crypto: crct10dif - Add fallback for broken initrds

[~andy/linux] / crypto / crct10dif_common.c

diff --git a/crypto/crct10dif.c b/crypto/crct10dif_common.c
similarity index 63%
rename from crypto/crct10dif.c
rename to crypto/crct10dif_common.c
index 92aca96d6b98bd4a57ae6e3e5d383731f0d7d70e..b2fab366f518bc8689f83efcacb555f556fb376f 100644 (file)
--- a/crypto/crct10dif.c
+++ b/crypto/crct10dif_common.c
@@ -24,18 +24,10 @@
  *
  */
 
-#include <linux/types.h>
-#include <linux/module.h>
 #include <linux/crc-t10dif.h>
-#include <crypto/internal/hash.h>
-#include <linux/init.h>
-#include <linux/string.h>
+#include <linux/module.h>
 #include <linux/kernel.h>
 
-struct chksum_desc_ctx {
-       __u16 crc;
-};
-
 /* Table generated using the following polynomium:
  * x^16 + x^15 + x^11 + x^9 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
  * gt: 0x8bb7
@@ -86,93 +78,5 @@ __u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, size_t len)
 }
 EXPORT_SYMBOL(crc_t10dif_generic);
 
-/*
- * Steps through buffer one byte at at time, calculates reflected
- * crc using table.
- */
-
-static int chksum_init(struct shash_desc *desc)
-{
-       struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-       ctx->crc = 0;
-
-       return 0;
-}
-
-static int chksum_update(struct shash_desc *desc, const u8 *data,
-                        unsigned int length)
-{
-       struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-       ctx->crc = crc_t10dif_generic(ctx->crc, data, length);
-       return 0;
-}
-
-static int chksum_final(struct shash_desc *desc, u8 *out)
-{
-       struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-       *(__u16 *)out = ctx->crc;
-       return 0;
-}
-
-static int __chksum_finup(__u16 *crcp, const u8 *data, unsigned int len,
-                       u8 *out)
-{
-       *(__u16 *)out = crc_t10dif_generic(*crcp, data, len);
-       return 0;
-}
-
-static int chksum_finup(struct shash_desc *desc, const u8 *data,
-                       unsigned int len, u8 *out)
-{
-       struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-       return __chksum_finup(&ctx->crc, data, len, out);
-}
-
-static int chksum_digest(struct shash_desc *desc, const u8 *data,
-                        unsigned int length, u8 *out)
-{
-       struct chksum_desc_ctx *ctx = shash_desc_ctx(desc);
-
-       return __chksum_finup(&ctx->crc, data, length, out);
-}
-
-static struct shash_alg alg = {
-       .digestsize             =       CRC_T10DIF_DIGEST_SIZE,
-       .init           =       chksum_init,
-       .update         =       chksum_update,
-       .final          =       chksum_final,
-       .finup          =       chksum_finup,
-       .digest         =       chksum_digest,
-       .descsize               =       sizeof(struct chksum_desc_ctx),
-       .base                   =       {
-               .cra_name               =       "crct10dif",
-               .cra_driver_name        =       "crct10dif-generic",
-               .cra_priority           =       100,
-               .cra_blocksize          =       CRC_T10DIF_BLOCK_SIZE,
-               .cra_module             =       THIS_MODULE,
-       }
-};
-
-static int __init crct10dif_mod_init(void)
-{
-       int ret;
-
-       ret = crypto_register_shash(&alg);
-       return ret;
-}
-
-static void __exit crct10dif_mod_fini(void)
-{
-       crypto_unregister_shash(&alg);
-}
-
-module_init(crct10dif_mod_init);
-module_exit(crct10dif_mod_fini);
-
-MODULE_AUTHOR("Tim Chen <tim.c.chen@linux.intel.com>");
-MODULE_DESCRIPTION("T10 DIF CRC calculation.");
+MODULE_DESCRIPTION("T10 DIF CRC calculation common code");
 MODULE_LICENSE("GPL");