crypto: hisilicon/qm - move the barrier before writing to the mailbox register

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[ Upstream commit ebf35d8f93 ]

Before sending the data via the mailbox to the hardware, to ensure
that the data accessed by the hardware is the most up-to-date,
a write barrier should be added before writing to the mailbox register.
The current memory barrier is placed after writing to the register,
the barrier order should be modified to be before writing to the register.

Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Chenghai Huang 2026-01-17 18:18:03 +08:00 • committed by Sasha Levin

parent 76f7abd4ee

commit a321dd2b63

1 changed files with 5 additions and 1 deletions

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drivers/crypto/hisilicon/qm.c

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