Re: [PATCH v2 1/8] lib/find_bit.c: Add find_last_zero_bit

Inspired find_next_*_bit and find_last_bit, add find_last_zero_bit
And add le support about find_last_bit and find_last_zero_bit.

Signed-off-by: Levi Yun <redacted>
---
 lib/find_bit.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 62 insertions(+), 2 deletions(-)

diff --git a/lib/find_bit.c b/lib/find_bit.c
index 4a8751010d59..f9dda2bf7fa9 100644
--- a/lib/find_bit.c
+++ b/lib/find_bit.c

@@ -90,7 +90,7 @@ unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
 EXPORT_SYMBOL(find_next_zero_bit);
 #endif
 
-#if !defined(find_next_and_bit)
+#ifndef find_next_and_bit
 unsigned long find_next_and_bit(const unsigned long *addr1,
 		const unsigned long *addr2, unsigned long size,
 		unsigned long offset)

@@ -141,7 +141,7 @@ unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
 {
 	if (size) {
 		unsigned long val = BITMAP_LAST_WORD_MASK(size);
-		unsigned long idx = (size-1) / BITS_PER_LONG;
+		unsigned long idx = (size - 1) / BITS_PER_LONG;
 
 		do {
 			val &= addr[idx];