2 files changed, 691 insertions, 117 deletions

diff --git a/lib/Kconfig b/lib/Kconfig
index 028aba9e72af..d5a86aa441ac 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -70,6 +70,16 @@ config CRC32
           kernel tree does. Such modules that use library CRC32 functions
           require M here.
 
+config CRC32_SELFTEST
+        bool "CRC32 perform self test on init"
+        default n
+        depends on CRC32
+        help
+          This option enables the CRC32 library functions to perform a
+          self test on initialization. The self test computes crc32_le
+          and crc32_be over byte strings with random alignment and length
+          and computes the total elapsed time and number of bytes processed.
+
 config CRC7
         tristate "CRC7 functions"
         help
diff --git a/lib/crc32.c b/lib/crc32.c
index c3ce94a06db8..996115d4f377 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -211,137 +211,701 @@ u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
 EXPORT_SYMBOL(crc32_le);
 EXPORT_SYMBOL(crc32_be);
 
-#ifdef UNITTEST
+#ifdef CONFIG_CRC32_SELFTEST
 
-#include <stdlib.h>
-#include <stdio.h>
-
-#if 0                           /*Not used at present */
-static void
-buf_dump(char const *prefix, unsigned char const *buf, size_t len)
+/* 4096 random bytes */
+static u8 __attribute__((__aligned__(8))) test_buf[] =
 {
-        fputs(prefix, stdout);
-        while (len--)
-                printf(" %02x", *buf++);
-        putchar('\n');
-
-}
-#endif
-
-static void bytereverse(unsigned char *buf, size_t len)
+        0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30,
+        0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4,
+        0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60,
+        0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c,
+        0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4,
+        0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a,
+        0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a,
+        0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4,
+        0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9,
+        0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4,
+        0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca,
+        0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61,
+        0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e,
+        0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a,
+        0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f,
+        0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd,
+        0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c,
+        0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88,
+        0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53,
+        0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f,
+        0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4,
+        0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74,
+        0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60,
+        0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09,
+        0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07,
+        0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1,
+        0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f,
+        0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2,
+        0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0,
+        0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95,
+        0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22,
+        0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93,
+        0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86,
+        0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d,
+        0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40,
+        0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b,
+        0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35,
+        0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40,
+        0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63,
+        0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b,
+        0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8,
+        0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72,
+        0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86,
+        0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff,
+        0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed,
+        0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c,
+        0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed,
+        0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30,
+        0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99,
