hwrng: cctrng - use devm_platform_ioremap_resource() to simplify

Use devm_platform_ioremap_resource() to simplify the code.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/cctrng.c b/drivers/char/hw_random/cctrng.c
index 0efb37adbfa349c8f2672b9b3df916fb31b40839..102195ef376d2420e96090734eb0f0b2e4f1b600 100644 (file)
--- a/drivers/char/hw_random/cctrng.c
+++ b/drivers/char/hw_random/cctrng.c
@@ -486,7 +486,6 @@ static void cc_trng_clk_fini(struct cctrng_drvdata *drvdata)
 
 static int cctrng_probe(struct platform_device *pdev)
 {
-       struct resource *req_mem_cc_regs = NULL;
        struct cctrng_drvdata *drvdata;
        struct device *dev = &pdev->dev;
        int rc = 0;
@@ -510,21 +509,12 @@ static int cctrng_probe(struct platform_device *pdev)
 
        drvdata->circ.buf = (char *)drvdata->data_buf;
 
-       /* Get device resources */
-       /* First CC registers space */
-       req_mem_cc_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       /* Map registers space */
-       drvdata->cc_base = devm_ioremap_resource(dev, req_mem_cc_regs);
+       drvdata->cc_base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(drvdata->cc_base)) {
                dev_err(dev, "Failed to ioremap registers");
                return PTR_ERR(drvdata->cc_base);
        }
 
-       dev_dbg(dev, "Got MEM resource (%s): %pR\n", req_mem_cc_regs->name,
-               req_mem_cc_regs);
-       dev_dbg(dev, "CC registers mapped from %pa to 0x%p\n",
-               &req_mem_cc_regs->start, drvdata->cc_base);
-
        /* Then IRQ */
        irq = platform_get_irq(pdev, 0);
        if (irq < 0) {