i2c: mxs: Use devm_ioremap_resource()
Use devm_ioremap_resource() in order to make the code simpler,
and remove redundant return value check of platform_get_resource()
because the value is checked by devm_ioremap_resource().
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 0cde4e6..7170fc8 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -806,7 +806,6 @@
struct mxs_i2c_dev *i2c;
struct i2c_adapter *adap;
struct resource *res;
- resource_size_t res_size;
int err, irq;
i2c = devm_kzalloc(dev, sizeof(struct mxs_i2c_dev), GFP_KERNEL);
@@ -819,18 +818,13 @@
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ i2c->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(i2c->regs))
+ return PTR_ERR(i2c->regs);
+
irq = platform_get_irq(pdev, 0);
-
- if (!res || irq < 0)
- return -ENOENT;
-
- res_size = resource_size(res);
- if (!devm_request_mem_region(dev, res->start, res_size, res->name))
- return -EBUSY;
-
- i2c->regs = devm_ioremap_nocache(dev, res->start, res_size);
- if (!i2c->regs)
- return -EBUSY;
+ if (irq < 0)
+ return irq;
err = devm_request_irq(dev, irq, mxs_i2c_isr, 0, dev_name(dev), i2c);
if (err)