内核5.7.7编译报错

[zhengbucuo]

   ~/bbswitch  on   master  make  ✔  at 05:45:39 下午 
make -C /lib/modules/5.7.7-amd64-desktop/build M="$(pwd)" modules
make[1]: 进入目录“/usr/src/linux-headers-5.7.7-amd64-desktop”
CC [M] /home/xiaoxi/bbswitch/bbswitch.o
/home/xiaoxi/bbswitch/bbswitch.c: In function ‘bbswitch_init’:
/home/xiaoxi/bbswitch/bbswitch.c:460:18: error: implicit declaration of function ‘proc_create’; did you mean ‘vfs_create’? [-Werror=implicit-function-declaration]
acpi_entry = proc_create("bbswitch", 0664, acpi_root_dir, &bbswitch_fops);
^~~~~~~~~~~
vfs_create
/home/xiaoxi/bbswitch/bbswitch.c:460:16: warning: assignment to ‘struct proc_dir_entry *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
acpi_entry = proc_create("bbswitch", 0664, acpi_root_dir, &bbswitch_fops);
^
/home/xiaoxi/bbswitch/bbswitch.c: In function ‘bbswitch_exit’:
/home/xiaoxi/bbswitch/bbswitch.c:490:5: error: implicit declaration of function ‘remove_proc_entry’; did you mean ‘remove_memory’? [-Werror=implicit-function-declaration]
remove_proc_entry("bbswitch", acpi_root_dir);
^~~~~~~~~~~~~~~~~
remove_memory
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:267：/home/xiaoxi/bbswitch/bbswitch.o] 错误 1
make[1]: *** [Makefile:1732：/home/xiaoxi/bbswitch] 错误 2
make[1]: 离开目录“/usr/src/linux-headers-5.7.7-amd64-desktop”
make: *** [Makefile:13：default] 错误 2
   ~/bbswitch  on   master ?1 

---

解决办法：
#198 #196

diff --git a/bbswitch.c b/bbswitch.c
index 341608f..c81769d 100644
--- a/bbswitch.c
+++ b/bbswitch.c
@@ -35,6 +35,10 @@
 #include <linux/suspend.h>
 #include <linux/seq_file.h>
 #include <linux/pm_runtime.h>
+#include <linux/version.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)
+#include <linux/proc_fs.h>
+#endif
 
 #define BBSWITCH_VERSION "0.8"
 
@@ -375,6 +379,15 @@ static int bbswitch_pm_handler(struct notifier_block *nbp,
     return 0;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)
+static struct proc_ops bbswitch_fops = {
+    .proc_open   = bbswitch_proc_open,
+    .proc_read   = seq_read,
+    .proc_write  = bbswitch_proc_write,
+    .proc_lseek = seq_lseek,
+    .proc_release= single_release
+};
+#else
 static struct file_operations bbswitch_fops = {
     .open   = bbswitch_proc_open,
     .read   = seq_read,
@@ -382,6 +395,7 @@ static struct file_operations bbswitch_fops = {
     .llseek = seq_lseek,
     .release= single_release
 };
+#endif
 
 static struct notifier_block nb = {
     .notifier_call = &bbswitch_pm_handler
(END)