+        0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4,
+        0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80,
+        0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37,
+        0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04,
+        0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e,
+        0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd,
+        0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c,
+        0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09,
+        0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb,
+        0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b,
+        0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53,
+        0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b,
+        0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f,
+        0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff,
+        0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40,
+        0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6,
+        0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb,
+        0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73,
+        0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f,
+        0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4,
+        0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66,
+        0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1,
+        0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80,
+        0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f,
+        0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5,
+        0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7,
+        0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce,
+        0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff,
+        0x22, 0xbb, 0x72, 0x29, 0xb9, 0x44, 0x0b, 0x48,
+        0x1e, 0x84, 0x71, 0x81, 0xe3, 0x6d, 0x73, 0x26,
+        0x92, 0xb4, 0x4d, 0x2a, 0x29, 0xb8, 0x1f, 0x72,
+        0xed, 0xd0, 0xe1, 0x64, 0x77, 0xea, 0x8e, 0x88,
+        0x0f, 0xef, 0x3f, 0xb1, 0x3b, 0xad, 0xf9, 0xc9,
+        0x8b, 0xd0, 0xac, 0xc6, 0xcc, 0xa9, 0x40, 0xcc,
+        0x76, 0xf6, 0x3b, 0x53, 0xb5, 0x88, 0xcb, 0xc8,
+        0x37, 0xf1, 0xa2, 0xba, 0x23, 0x15, 0x99, 0x09,
+        0xcc, 0xe7, 0x7a, 0x3b, 0x37, 0xf7, 0x58, 0xc8,
+        0x46, 0x8c, 0x2b, 0x2f, 0x4e, 0x0e, 0xa6, 0x5c,
+        0xea, 0x85, 0x55, 0xba, 0x02, 0x0e, 0x0e, 0x48,
+        0xbc, 0xe1, 0xb1, 0x01, 0x35, 0x79, 0x13, 0x3d,
+        0x1b, 0xc0, 0x53, 0x68, 0x11, 0xe7, 0x95, 0x0f,
+        0x9d, 0x3f, 0x4c, 0x47, 0x7b, 0x4d, 0x1c, 0xae,
+        0x50, 0x9b, 0xcb, 0xdd, 0x05, 0x8d, 0x9a, 0x97,
+        0xfd, 0x8c, 0xef, 0x0c, 0x1d, 0x67, 0x73, 0xa8,
+        0x28, 0x36, 0xd5, 0xb6, 0x92, 0x33, 0x40, 0x75,
+        0x0b, 0x51, 0xc3, 0x64, 0xba, 0x1d, 0xc2, 0xcc,
+        0xee, 0x7d, 0x54, 0x0f, 0x27, 0x69, 0xa7, 0x27,
+        0x63, 0x30, 0x29, 0xd9, 0xc8, 0x84, 0xd8, 0xdf,
+        0x9f, 0x68, 0x8d, 0x04, 0xca, 0xa6, 0xc5, 0xc7,
+        0x7a, 0x5c, 0xc8, 0xd1, 0xcb, 0x4a, 0xec, 0xd0,
+        0xd8, 0x20, 0x69, 0xc5, 0x17, 0xcd, 0x78, 0xc8,
+        0x75, 0x23, 0x30, 0x69, 0xc9, 0xd4, 0xea, 0x5c,
+        0x4f, 0x6b, 0x86, 0x3f, 0x8b, 0xfe, 0xee, 0x44,
+        0xc9, 0x7c, 0xb7, 0xdd, 0x3e, 0xe5, 0xec, 0x54,
+        0x03, 0x3e, 0xaa, 0x82, 0xc6, 0xdf, 0xb2, 0x38,
+        0x0e, 0x5d, 0xb3, 0x88, 0xd9, 0xd3, 0x69, 0x5f,
+        0x8f, 0x70, 0x8a, 0x7e, 0x11, 0xd9, 0x1e, 0x7b,
+        0x38, 0xf1, 0x42, 0x1a, 0xc0, 0x35, 0xf5, 0xc7,
+        0x36, 0x85, 0xf5, 0xf7, 0xb8, 0x7e, 0xc7, 0xef,
+        0x18, 0xf1, 0x63, 0xd6, 0x7a, 0xc6, 0xc9, 0x0e,
+        0x4d, 0x69, 0x4f, 0x84, 0xef, 0x26, 0x41, 0x0c,
+        0xec, 0xc7, 0xe0, 0x7e, 0x3c, 0x67, 0x01, 0x4c,
+        0x62, 0x1a, 0x20, 0x6f, 0xee, 0x47, 0x4d, 0xc0,
+        0x99, 0x13, 0x8d, 0x91, 0x4a, 0x26, 0xd4, 0x37,
+        0x28, 0x90, 0x58, 0x75, 0x66, 0x2b, 0x0a, 0xdf,
+        0xda, 0xee, 0x92, 0x25, 0x90, 0x62, 0x39, 0x9e,
+        0x44, 0x98, 0xad, 0xc1, 0x88, 0xed, 0xe4, 0xb4,
+        0xaf, 0xf5, 0x8c, 0x9b, 0x48, 0x4d, 0x56, 0x60,
+        0x97, 0x0f, 0x61, 0x59, 0x9e, 0xa6, 0x27, 0xfe,
+        0xc1, 0x91, 0x15, 0x38, 0xb8, 0x0f, 0xae, 0x61,
+        0x7d, 0x26, 0x13, 0x5a, 0x73, 0xff, 0x1c, 0xa3,
+        0x61, 0x04, 0x58, 0x48, 0x55, 0x44, 0x11, 0xfe,
+        0x15, 0xca, 0xc3, 0xbd, 0xca, 0xc5, 0xb4, 0x40,
+        0x5d, 0x1b, 0x7f, 0x39, 0xb5, 0x9c, 0x35, 0xec,
+        0x61, 0x15, 0x32, 0x32, 0xb8, 0x4e, 0x40, 0x9f,
+        0x17, 0x1f, 0x0a, 0x4d, 0xa9, 0x91, 0xef, 0xb7,
+        0xb0, 0xeb, 0xc2, 0x83, 0x9a, 0x6c, 0xd2, 0x79,
+        0x43, 0x78, 0x5e, 0x2f, 0xe5, 0xdd, 0x1a, 0x3c,
+        0x45, 0xab, 0x29, 0x40, 0x3a, 0x37, 0x5b, 0x6f,
+        0xd7, 0xfc, 0x48, 0x64, 0x3c, 0x49, 0xfb, 0x21,
