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Commit 0a858857 authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
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[PATCH] atm/ambassador: use bitrev8



Use bitrev8 for ambassador driver.

Cc: Chas Williams <linux-atm-general@lists.sourceforge.net>
Cc: Giuliano Procida at Madge Networks <gprocida@madge.com>
Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 60e657e3
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+1 −0
Original line number Diff line number Diff line
@@ -242,6 +242,7 @@ config ATM_IDT77252_USE_SUNI
config ATM_AMBASSADOR
	tristate "Madge Ambassador (Collage PCI 155 Server)"
	depends on PCI && ATM
	select BITREVERSE
	help
	  This is a driver for ATMizer based ATM card produced by Madge
	  Networks Ltd. Say Y (or M to compile as a module named ambassador)
+3 −14
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/poison.h>
#include <linux/bitrev.h>

#include <asm/atomic.h>
#include <asm/io.h>
@@ -2068,18 +2069,6 @@ static void __devinit amb_ucode_version (amb_dev * dev) {
  PRINTK (KERN_INFO, "microcode version is %u.%u", major, minor);
}
  
// swap bits within byte to get Ethernet ordering
static u8 bit_swap (u8 byte)
{
    const u8 swap[] = {
      0x0, 0x8, 0x4, 0xc,
      0x2, 0xa, 0x6, 0xe,
      0x1, 0x9, 0x5, 0xd,
      0x3, 0xb, 0x7, 0xf
    };
    return ((swap[byte & 0xf]<<4) | swap[byte>>4]);
}

// get end station address
static void __devinit amb_esi (amb_dev * dev, u8 * esi) {
  u32 lower4;
@@ -2101,9 +2090,9 @@ static void __devinit amb_esi (amb_dev * dev, u8 * esi) {
    PRINTDB (DBG_INIT, "ESI:");
    for (i = 0; i < ESI_LEN; ++i) {
      if (i < 4)
	  esi[i] = bit_swap (lower4>>(8*i));
	  esi[i] = bitrev8(lower4>>(8*i));
      else
	  esi[i] = bit_swap (upper2>>(8*(i-4)));
	  esi[i] = bitrev8(upper2>>(8*(i-4)));
      PRINTDM (DBG_INIT, " %02x", esi[i]);
    }