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From:   Michal Suchanek <msuchanek@suse.de>
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Cc:     Michal Suchanek <msuchanek@suse.de>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
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        linux-kernel@vger.kernel.org
Subject: [PATCH v2 rebase 26/34] powerpc/64: system call: Fix sparse warning about missing declaration
Date:   Wed, 27 Nov 2019 11:39:02 +0100
Message-Id: <f45bdb3ccb7c6a0c7ee5ff0612a80bce2f44dc0b.1574803685.git.msuchanek@suse.de>
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Sparse warns about missing declarations for these functions:

+arch/powerpc/kernel/syscall_64.c:108:23: warning: symbol 'syscall_exit_prepare' was not declared. Should it be static?
+arch/powerpc/kernel/syscall_64.c:18:6: warning: symbol 'system_call_exception' was not declared. Should it be static?
+arch/powerpc/kernel/syscall_64.c:200:23: warning: symbol 'interrupt_exit_user_prepare' was not declared. Should it be static?
+arch/powerpc/kernel/syscall_64.c:288:23: warning: symbol 'interrupt_exit_kernel_prepare' was not declared. Should it be static?

Add declaration for them.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/include/asm/asm-prototypes.h | 6 ++++++
 arch/powerpc/kernel/syscall_64.c          | 1 +
 2 files changed, 7 insertions(+)

diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h
index 399ca63196e4..841746357833 100644
--- a/arch/powerpc/include/asm/asm-prototypes.h
+++ b/arch/powerpc/include/asm/asm-prototypes.h
@@ -96,6 +96,12 @@ ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, s
 unsigned long __init early_init(unsigned long dt_ptr);
 void __init machine_init(u64 dt_ptr);
 #endif
+#ifdef CONFIG_PPC64
+long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8, unsigned long r0, struct pt_regs *regs);
+notrace unsigned long syscall_exit_prepare(unsigned long r3, struct pt_regs *regs);
+notrace unsigned long interrupt_exit_user_prepare(struct pt_regs *regs, unsigned long msr);
+notrace unsigned long interrupt_exit_kernel_prepare(struct pt_regs *regs, unsigned long msr);
+#endif
 
 long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
 		      u32 len_high, u32 len_low);
diff --git a/arch/powerpc/kernel/syscall_64.c b/arch/powerpc/kernel/syscall_64.c
index d00cfc4a39a9..62f44c3072f3 100644
--- a/arch/powerpc/kernel/syscall_64.c
+++ b/arch/powerpc/kernel/syscall_64.c
@@ -1,4 +1,5 @@
 #include <linux/err.h>
+#include <asm/asm-prototypes.h>
 #include <asm/book3s/64/kup-radix.h>
 #include <asm/cputime.h>
 #include <asm/hw_irq.h>
-- 
2.23.0