+        0xbe, 0xc3, 0xff, 0x07, 0xfb, 0x17, 0xe9, 0xc9,
+        0x0c, 0x4c, 0x5c, 0x15, 0x9e, 0x8e, 0x22, 0x30,
+        0x0a, 0xde, 0x48, 0x7f, 0xdb, 0x0d, 0xd1, 0x2b,
+        0x87, 0x38, 0x9e, 0xcc, 0x5a, 0x01, 0x16, 0xee,
+        0x75, 0x49, 0x0d, 0x30, 0x01, 0x34, 0x6a, 0xb6,
+        0x9a, 0x5a, 0x2a, 0xec, 0xbb, 0x48, 0xac, 0xd3,
+        0x77, 0x83, 0xd8, 0x08, 0x86, 0x4f, 0x48, 0x09,
+        0x29, 0x41, 0x79, 0xa1, 0x03, 0x12, 0xc4, 0xcd,
+        0x90, 0x55, 0x47, 0x66, 0x74, 0x9a, 0xcc, 0x4f,
+        0x35, 0x8c, 0xd6, 0x98, 0xef, 0xeb, 0x45, 0xb9,
+        0x9a, 0x26, 0x2f, 0x39, 0xa5, 0x70, 0x6d, 0xfc,
+        0xb4, 0x51, 0xee, 0xf4, 0x9c, 0xe7, 0x38, 0x59,
+        0xad, 0xf4, 0xbc, 0x46, 0xff, 0x46, 0x8e, 0x60,
+        0x9c, 0xa3, 0x60, 0x1d, 0xf8, 0x26, 0x72, 0xf5,
+        0x72, 0x9d, 0x68, 0x80, 0x04, 0xf6, 0x0b, 0xa1,
+        0x0a, 0xd5, 0xa7, 0x82, 0x3a, 0x3e, 0x47, 0xa8,
+        0x5a, 0xde, 0x59, 0x4f, 0x7b, 0x07, 0xb3, 0xe9,
+        0x24, 0x19, 0x3d, 0x34, 0x05, 0xec, 0xf1, 0xab,
+        0x6e, 0x64, 0x8f, 0xd3, 0xe6, 0x41, 0x86, 0x80,
+        0x70, 0xe3, 0x8d, 0x60, 0x9c, 0x34, 0x25, 0x01,
+        0x07, 0x4d, 0x19, 0x41, 0x4e, 0x3d, 0x5c, 0x7e,
+        0xa8, 0xf5, 0xcc, 0xd5, 0x7b, 0xe2, 0x7d, 0x3d,
+        0x49, 0x86, 0x7d, 0x07, 0xb7, 0x10, 0xe3, 0x35,
+        0xb8, 0x84, 0x6d, 0x76, 0xab, 0x17, 0xc6, 0x38,
+        0xb4, 0xd3, 0x28, 0x57, 0xad, 0xd3, 0x88, 0x5a,
+        0xda, 0xea, 0xc8, 0x94, 0xcc, 0x37, 0x19, 0xac,
+        0x9c, 0x9f, 0x4b, 0x00, 0x15, 0xc0, 0xc8, 0xca,
+        0x1f, 0x15, 0xaa, 0xe0, 0xdb, 0xf9, 0x2f, 0x57,
+        0x1b, 0x24, 0xc7, 0x6f, 0x76, 0x29, 0xfb, 0xed,
+        0x25, 0x0d, 0xc0, 0xfe, 0xbd, 0x5a, 0xbf, 0x20,
+        0x08, 0x51, 0x05, 0xec, 0x71, 0xa3, 0xbf, 0xef,
+        0x5e, 0x99, 0x75, 0xdb, 0x3c, 0x5f, 0x9a, 0x8c,
+        0xbb, 0x19, 0x5c, 0x0e, 0x93, 0x19, 0xf8, 0x6a,
+        0xbc, 0xf2, 0x12, 0x54, 0x2f, 0xcb, 0x28, 0x64,
+        0x88, 0xb3, 0x92, 0x0d, 0x96, 0xd1, 0xa6, 0xe4,
+        0x1f, 0xf1, 0x4d, 0xa4, 0xab, 0x1c, 0xee, 0x54,
+        0xf2, 0xad, 0x29, 0x6d, 0x32, 0x37, 0xb2, 0x16,
+        0x77, 0x5c, 0xdc, 0x2e, 0x54, 0xec, 0x75, 0x26,
+        0xc6, 0x36, 0xd9, 0x17, 0x2c, 0xf1, 0x7a, 0xdc,
+        0x4b, 0xf1, 0xe2, 0xd9, 0x95, 0xba, 0xac, 0x87,
+        0xc1, 0xf3, 0x8e, 0x58, 0x08, 0xd8, 0x87, 0x60,
+        0xc9, 0xee, 0x6a, 0xde, 0xa4, 0xd2, 0xfc, 0x0d,
+        0xe5, 0x36, 0xc4, 0x5c, 0x52, 0xb3, 0x07, 0x54,
+        0x65, 0x24, 0xc1, 0xb1, 0xd1, 0xb1, 0x53, 0x13,
+        0x31, 0x79, 0x7f, 0x05, 0x76, 0xeb, 0x37, 0x59,
+        0x15, 0x2b, 0xd1, 0x3f, 0xac, 0x08, 0x97, 0xeb,
+        0x91, 0x98, 0xdf, 0x6c, 0x09, 0x0d, 0x04, 0x9f,
+        0xdc, 0x3b, 0x0e, 0x60, 0x68, 0x47, 0x23, 0x15,
+        0x16, 0xc6, 0x0b, 0x35, 0xf8, 0x77, 0xa2, 0x78,
+        0x50, 0xd4, 0x64, 0x22, 0x33, 0xff, 0xfb, 0x93,
+        0x71, 0x46, 0x50, 0x39, 0x1b, 0x9c, 0xea, 0x4e,
+        0x8d, 0x0c, 0x37, 0xe5, 0x5c, 0x51, 0x3a, 0x31,
+        0xb2, 0x85, 0x84, 0x3f, 0x41, 0xee, 0xa2, 0xc1,
+        0xc6, 0x13, 0x3b, 0x54, 0x28, 0xd2, 0x18, 0x37,
+        0xcc, 0x46, 0x9f, 0x6a, 0x91, 0x3d, 0x5a, 0x15,
+        0x3c, 0x89, 0xa3, 0x61, 0x06, 0x7d, 0x2e, 0x78,
+        0xbe, 0x7d, 0x40, 0xba, 0x2f, 0x95, 0xb1, 0x2f,
+        0x87, 0x3b, 0x8a, 0xbe, 0x6a, 0xf4, 0xc2, 0x31,
+        0x74, 0xee, 0x91, 0xe0, 0x23, 0xaa, 0x5d, 0x7f,
+        0xdd, 0xf0, 0x44, 0x8c, 0x0b, 0x59, 0x2b, 0xfc,
+        0x48, 0x3a, 0xdf, 0x07, 0x05, 0x38, 0x6c, 0xc9,
+        0xeb, 0x18, 0x24, 0x68, 0x8d, 0x58, 0x98, 0xd3,
+        0x31, 0xa3, 0xe4, 0x70, 0x59, 0xb1, 0x21, 0xbe,
+        0x7e, 0x65, 0x7d, 0xb8, 0x04, 0xab, 0xf6, 0xe4,
+        0xd7, 0xda, 0xec, 0x09, 0x8f, 0xda, 0x6d, 0x24,
+        0x07, 0xcc, 0x29, 0x17, 0x05, 0x78, 0x1a, 0xc1,
+        0xb1, 0xce, 0xfc, 0xaa, 0x2d, 0xe7, 0xcc, 0x85,
+        0x84, 0x84, 0x03, 0x2a, 0x0c, 0x3f, 0xa9, 0xf8,
+        0xfd, 0x84, 0x53, 0x59, 0x5c, 0xf0, 0xd4, 0x09,
+        0xf0, 0xd2, 0x6c, 0x32, 0x03, 0xb0, 0xa0, 0x8c,
+        0x52, 0xeb, 0x23, 0x91, 0x88, 0x43, 0x13, 0x46,
+        0xf6, 0x1e, 0xb4, 0x1b, 0xf5, 0x8e, 0x3a, 0xb5,
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+        0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32,
+        0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa,
+        0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45,
+        0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04,
+        0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33,
+        0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad,
+        0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4,
+        0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c,
+        0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b,
+        0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36,
