| Message ID | 20250326155200.39895-1-yury.norov@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: carl9170: micro-optimize carl9170_tx_shift_bm() | expand |
diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c index 0226c31a6cae..b7717f9e1e9b 100644 --- a/drivers/net/wireless/ath/carl9170/tx.c +++ b/drivers/net/wireless/ath/carl9170/tx.c @@ -366,8 +366,7 @@ static void carl9170_tx_shift_bm(struct ar9170 *ar, if (WARN_ON_ONCE(off >= CARL9170_BAW_BITS)) return; - if (!bitmap_empty(tid_info->bitmap, off)) - off = find_first_bit(tid_info->bitmap, off); + off = min(off, find_first_bit(tid_info->bitmap, off)); tid_info->bsn += off; tid_info->bsn &= 0x0fff;
The function calls bitmap_empty() just before find_first_bit(). Both functions are O(N). Because find_first_bit() returns >= nbits in case of empty bitmap, the bitmap_empty() test may be avoided. Signed-off-by: Yury Norov <yury.norov@gmail.com> --- drivers/net/wireless/ath/carl9170/tx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)