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crypto: remove CRYPTO_TFM_RES_BAD_BLOCK_LEN

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The flag CRYPTO_TFM_RES_BAD_BLOCK_LEN is never checked for, and it's
only set by one driver.  And even that single driver's use is wrong
because the driver is setting the flag from ->encrypt() and ->decrypt()
with no locking, which is unsafe because ->encrypt() and ->decrypt() can
be executed by many threads in parallel on the same tfm.

Just remove this flag.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2019-12-30 21:19:35 -06:00 • committed by Herbert Xu
parent f9d89b853e
commit 5c925e8b10
3 changed files with 0 additions and 3 deletions
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1
include/linux/crypto.h
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@ -114,7 +114,6 @@
#define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
#define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
#define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
#define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
/*
* Miscellaneous stuff.