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Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'

From Viresh Kumar <viresh.kumar@linaro.org>
Newsgroups linux.kernel
Subject Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock'
Date 2015-09-25 20:50 +0200
Message-ID <qcGed-1ip-1@gated-at.bofh.it> (permalink)
References <qcEm5-746-7@gated-at.bofh.it> <qcFia-8p1-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 25-09-15, 19:42, Johannes Berg wrote:
> On Fri, 2015-09-25 at 09:41 -0700, Viresh Kumar wrote:
> 
> > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
> > ---
> > V3->V4:
> > - Create a local variable instead of changing type of global_lock
> >   (Rafael)
> 
> Err, surely that wasn't what Rafael meant, since it's clearly
> impossible to use a pointer to the stack, assign to it once, and the
> expect anything to wkr at all ...

Sorry, I am not sure on what wouldn't work with this patch but this is
what Rafael said, and I don't think I wrote it differently :)

Rafael wrote:
> Actually, what about adding a local u32 variable, say val, here and doing
> 
> >  	if (!debugfs_create_x32("gpe", 0444, dev_dir, (u32 *)&first_ec->gpe))
> >  		goto error;
> >  	if (!debugfs_create_bool("use_global_lock", 0444, dev_dir,
> > -				 (u32 *)&first_ec->global_lock))
> > +				 &first_ec->global_lock))
> 
> 	if (!debugfs_create_bool("use_global_lock", 0444, dev_dir, &val))
> 
> >  		goto error;
> 
> 	first_ec->global_lock = val;
> 
> And then you can turn val into bool just fine without changing the structure
> definition.

-- 
viresh
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[PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-25 18:50 +0200
  [PATCH V4 2/2] debugfs: Pass bool pointer to debugfs_create_bool() Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-25 18:50 +0200
  Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' Johannes Berg <johannes@sipsolutions.net> - 2015-09-25 19:50 +0200
    Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-25 20:50 +0200
      Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' Johannes Berg <johannes@sipsolutions.net> - 2015-09-25 20:50 +0200
        Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-25 21:00 +0200
          Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-25 22:00 +0200
            Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-25 22:10 +0200
              Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-25 22:30 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-25 22:40 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-25 23:50 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rafael@kernel.org> - 2015-09-26 00:30 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-26 20:50 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' Arnd Bergmann <arnd@arndb.de> - 2015-09-26 21:40 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-27 15:50 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' Arnd Bergmann <arnd@arndb.de> - 2015-09-28 10:30 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-28 14:40 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' James Bottomley <James.Bottomley@HansenPartnership.com> - 2015-09-26 22:00 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-27 15:50 +0200
                RE: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' David Laight <David.Laight@ACULAB.COM> - 2015-09-28 11:00 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' James Bottomley <James.Bottomley@HansenPartnership.com> - 2015-09-28 16:30 +0200
                RE: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' David Laight <David.Laight@ACULAB.COM> - 2015-09-28 17:00 +0200
                Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' James Bottomley <James.Bottomley@HansenPartnership.com> - 2015-09-28 17:20 +0200
                RE: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of  'global_lock' David Laight <David.Laight@ACULAB.COM> - 2015-09-28 17:40 +0200
  Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-25 22:00 +0200
    Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2015-09-25 22:00 +0200
  Re: [PATCH V4 1/2] ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' Viresh Kumar <viresh.kumar@linaro.org> - 2015-09-27 16:40 +0200

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