Revision 7e3fd813717693597daaa95dee875f4cb2d911ef authored by Lv Zheng on 05 July 2016, 11:18:07 UTC, committed by Rafael J. Wysocki on 05 July 2016, 21:02:34 UTC
The FIFO unlocking mechanism in acpi_dbg has been broken by the following commit: Commit: 287980e49ffc0f6d911601e7e352a812ed27768e Subject: remove lots of IS_ERR_VALUE abuses It converted !IS_ERR_VALUE(ret) into !ret which was not entirely correct. Fix the regression by taking ret > 0 into account too as appropriate. Fixes: 287980e49ffc (remove lots of IS_ERR_VALUE abuses) Signed-off-by: Lv Zheng <lv.zheng@intel.com> [ rjw: Simplifications, changelog & subject massage ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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systbls.h
#ifndef _SYSTBLS_H
#define _SYSTBLS_H
#include <linux/signal.h>
#include <linux/kernel.h>
#include <linux/compat.h>
#include <linux/types.h>
#include <asm/utrap.h>
asmlinkage unsigned long sys_getpagesize(void);
asmlinkage long sparc_pipe(struct pt_regs *regs);
asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs);
asmlinkage long sys_getdomainname(char __user *name, int len);
void do_rt_sigreturn(struct pt_regs *regs);
asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long off);
asmlinkage void sparc_breakpoint(struct pt_regs *regs);
#ifdef CONFIG_SPARC32
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
long sparc_remap_file_pages(unsigned long start, unsigned long size,
unsigned long prot, unsigned long pgoff,
unsigned long flags);
#endif /* CONFIG_SPARC32 */
#ifdef CONFIG_SPARC64
asmlinkage long sys_sparc_ipc(unsigned int call, int first,
unsigned long second,
unsigned long third,
void __user *ptr, long fifth);
asmlinkage long sparc64_personality(unsigned long personality);
asmlinkage long sys64_munmap(unsigned long addr, size_t len);
asmlinkage unsigned long sys64_mremap(unsigned long addr,
unsigned long old_len,
unsigned long new_len,
unsigned long flags,
unsigned long new_addr);
asmlinkage long sys_utrap_install(utrap_entry_t type,
utrap_handler_t new_p,
utrap_handler_t new_d,
utrap_handler_t __user *old_p,
utrap_handler_t __user *old_d);
asmlinkage long sparc_memory_ordering(unsigned long model,
struct pt_regs *regs);
asmlinkage void sparc64_set_context(struct pt_regs *regs);
asmlinkage void sparc64_get_context(struct pt_regs *regs);
asmlinkage long sys32_truncate64(const char __user * path,
unsigned long high,
unsigned long low);
asmlinkage long sys32_ftruncate64(unsigned int fd,
unsigned long high,
unsigned long low);
struct compat_stat64;
asmlinkage long compat_sys_stat64(const char __user * filename,
struct compat_stat64 __user *statbuf);
asmlinkage long compat_sys_lstat64(const char __user * filename,
struct compat_stat64 __user *statbuf);
asmlinkage long compat_sys_fstat64(unsigned int fd,
struct compat_stat64 __user * statbuf);
asmlinkage long compat_sys_fstatat64(unsigned int dfd,
const char __user *filename,
struct compat_stat64 __user * statbuf, int flag);
asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
char __user *ubuf,
compat_size_t count,
unsigned long poshi,
unsigned long poslo);
asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
char __user *ubuf,
compat_size_t count,
unsigned long poshi,
unsigned long poslo);
asmlinkage long compat_sys_readahead(int fd,
unsigned long offhi,
unsigned long offlo,
compat_size_t count);
long compat_sys_fadvise64(int fd,
unsigned long offhi,
unsigned long offlo,
compat_size_t len, int advice);
long compat_sys_fadvise64_64(int fd,
unsigned long offhi, unsigned long offlo,
unsigned long lenhi, unsigned long lenlo,
int advice);
long sys32_sync_file_range(unsigned int fd,
unsigned long off_high, unsigned long off_low,
unsigned long nb_high, unsigned long nb_low,
unsigned int flags);
asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
u32 lenhi, u32 lenlo);
asmlinkage long compat_sys_fstat64(unsigned int fd,
struct compat_stat64 __user * statbuf);
asmlinkage long compat_sys_fstatat64(unsigned int dfd,
const char __user *filename,
struct compat_stat64 __user * statbuf,
int flag);
#endif /* CONFIG_SPARC64 */
#endif /* _SYSTBLS_H */
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