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authorChristophe Leroy <christophe.leroy@csgroup.eu>2021-05-08 12:25:44 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2021-05-12 04:07:39 +0300
commitbc581dbab26edf0b6acc98c76943b4a0c7d672a2 (patch)
tree2629ec31e39cd87f72bf4bf9db172d6d2d73a2c1 /arch
parent7315e457d6bc342d06ba0b7ee498221c5237a547 (diff)
downloadlinux-bc581dbab26edf0b6acc98c76943b4a0c7d672a2.tar.xz
powerpc/signal: Fix possible build failure with unsafe_copy_fpr_{to/from}_user
When neither CONFIG_VSX nor CONFIG_PPC_FPU_REGS are selected, unsafe_copy_fpr_to_user() and unsafe_copy_fpr_from_user() are doing nothing. Then, unless the 'label' operand is used elsewhere, GCC complains about it being defined but not used. To fix that, add an impossible 'goto label'. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/cadc0a328bc8e6c5bf133193e7547d5c10ae7895.1620465920.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/kernel/signal.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h
index f4aafa337c2e..1f07317964e4 100644
--- a/arch/powerpc/kernel/signal.h
+++ b/arch/powerpc/kernel/signal.h
@@ -166,9 +166,9 @@ copy_ckfpr_from_user(struct task_struct *task, void __user *from)
}
#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
#else
-#define unsafe_copy_fpr_to_user(to, task, label) do { } while (0)
+#define unsafe_copy_fpr_to_user(to, task, label) do { if (0) goto label;} while (0)
-#define unsafe_copy_fpr_from_user(task, from, label) do { } while (0)
+#define unsafe_copy_fpr_from_user(task, from, label) do { if (0) goto label;} while (0)
static inline unsigned long
copy_fpr_to_user(void __user *to, struct task_struct *task)