netdev - [PATCH net] octeontx2-af: Initialize bitmap arrays.

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Date: Tue, 23 Jan 2024 10:42:45 +0530
From: Ratheesh Kannoth <rkannoth@...vell.com>
To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <sgoutham@...vell.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <sbhatta@...vell.com>,
        <gakula@...vell.com>, <hkelam@...vell.com>,
        Ratheesh Kannoth
	<rkannoth@...vell.com>
Subject: [PATCH net] octeontx2-af: Initialize bitmap arrays.

kmalloc_array() does not initializes memory to zero.
This causes issues with bitmap. Use devm_kcalloc()
to fix the issue.

Fixes: dd7842878633 ("octeontx2-af: Add new devlink param to configure maximum usable NIX block LFs")
Signed-off-by: Ratheesh Kannoth <rkannoth@...vell.com>
---
 .../ethernet/marvell/octeontx2/af/rvu_npc.c   | 55 ++++++++++---------
 1 file changed, 28 insertions(+), 27 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index 167145bdcb75..7539e6f0290a 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -1850,13 +1850,13 @@ void npc_mcam_rsrcs_deinit(struct rvu *rvu)
 {
 	struct npc_mcam *mcam = &rvu->hw->mcam;
 
-	kfree(mcam->bmap);
-	kfree(mcam->bmap_reverse);
-	kfree(mcam->entry2pfvf_map);
-	kfree(mcam->cntr2pfvf_map);
-	kfree(mcam->entry2cntr_map);
-	kfree(mcam->cntr_refcnt);
-	kfree(mcam->entry2target_pffunc);
+	devm_kfree(rvu->dev, mcam->bmap);
+	devm_kfree(rvu->dev, mcam->bmap_reverse);
+	devm_kfree(rvu->dev, mcam->entry2pfvf_map);
+	devm_kfree(rvu->dev, mcam->cntr2pfvf_map);
+	devm_kfree(rvu->dev, mcam->entry2cntr_map);
+	devm_kfree(rvu->dev, mcam->cntr_refcnt);
+	devm_kfree(rvu->dev, mcam->entry2target_pffunc);
 	kfree(mcam->counters.bmap);
 }
 
@@ -1904,21 +1904,22 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
 	mcam->pf_offset = mcam->nixlf_offset + nixlf_count;
 
 	/* Allocate bitmaps for managing MCAM entries */
-	mcam->bmap = kmalloc_array(BITS_TO_LONGS(mcam->bmap_entries),
-				   sizeof(long), GFP_KERNEL);
+	mcam->bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(mcam->bmap_entries),
+				  sizeof(long), GFP_KERNEL);
 	if (!mcam->bmap)
 		return -ENOMEM;
 
-	mcam->bmap_reverse = kmalloc_array(BITS_TO_LONGS(mcam->bmap_entries),
-					   sizeof(long), GFP_KERNEL);
+	mcam->bmap_reverse = devm_kcalloc(rvu->dev,
+					  BITS_TO_LONGS(mcam->bmap_entries),
+					  sizeof(long), GFP_KERNEL);
 	if (!mcam->bmap_reverse)
 		goto free_bmap;
 
 	mcam->bmap_fcnt = mcam->bmap_entries;
 
 	/* Alloc memory for saving entry to RVU PFFUNC allocation mapping */
-	mcam->entry2pfvf_map = kmalloc_array(mcam->bmap_entries,
-					     sizeof(u16), GFP_KERNEL);
+	mcam->entry2pfvf_map = devm_kcalloc(rvu->dev, mcam->bmap_entries,
+					    sizeof(u16), GFP_KERNEL);
 	if (!mcam->entry2pfvf_map)
 		goto free_bmap_reverse;
 
@@ -1941,27 +1942,27 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
 	if (err)
 		goto free_entry_map;
 
-	mcam->cntr2pfvf_map = kmalloc_array(mcam->counters.max,
-					    sizeof(u16), GFP_KERNEL);
+	mcam->cntr2pfvf_map = devm_kcalloc(rvu->dev, mcam->counters.max,
+					   sizeof(u16), GFP_KERNEL);
 	if (!mcam->cntr2pfvf_map)
 		goto free_cntr_bmap;
 
 	/* Alloc memory for MCAM entry to counter mapping and for tracking
 	 * counter's reference count.
 	 */
-	mcam->entry2cntr_map = kmalloc_array(mcam->bmap_entries,
-					     sizeof(u16), GFP_KERNEL);
+	mcam->entry2cntr_map = devm_kcalloc(rvu->dev, mcam->bmap_entries,
+					    sizeof(u16), GFP_KERNEL);
 	if (!mcam->entry2cntr_map)
 		goto free_cntr_map;
 
-	mcam->cntr_refcnt = kmalloc_array(mcam->counters.max,
-					  sizeof(u16), GFP_KERNEL);
+	mcam->cntr_refcnt = devm_kcalloc(rvu->dev, mcam->counters.max,
+					 sizeof(u16), GFP_KERNEL);
 	if (!mcam->cntr_refcnt)
 		goto free_entry_cntr_map;
 
 	/* Alloc memory for saving target device of mcam rule */
-	mcam->entry2target_pffunc = kmalloc_array(mcam->total_entries,
-						  sizeof(u16), GFP_KERNEL);
+	mcam->entry2target_pffunc = devm_kcalloc(rvu->dev, mcam->total_entries,
+						 sizeof(u16), GFP_KERNEL);
 	if (!mcam->entry2target_pffunc)
 		goto free_cntr_refcnt;
 
@@ -1978,19 +1979,19 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
 	return 0;
 
 free_cntr_refcnt:
-	kfree(mcam->cntr_refcnt);
+	devm_kfree(rvu->dev, mcam->cntr_refcnt);
 free_entry_cntr_map:
-	kfree(mcam->entry2cntr_map);
+	devm_kfree(rvu->dev, mcam->entry2cntr_map);
 free_cntr_map:
-	kfree(mcam->cntr2pfvf_map);
+	devm_kfree(rvu->dev, mcam->cntr2pfvf_map);
 free_cntr_bmap:
 	kfree(mcam->counters.bmap);
 free_entry_map:
-	kfree(mcam->entry2pfvf_map);
+	devm_kfree(rvu->dev, mcam->entry2pfvf_map);
 free_bmap_reverse:
-	kfree(mcam->bmap_reverse);
+	devm_kfree(rvu->dev, mcam->bmap_reverse);
 free_bmap:
-	kfree(mcam->bmap);
+	devm_kfree(rvu->dev, mcam->bmap);
 
 	return -ENOMEM;
 }
-- 
2.25.1