checkpatch: add IDR to the deprecated list

As of commit 85656ec193e9, the IDR interface is marked as deprecated in
the documentation, but no checks are made in that regard for new code.
Add the existing IDR initialization APIs to the deprecated list in
checkpatch, so that if new code is introduced using these APIs, a warning
is emitted.

Link: https://lkml.kernel.org/r/20251031111908.2266077-2-clopez@suse.de
Signed-off-by: Carlos López <clopez@suse.de>
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6729f18..d58ca96 100755 (executable)
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -860,6 +860,10 @@ our %deprecated_apis = (
        "kunmap"                                => "kunmap_local",
        "kmap_atomic"                           => "kmap_local_page",
        "kunmap_atomic"                         => "kunmap_local",
+       #These should be enough to drive away new IDR users
+       "DEFINE_IDR"                            => "DEFINE_XARRAY",
+       "idr_init"                              => "xa_init",
+       "idr_init_base"                         => "xa_init_flags"
 );
 
 #Create a search pattern for all these strings to speed up a loop below