netdev - [net-next v2 13/14] ice: Change type for queue counts

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Date:   Mon, 19 Aug 2019 09:17:07 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Pawel Kaminski <pawel.kaminski@...el.com>, netdev@...r.kernel.org,
        nhorman@...hat.com, sassmann@...hat.com,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next v2 13/14] ice: Change type for queue counts

From: Pawel Kaminski <pawel.kaminski@...el.com>

These queue variables are being assigned values that are type u16.
Change the local variables to match these types. Since these
represent queue counts, they should never be negative.

Signed-off-by: Pawel Kaminski <pawel.kaminski@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 .../net/ethernet/intel/ice/ice_virtchnl_pf.c  | 25 ++++++++++---------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 8a5bf9730fdf..61cf1c5af928 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -2337,11 +2337,11 @@ static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
 	enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS;
 	struct virtchnl_vf_res_request *vfres =
 		(struct virtchnl_vf_res_request *)msg;
-	int req_queues = vfres->num_queue_pairs;
+	u16 req_queues = vfres->num_queue_pairs;
 	struct ice_pf *pf = vf->pf;
-	int max_allowed_vf_queues;
-	int tx_rx_queue_left;
-	int cur_queues;
+	u16 max_allowed_vf_queues;
+	u16 tx_rx_queue_left;
+	u16 cur_queues;
 
 	if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) {
 		v_ret = VIRTCHNL_STATUS_ERR_PARAM;
@@ -2349,29 +2349,30 @@ static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg)
 	}
 
 	cur_queues = vf->num_vf_qs;
-	tx_rx_queue_left = min_t(int, pf->q_left_tx, pf->q_left_rx);
+	tx_rx_queue_left = min_t(u16, pf->q_left_tx, pf->q_left_rx);
 	max_allowed_vf_queues = tx_rx_queue_left + cur_queues;
-	if (req_queues <= 0) {
+	if (!req_queues) {
 		dev_err(&pf->pdev->dev,
-			"VF %d tried to request %d queues. Ignoring.\n",
-			vf->vf_id, req_queues);
+			"VF %d tried to request 0 queues. Ignoring.\n",
+			vf->vf_id);
 	} else if (req_queues > ICE_MAX_BASE_QS_PER_VF) {
 		dev_err(&pf->pdev->dev,
 			"VF %d tried to request more than %d queues.\n",
 			vf->vf_id, ICE_MAX_BASE_QS_PER_VF);
 		vfres->num_queue_pairs = ICE_MAX_BASE_QS_PER_VF;
-	} else if (req_queues - cur_queues > tx_rx_queue_left) {
+	} else if (req_queues > cur_queues &&
+		   req_queues - cur_queues > tx_rx_queue_left) {
 		dev_warn(&pf->pdev->dev,
-			 "VF %d requested %d more queues, but only %d left.\n",
+			 "VF %d requested %u more queues, but only %u left.\n",
 			 vf->vf_id, req_queues - cur_queues, tx_rx_queue_left);
-		vfres->num_queue_pairs = min_t(int, max_allowed_vf_queues,
+		vfres->num_queue_pairs = min_t(u16, max_allowed_vf_queues,
 					       ICE_MAX_BASE_QS_PER_VF);
 	} else {
 		/* request is successful, then reset VF */
 		vf->num_req_qs = req_queues;
 		ice_vc_dis_vf(vf);
 		dev_info(&pf->pdev->dev,
-			 "VF %d granted request of %d queues.\n",
+			 "VF %d granted request of %u queues.\n",
 			 vf->vf_id, req_queues);
 		return 0;
 	}
-- 
2.21.0