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| author |   Nicolas Toromanoff <nicolas.toromanoff@st.com> | 2020-09-16 08:33:44 +0200 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2020-09-25 17:48:14 +1000 |
| commit | bbf2cb1ea1e1428589d7f4d652bed15b265ce92d (patch) | |
| tree | cec14bb4328b0a7f435453ad1a9cfdb515a0af98 /drivers/crypto/stm32/Kconfig | |
| parent | crypto: qat - remove unnecessary mutex_init() (diff) | |
| download | linux-dev-bbf2cb1ea1e1428589d7f4d652bed15b265ce92d.tar.xz linux-dev-bbf2cb1ea1e1428589d7f4d652bed15b265ce92d.zip | |
crypto: stm32/crc32 - Avoid lock if hardware is already used
If STM32 CRC device is already in use, calculate CRC by software.
This will release CPU constraint for a concurrent access to the
hardware, and avoid masking irqs during the whole block processing.
Fixes: 7795c0baf5ac ("crypto: stm32/crc32 - protect from concurrent accesses")
Signed-off-by: Nicolas Toromanoff <nicolas.toromanoff@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/stm32/Kconfig')
| -rw-r--r-- | drivers/crypto/stm32/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/crypto/stm32/Kconfig b/drivers/crypto/stm32/Kconfig index 4ef3eb11361c..4a4c3284ae1f 100644 --- a/drivers/crypto/stm32/Kconfig +++ b/drivers/crypto/stm32/Kconfig @@ -3,6 +3,7 @@ config CRYPTO_DEV_STM32_CRC tristate "Support for STM32 crc accelerators" depends on ARCH_STM32 select CRYPTO_HASH + select CRC32 help This enables support for the CRC32 hw accelerator which can be found on STMicroelectronics STM32 SOC. |