hwrng: rockchip - rst is used only during probe

The driver uses the rst variable only for an initial reset when the chip
is probed. There's no need to store rst in the driver's private data, we
can make it a local variable in the probe function.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/rockchip-rng.c b/drivers/char/hw_random/rockchip-rng.c
index 548e2f4d14905f16574ddd6030e9d5eba8c6f571..0dff9de64bc5de16e10201197248b32860ab2a1b 100644 (file)
--- a/drivers/char/hw_random/rockchip-rng.c
+++ b/drivers/char/hw_random/rockchip-rng.c
@@ -52,7 +52,6 @@
 struct rk_rng {
        struct hwrng rng;
        void __iomem *base;
-       struct reset_control *rst;
        int clk_num;
        struct clk_bulk_data *clk_bulks;
 };
@@ -132,6 +131,7 @@ out:
 static int rk_rng_probe(struct platform_device *pdev)
 {
        struct device *dev = &pdev->dev;
+       struct reset_control *rst;
        struct rk_rng *rk_rng;
        int ret;
 
@@ -148,14 +148,13 @@ static int rk_rng_probe(struct platform_device *pdev)
                return dev_err_probe(dev, rk_rng->clk_num,
                                     "Failed to get clks property\n");
 
-       rk_rng->rst = devm_reset_control_array_get_exclusive(&pdev->dev);
-       if (IS_ERR(rk_rng->rst))
-               return dev_err_probe(dev, PTR_ERR(rk_rng->rst),
-                                    "Failed to get reset property\n");
+       rst = devm_reset_control_array_get_exclusive(&pdev->dev);
+       if (IS_ERR(rst))
+               return dev_err_probe(dev, PTR_ERR(rst), "Failed to get reset property\n");
 
-       reset_control_assert(rk_rng->rst);
+       reset_control_assert(rst);
        udelay(2);
-       reset_control_deassert(rk_rng->rst);
+       reset_control_deassert(rst);
 
        platform_set_drvdata(pdev, rk_rng);