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authorAaro Koskinen <aaro.koskinen@iki.fi>2014-05-11 11:15:20 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-23 17:01:09 (GMT)
commit20f6b82992a2500cfc93f41ab0a62105a1440b7d (patch)
tree543f499b3d1fdcb0e22a241cbfbf8ed0d3bde16c /drivers/staging/octeon-usb
parenta4570140b3f80d0dfc71fdcad00b9768db0b8b04 (diff)
staging: octeon-usb: use generic prefetch
Use generic prefetch. Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/octeon-usb')
-rw-r--r--drivers/staging/octeon-usb/octeon-hcd.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c
index b0c5f51..98a493a 100644
--- a/drivers/staging/octeon-usb/octeon-hcd.c
+++ b/drivers/staging/octeon-usb/octeon-hcd.c
@@ -47,6 +47,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>
+#include <linux/prefetch.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/usb.h>
@@ -245,9 +246,6 @@ enum cvmx_usb_pipe_flags {
__CVMX_USB_PIPE_FLAGS_NEED_PING = 1 << 18,
};
-/* Normal prefetch that use the pref instruction. */
-#define CVMX_PREFETCH(address, offset) asm volatile ("pref %[type], %[off](%[rbase])" : : [rbase] "d" (address), [off] "I" (offset), [type] "n" (0))
-
/* Maximum number of times to retry failed transactions */
#define MAX_RETRIES 3
@@ -2008,7 +2006,7 @@ 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(t, 0);
+ prefetch(t);
return pipe;
}
}
@@ -2658,13 +2656,13 @@ 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);
+ prefetch(pipe);
if (!pipe)
return 0;
transaction = list_first_entry(&pipe->transactions,
typeof(*transaction),
node);
- CVMX_PREFETCH(transaction, 0);
+ prefetch(transaction);
/*
* Disconnect this pipe from the HW channel. Later the schedule
@@ -3121,11 +3119,7 @@ static int cvmx_usb_poll(struct cvmx_usb_state *usb)
union cvmx_usbcx_hfnum usbc_hfnum;
union cvmx_usbcx_gintsts usbc_gintsts;
- CVMX_PREFETCH(usb, 0);
- CVMX_PREFETCH(usb, 1*128);
- CVMX_PREFETCH(usb, 2*128);
- CVMX_PREFETCH(usb, 3*128);
- CVMX_PREFETCH(usb, 4*128);
+ prefetch_range(usb, sizeof(*usb));
/* Update the frame counter */
usbc_hfnum.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HFNUM(usb->index));

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