+        0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa,
+        0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9,
+        0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28,
+        0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b,
+        0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03,
+        0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d,
+        0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff,
+        0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39,
+        0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b,
+        0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2,
+        0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34,
+        0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe,
+        0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0,
+        0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27,
+        0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86,
+        0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90,
+        0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03,
+        0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb,
+        0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57,
+        0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9,
+        0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5,
+        0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16,
+        0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5,
+        0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a,
+        0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d,
+        0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0,
+        0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f,
+        0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48,
+        0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1,
+        0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09,
+        0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51,
+        0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b,
+        0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf,
+        0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe,
+        0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad,
+        0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e,
+        0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57,
+        0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f,
+        0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef,
+        0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8,
+        0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69,
+        0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d,
+        0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59,
+        0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9,
+        0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d,
+        0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea,
+        0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56,
+        0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4,
+        0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8,
+        0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78,
+        0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f,
+        0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4,
+        0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91,
+        0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f,
+        0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c,
+        0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57,
+        0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4,
+        0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23,
+        0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17,
+        0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66,
+        0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39,
+        0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36,
+        0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00,
+        0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7,
+        0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60,
+        0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c,
+        0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e,
+        0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7,
+        0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a,
+        0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d,
+        0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37,
+        0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82,
+        0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8,
