netdev - [net-next 04/11] ice: remove redundant variable and if condition

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Date:   Tue, 19 Mar 2019 17:52:20 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Brett Creeley <brett.creeley@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 04/11] ice: remove redundant variable and if condition

From: Brett Creeley <brett.creeley@...el.com>

In ice_pf_rxq_wait we are using an unnecessary local variable and also
we are checking if the timeout time was reached after the loop. Get rid
of the local variable and return 0 right when we get a successful
result. This makes it so we can return -ETIMEDOUT if we ever exit the
loop because we know the timeout time has been hit.

Signed-off-by: Brett Creeley <brett.creeley@...el.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_lib.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index fa61203bee26..5215180d08a3 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -175,17 +175,14 @@ static int ice_pf_rxq_wait(struct ice_pf *pf, int pf_q, bool ena)
 	int i;
 
 	for (i = 0; i < ICE_Q_WAIT_MAX_RETRY; i++) {
-		u32 rx_reg = rd32(&pf->hw, QRX_CTRL(pf_q));
-
-		if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))
-			break;
+		if (ena == !!(rd32(&pf->hw, QRX_CTRL(pf_q)) &
+			      QRX_CTRL_QENA_STAT_M))
+			return 0;
 
 		usleep_range(20, 40);
 	}
-	if (i >= ICE_Q_WAIT_MAX_RETRY)
-		return -ETIMEDOUT;
 
-	return 0;
+	return -ETIMEDOUT;
 }
 
 /**
-- 
2.20.1