[PATCH AUTOSEL 4.19 082/106] crypto: stm32/crc32 - fix run-time self test issue.
From: Sasha Levin <sashal@kernel.org>
Date: 2020-06-08 23:30:21
Also in:
linux-crypto, lkml, stable
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
From: Nicolas Toromanoff <redacted>
[ Upstream commit a8cc3128bf2c01c4d448fe17149e87132113b445 ]
Fix wrong crc32 initialisation value:
"alg: shash: stm32_crc32 test failed (wrong result) on test vector 0,
cfg="init+update+final aligned buffer"
cra_name="crc32c" expects an init value of 0XFFFFFFFF,
cra_name="crc32" expects an init value of 0.
Fixes: b51dbe90912a ("crypto: stm32 - Support for STM32 CRC32 crypto module")
Signed-off-by: Nicolas Toromanoff <redacted>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/crypto/stm32/stm32_crc32.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/stm32/stm32_crc32.c b/drivers/crypto/stm32/stm32_crc32.c
index 749b51762b18..c5ad83ad2f72 100644
--- a/drivers/crypto/stm32/stm32_crc32.c
+++ b/drivers/crypto/stm32/stm32_crc32.c@@ -28,10 +28,10 @@ /* Registers values */ #define CRC_CR_RESET BIT(0) -#define CRC_INIT_DEFAULT 0xFFFFFFFF #define CRC_CR_REV_IN_WORD (BIT(6) | BIT(5)) #define CRC_CR_REV_IN_BYTE BIT(5) #define CRC_CR_REV_OUT BIT(7) +#define CRC32C_INIT_DEFAULT 0xFFFFFFFF #define CRC_AUTOSUSPEND_DELAY 50
@@ -65,7 +65,7 @@ static int stm32_crc32_cra_init(struct crypto_tfm *tfm) { struct stm32_crc_ctx *mctx = crypto_tfm_ctx(tfm); - mctx->key = CRC_INIT_DEFAULT; + mctx->key = 0; mctx->poly = CRC32_POLY_LE; return 0; }
@@ -74,7 +74,7 @@ static int stm32_crc32c_cra_init(struct crypto_tfm *tfm) { struct stm32_crc_ctx *mctx = crypto_tfm_ctx(tfm); - mctx->key = CRC_INIT_DEFAULT; + mctx->key = CRC32C_INIT_DEFAULT; mctx->poly = CRC32C_POLY_LE; return 0; }
--
2.25.1
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