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Use sysfs_emit_at() instead of snprintf() + custom logic. Using sysfs_emit_at() is much more simple. Also, sysfs_emit() is already used in this function, so using sysfs_emit_at() is more consistent. Also simplify the logic: - always add a space after an entry - change the last space into a '\n' Finally it is easy to see that, given the size of cabc_modes, PAGE_SIZE can not be reached. So better keep everything simple (and correct). Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Helge Deller <deller@gmx.de>