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| author |   Giovanni Cabiddu <giovanni.cabiddu@intel.com> | 2020-07-30 13:27:42 +0100 |
|---|---|---|
| committer |   Herbert Xu <herbert@gondor.apana.org.au> | 2020-08-21 14:43:50 +1000 |
| commit | 9a5a668dc348f98de464114411421c4e9381cf21 (patch) | |
| tree | 1c6058a693b5fb3d4deae666d481f75b65b2dcb3 /drivers/crypto/qat | |
| parent | Linux 5.9-rc1 (diff) | |
| download | linux-dev-9a5a668dc348f98de464114411421c4e9381cf21.tar.xz linux-dev-9a5a668dc348f98de464114411421c4e9381cf21.zip | |
crypto: qat - add delay before polling mailbox
The mailbox CSR register has a write latency and requires a delay before
being read. This patch replaces readl_poll_timeout with read_poll_timeout
that allows to sleep before read.
The initial sleep was removed when the mailbox poll loop was replaced with
readl_poll_timeout.
Fixes: a79d471c6510 ("crypto: qat - update timeout logic in put admin msg")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/qat')
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_admin.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_admin.c b/drivers/crypto/qat/qat_common/adf_admin.c index 1c8ca151a963..ec9b390276d6 100644 --- a/drivers/crypto/qat/qat_common/adf_admin.c +++ b/drivers/crypto/qat/qat_common/adf_admin.c @@ -131,9 +131,10 @@ static int adf_put_admin_msg_sync(struct adf_accel_dev *accel_dev, u32 ae, memcpy(admin->virt_addr + offset, in, ADF_ADMINMSG_LEN); ADF_CSR_WR(mailbox, mb_offset, 1); - ret = readl_poll_timeout(mailbox + mb_offset, status, - status == 0, ADF_ADMIN_POLL_DELAY_US, - ADF_ADMIN_POLL_TIMEOUT_US); + ret = read_poll_timeout(ADF_CSR_RD, status, status == 0, + ADF_ADMIN_POLL_DELAY_US, + ADF_ADMIN_POLL_TIMEOUT_US, true, + mailbox, mb_offset); if (ret < 0) { /* Response timeout */ dev_err(&GET_DEV(accel_dev), |