dmaengine: stm32-mdma: Use struct_size() in kzalloc()

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

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20201008141828.GA20325@embeddedor
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 08cfbfab837bb29b697a2eb46ec234e9e6aae811..29e5e30524bb7f933e750bc6e163c833c73427ba 100644 (file)
--- 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;