net: wan: sbni: remove assembly crc32 code

There is also a C function doing the same thing. Unless the asm code is
110% faster we could stick to the C function.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/wan/sbni.c b/drivers/net/wan/sbni.c
index 5bbcb5e3ee0c0cf5e9fefff42fb6892541e14548..388ddf60a66d492f0df7ea2c6f008b51a7778252 100644 (file)
--- a/drivers/net/wan/sbni.c
+++ b/drivers/net/wan/sbni.c
@@ -148,10 +148,6 @@ static int  enslave( struct net_device *, struct net_device * );
 static int  emancipate( struct net_device * );
 #endif
 
-#ifdef __i386__
-#define ASM_CRC 1
-#endif
-
 static const char  version[] =
        "Granch SBNI12 driver ver 5.0.1  Jun 22 2001  Denis I.Timofeev.\n";
 
@@ -1551,88 +1547,6 @@ __setup( "sbni=", sbni_setup );
 
 /* -------------------------------------------------------------------------- */
 
-#ifdef ASM_CRC
-
-static u32
-calc_crc32( u32  crc,  u8  *p,  u32  len )
-{
-       register u32  _crc;
-       _crc = crc;
-       
-       __asm__ __volatile__ (
-               "xorl   %%ebx, %%ebx\n"
-               "movl   %2, %%esi\n" 
-               "movl   %3, %%ecx\n" 
-               "movl   $crc32tab, %%edi\n"
-               "shrl   $2, %%ecx\n"
-               "jz     1f\n"
-
-               ".align 4\n"
-       "0:\n"
-               "movb   %%al, %%bl\n"
-               "movl   (%%esi), %%edx\n"
-               "shrl   $8, %%eax\n"
-               "xorb   %%dl, %%bl\n"
-               "shrl   $8, %%edx\n"
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-
-               "movb   %%al, %%bl\n"
-               "shrl   $8, %%eax\n"
-               "xorb   %%dl, %%bl\n"
-               "shrl   $8, %%edx\n"
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-
-               "movb   %%al, %%bl\n"
-               "shrl   $8, %%eax\n"
-               "xorb   %%dl, %%bl\n"
-               "movb   %%dh, %%dl\n" 
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-
-               "movb   %%al, %%bl\n"
-               "shrl   $8, %%eax\n"
-               "xorb   %%dl, %%bl\n"
-               "addl   $4, %%esi\n"
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-
-               "decl   %%ecx\n"
-               "jnz    0b\n"
-
-       "1:\n"
-               "movl   %3, %%ecx\n"
-               "andl   $3, %%ecx\n"
-               "jz     2f\n"
-
-               "movb   %%al, %%bl\n"
-               "shrl   $8, %%eax\n"
-               "xorb   (%%esi), %%bl\n"
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-
-               "decl   %%ecx\n"
-               "jz     2f\n"
-
-               "movb   %%al, %%bl\n"
-               "shrl   $8, %%eax\n"
-               "xorb   1(%%esi), %%bl\n"
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-
-               "decl   %%ecx\n"
-               "jz     2f\n"
-
-               "movb   %%al, %%bl\n"
-               "shrl   $8, %%eax\n"
-               "xorb   2(%%esi), %%bl\n"
-               "xorl   (%%edi,%%ebx,4), %%eax\n"
-       "2:\n"
-               : "=a" (_crc)
-               : "0" (_crc), "g" (p), "g" (len)
-               : "bx", "cx", "dx", "si", "di"
-       );
-
-       return  _crc;
-}
-
-#else  /* ASM_CRC */
-
 static u32
 calc_crc32( u32  crc,  u8  *p,  u32  len )
 {
@@ -1642,9 +1556,6 @@ calc_crc32( u32  crc,  u8  *p,  u32  len )
        return  crc;
 }
 
-#endif /* ASM_CRC */
-
-
 static u32  crc32tab[] __attribute__ ((aligned(8))) = {
        0xD202EF8D,  0xA505DF1B,  0x3C0C8EA1,  0x4B0BBE37,
        0xD56F2B94,  0xA2681B02,  0x3B614AB8,  0x4C667A2E,