at86rf230: use devm_gpio_request_one

This patch replace the gpio_request functions with devm_gpio_request_one
functions. Then we don't need to take care about freeing gpios.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 5856488..d52700f 100644 (file)
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -1074,27 +1074,17 @@ static int at86rf230_probe(struct spi_device *spi)
        }
 
        if (gpio_is_valid(pdata->rstn)) {
-               rc = gpio_request(pdata->rstn, "rstn");
+               rc = devm_gpio_request_one(&spi->dev, pdata->rstn,
+                                          GPIOF_OUT_INIT_HIGH, "rstn");
                if (rc)
                        return rc;
        }
 
        if (gpio_is_valid(pdata->slp_tr)) {
-               rc = gpio_request(pdata->slp_tr, "slp_tr");
+               rc = devm_gpio_request_one(&spi->dev, pdata->slp_tr,
+                                          GPIOF_OUT_INIT_LOW, "slp_tr");
                if (rc)
-                       goto err_slp_tr;
-       }
-
-       if (gpio_is_valid(pdata->rstn)) {
-               rc = gpio_direction_output(pdata->rstn, 1);
-               if (rc)
-                       goto err_gpio_dir;
-       }
-
-       if (gpio_is_valid(pdata->slp_tr)) {
-               rc = gpio_direction_output(pdata->slp_tr, 0);
-               if (rc)
-                       goto err_gpio_dir;
+                       return rc;
        }
 
        /* Reset */
@@ -1108,13 +1098,12 @@ static int at86rf230_probe(struct spi_device *spi)
 
        rc = __at86rf230_detect_device(spi, &man_id, &part, &version);
        if (rc < 0)
-               goto err_gpio_dir;
+               return rc;
 
        if (man_id != 0x001f) {
                dev_err(&spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n",
                        man_id >> 8, man_id & 0xFF);
-               rc = -EINVAL;
-               goto err_gpio_dir;
+               return -EINVAL;
        }
 
        switch (part) {
@@ -1141,16 +1130,12 @@ static int at86rf230_probe(struct spi_device *spi)
        }
 
        dev_info(&spi->dev, "Detected %s chip version %d\n", chip, version);
-       if (!ops) {
-               rc = -ENOTSUPP;
-               goto err_gpio_dir;
-       }
+       if (!ops)
+               return -ENOTSUPP;
 
        dev = ieee802154_alloc_device(sizeof(*lp), ops);
-       if (!dev) {
-               rc = -ENOMEM;
-               goto err_gpio_dir;
-       }
+       if (!dev)
+               return -ENOMEM;
 
        lp = dev->priv;
        lp->dev = dev;
@@ -1212,35 +1197,21 @@ err_hw_init:
        mutex_destroy(&lp->bmux);
        ieee802154_free_device(lp->dev);
 
-err_gpio_dir:
-       if (gpio_is_valid(pdata->slp_tr))
-               gpio_free(pdata->slp_tr);
-err_slp_tr:
-       if (gpio_is_valid(pdata->rstn))
-               gpio_free(pdata->rstn);
        return rc;
 }
 
 static int at86rf230_remove(struct spi_device *spi)
 {
        struct at86rf230_local *lp = spi_get_drvdata(spi);
-       struct at86rf230_platform_data *pdata = spi->dev.platform_data;
 
        /* mask all at86rf230 irq's */
        at86rf230_write_subreg(lp, SR_IRQ_MASK, 0);
        ieee802154_unregister_device(lp->dev);
-
        flush_work(&lp->irqwork);
-
-       if (gpio_is_valid(pdata->slp_tr))
-               gpio_free(pdata->slp_tr);
-       if (gpio_is_valid(pdata->rstn))
-               gpio_free(pdata->rstn);
-
        mutex_destroy(&lp->bmux);
        ieee802154_free_device(lp->dev);
-
        dev_dbg(&spi->dev, "unregistered at86rf230\n");
+
        return 0;
 }