In Rocky Linux 9.2 got compilation failures related with PDE_DATA

[rodolfojcj]

When using either the DAHDI linux complete 3.2.0 tar.gz file or the master branch sources, trying to compile on Rocky Linux 9.2 fails with error messages like these (not necessarily all of them at the same attempt):

linux/drivers/dahdi/xpp/xbus-core.c:1842:50: error: implicit declaration of function ‘PDE_DATA’; did you mean ‘NODE_DATA’? [-Werror=implicit-function-declaration]
1842 |         return single_open(file, xbus_proc_show, PDE_DATA(inode));
                                                        ^~~~~~~~
|                                                       NODE_DATA

Or

linux/drivers/dahdi/xpp/xbus-core.c:1842:50: warning: passing argument 3 of ‘single_open’ makes pointer from integer without a cast [-Wint-conversion]
1842 |         return single_open(file, xbus_proc_show, PDE_DATA(inode));
|                                                       ^~~~~~~~~~~~~~~
|                                                       |
|                                                       int

Or

linux/drivers/dahdi/xpp/xbus-core.c:1949:28: warning: assignment to ‘void *’ from ‘ int’ makes pointer from integer without a cast [-Wint-conversion]
1949 |         file->private_data = PDE_DATA(inode);

[rodolfojcj]

The attached file dahdi-linux-issue-37-fix-24sept2023.zip has a possible fix to this issue.

I tested it with:

• Ubuntu 23.04, kernel 6.2.0-20-generic
• Ubuntu 22.10, kernel 5.19.0-43-generic
• Ubuntu 22.04, kernel 5.15.0-73-generic
• Ubuntu 20.04, kernel 5.4.0-150-generic
• Ubuntu 18.04, kernel 4.15.0-212-generic
• Ubuntu 16.04, kernel 4.4.0-210-generic
• Debian 12, kernel 6.1.0-10-amd64
• Debian 11, kernel 5.10.0-23-amd64
• Debian 10, kernel 4.19.0-24-amd64
• CentOS 7.9.2009 3.10.0-1160.95.1.el7.x86_64
• Rocky Linux 9.2, kernel 5.14.0-284.25.1.el9_2.x86_64
• Rocky Linux 8.8, kernel 4.18.0-477.21.1.el8_8.x86_64

In all those cases the compilation is successful.

Thanks in advance for any developer of this project that may review and possibly apply this fix for the master branch.