staging: octeon-usb: delete redudant prefetches
authorAaro Koskinen <aaro.koskinen@iki.fi>
Sun, 11 May 2014 11:15:19 +0000 (14:15 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 23 May 2014 17:01:08 +0000 (02:01 +0900)
cvmx_usb_pipe fits into a cache-line so additional prefetches are not
really helping anything.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/octeon-usb/octeon-hcd.c

index 2d15001b3061baca3a4037459d044d193b385457..b0c5f51f990ed2d7187b55effa9d7f653044dfee 100644 (file)
@@ -2008,7 +2008,6 @@ static struct cvmx_usb_pipe *__cvmx_usb_find_ready_pipe(
                         ((((int)current_frame - (int)pipe->split_sc_frame)
                           & 0x7f) < 0x40)) &&
                        (!usb->active_split || (usb->active_split == t))) {
-                       CVMX_PREFETCH(pipe, 128);
                        CVMX_PREFETCH(t, 0);
                        return pipe;
                }
@@ -2660,7 +2659,6 @@ static int __cvmx_usb_poll_channel(struct cvmx_usb_state *usb, int channel)
        /* Make sure this channel is tied to a valid pipe */
        pipe = usb->pipe_for_channel[channel];
        CVMX_PREFETCH(pipe, 0);
-       CVMX_PREFETCH(pipe, 128);
        if (!pipe)
                return 0;
        transaction = list_first_entry(&pipe->transactions,