netdev - Re: [PATCH 0/25] Replace DEFINE_PCI_DEVICE

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Date:	Fri, 18 Jul 2014 11:05:39 -0700
From:	Joe Perches <joe@...ches.com>
To:	Greg KH <greg@...ah.com>
Cc:	"John W. Linville" <linville@...driver.com>,
	Benoit Taine <benoit.taine@...6.fr>, linux-mips@...ux-mips.org,
	linux-fbdev@...r.kernel.org, linux-pci@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	ath5k-devel@...ema.h4ckr.net, linux-acenic@...site.dk,
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	ath10k@...ts.infradead.org, linux-hippi@...site.dk,
	industrypack-devel@...ts.sourceforge.net,
	linux-mmc@...r.kernel.org, MPT-FusionLinux.pdl@...gotech.com,
	virtualization@...ts.linux-foundation.org,
	ath9k-devel@...ema.h4ckr.net, wil6210@....qualcomm.com,
	linux-pcmcia@...ts.infradead.org, linux-can@...r.kernel.org,
	xen-devel@...ts.xenproject.org,
	platform-driver-x86@...r.kernel.org, netdev@...r.kernel.org,
	linux-wireless@...r.kernel.org, users@...x00.serialmonkey.com,
	e1000-devel@...ts.sourceforge.net, linux-crypto@...r.kernel.org,
	devel@...uxdriverproject.org
Subject: Re: [PATCH 0/25] Replace DEFINE_PCI_DEVICE_TABLE macro use

On Fri, 2014-07-18 at 09:43 -0700, Greg KH wrote:
> On Fri, Jul 18, 2014 at 12:22:13PM -0400, John W. Linville wrote:
> > On Fri, Jul 18, 2014 at 05:26:47PM +0200, Benoit Taine wrote:
> > > We should prefer `const struct pci_device_id` over
> > > `DEFINE_PCI_DEVICE_TABLE` to meet kernel coding style guidelines.
> > > This issue was reported by checkpatch.
> >  scripts/checkpatch.pl | 4 ++--
> > Honestly, I prefer the macro -- it stands-out more.  Maybe the style
> > guidelines and/or checkpatch should change instead?
> 
> The macro is horrid, no other bus has this type of thing just to save a
> few characters in typing, so why should PCI be "special" in this regard
> anymore?

I think it doesn't matter much.

The PCI_DEVICE and PCI_VDEVICE macro uses are somewhat similar
and are frequently used with PCI_DEVICE_TABLE, so there's some
commonality there.

The checkpatch message could be made --strict/CHK instead of
WARN so most people would never see it.

Of course it could be removed altogether too.  I don't care.
---
(suggested patch is for -next)

 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index dc72a9b..754fbf2 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3018,8 +3018,8 @@ sub process {
 
 # check for uses of DEFINE_PCI_DEVICE_TABLE
 		if ($line =~ /\bDEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=/) {
-			if (WARN("DEFINE_PCI_DEVICE_TABLE",
-				 "Prefer struct pci_device_id over deprecated DEFINE_PCI_DEVICE_TABLE\n" . $herecurr) &&
+			if (CHK("DEFINE_PCI_DEVICE_TABLE",
+				"Prefer struct pci_device_id over deprecated DEFINE_PCI_DEVICE_TABLE\n" . $herecurr) &&
 			    $fix) {
 				$fixed[$fixlinenr] =~ s/\b(?:static\s+|)DEFINE_PCI_DEVICE_TABLE\s*\(\s*(\w+)\s*\)\s*=\s*/static const struct pci_device_id $1\[\] = /;
 			}


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