staging: octeon-usb: replace CVMX_CLZ with __fls()

Replace CVMX_CLZ macro with __fls().

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/octeon-usb/cvmx-usb.c b/drivers/staging/octeon-usb/cvmx-usb.c
index 3dd732e..c57e798 100644 (file)
--- a/drivers/staging/octeon-usb/cvmx-usb.c
+++ b/drivers/staging/octeon-usb/cvmx-usb.c
@@ -64,7 +64,6 @@
 // normal prefetches that use the pref instruction
 #define CVMX_PREFETCH_PREFX(X, address, offset) asm volatile ("pref %[type], %[off](%[rbase])" : : [rbase] "d" (address), [off] "I" (offset), [type] "n" (X))
 #define CVMX_PREFETCH_PREF0(address, offset) CVMX_PREFETCH_PREFX(0, address, offset)
-#define CVMX_CLZ(result, input) asm ("clz %[rd],%[rs]" : [rd] "=d" (result) : [rs] "d" (input))
 
 #define MAX_RETRIES            3               /* Maximum number of times to retry failed transactions */
 #define MAX_PIPES              32              /* Maximum number of pipes that can be open at once */
@@ -1893,8 +1892,7 @@ static void __cvmx_usb_schedule(struct cvmx_usb_internal_state *usb, int is_sof)
 
        while (usb->idle_hardware_channels) {
                /* Find an idle channel */
-               CVMX_CLZ(channel, usb->idle_hardware_channels);
-               channel = 31 - channel;
+               channel = __fls(usb->idle_hardware_channels);
                if (unlikely(channel > 7))
                        break;
 
@@ -3121,8 +3119,8 @@ int cvmx_usb_poll(struct cvmx_usb_state *state)
                usbc_haint.u32 = __cvmx_usb_read_csr32(usb, CVMX_USBCX_HAINT(usb->index));
                while (usbc_haint.u32) {
                        int channel;
-                       CVMX_CLZ(channel, usbc_haint.u32);
-                       channel = 31 - channel;
+
+                       channel = __fls(usbc_haint.u32);
                        __cvmx_usb_poll_channel(usb, channel);
                        usbc_haint.u32 ^= 1<<channel;
                }