linux-kernel - [PATCH v9 03/14] module: Make internal.h and decompress.c more compliant

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Date:   Mon, 28 Feb 2022 23:43:11 +0000
From:   Aaron Tomlin <atomlin@...hat.com>
To:     mcgrof@...nel.org, christophe.leroy@...roup.eu, pmladek@...e.com
Cc:     cl@...ux.com, mbenes@...e.cz, akpm@...ux-foundation.org,
        jeyu@...nel.org, linux-kernel@...r.kernel.org,
        linux-modules@...r.kernel.org, void@...ifault.com,
        atomlin@...mlin.com, allen.lkml@...il.com, joe@...ches.com,
        msuchanek@...e.de, oleksandr@...alenko.name,
        jason.wessel@...driver.com, daniel.thompson@...aro.org
Subject: [PATCH v9 03/14] module: Make internal.h and decompress.c more compliant

This patch will address the following warning and style violations
generated by ./scripts/checkpatch.pl in strict mode:

  WARNING: Use #include <linux/module.h> instead of <asm/module.h>
  #10: FILE: kernel/module/internal.h:10:
  +#include <asm/module.h>

  CHECK: spaces preferred around that '-' (ctx:VxV)
  #18: FILE: kernel/module/internal.h:18:
  +#define INIT_OFFSET_MASK (1UL << (BITS_PER_LONG-1))

  CHECK: Please use a blank line after function/struct/union/enum declarations
  #69: FILE: kernel/module/internal.h:69:
  +}
  +static inline void module_decompress_cleanup(struct load_info *info)
						   ^
  CHECK: extern prototypes should be avoided in .h files
  #84: FILE: kernel/module/internal.h:84:
  +extern int mod_verify_sig(const void *mod, struct load_info *info);

  WARNING: Missing a blank line after declarations
  #116: FILE: kernel/module/decompress.c:116:
  +               struct page *page = module_get_next_page(info);
  +               if (!page) {

  WARNING: Missing a blank line after declarations
  #174: FILE: kernel/module/decompress.c:174:
  +               struct page *page = module_get_next_page(info);
  +               if (!page) {

  CHECK: Please use a blank line after function/struct/union/enum declarations
  #258: FILE: kernel/module/decompress.c:258:
  +}
  +static struct kobj_attribute module_compression_attr = __ATTR_RO(compression);

Note: Fortunately, the multiple-include optimisation found in
include/linux/module.h will prevent duplication/or inclusion more than
once.

Fixes: f314dfea16a ("modsign: log module name in the event of an error")
Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>
Signed-off-by: Aaron Tomlin <atomlin@...hat.com>
---
 kernel/module/decompress.c | 3 +++
 kernel/module/internal.h   | 6 ++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/kernel/module/decompress.c b/kernel/module/decompress.c
index d14d6443225a..2fc7081dd7c1 100644
--- a/kernel/module/decompress.c
+++ b/kernel/module/decompress.c
@@ -113,6 +113,7 @@ static ssize_t module_gzip_decompress(struct load_info *info,
 
 	do {
 		struct page *page = module_get_next_page(info);
+
 		if (!page) {
 			retval = -ENOMEM;
 			goto out_inflate_end;
@@ -171,6 +172,7 @@ static ssize_t module_xz_decompress(struct load_info *info,
 
 	do {
 		struct page *page = module_get_next_page(info);
+
 		if (!page) {
 			retval = -ENOMEM;
 			goto out;
@@ -256,6 +258,7 @@ static ssize_t compression_show(struct kobject *kobj,
 {
 	return sysfs_emit(buf, "%s\n", __stringify(MODULE_COMPRESSION));
 }
+
 static struct kobj_attribute module_compression_attr = __ATTR_RO(compression);
 
 static int __init module_decompress_sysfs_init(void)
diff --git a/kernel/module/internal.h b/kernel/module/internal.h
index ea8c4c02614c..e0775e66bcf7 100644
--- a/kernel/module/internal.h
+++ b/kernel/module/internal.h
@@ -6,7 +6,8 @@
  */
 
 #include <linux/elf.h>
-#include <asm/module.h>
+#include <linux/compiler.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 
 #ifndef ARCH_SHF_SMALL
@@ -54,7 +55,7 @@ struct load_info {
 	} index;
 };
 
-extern int mod_verify_sig(const void *mod, struct load_info *info);
+int mod_verify_sig(const void *mod, struct load_info *info);
 
 #ifdef CONFIG_MODULE_DECOMPRESS
 int module_decompress(struct load_info *info, const void *buf, size_t size);
@@ -65,6 +66,7 @@ static inline int module_decompress(struct load_info *info,
 {
 	return -EOPNOTSUPP;
 }
+
 static inline void module_decompress_cleanup(struct load_info *info)
 {
 }
-- 
2.34.1