linux-kernel - Re: [PATCH] thinkpad-acpi: fix module autoloading for older models

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Message-ID: <20090314175538.GA27278@khazad-dum.debian.net>
Date:	Sat, 14 Mar 2009 14:55:38 -0300
From:	Henrique de Moraes Holschuh <hmh@....eng.br>
To:	Mathieu Chouquet-Stringer <mchouque@...e.fr>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	Len Brown <lenb@...nel.org>,
	ibm-acpi-devel@...ts.sourceforge.net, linux-acpi@...r.kernel.org,
	stable@...nel.org
Subject: Re: [PATCH] thinkpad-acpi: fix module autoloading for older models

On Sat, 14 Mar 2009, Mathieu Chouquet-Stringer wrote:
> On Sat, Mar 14, 2009 at 04:14:19PM +0100, Kay Sievers wrote:
> > On Sat, Mar 14, 2009 at 11:42, Mathieu Chouquet-Stringer
> > <mchouque@...e.fr> wrote:
> > 
> > > While for older Thinkpads, you do this (for instance):
> > > IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
> > 
> > Aliases are shell-style globs. Any idea what the ',' are doing in a
> > character class? Confused ...
> 
> Good point...  I guess it's a typo: perhaps the original authors thought
> of it as a brace expansion?  Something like 1{0,3,6,...}?

I bet that's exactly what happened...  it was a long time ago, so I don't
recall exactly what I was (not) thinking about when I did it.

Thanks for noticing this, and the revised patch looks good.

> A proper patch would then be:
> 
> Signed-off-by: Mathieu Chouquet-Stringer <mchouque@...e.fr>
>  drivers/platform/x86/thinkpad_acpi.c |    8 ++++----
>  1 files changed, 4 insertions(+), 4 deletions(-)
> 
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index bcbc051..d243320 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -7532,7 +7532,7 @@ MODULE_ALIAS(TPACPI_DRVR_SHORTNAME);
>   * if it is not there yet.
>   */
>  #define IBM_BIOS_MODULE_ALIAS(__type) \
> -	MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
> +	MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*")
>  
>  /* Non-ancient thinkpads */
>  MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
> @@ -7541,9 +7541,9 @@ MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
>  /* Ancient thinkpad BIOSes have to be identified by
>   * BIOS type or model number, and there are far less
>   * BIOS types than model numbers... */
> -IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
> -IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
> -IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
> +IBM_BIOS_MODULE_ALIAS("I[BDHIMNOTWVYZ]");
> +IBM_BIOS_MODULE_ALIAS("1[0368A-GIKM-PST]");
> +IBM_BIOS_MODULE_ALIAS("K[UX-Z]");
>  
>  MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh");
>  MODULE_DESCRIPTION(TPACPI_DESC);

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh
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