+        0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e,
+        0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85,
+        0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98,
+        0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22,
+        0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7,
+        0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49,
+        0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33,
+        0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc,
+        0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8,
+        0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f,
+        0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3,
+        0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98,
+        0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c,
+        0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6,
+        0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc,
+        0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d,
+};
+
+/* 100 test cases */
+static struct crc_test {
+        u32 crc;        /* random starting crc */
+        u32 start;      /* random 6 bit offset in buf */
+        u32 length;     /* random 11 bit length of test */
+        u32 crc_le;     /* expected crc32_le result */
+        u32 crc_be;     /* expected crc32_be result */
+} test[] =
 {
-        while (len--) {
-                unsigned char x = bitrev8(*buf);
-                *buf++ = x;
-        }
-}
-
-static void random_garbage(unsigned char *buf, size_t len)
+        {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1},
+        {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad},
+        {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f},
+        {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a},
+        {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2},
+        {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793},
+        {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed},
+        {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35},
+        {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2},
+        {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10},
+        {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb},
+        {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0},
+        {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb},
+        {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed},
+        {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591},
+        {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67},
+        {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd},
+        {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a},
+        {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b},
+        {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f},
+        {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d},
+        {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a},
+        {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97},
+        {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2},
+        {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138},
+        {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032},
+        {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f},
+        {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f},
+        {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32},
+        {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef},
+        {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0},
+        {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59},
+        {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4},
+        {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c},
+        {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51},
+        {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11},
+        {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659},
+        {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af},
+        {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99},
+        {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b},
+        {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521},
+        {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3},
+        {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d},
+        {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f},
+        {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b},
+        {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0},
+        {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195},
+        {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d},
