linux-kernel - Re: [PATCH v3] checkpatch: add support to check 'Fixes:' tag format

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Message-ID: <20200501163440.GA19874@udknight>
Date:   Sat, 2 May 2020 00:34:40 +0800
From:   Wang YanQing <udknight@...il.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Andy Whitcroft <apw@...onical.com>, linux-kernel@...r.kernel.org,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Matteo Croce <mcroce@...hat.com>, Markus.Elfring@....de,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v3] checkpatch: add support to check 'Fixes:' tag format

On Fri, May 01, 2020 at 08:57:42AM -0700, Joe Perches wrote:
> On Fri, 2020-05-01 at 23:40 +0800, Wang YanQing wrote:
> > According to submitting-patches.rst, 'Fixes:' tag has a little
> > stricter condition about the one line summary than normal git
> > commit description:
> > “...
> > Do not split the tag across multiple lines, tags are exempt from
> > the "wrap at 75 columns" rule in order to simplify parsing scripts
> > ...”
> > 
> > And there is no sanity check for 'Fixes:' tag format in checkpatch
> > the same as GIT_COMMIT_ID for git commit description, so let's expand
> > the GIT_COMMIT_ID to add 'Fixes:' tag format check support.
> > 
> > The check supports below formats:
> > Fixes: 54a4f0239f2e ("KVM: MMU: make kvm_mmu_zap_page() return the number of pages it actually freed")
> > Fixes: 85f7cd3a2aad ("Revert "media: Kconfig: better support hybrid TV devices"")
> > Fixes: 878520ac45f9 ("ext4: save the error code which triggered...")
> > Fixes: 878520ac45f9 ("ext4: save the error code which triggered")
> > Fixes: 277f27e2f277 ("SUNRPC/cache: Allow garbage collection ... ")
> 
> Hi again YanQing.
> 
> I think all the non-standard and incomplete forms
> should have a warning emitted.

Hi Joe Perches
I am not sure whether I get your words, you mean we need to emit warning
for incomplete title line format? For example:
Fixes: 277f27e2f277 ("SUNRPC/cache: Allow garbage collection ... ")


Thanks.
> 
> > The check doesn't support below formats:
> > Fixes: f2c2e717642c ("usb: gadget: add raw-gadget interface"
> > Fixes: 6c73698904aa pinctrl: qcom: Introduce readl/writel accessors
> > Fixes: 3fd6e7d9a146 (ASoC: tas571x: New driver for TI TAS571x power amplifiers)
> > Fixes: 55697cbb44e4 ("arm64: dts: renesas: r8a779{65,80,90}: Add IPMMU devices nodes)
> > Fixes: ba35f8588f47 (“ipvlan: Defer multicast / broadcast processing to a work-queue”)
> > Fixes: cd758a9b57ee "KVM: PPC: Book3S HV: Use __gfn_to_pfn_memslot in HPT page fault handler"
> > Fixes:      9b1640686470 ("scsi: lpfc: Fix use-after-free mailbox cmd completion")
> > Fixes: 03f6fc6de919 ('ASoC: rt5682: Add the soundwire support')
> 
> 
> > Note: this patch also fixes double quotation mark issue for normal git
> >       commit description, and now it supports double quotation mark in
> >       title line, for example:
> >       Commit e33e2241e272 ("Revert "cfg80211: Use 5MHz bandwidth by default
> >       when checking usable channels"")
> 
> Nice.
>