powerpc/kuap: Remove __kuap_assert_locked()

__kuap_assert_locked() is redundant with
__kuap_get_and_assert_locked().

Move the verification of CONFIG_PPC_KUAP_DEBUG in kuap_assert_locked()
and make it call __kuap_get_and_assert_locked() directly.

Signed-off-by: Christophe Leroy <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://lore.kernel.org/r/1a60198a[e-mail]

arch/powerpc/include/asm/book3s/32/kup.h

···
 	return kuap;
 }
 
-static inline void __kuap_assert_locked(void)
-{
-	__kuap_get_and_assert_locked();
-}
-
 static __always_inline void __allow_user_access(void __user *to, const void __user *from,
 						u32 size, unsigned long dir)
 {

arch/powerpc/include/asm/book3s/64/kup.h

···
 	return amr;
 }
 
-static inline void __kuap_assert_locked(void)
-{
-	if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG))
-		WARN_ON_ONCE(mfspr(SPRN_AMR) != AMR_KUAP_BLOCKED);
-}
-
 /*
  * We support individually allowing read or write, but we don't support nesting
  * because that would require an expensive read/modify write of the AMR.

arch/powerpc/include/asm/kup.h

···
 	if (kuap_is_disabled())
 		return;
 
-	__kuap_assert_locked();
+	if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG))
+		__kuap_get_and_assert_locked();
 }
 
 #ifdef CONFIG_PPC32

arch/powerpc/include/asm/nohash/32/kup-8xx.h

···
 	return kuap;
 }
 
-static inline void __kuap_assert_locked(void)
-{
-	if (IS_ENABLED(CONFIG_PPC_KUAP_DEBUG))
-		__kuap_get_and_assert_locked();
-}
-
 static inline void __allow_user_access(void __user *to, const void __user *from,
 				       unsigned long size, unsigned long dir)
 {