[PATCH 04/11] iio: adc: max1027: Improve include relevance

[Jonathan Cameron <jic23@kernel.org>]

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Drop kernel.h in favor of more specific headers and add includes that were
previously relying on other headers including them.

Whether to include device.h or the relevant sub headers is non obvious.
In this case, there is an access to struct device for
spi->dev.driver->name which is used to name the irq.

The justification from iwyu for the additional includes is:
  #include <asm/byteorder.h>           // for be16_to_cpu
  #include <linux/array_size.h>        // for ARRAY_SIZE
  #include <linux/bitops.h>            // for BIT, GENMASK, fls, hweight32
  #include <linux/cleanup.h>           // for guard
  #include <linux/compiler.h>          // for __aligned
  #include <linux/completion.h>        // for complete, init_completion
  #include <linux/device.h>            // for dev_err, dev_name, devm_kmal. ..
  #include <linux/errno.h>             // for ENOMEM, EINVAL, EBUSY, ETIME...
  #include <linux/interrupt.h>         // for devm_request_irq, irqreturn
  #include <linux/jiffies.h>           // for msecs_to_jiffies
  #include <linux/minmax.h>            // for __cmp_op_max
  #include <linux/mutex.h>             // for class_mutex_constructor, cla...
  #include <linux/stddef.h>            // for NULL, false
  #include <linux/types.h>             // for u8, bool, __be16

stddef.h not directly included as few drivers do this.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
---
 drivers/iio/adc/max1027.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 913665b52cea..22d90efc9ab6 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -12,11 +12,23 @@
   * Partial support for max1027 and similar chips.
   */
 
+#include <linux/array_size.h>
+#include <linux/bitops.h>
+#include <linux/cleanup.h>
+#include <linux/compiler.h>
+#include <linux/completion.h>
 #include <linux/delay.h>
-#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/minmax.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/printk.h>
 #include <linux/spi/spi.h>
+#include <linux/types.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -24,6 +36,8 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 
+#include <asm/byteorder.h>
+
 #define MAX1027_CONV_REG  BIT(7)
 #define MAX1027_SETUP_REG BIT(6)
 #define MAX1027_AVG_REG   BIT(5)
-- 
2.52.0