ring-buffer: Fix polling on trace_pipe

[uclinux-h8/linux.git] / kernel / trace / ring_buffer.c

diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 7c56c3d..ff70271 100644 (file)
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -616,10 +616,6 @@ int ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
        struct ring_buffer_per_cpu *cpu_buffer;
        struct rb_irq_work *work;
 
-       if ((cpu == RING_BUFFER_ALL_CPUS && !ring_buffer_empty(buffer)) ||
-           (cpu != RING_BUFFER_ALL_CPUS && !ring_buffer_empty_cpu(buffer, cpu)))
-               return POLLIN | POLLRDNORM;
-
        if (cpu == RING_BUFFER_ALL_CPUS)
                work = &buffer->irq_work;
        else {