[PATCH 4.4 20/46] log2: make order_base_2() behave correctly on const input value zero

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Ard Biesheuvel commit 29905b52fad0854351f57bab867647e4982285bf upstream. The function order_base_2() is defined (according to the comment block) as returning zero on

[PATCH 4.4 20/46] log2: make order_base_2() behave correctly on const input value zero

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Ard Biesheuvel commit 29905b52fad0854351f57bab867647e4982285bf upstream. The function order_base_2() is defined (according to the comment block) as returning zero on input zero, but