Merge tag 'platform-drivers-x86-v5.1-1' of git://git.infradead.org/linux-platform...

[sfrench/cifs-2.6.git] / scripts / mod / file2alias.c

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index d0e41723627f96cd79ff2975b1cd1b7aba4e4f3c..e17a29ae2e97adfbf4dcd576452ca807427c37a7 100644 (file)
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -40,6 +40,7 @@ typedef struct {
 typedef struct {
        __u8 b[16];
 } uuid_t;
+#define        UUID_STRING_LEN         36
 
 /* Big exception to the "don't include kernel headers into userspace, which
  * even potentially has different endianness and word sizes, since
@@ -53,6 +54,9 @@ struct devtable {
        int (*do_entry)(const char *filename, void *symval, char *alias);
 };
 
+/* Size of alias provided to do_entry functions */
+#define ALIAS_SIZE 500
+
 /* Define a variable f that holds the value of field f of struct devid
  * based at address m.
  */
@@ -1305,6 +1309,27 @@ static int do_tee_entry(const char *filename, void *symval, char *alias)
        return 1;
 }
 
+/* Looks like: wmi:guid */
+static int do_wmi_entry(const char *filename, void *symval, char *alias)
+{
+       int len;
+       DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
+
+       if (strlen(*guid_string) != UUID_STRING_LEN) {
+               warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
+                               *guid_string, filename);
+               return 0;
+       }
+
+       len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
+       if (len < 0 || len >= ALIAS_SIZE) {
+               warn("Could not generate all MODULE_ALIAS's in '%s'\n",
+                               filename);
+               return 0;
+       }
+       return 1;
+}
+
 /* Does namelen bytes of name exactly match the symbol? */
 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
 {
@@ -1321,7 +1346,7 @@ static void do_table(void *symval, unsigned long size,
                     struct module *mod)
 {
        unsigned int i;
-       char alias[500];
+       char alias[ALIAS_SIZE];
 
        device_id_check(mod->name, device_id, size, id_size, symval);
        /* Leave last one: it's the terminator. */
@@ -1376,6 +1401,7 @@ static const struct devtable devtable[] = {
        {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
        {"typec", SIZE_typec_device_id, do_typec_entry},
        {"tee", SIZE_tee_client_device_id, do_tee_entry},
+       {"wmi", SIZE_wmi_device_id, do_wmi_entry},
 };
 
 /* Create MODULE_ALIAS() statements.