+        {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4},
+        {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3},
+        {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643},
+        {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10},
+        {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d},
+        {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5},
+        {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b},
+        {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee},
+        {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14},
+        {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a},
+        {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b},
+        {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3},
+        {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826},
+        {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06},
+        {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35},
+        {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801},
+        {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2},
+        {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d},
+        {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c},
+        {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba},
+        {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5},
+        {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b},
+        {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178},
+        {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3},
+        {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605},
+        {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1},
+        {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9},
+        {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78},
+        {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9},
+        {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd},
+        {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab},
+        {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb},
+        {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77},
+        {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da},
+        {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39},
+        {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16},
+        {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208},
+        {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e},
+        {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5},
+        {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892},
+        {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db},
+        {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43},
+        {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac},
+        {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7},
+        {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2},
+        {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2},
+        {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640},
+        {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f},
+        {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99},
+        {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7},
+        {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499},
+        {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a},
+};
+
+#include <linux/time.h>
+
+static int __init crc32_init(void)
 {
-        while (len--)
-                *buf++ = (unsigned char) random();
-}
+        int i;
+        int errors = 0;
+        int bytes = 0;
+        struct timespec start, stop;
+        u64 nsec;
+        unsigned long flags;
 
-#if 0                           /* Not used at present */
-static void store_le(u32 x, unsigned char *buf)
-{
-        buf[0] = (unsigned char) x;
-        buf[1] = (unsigned char) (x >> 8);
-        buf[2] = (unsigned char) (x >> 16);
-        buf[3] = (unsigned char) (x >> 24);
-}
-#endif
+        /* keep static to prevent cache warming code from
+         * getting eliminated by the compiler */
+        static u32 crc;
 
-static void store_be(u32 x, unsigned char *buf)
-{
-        buf[0] = (unsigned char) (x >> 24);
-        buf[1] = (unsigned char) (x >> 16);
-        buf[2] = (unsigned char) (x >> 8);
-        buf[3] = (unsigned char) x;
-}
+        /* pre-warm the cache */
+        for (i = 0; i < 100; i++) {
+                bytes += 2*test[i].length;
 
-/*
- * This checks that CRC(buf + CRC(buf)) = 0, and that
- * CRC commutes with bit-reversal.  This has the side effect
- * of bytewise bit-reversing the input buffer, and returns
- * the CRC of the reversed buffer.
