mirror of https://gitee.com/openkylin/linux.git
x86: fix sys_sigreturn() return type to be long, not unsigned long
Same as with other system calls, sys_sigreturn() should return a value of type long, not unsigned long. This also matches the behaviour for IA32_EMULATION, see sys32_sigreturn() in arch/x86/ia32/ia32_signal.c . Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: x86@kernel.org Cc: Michael Tautschnig <tautschn@amazon.co.uk> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
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@ -35,7 +35,7 @@ asmlinkage long sys_get_thread_area(struct user_desc __user *);
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#ifdef CONFIG_X86_32
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/* kernel/signal.c */
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asmlinkage unsigned long sys_sigreturn(void);
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asmlinkage long sys_sigreturn(void);
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/* kernel/vm86_32.c */
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struct vm86_struct;
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@ -601,7 +601,7 @@ static int x32_setup_rt_frame(struct ksignal *ksig,
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* Do a signal return; undo the signal stack.
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*/
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#ifdef CONFIG_X86_32
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asmlinkage unsigned long sys_sigreturn(void)
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asmlinkage long sys_sigreturn(void)
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{
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struct pt_regs *regs = current_pt_regs();
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struct sigframe __user *frame;
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