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Message-ID: <20220801215623.GA676484@bhelgaas>
Date:   Mon, 1 Aug 2022 16:56:23 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Liu Song <liusong@...ux.alibaba.com>
Cc:     bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andy Whitcroft <apw@...onical.com>,
        Joe Perches <joe@...ches.com>
Subject: Re: [PATCH] PCI: eliminate abnormal characters when reads help
 information of "PCI_P2PDMA" under menuconfig

On Wed, Jul 20, 2022 at 12:23:29PM -0500, Bjorn Helgaas wrote:
> [+cc Andy, Joe, possible checkpatch question]
> 
> On Wed, Jul 20, 2022 at 03:22:03PM +0800, Liu Song wrote:
> > From: Liu Song <liusong@...ux.alibaba.com>
> > 
> > Read the help information of PCI_P2PDMA through make menuconfig,
> > "Enables" is partially displayed as garbled characters, so fix it.
> > 
> > Signed-off-by: Liu Song <liusong@...ux.alibaba.com>
> > ---
> >  drivers/pci/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> > index 133c732..8102b78 100644
> > --- a/drivers/pci/Kconfig
> > +++ b/drivers/pci/Kconfig
> > @@ -166,7 +166,7 @@ config PCI_P2PDMA
> >  	depends on ZONE_DEVICE
> >  	select GENERIC_ALLOCATOR
> >  	help
> > -	  Enableѕ drivers to do PCI peer-to-peer transactions to and from
> > +	  Enables drivers to do PCI peer-to-peer transactions to and from
> 
> I see this problem ("Enables" renders as "Enable ~U" because the "s"
> is actually UTF-8 D195, CYRILLIC SMALL LETTER DZE).
> 
> "file" found the following other Kconfig files that also contain
> UTF-8:
> 
>   drivers/pci/Kconfig
>     D195 CYRILLIC SMALL LETTER DZE, which looks like "s"
>     "Enables" renders as "Enable ~U"
>   net/netfilter/ipvs/Kconfig
>     C2A0 NO-BREAK SPACE
>     renders fine
>   drivers/mtd/nand/raw/Kconfig
>     MTD_NAND_CAFE  C389 LATIN CAPITAL LETTER E WITH ACUTE
>     "CAFÉ" renders as "CAF ~I"
>   drivers/mtd/spi-nor/Kconfig
>     MTD_SPI_NOR_USE_4K_SECTORS
>     "16 × 4 KiB" renders as "16  ~W 4 KiB"
>   drivers/net/can/usb/Kconfig
>   drivers/net/can/peak_canfd/Kconfig
>   drivers/gpu/drm/panel/Kconfig
>   drivers/platform/mellanox/Kconfig
>   kernel/time/Kconfig
>   crypto/Kconfig
>   arch/Kconfig
> 
> Some of these are clearly wrong (Cyrillic letter), some are
> unnecessary (non-breakable space), some are arguable ("CAFÉ" and "16 ×
> 4 KiB" -- these take advantage of UTF-8 in useful ways).
> 
> Not being a charset guru, I dunno if the rendering problem means
> my terminal is set incorrectly or if they all need to be changed.
> 
> But I think we should address all of them at the same time.  If we do
> need to avoid UTF-8 in Kconfig help, maybe checkpatch should look for
> it.

Any progress on this problem?  I certainly agree that it should be
fixed; I would just like to fix all the problems, not just the PCI
one.

Bjorn

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