linux-kernel - [PATCH] ice: Slightly simply ice_find_free_recp_res

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Message-Id: <dc5cd04eed7dd3100f5860acaa995efa40ddecc8.1637183999.git.christophe.jaillet@wanadoo.fr>
Date:   Wed, 17 Nov 2021 22:21:19 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     jesse.brandeburg@...el.com, anthony.l.nguyen@...el.com,
        davem@...emloft.net, kuba@...nel.org
Cc:     intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] ice: Slightly simply ice_find_free_recp_res_idx

The 'possible_idx' bitmap is set just after it is zeroed, so we can save
the first step.

The 'free_idx' bitmap is used only at the end of the function as the
result of a bitmap xor operation. So there is no need to explicitly
zero it before.

So, slightly simply the code and remove 2 useless 'bitmap_zero()' call

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
I don't think it will make any differences in RL. ICE_MAX_FV_WORDS is
just 48 (bits), so 1 or 2 longs
---
 drivers/net/ethernet/intel/ice/ice_switch.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 793f4a9fc2cd..78bfb9fd318d 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -4071,10 +4071,8 @@ ice_find_free_recp_res_idx(struct ice_hw *hw, const unsigned long *profiles,
 	DECLARE_BITMAP(used_idx, ICE_MAX_FV_WORDS);
 	u16 bit;
 
-	bitmap_zero(possible_idx, ICE_MAX_FV_WORDS);
 	bitmap_zero(recipes, ICE_MAX_NUM_RECIPES);
 	bitmap_zero(used_idx, ICE_MAX_FV_WORDS);
-	bitmap_zero(free_idx, ICE_MAX_FV_WORDS);
 
 	bitmap_set(possible_idx, 0, ICE_MAX_FV_WORDS);
 
-- 
2.30.2