aboutsummaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorAkinobu Mita <akinobu.mita@gmail.com>2007-05-09 02:33:32 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 12:30:49 -0700
commit884c3d751093446918c2f7a4b2c745f28cf91c39 (patch)
tree0400743d4b53a0ea208bfef332c5e7bcdda720d2 /drivers
parent54493c10069741a02cd34c2b44a6bfdb85e7de6a (diff)
cm4000_cs: use bitrev
Cleanup using bitrev8 in cm4000_cs driver. Cc: Harald Welte <laforge@gnumonks.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/pcmcia/Kconfig1
-rw-r--r--drivers/char/pcmcia/cm4000_cs.c35
2 files changed, 7 insertions, 29 deletions
diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
index 27c1179ee52..f25facd97bb 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 8cbc64fe0fe..561d0e151d0 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) \