Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=884c3d751093446918c2f7a4b2c745f28cf91c39
Commit:     884c3d751093446918c2f7a4b2c745f28cf91c39
Parent:     54493c10069741a02cd34c2b44a6bfdb85e7de6a
Author:     Akinobu Mita <[EMAIL PROTECTED]>
AuthorDate: Wed May 9 02:33:32 2007 -0700
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed May 9 12:30:49 2007 -0700

    cm4000_cs: use bitrev
    
    Cleanup using bitrev8 in cm4000_cs driver.
    
    Cc: Harald Welte <[EMAIL PROTECTED]>
    Signed-off-by: Akinobu Mita <[EMAIL PROTECTED]>
    Cc: Dominik Brodowski <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 drivers/char/pcmcia/Kconfig     |    1 +
 drivers/char/pcmcia/cm4000_cs.c |   35 ++++++-----------------------------
 2 files changed, 7 insertions(+), 29 deletions(-)

diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index 27c1179..f25facd 100644
--- a/drivers/char/pcmcia/Kconfig
+++ b/drivers/char/pcmcia/Kconfig
@@ -21,6 +21,7 @@ config SYNCLINK_CS
 config CARDMAN_4000
        tristate "Omnikey Cardman 4000 support"
        depends on PCMCIA
+       select BITREVERSE
        help
          Enable support for the Omnikey Cardman 4000 PCMCIA Smartcard
          reader.
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index 8cbc64f..561d0e1 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -31,6 +31,7 @@
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/delay.h>
+#include <linux/bitrev.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -194,41 +195,17 @@ static inline unsigned char xinb(unsigned short port)
 }
 #endif
 
-#define        b_0000  15
-#define        b_0001  14
-#define        b_0010  13
-#define        b_0011  12
-#define        b_0100  11
-#define        b_0101  10
-#define        b_0110  9
-#define        b_0111  8
-#define        b_1000  7
-#define        b_1001  6
-#define        b_1010  5
-#define        b_1011  4
-#define        b_1100  3
-#define        b_1101  2
-#define        b_1110  1
-#define        b_1111  0
-
-static unsigned char irtab[16] = {
-       b_0000, b_1000, b_0100, b_1100,
-       b_0010, b_1010, b_0110, b_1110,
-       b_0001, b_1001, b_0101, b_1101,
-       b_0011, b_1011, b_0111, b_1111
-};
+static inline unsigned char invert_revert(unsigned char ch)
+{
+       return bitrev8(~ch);
+}
 
 static void str_invert_revert(unsigned char *b, int len)
 {
        int i;
 
        for (i = 0; i < len; i++)
-               b[i] = (irtab[b[i] & 0x0f] << 4) | irtab[b[i] >> 4];
-}
-
-static unsigned char invert_revert(unsigned char ch)
-{
-       return (irtab[ch & 0x0f] << 4) | irtab[ch >> 4];
+               b[i] = invert_revert(b[i]);
 }
 
 #define        ATRLENCK(dev,pos) \
-
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