module: allow ndiswrapper to use GPL-only symbols

A change after 2.6.24 broke ndiswrapper by accidentally removing its
access to GPL-only symbols.  Revert that change and add comments about
the reasons why ndiswrapper and driverloader are treated in a special
way.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Acked-by: Greg KH <gregkh@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jon Masters <jonathan@jonmasters.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/kernel/module.c b/kernel/module.c
index 901cd6ac2f11..be4807fb90e4 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1933,8 +1933,15 @@ static struct module *load_module(void __user *umod,
         /* Set up license info based on the info section */
         set_license(mod, get_modinfo(sechdrs, infoindex, "license"));
 
+        /*
+         * ndiswrapper is under GPL by itself, but loads proprietary modules.
+         * Don't use add_taint_module(), as it would prevent ndiswrapper from
+         * using GPL-only symbols it needs.
+         */
         if (strcmp(mod->name, "ndiswrapper") == 0)
-                add_taint_module(mod, TAINT_PROPRIETARY_MODULE);
+                add_taint(TAINT_PROPRIETARY_MODULE);
+
+        /* driverloader was caught wrongly pretending to be under GPL */
         if (strcmp(mod->name, "driverloader") == 0)
                 add_taint_module(mod, TAINT_PROPRIETARY_MODULE);