[PATCH] Add sparse annotation to vsyscall.c

Fixes

linux/arch/x86_64/kernel/vsyscall.c:276:7: warning: constant 0x0f40000000000 is so big it is long
linux/arch/x86_64/kernel/vsyscall.c:80:14: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:80:14:    expected void const volatile [noderef] *addr<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:80:14:    got void *<noident>
linux/arch/x86_64/kernel/vsyscall.c:200:7: warning: incorrect type in assignment (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:200:7:    expected unsigned short [usertype] *map1
linux/arch/x86_64/kernel/vsyscall.c:200:7:    got void [noderef] *<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:203:7: warning: incorrect type in assignment (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:203:7:    expected unsigned short [usertype] *map2
linux/arch/x86_64/kernel/vsyscall.c:203:7:    got void [noderef] *<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:215:10: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:215:10:    expected void volatile [noderef] *addr<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:215:10:    got unsigned short [usertype] *map2
linux/arch/x86_64/kernel/vsyscall.c:217:10: warning: incorrect type in argument 1 (different address spaces)
linux/arch/x86_64/kernel/vsyscall.c:217:10:    expected void volatile [noderef] *addr<asn:2>
linux/arch/x86_64/kernel/vsyscall.c:217:10:    got unsigned short [usertype] *map1

Signed-off-by: Andi Kleen <ak@suse.de>

diff --git a/arch/x86_64/kernel/vsyscall.c b/arch/x86_64/kernel/vsyscall.c
index 902783b..ac48c38 100644 (file)
--- a/arch/x86_64/kernel/vsyscall.c
+++ b/arch/x86_64/kernel/vsyscall.c
@@ -77,7 +77,8 @@ static __always_inline void do_vgettimeofday(struct timeval * tv)
                                 __vxtime.tsc_quot) >> 32;
                        /* See comment in x86_64 do_gettimeofday. */
                } else {
-                       usec += ((readl((void *)fix_to_virt(VSYSCALL_HPET) + 0xf0) -
+                       usec += ((readl((void __iomem *)
+                                  fix_to_virt(VSYSCALL_HPET) + 0xf0) -
                                  __vxtime.last) * __vxtime.quot) >> 32;
                }
        } while (read_seqretry(&__xtime_lock, sequence));
@@ -191,7 +192,8 @@ static int vsyscall_sysctl_change(ctl_table *ctl, int write, struct file * filp,
                         void __user *buffer, size_t *lenp, loff_t *ppos)
 {
        extern u16 vsysc1, vsysc2;
-       u16 *map1, *map2;
+       u16 __iomem *map1;
+       u16 __iomem *map2;
        int ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
        if (!write)
                return ret;
@@ -206,11 +208,11 @@ static int vsyscall_sysctl_change(ctl_table *ctl, int write, struct file * filp,
                goto out;
        }
        if (!sysctl_vsyscall) {
-               *map1 = SYSCALL;
-               *map2 = SYSCALL;
+               writew(SYSCALL, map1);
+               writew(SYSCALL, map2);
        } else {
-               *map1 = NOP2;
-               *map2 = NOP2;
+               writew(NOP2, map1);
+               writew(NOP2, map2);
        }
        iounmap(map2);
 out: