treewide: Clean up the headers

The rule of thumb is to include the headers we are the direct user of.
In particular, if we need an atomic API, we include <linux/atomic.h>.

On the other hand we should not use headers for no reason. In particular,
if we are not doing any IRQ job, why is the <linux/irq.h> included?

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/examples/chardev.c b/examples/chardev.c
index a337d199b8f9ec14987a4bdcb501a1934342f843..7972304e5356058abc5470ad68f7829deb1ad96f 100644 (file)
--- a/examples/chardev.c
+++ b/examples/chardev.c
@@ -3,15 +3,19 @@
  * you have read from the dev file
  */
 
+#include <linux/atomic.h>
 #include <linux/cdev.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
+#include <linux/kernel.h> /* for sprintf() */
 #include <linux/module.h>
-#include <linux/poll.h>
+#include <linux/printk.h>
+#include <linux/types.h>
+#include <linux/uaccess.h> /* for get_user and put_user */
+
+#include <asm/errno.h>
 
 /*  Prototypes - this would normally go in a .h file */
 static int device_open(struct inode *, struct file *);

diff --git a/examples/chardev2.c b/examples/chardev2.c
index 58ed57b58980940b890d7366c504f539f279cd03..4c8b930d420adf862db0f501dbc7e3338d6ce667 100644 (file)
--- a/examples/chardev2.c
+++ b/examples/chardev2.c
@@ -2,15 +2,17 @@
  * chardev2.c - Create an input/output character device
  */
 
+#include <linux/atomic.h>
 #include <linux/cdev.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/fs.h>
 #include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/kernel.h> /* We are doing kernel work */
 #include <linux/module.h> /* Specifically, a module */
-#include <linux/poll.h>
+#include <linux/printk.h>
+#include <linux/types.h>
+
+#include <asm/errno.h>
 
 #include "chardev.h"
 #define SUCCESS 0

diff --git a/examples/completions.c b/examples/completions.c
index dddf5d74838e6d57b6d9bef41270d00009e7a523..197dea92f99055d911955dc4be8de9c59c3b1cb8 100644 (file)
--- a/examples/completions.c
+++ b/examples/completions.c
@@ -2,6 +2,7 @@
  * completions.c
  */
 #include <linux/completion.h>
+#include <linux/err.h> /* for IS_ERR() */
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/kthread.h>

diff --git a/examples/example_atomic.c b/examples/example_atomic.c
index 02d770f03a79a40ff2ff3cab9694764e0aaa08a8..4cd4897f019b35efd873cf72396846d3c82090e8 100644 (file)
--- a/examples/example_atomic.c
+++ b/examples/example_atomic.c
@@ -1,7 +1,8 @@
 /*
  * example_atomic.c
  */
-#include <linux/interrupt.h>
+#include <linux/atomic.h>
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 

diff --git a/examples/example_mutex.c b/examples/example_mutex.c
index 4eaf823175ccf670ea006021bf79010b8cf4b9d3..3149c23799d4c58c5019183687d947ba7d825afc 100644 (file)
--- a/examples/example_mutex.c
+++ b/examples/example_mutex.c
@@ -1,7 +1,6 @@
 /*
  * example_mutex.c
  */
-#include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>

diff --git a/examples/example_rwlock.c b/examples/example_rwlock.c
index 74a903f17e912a3f3125949891c0a9210a3b780a..9668e756108f67c18e7ec6e72f1a097fd8f51b44 100644 (file)
--- a/examples/example_rwlock.c
+++ b/examples/example_rwlock.c
@@ -1,9 +1,9 @@
 /*
  * example_rwlock.c
  */
-#include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/rwlock.h>
 
 static DEFINE_RWLOCK(myrwlock);
 

diff --git a/examples/example_spinlock.c b/examples/example_spinlock.c
index 5b69df198075be7b169bc3b20d1b9b300a14cf17..862291b9b4fe26ad7a8047cdc74d276129499a70 100644 (file)
--- a/examples/example_spinlock.c
+++ b/examples/example_spinlock.c
@@ -2,7 +2,6 @@
  * example_spinlock.c
  */
 #include <linux/init.h>
-#include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>

diff --git a/examples/sleep.c b/examples/sleep.c
index 931ff5d66ce5acdc65e0874f85dc3c150ebc71f7..dff612a126b09575c382b341a40b0d134339abe9 100644 (file)
--- a/examples/sleep.c
+++ b/examples/sleep.c
@@ -3,13 +3,19 @@
  * at the same time, put all but one to sleep.
  */
 
+#include <linux/atomic.h>
+#include <linux/fs.h>
 #include <linux/kernel.h> /* We're doing kernel work */
 #include <linux/module.h> /* Specifically, a module */
 #include <linux/proc_fs.h> /* Necessary because we use proc fs */
-#include <linux/sched.h> /* For putting processes to sleep and
-                                   waking them up */
+#include <linux/types.h>
 #include <linux/uaccess.h> /* for get_user and put_user */
 #include <linux/version.h>
+#include <linux/wait.h> /* For putting processes to sleep and
+                                   waking them up */
+
+#include <asm/current.h>
+#include <asm/errno.h>
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
 #define HAVE_PROC_OPS