linux-kernel - [PATCH 1/7] drivers/staging: make android ashmem.c explicitly non-modular

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Date:	Sun, 11 Oct 2015 19:03:15 -0400
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	<linux-kernel@...r.kernel.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	Riley Andrews <riandrews@...roid.com>,
	<devel@...verdev.osuosl.org>
Subject: [PATCH 1/7] drivers/staging: make android ashmem.c explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/staging/android/Kconfig:config ASHMEM
drivers/staging/android/Kconfig:        bool "Enable the Anonymous Shared Memory Subsystem"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

We replace module.h with init.h and export.h ; the latter since this
file uses the global THIS_MODULE.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: "Arve Hjønnevåg" <arve@...roid.com>
Cc: Riley Andrews <riandrews@...roid.com>
Cc: devel@...verdev.osuosl.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 drivers/staging/android/ashmem.c | 20 +++-----------------
 1 file changed, 3 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/android/ashmem.c b/drivers/staging/android/ashmem.c
index f7f8c811af22..3f2a3d611e4b 100644
--- a/drivers/staging/android/ashmem.c
+++ b/drivers/staging/android/ashmem.c
@@ -18,7 +18,8 @@
 
 #define pr_fmt(fmt) "ashmem: " fmt
 
-#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/export.h>
 #include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/falloc.h>
@@ -860,19 +861,4 @@ static int __init ashmem_init(void)
 
 	return 0;
 }
-
-static void __exit ashmem_exit(void)
-{
-	unregister_shrinker(&ashmem_shrinker);
-
-	misc_deregister(&ashmem_misc);
-	kmem_cache_destroy(ashmem_range_cachep);
-	kmem_cache_destroy(ashmem_area_cachep);
-
-	pr_info("unloaded\n");
-}
-
-module_init(ashmem_init);
-module_exit(ashmem_exit);
-
-MODULE_LICENSE("GPL");
+device_initcall(ashmem_init);
-- 
2.6.1

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