Thread (2 messages) 2 messages, 2 authors, 2020-10-29
STALE2069d LANDED

[PATCH][next] dmaengine: stm32-mdma: Use struct_size() in kzalloc()

From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Date: 2020-10-08 14:13:08
Also in: dmaengine, linux-hardening, lkml
Subsystem: dma generic offload engine subsystem, the rest · Maintainers: Vinod Koul, Linus Torvalds

Make use of the new struct_size() helper instead of the offsetof() idiom.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/dma/stm32-mdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 08cfbfab837b..29e5e30524bb 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -339,7 +339,7 @@ static struct stm32_mdma_desc *stm32_mdma_alloc_desc(
 	struct stm32_mdma_desc *desc;
 	int i;
 
-	desc = kzalloc(offsetof(typeof(*desc), node[count]), GFP_NOWAIT);
+	desc = kzalloc(struct_size(desc, node, count), GFP_NOWAIT);
 	if (!desc)
 		return NULL;
 
-- 
2.27.0


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