x86: ignore the sys_getcpu() tcache parameter

[pandora-kernel.git] / kernel / sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index 304b541..d1fe71e 100644 (file)
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1750,7 +1750,7 @@ asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
 }
 
 asmlinkage long sys_getcpu(unsigned __user *cpup, unsigned __user *nodep,
-                          struct getcpu_cache __user *cache)
+                          struct getcpu_cache __user *unused)
 {
        int err = 0;
        int cpu = raw_smp_processor_id();
@@ -1758,24 +1758,6 @@ asmlinkage long sys_getcpu(unsigned __user *cpup, unsigned __user *nodep,
                err |= put_user(cpu, cpup);
        if (nodep)
                err |= put_user(cpu_to_node(cpu), nodep);
-       if (cache) {
-               /*
-                * The cache is not needed for this implementation,
-                * but make sure user programs pass something
-                * valid. vsyscall implementations can instead make
-                * good use of the cache. Only use t0 and t1 because
-                * these are available in both 32bit and 64bit ABI (no
-                * need for a compat_getcpu). 32bit has enough
-                * padding
-                */
-               unsigned long t0, t1;
-               get_user(t0, &cache->blob[0]);
-               get_user(t1, &cache->blob[1]);
-               t0++;
-               t1++;
-               put_user(t0, &cache->blob[0]);
-               put_user(t1, &cache->blob[1]);
-       }
        return err ? -EFAULT : 0;
 }