On 19/06/12 21:41, Peter Senna Tschudin wrote:
Full diff:
http://pastebin.com/BJS2EXcH
On Tue, Jun 19, 2012 at 4:39 PM, Peter Senna Tschudin
<peter.senna@xxxxxxxxx> 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?
That looks very promising! I never thought to look for differences in file2alias.c.
I'll try this later this week.
Regards,
Hans
[]'s
Peter
On Tue, Jun 19, 2012 at 11:03 AM, Hans Verkuil<hverkuil@xxxxxxxxx> 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<hverkuil@xxxxxxxxx> 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.senna@xxxxxxxxx
gpg id: 48274C36
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