LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Stephen Boyd <sboyd@kernel.org>
To: "Ardelean, Alexandru" <alexandru.Ardelean@analog.com>,
	"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "heiko@sntech.de" <heiko@sntech.de>,
	"andriy.shevchenko@linux.intel.com" 
	<andriy.shevchenko@linux.intel.com>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 02/16] treewide: rename match_string() -> __match_string()
Date: Thu, 09 May 2019 10:23:55 -0700	[thread overview]
Message-ID: <155742263550.14659.13420287678025539904@swboyd.mtv.corp.google.com> (raw)
In-Reply-To: <857bce4e87bc473e533c53abc0b612ee918f2474.camel@analog.com>

Quoting Ardelean, Alexandru (2019-05-09 01:52:53)
> On Wed, 2019-05-08 at 10:00 -0700, Stephen Boyd wrote:
> > [External]
> > 
> > 
> > (Trimming the lists but keeping lkml)
> > 
> > Quoting Alexandru Ardelean (2019-05-08 04:28:28)
> > > This change does a rename of match_string() -> __match_string().
> > > 
> > > There are a few parts to the intention here (with this change):
> > > 1. Align with sysfs_match_string()/__sysfs_match_string()
> > > 2. This helps to group users of `match_string()` into simple users:
> > >    a. those that use ARRAY_SIZE(_a) to specify the number of elements
> > >    b. those that use -1 to pass a NULL terminated array of strings
> > >    c. special users, which (after eliminating 1 & 2) are not that many
> > > 3. The final intent is to fix match_string()/__match_string() which is
> > >    slightly broken, in the sense that passing -1 or a positive value
> > > does
> > >    not make any difference: the iteration will stop at the first NULL
> > >    element.
> > > 
> > > Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
> > > ---
> > 
> > [...]
> > > diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> > > index 96053a96fe2f..0b6c3d300411 100644
> > > --- a/drivers/clk/clk.c
> > > +++ b/drivers/clk/clk.c
> > > @@ -2305,8 +2305,8 @@ bool clk_has_parent(struct clk *clk, struct clk
> > > *parent)
> > >         if (core->parent == parent_core)
> > >                 return true;
> > > 
> > > -       return match_string(core->parent_names, core->num_parents,
> > > -                           parent_core->name) >= 0;
> > > +       return __match_string(core->parent_names, core->num_parents,
> > > +                             parent_core->name) >= 0;
> > 
> > This is essentially ARRAY_SIZE(core->parent_names) so it should be fine
> > to put this back to match_string() later in the series.
> 
> I don't think so.
> core->parents & core->parent_names seem to be dynamically allocated array.
> ARRAY_SIZE() is a macro that expands at pre-compile time and evaluates
> correctly at compile time only for static arrays.
> 

Ah ok. The ARRAY_SIZE() is done inside the match_string() function? I
missed that.


  reply	other threads:[~2019-05-09 17:23 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-08 11:28 [PATCH 00/16] treewide: fix match_string() helper when array size Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 01/16] lib: fix match_string() helper on -1 " Alexandru Ardelean
2019-05-08 11:31   ` Ardelean, Alexandru
2019-05-08 11:28 ` [PATCH 01/16] lib: fix match_string() helper when array size is positive Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 02/16] treewide: rename match_string() -> __match_string() Alexandru Ardelean
2019-05-08 17:00   ` Stephen Boyd
2019-05-09  8:52     ` Ardelean, Alexandru
2019-05-09 17:23       ` Stephen Boyd [this message]
2019-05-09  9:02     ` Heiko Stuebner
2019-05-08 11:28 ` [PATCH 03/16] lib,treewide: add new match_string() helper/macro Alexandru Ardelean
2019-05-08 13:11   ` Andy Shevchenko
2019-05-08 13:18     ` Greg KH
2019-05-08 13:22       ` Ardelean, Alexandru
2019-05-10  9:15         ` Ardelean, Alexandru
2019-05-10 14:34           ` andriy.shevchenko
2019-05-13  7:00             ` Ardelean, Alexandru
2019-05-08 11:28 ` [PATCH 04/16] powerpc/xmon: use " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 05/16] ALSA: oxygen: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 06/16] x86/mtrr: use new match_string() helper + add gaps == minor fix Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 07/16] device connection: use new match_string() helper/macro Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 08/16] cpufreq/intel_pstate: remove NULL entry + use match_string() Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 09/16] mmc: sdhci-xenon: use new match_string() helper/macro Alexandru Ardelean
2019-05-08 12:20   ` Dan Carpenter
2019-05-08 11:28 ` [PATCH 10/16] pinctrl: armada-37xx: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 11/16] mm/vmpressure.c: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 12/16] rdmacg: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 13/16] drm/edid: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 14/16] staging: gdm724x: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 15/16] video: fbdev: pxafb: " Alexandru Ardelean
2019-05-08 11:28 ` [PATCH 16/16] sched: debug: " Alexandru Ardelean
2019-05-28  7:39 ` [PATCH 1/3][V2] lib: fix match_string() helper on -1 array size Alexandru Ardelean
2019-05-28  7:39   ` [PATCH 2/3][V2] treewide: rename match_string() -> __match_string() Alexandru Ardelean
2019-05-28  7:39   ` [PATCH 3/3][V2] lib: re-introduce new match_string() helper/macro Alexandru Ardelean

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=155742263550.14659.13420287678025539904@swboyd.mtv.corp.google.com \
    --to=sboyd@kernel.org \
    --cc=alexandru.Ardelean@analog.com \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=heiko@sntech.de \
    --cc=linux-clk@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: [PATCH 02/16] treewide: rename match_string() -> __match_string()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).