- */
-static u32 test_step(u32 init, unsigned char *buf, size_t len)
-{
-        u32 crc1, crc2;
-        size_t i;
-
-        crc1 = crc32_be(init, buf, len);
-        store_be(crc1, buf + len);
-        crc2 = crc32_be(init, buf, len + 4);
-        if (crc2)
-                printf("\nCRC cancellation fail: 0x%08x should be 0\n",
-                       crc2);
-
-        for (i = 0; i <= len + 4; i++) {
-                crc2 = crc32_be(init, buf, i);
-                crc2 = crc32_be(crc2, buf + i, len + 4 - i);
-                if (crc2)
-                        printf("\nCRC split fail: 0x%08x\n", crc2);
+                crc ^= crc32_le(test[i].crc, test_buf +
+                    test[i].start, test[i].length);
+
+                crc ^= crc32_be(test[i].crc, test_buf +
+                    test[i].start, test[i].length);
         }
 
-        /* Now swap it around for the other test */
-
-        bytereverse(buf, len + 4);
-        init = bitrev32(init);
-        crc2 = bitrev32(crc1);
-        if (crc1 != bitrev32(crc2))
-                printf("\nBit reversal fail: 0x%08x -> 0x%08x -> 0x%08x\n",
-                       crc1, crc2, bitrev32(crc2));
-        crc1 = crc32_le(init, buf, len);
-        if (crc1 != crc2)
-                printf("\nCRC endianness fail: 0x%08x != 0x%08x\n", crc1,
-                       crc2);
-        crc2 = crc32_le(init, buf, len + 4);
-        if (crc2)
-                printf("\nCRC cancellation fail: 0x%08x should be 0\n",
-                       crc2);
-
-        for (i = 0; i <= len + 4; i++) {
-                crc2 = crc32_le(init, buf, i);
-                crc2 = crc32_le(crc2, buf + i, len + 4 - i);
-                if (crc2)
-                        printf("\nCRC split fail: 0x%08x\n", crc2);
+        /* reduce OS noise */
+        local_irq_save(flags);
+        local_irq_disable();
+
+        getnstimeofday(&start);
+        for (i = 0; i < 100; i++) {
+                if (test[i].crc_le != crc32_le(test[i].crc, test_buf +
+                    test[i].start, test[i].length))
+                        errors++;
+
+                if (test[i].crc_be != crc32_be(test[i].crc, test_buf +
+                    test[i].start, test[i].length))
+                        errors++;
         }
+        getnstimeofday(&stop);
 
-        return crc1;
-}
+        local_irq_restore(flags);
+        local_irq_enable();
 
-#define SIZE 64
-#define INIT1 0
-#define INIT2 0
+        nsec = stop.tv_nsec - start.tv_nsec +
+                1000000000 * (stop.tv_sec - start.tv_sec);
 
-int main(void)
-{
-        unsigned char buf1[SIZE + 4];
-        unsigned char buf2[SIZE + 4];
-        unsigned char buf3[SIZE + 4];
-        int i, j;
-        u32 crc1, crc2, crc3;
-
-        for (i = 0; i <= SIZE; i++) {
-                printf("\rTesting length %d...", i);
-                fflush(stdout);
-                random_garbage(buf1, i);
-                random_garbage(buf2, i);
-                for (j = 0; j < i; j++)
-                        buf3[j] = buf1[j] ^ buf2[j];
-
-                crc1 = test_step(INIT1, buf1, i);
-                crc2 = test_step(INIT2, buf2, i);
-                /* Now check that CRC(buf1 ^ buf2) = CRC(buf1) ^ CRC(buf2) */
-                crc3 = test_step(INIT1 ^ INIT2, buf3, i);
-                if (crc3 != (crc1 ^ crc2))
-                        printf("CRC XOR fail: 0x%08x != 0x%08x ^ 0x%08x\n",
-                               crc3, crc1, crc2);
+        pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n",
+                 CRC_LE_BITS, CRC_BE_BITS);
+
+        if (errors)
+                pr_warn("crc32: %d self tests failed\n", errors);
+        else {
+                pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n",
+                        bytes, nsec);
         }
-        printf("\nAll test complete.  No failures expected.\n");
+
         return 0;
 }
 
-#endif                          /* UNITTEST */
+static void __exit crc32_exit(void)
+{
+}
+
+module_init(crc32_init);
+module_exit(crc32_exit);
+#endif /* CONFIG_CRC32_SELFTEST */