From 775115c06091fcfa1189a50aca488fa596839617 Mon Sep 17 00:00:00 2001 From: "Vyacheslav V. Yurkov" Date: Tue, 14 Jun 2016 09:58:37 +0200 Subject: [PATCH] drivers/base dmam_declare_coherent_memory leaks dmam_declare_coherent_memory doesn't take into account the return value of dma_declare_coherent_memory, which leads to incorrect resource handling Signed-off-by: Vyacheslav V. Yurkov Signed-off-by: Greg Kroah-Hartman --- drivers/base/dma-mapping.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 2e318ff..8f8b68c 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -198,10 +198,13 @@ int dmam_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, rc = dma_declare_coherent_memory(dev, phys_addr, device_addr, size, flags); - if (rc == 0) + if (rc) { devres_add(dev, res); - else + rc = 0; + } else { devres_free(res); + rc = -ENOMEM; + } return rc; } -- 2.7.4