Full diff:
http://pastebin.com/BJS2EXcH
On Tue, Jun 19, 2012 at 4:39 PM, Peter Senna Tschudin
<peter.se...@gmail.com> wrote:
> Hans,
>
> I've:
> [peter@ace tmp]$ diff linux-2.6.35.13/scripts/mod/file2alias.c
> linux-3.4.3/scripts/mod/file2alias.c
>
> And found:
> 727a840
>> ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
>
> This line only exists on 3.4.3 version of file2alias.c. Isn't this why
> it successfully compile with newer Kernel?
>
> []'s
>
> Peter
>
>
> On Tue, Jun 19, 2012 at 11:03 AM, Hans Verkuil <hverk...@xs4all.nl> wrote:
>> On Tue 19 June 2012 14:50:09 Ezequiel Garcia wrote:
>>> Hi Hans,
>>>
>>> On Tue, Jun 19, 2012 at 3:34 AM, Hans Verkuil <hverk...@xs4all.nl> wrote:
>>> > Hi all,
>>> >
>>> > Yesterday I upgraded the gcc version I use to compile the daily build to
>>> > 4.7.1.
>>> >
>>> > This causes very strange errors when compiling 2.6.39 - 3.3:
>>> >
>>> > FATAL: media_build/v4l/tuner: sizeof(struct i2c_device_id)=32 is not a
>>> > modulo of the size of section __mod_i2c_device_table=18.
>>> > Fix definition of struct i2c_device_id in mod_devicetable.h
>>> >
>>> > This error does not appear when compiling with gcc 4.6.3, and I see
>>> > absolutely nothing
>>> > wrong with mod_devicetable.h.
>>> >
>>> > I tried very hard to figure out what is going on and why older and newer
>>> > kernels
>>> > are not affected, but I still have no idea.
>>> >
>>> > The error itself it reported by scripts/mod/file2alias.c. I can suppress
>>> > that error
>>> > but that will just lead to a modpost crash later in the compile process.
>>> >
>>> > The tuner.o file always causes this. Commenting tuner.o in the Makefile
>>> > will
>>> > cause
>>> > the same problems in other modules (cafe_ccic), but there are also i2c
>>> > modules that
>>> > compile just fine.
>>> >
>>> > Does anyone have an insight into this? Did something magical change in
>>> > kernel 3.4
>>> > that fixed this?
>>> >
>>>
>>> Perhaps this thread could be useful:
>>>
>>> https://lkml.org/lkml/2012/6/15/323
>>
>> Yeah, I read that as well. But there there is a clear change that caused the
>> problem. As far as I can tell include/linux/mod_devicetable.h has identical
>> i2c_device_id structs for linux-3.0/1/2/3/4, yet all compile fine with
>> gcc-4.6.3,
>> but for gcc-4.7.1 only linux-3.4 compiles.
>>
>> I'm stumped.
>>
>> Regards,
>>
>> Hans
>> --
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>
>
>
> --
> Peter Senna Tschudin
> peter.se...@gmail.com
> gpg id: 48274C36
--
Peter Senna Tschudin
peter.se...@gmail.com
gpg id: 48274C36
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