Merge branch 'linus' into core/percpu

[linux-2.6-omap-h63xx.git] / drivers / oprofile / cpu_buffer.c

diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index 2e03b6d796d39aac794e6c8c52d5de979f82a7c7..e76d715e4342b70b636183be3e23bbe880a74173 100644 (file)
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -393,16 +393,21 @@ oprofile_write_reserve(struct op_entry *entry, struct pt_regs * const regs,
        return;
 
 fail:
+       entry->event = NULL;
        cpu_buf->sample_lost_overflow++;
 }
 
 int oprofile_add_data(struct op_entry *entry, unsigned long val)
 {
+       if (!entry->event)
+               return 0;
        return op_cpu_buffer_add_data(entry, val);
 }
 
 int oprofile_write_commit(struct op_entry *entry)
 {
+       if (!entry->event)
+               return -EINVAL;
        return op_cpu_buffer_write_commit(entry);
 }