe@...ches.com>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	Raymond Yau <superquad.vortex2@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [PATCH v2 2/2] ALSA: au88x0: pr_* replaced with
 dev_*

On Sat, 2014-10-11 at 14:39 +0530, Sudip Mukherjee wrote:
> On Sat, Oct 11, 2014 at 03:20:56PM +0800, Raymond Yau wrote:
> > >
> > > pr_* macros replaced with dev_* as they are more preffered over pr_*.
> > > each file which had pr_* was reviewed manually and replaced with dev_*.
> > > here we have actually used the reference of the vortex which was added
> > > to some functions in the previous patch of this series.
> > >
> > > The prefix of the CARD_NAME and prefix of "vortex:" was also
> > > removed as the dev_* will print the device name.
> > >
> > > Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> > > ---
> > >
> > 
> > >  static int vortex_core_init(vortex_t *vortex)
> > >  {
> > >
> > > -       pr_info( "Vortex: init.... ");
> > > +       dev_info(vortex->card->dev, "init.... ");
> > 
> > Is it possible to add linefeed  since "done/n" won't appear in the same
> > line with init nor shutdown?
> > 
> should we add linefeed ?
> as of now it will print init.... then it will print done as the init is complete.
> so dmesg will show us:
> 
> init....done.
> 
> same for shutdown.
> but if we give linefeed , then it will become : 
> 
> init....
> done.
> 
> the meaning will be lost. and many user might just wonder what is done ? 
[]
> > > @@ -2738,7 +2744,7 @@ static int vortex_core_init(vortex_t *vortex)
> > >  static int vortex_core_shutdown(vortex_t * vortex)
> > >  {
> > >
> > > -       pr_info( "Vortex: shutdown...");
> > > +       dev_info(vortex->card->dev, "shutdown...");
> > >  #ifndef CHIP_AU8820
> > >         vortex_eq_free(vortex);
> > >         vortex_Vort3D_disable(vortex);
> > > @@ -2760,7 +2766,7 @@ static int vortex_core_shutdown(vortex_t * vortex)
> > >         msleep(5);
> > >         hwwrite(vortex->mmio, VORTEX_IRQ_SOURCE, 0xffff);
> > >
> > > -       pr_info( "done.\n");
> > > +       dev_info(vortex->card->dev, "done.\n");
> > >         return 0;
> > >  }

It's actually on 2 lines before your patch.

	pr_info("a");
	pr_info("b\n");

already emits 2 separate lines.

	pr_info("a");
	pr_cont("b\n");

emits a single line "ab"
(unless some other thread emits something in-between)

pr_cont or a bare printk can be used after a dev_info
without a newline to avoid unwanted newlines.

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