Fix compiler warning

In file included from ubifs.h:2137:0, from ubifs.c:26: misc.h: In function 'ubifs_idx_key': misc.h:263:26: warning: dereferencing type-punned pointer will break strict-aliasing rules

seen with gcc version 4.5.1 (Sourcery G++ Lite 2010.09-50).

No functional change.

CC: Stefan Roese sr@denx.de Signed-off-by: Dirk Behme dirk.behme@googlemail.com

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This was found building 'omap3_pandora' with the above tool chain.

Note: Compiling the ubifs (make fs/ubifs) in a recent mainline kernel (2.6.37-rc7) with the same tool chain doesn't give this warning. There seems to be no difference in the recent ubifs kernel sources regarding this piece of code (structs ubifs_idx_node, ubifs_branch and the function ubifs_idx_key in misc.h), though. So I'm not sure why this warning is in U-Boot but not in the kernel. Different compiler options?

fs/ubifs/misc.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

Index: u-boot.git/fs/ubifs/misc.h =================================================================== --- u-boot.git.orig/fs/ubifs/misc.h +++ u-boot.git/fs/ubifs/misc.h @@ -260,7 +260,8 @@ struct ubifs_branch *ubifs_idx_branch(co static inline void *ubifs_idx_key(const struct ubifs_info *c, const struct ubifs_idx_node *idx) { - return (void *)((struct ubifs_branch *)idx->branches)->key; + const __u8 *branch = idx->branches; + return (void *)((struct ubifs_branch *)branch)->key; }

/**