can't compile 2.6.11-rc2 on sparc64

[Grzegorz Piotr Jaskiewicz]

I get this error :
 
 CC      arch/sparc64/kernel/ioctl32.o
include/asm/uaccess.h: In function `siocdevprivate_ioctl':
fs/compat_ioctl.c:648: warning: ignoring return value of `copy_to_user', 
declared with attribute warn_unused_result
fs/compat_ioctl.c: In function `put_dirent32':
fs/compat_ioctl.c:2346: warning: ignoring return value of `copy_to_user', 
declared with attribute warn_unused_result
fs/compat_ioctl.c: In function `serial_struct_ioctl':
fs/compat_ioctl.c:2489: warning: ignoring return value of `copy_from_user', 
declared with attribute warn_unused_result
fs/compat_ioctl.c:2502: warning: ignoring return value of `copy_to_user', 
declared with attribute warn_unused_result
make[1]: *** [arch/sparc64/kernel/ioctl32.o] Error 1


gcc is 3.4, 64bit. That's ultra5.

-- 
GJ
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