linux-kernel - [PATCH] crypto: octeontx2 - add missing check for dma_map

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Message-Id: <20240408015914.101442-1-nichen@iscas.ac.cn>
Date: Mon,  8 Apr 2024 01:59:14 +0000
From: Chen Ni <nichen@...as.ac.cn>
To: bbrezillon@...nel.org,
	arno@...isbad.org,
	schalla@...vell.com,
	herbert@...dor.apana.org.au,
	davem@...emloft.net
Cc: linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] crypto: octeontx2 - add missing check for dma_map_single

Add check for dma_map_single() and return error if it fails in order
to avoid invalid dma address.

Fixes: e92971117c2c ("crypto: octeontx2 - add ctx_val workaround")
Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 drivers/crypto/marvell/octeontx2/cn10k_cpt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/marvell/octeontx2/cn10k_cpt.c b/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
index 79b4e74804f6..6bfc59e67747 100644
--- a/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
+++ b/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
@@ -138,6 +138,10 @@ int cn10k_cpt_hw_ctx_init(struct pci_dev *pdev,
 		return -ENOMEM;
 	cptr_dma = dma_map_single(&pdev->dev, hctx, CN10K_CPT_HW_CTX_SIZE,
 				  DMA_BIDIRECTIONAL);
+	if (dma_mapping_error(&pdev->dev, cptr_dma)) {
+		kfree(hctx);
+		return -ENOMEM;
+	}
 
 	cn10k_cpt_hw_ctx_set(hctx, 1);
 	er_ctx->hw_ctx = hctx;
-- 
2.25.1