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crypto: qat - add delay before polling mailbox

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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>
This commit is contained in:
Giovanni Cabiddu
2020-07-30 13:27:42 +01:00
committed by Herbert Xu
parent 9123e3a74e
commit 9a5a668dc3
1 changed files with 4 additions and 3 deletions
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7
drivers/crypto/qat/qat_common/adf_admin.c
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@ -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); memcpy(admin->virt_addr + offset, in, ADF_ADMINMSG_LEN);
ADF_CSR_WR(mailbox, mb_offset, 1); ADF_CSR_WR(mailbox, mb_offset, 1);
ret = readl_poll_timeout(mailbox + mb_offset, status, ret = read_poll_timeout(ADF_CSR_RD, status, status == 0,
status == 0, ADF_ADMIN_POLL_DELAY_US, ADF_ADMIN_POLL_DELAY_US,
ADF_ADMIN_POLL_TIMEOUT_US); ADF_ADMIN_POLL_TIMEOUT_US, true,
mailbox, mb_offset);
if (ret < 0) { if (ret < 0) {
/* Response timeout */ /* Response timeout */
dev_err(&GET_DEV(accel_dev), dev_err(&GET_DEV(accel_dev),