dmaengine: stm32-dma: use reset controller only at probe time

Remove reset controller reference from device instance since it is
used only at probe time.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Link: https://lore.kernel.org/r/20200129153628.29329-3-amelie.delaunay@st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c
index 136deab..e314147 100644 (file)
--- a/drivers/dma/stm32-dma.c
+++ b/drivers/dma/stm32-dma.c
@@ -207,7 +207,6 @@ struct stm32_dma_device {
        struct dma_device ddev;
        void __iomem *base;
        struct clk *clk;
-       struct reset_control *rst;
        bool mem2mem;
        struct stm32_dma_chan chan[STM32_DMA_MAX_CHANNELS];
 };
@@ -1275,6 +1274,7 @@ static int stm32_dma_probe(struct platform_device *pdev)
        struct dma_device *dd;
        const struct of_device_id *match;
        struct resource *res;
+       struct reset_control *rst;
        int i, ret;
 
        match = of_match_device(stm32_dma_of_match, &pdev->dev);
@@ -1309,11 +1309,11 @@ static int stm32_dma_probe(struct platform_device *pdev)
        dmadev->mem2mem = of_property_read_bool(pdev->dev.of_node,
                                                "st,mem2mem");
 
-       dmadev->rst = devm_reset_control_get(&pdev->dev, NULL);
-       if (!IS_ERR(dmadev->rst)) {
-               reset_control_assert(dmadev->rst);
+       rst = devm_reset_control_get(&pdev->dev, NULL);
+       if (!IS_ERR(rst)) {
+               reset_control_assert(rst);
                udelay(2);
-               reset_control_deassert(dmadev->rst);
+               reset_control_deassert(rst);
        }
 
        dma_cap_set(DMA_SLAVE, dd->cap_mask);