arm64: use {COMPAT,}SYSCALL_DEFINE0 for sigreturn

We don't currently annotate our various sigreturn functions as syscalls, as we need to do to use pt_regs syscall wrappers. Let's mark them as real syscalls. For compat_sys_sigreturn and compat_sys_rt_sigreturn, this changes the return type from int to long, matching the prototypes in sys32.c. Signed-off-by: Mark Rutland <[email protected]> Reviewed-by: Dominik Brodowski <[email protected]> Acked-by: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Signed-off-by: Will Deacon <[email protected]>
modi0012 · Jul 12, 2018 · bf4ce5c · bf4ce5c
1 parent 3f7decc
commit bf4ce5c
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
@@ -539,7 +539,7 @@ static int restore_sigframe(struct pt_regs *regs,
 	return err;
 }
 
-asmlinkage long sys_rt_sigreturn(void)
+SYSCALL_DEFINE0(rt_sigreturn)
 {
 	struct pt_regs *regs = current_pt_regs();
 	struct rt_sigframe __user *frame;

diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
@@ -285,7 +285,7 @@ static int compat_restore_sigframe(struct pt_regs *regs,
 	return err;
 }
 
-asmlinkage int compat_sys_sigreturn(void)
+COMPAT_SYSCALL_DEFINE0(sigreturn)
 {
 	struct pt_regs *regs = current_pt_regs();
 	struct compat_sigframe __user *frame;
@@ -316,7 +316,7 @@ asmlinkage int compat_sys_sigreturn(void)
 	return 0;
 }
 
-asmlinkage int compat_sys_rt_sigreturn(void)
+COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
 {
 	struct pt_regs *regs = current_pt_regs();
 	struct compat_rt_sigframe __user *frame;