From: Xiaoliang Pang dawning.pang@gmail.com
[ Upstream commit 228d284aac61283cde508a925d666f854b57af63 ]
In the init loop, if an error occurs in function 'dma_alloc_coherent', then goto the err_cleanup section, after run i--, in the array ring, the struct mtk_ring with index i will not be released, causing memory leaks
Fixes: 785e5c616c849 ("crypto: mediatek - Add crypto driver support for some MediaTek chips") Cc: Ryder Lee ryder.lee@mediatek.com Signed-off-by: Xiaoliang Pang dawning.pang@gmail.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/mediatek/mtk-platform.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/mediatek/mtk-platform.c b/drivers/crypto/mediatek/mtk-platform.c index c58e708d30395..b2b1e90a3079d 100644 --- a/drivers/crypto/mediatek/mtk-platform.c +++ b/drivers/crypto/mediatek/mtk-platform.c @@ -472,13 +472,13 @@ static int mtk_desc_ring_alloc(struct mtk_cryp *cryp) return 0;
err_cleanup: - for (; i--; ) { + do { dma_free_coherent(cryp->dev, MTK_DESC_RING_SZ, ring[i]->res_base, ring[i]->res_dma); dma_free_coherent(cryp->dev, MTK_DESC_RING_SZ, ring[i]->cmd_base, ring[i]->cmd_dma); kfree(ring[i]); - } + } while (i--); return -ENOMEM; }