diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-11-26 09:23:57 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-11-26 09:23:57 +1100 |
| commit | 2a859ab07b6ab66f4134c4fffc341398bd3d328c (patch) | |
| tree | c5e7eaf3bffbc18feb326940e39794328d98dc07 /arch/alpha/kernel/osf_sys.c | |
| parent | cedddd812a79a4fda3885a15711aee3de78c4a24 (diff) | |
| parent | e716e014384688d1a50d1aa5213ee74748c6d4e0 (diff) | |
Merge branch 'merge' into next
Merge my own merge branch to get various fixes from there
and upstream, especially the hvc console tty refcouting fixes
which which testing is quite a bit harder...
Diffstat (limited to 'arch/alpha/kernel/osf_sys.c')
| -rw-r--r-- | arch/alpha/kernel/osf_sys.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 9eb090582cf..1e6956a9060 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -793,8 +793,7 @@ SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer, case GSI_UACPROC: if (nbytes < sizeof(unsigned int)) return -EINVAL; - w = (current_thread_info()->flags >> ALPHA_UAC_SHIFT) & - UAC_BITMASK; + w = current_thread_info()->status & UAC_BITMASK; if (put_user(w, (unsigned int __user *)buffer)) return -EFAULT; return 1; @@ -904,24 +903,20 @@ SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer, break; case SSI_NVPAIRS: { - unsigned long v, w, i; - unsigned int old, new; + unsigned __user *p = buffer; + unsigned i; - for (i = 0; i < nbytes; ++i) { + for (i = 0, p = buffer; i < nbytes; ++i, p += 2) { + unsigned v, w, status; - if (get_user(v, 2*i + (unsigned int __user *)buffer)) - return -EFAULT; - if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer)) + if (get_user(v, p) || get_user(w, p + 1)) return -EFAULT; switch (v) { case SSIN_UACPROC: - again: - old = current_thread_info()->flags; - new = old & ~(UAC_BITMASK << ALPHA_UAC_SHIFT); - new = new | (w & UAC_BITMASK) << ALPHA_UAC_SHIFT; - if (cmpxchg(¤t_thread_info()->flags, - old, new) != old) - goto again; + w &= UAC_BITMASK; + status = current_thread_info()->status; + status = (status & ~UAC_BITMASK) | w; + current_thread_info()->status = status; break; default: |