iio: core: Use pr_err instead of printk

Use of pr_err is preferred to printk.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index f721157..e4780b4 100644 (file)
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -9,6 +9,8 @@
  * Based on elements of hwmon and input subsystems.
  */
 
+#define pr_fmt(fmt) "iio-core: " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/idr.h>
@@ -132,16 +134,13 @@ static int __init iio_init(void)
        /* Register sysfs bus */
        ret  = bus_register(&iio_bus_type);
        if (ret < 0) {
-               printk(KERN_ERR
-                      "%s could not register bus type\n",
-                       __FILE__);
+               pr_err("could not register bus type\n");
                goto error_nothing;
        }
 
        ret = alloc_chrdev_region(&iio_devt, 0, IIO_DEV_MAX, "iio");
        if (ret < 0) {
-               printk(KERN_ERR "%s: failed to allocate char dev region\n",
-                      __FILE__);
+               pr_err("failed to allocate char dev region\n");
                goto error_unregister_bus_type;
        }
 
@@ -951,7 +950,7 @@ struct iio_dev *iio_device_alloc(int sizeof_priv)
                dev->id = ida_simple_get(&iio_ida, 0, 0, GFP_KERNEL);
                if (dev->id < 0) {
                        /* cannot use a dev_err as the name isn't available */
-                       printk(KERN_ERR "Failed to get id\n");
+                       pr_err("failed to get device id\n");
                        kfree(dev);
                        return NULL;
                }