linux-kernel - [PATCH] crypto: cavium: fix dma_free

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Message-ID: <20251218095647.45214-2-fourier.thomas@gmail.com>
Date: Thu, 18 Dec 2025 10:56:45 +0100
From: Thomas Fourier <fourier.thomas@...il.com>
To: 
Cc: Thomas Fourier <fourier.thomas@...il.com>,
	George Cherian <gcherian@...vell.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	David Daney <david.daney@...ium.com>,
	linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] crypto: cavium: fix dma_free_coherent() size

The size of the buffer in alloc_command_queues() is
curr->size + CPT_NEXT_CHUNK_PTR_SIZE, so used that length for
dma_free_coherent().

Fixes: c694b233295b ("crypto: cavium - Add the Virtual Function driver for CPT")
Signed-off-by: Thomas Fourier <fourier.thomas@...il.com>
---
 drivers/crypto/cavium/cpt/cptvf_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/cavium/cpt/cptvf_main.c b/drivers/crypto/cavium/cpt/cptvf_main.c
index c246920e6f54..bccd680c7f7e 100644
--- a/drivers/crypto/cavium/cpt/cptvf_main.c
+++ b/drivers/crypto/cavium/cpt/cptvf_main.c
@@ -180,7 +180,8 @@ static void free_command_queues(struct cpt_vf *cptvf,
 
 		hlist_for_each_entry_safe(chunk, node, &cqinfo->queue[i].chead,
 					  nextchunk) {
-			dma_free_coherent(&pdev->dev, chunk->size,
+			dma_free_coherent(&pdev->dev,
+					  chunk->size + CPT_NEXT_CHUNK_PTR_SIZE,
 					  chunk->head,
 					  chunk->dma_addr);
 			chunk->head = NULL;
-- 
2.43.0