As of commit ee18d64c1f632043a02e6f5ba5e045bb26a5465f ("KEYS: Add a keyctl to
install a process's session keyring on its parent [try #6]"), CONFIG_KEYS=y
fails to build on architectures that haven't implemented TIF_NOTIFY_RESUME yet:

security/keys/keyctl.c: In function 'keyctl_session_to_parent':
security/keys/keyctl.c:1312: error: 'TIF_NOTIFY_RESUME' undeclared (first use 
in this function)
security/keys/keyctl.c:1312: error: (Each undeclared identifier is reported 
only once
security/keys/keyctl.c:1312: error: for each function it appears in.)

Make KEYCTL_SESSION_TO_PARENT depend on TIF_NOTIFY_RESUME until blackfin,
m68k, and xtensa have implemented it.

Signed-off-by: Geert Uytterhoeven <[email protected]>
Cc: [email protected]
---
1. This fixes a regression in 2.6.32.
2. Long-time build issues like this make linux-next miss newer build 
   problems.

 security/keys/keyctl.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 06ec722..3a9ad87 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -1236,6 +1236,7 @@ long keyctl_get_security(key_serial_t keyid,
  */
 long keyctl_session_to_parent(void)
 {
+#ifdef TIF_NOTIFY_RESUME
        struct task_struct *me, *parent;
        const struct cred *mycred, *pcred;
        struct cred *cred, *oldcred;
@@ -1326,6 +1327,15 @@ not_permitted:
 error_keyring:
        key_ref_put(keyring_r);
        return ret;
+
+#else /* !TIF_NOTIFY_RESUME */
+       /*
+        * To be removed when TIF_NOTIFY_RESUME has been implemented on
+        * blackfin/m68k/xtensa
+        */
+#warning TIF_NOTIFY_RESUME not implemented
+       return -EOPNOTSUPP;
+#endif /* !TIF_NOTIFY_RESUME */
 }
 
 /*****************************************************************************/
-- 
1.6.0.4

Gr{oetje,eeting}s,

                                                Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                                            -- Linus Torvalds
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