gcc-4.6: kernel/*: Fix unused but set warnings

No real bugs I believe, just some dead code.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: andi@firstfloor.org
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 3 insertions, 12 deletions

diff --git a/kernel/debug/kdb/kdb_bp.c b/kernel/debug/kdb/kdb_bp.c
index 75bd9b3ebbb7..20059ef4459a 100644
--- a/kernel/debug/kdb/kdb_bp.c
+++ b/kernel/debug/kdb/kdb_bp.c
@@ -274,7 +274,6 @@ static int kdb_bp(int argc, const char **argv)
         int i, bpno;
         kdb_bp_t *bp, *bp_check;
         int diag;
-        int free;
         char *symname = NULL;
         long offset = 0ul;
         int nextarg;
@@ -305,7 +304,6 @@ static int kdb_bp(int argc, const char **argv)
         /*
          * Find an empty bp structure to allocate
          */
-        free = KDB_MAXBPT;
         for (bpno = 0, bp = kdb_breakpoints; bpno < KDB_MAXBPT; bpno++, bp++) {
                 if (bp->bp_free)
                         break;
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index ce669174f355..1decafbb6b1a 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1091,11 +1091,10 @@ EXPORT_SYMBOL_GPL(hrtimer_cancel);
  */
 ktime_t hrtimer_get_remaining(const struct hrtimer *timer)
 {
-        struct hrtimer_clock_base *base;
         unsigned long flags;
         ktime_t rem;
 
-        base = lock_hrtimer_base(timer, &flags);
+        lock_hrtimer_base(timer, &flags);
         rem = hrtimer_expires_remaining(timer);
         unlock_hrtimer_base(timer, &flags);
 
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index ab661ebc4895..134f7edb30c6 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1313,7 +1313,7 @@ static struct sched_group *
 find_idlest_group(struct sched_domain *sd, struct task_struct *p,
                   int this_cpu, int load_idx)
 {
-        struct sched_group *idlest = NULL, *this = NULL, *group = sd->groups;
+        struct sched_group *idlest = NULL, *group = sd->groups;
         unsigned long min_load = ULONG_MAX, this_load = 0;
         int imbalance = 100 + (sd->imbalance_pct-100)/2;
 
@@ -1348,7 +1348,6 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p,
 
                 if (local_group) {
                         this_load = avg_load;
-                        this = group;
                 } else if (avg_load < min_load) {
                         min_load = avg_load;
                         idlest = group;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index ca38e8e3e907..f88552c6d227 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1713,10 +1713,7 @@ static __init int sysctl_init(void)
 {
         sysctl_set_parent(NULL, root_table);
 #ifdef CONFIG_SYSCTL_SYSCALL_CHECK
-        {
-                int err;
-                err = sysctl_check_table(current->nsproxy, root_table);
-        }
+        sysctl_check_table(current->nsproxy, root_table);
 #endif
         return 0;
 }
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 19cccc3c3028..492197e2f86c 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -2985,13 +2985,11 @@ static void rb_advance_reader(struct ring_buffer_per_cpu *cpu_buffer)
 
 static void rb_advance_iter(struct ring_buffer_iter *iter)
 {
-        struct ring_buffer *buffer;
         struct ring_buffer_per_cpu *cpu_buffer;
         struct ring_buffer_event *event;
         unsigned length;
 
         cpu_buffer = iter->cpu_buffer;
-        buffer = cpu_buffer->buffer;
 
         /*
          * Check if we are at the end of the buffer.