Commit 9a5a668d authored Jul 30, 2020 by Giovanni Cabiddu Committed by Herbert Xu Aug 21, 2020

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: a79d471c ("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>

parent 9123e3a7

drivers/crypto/qat/qat_common/adf_admin.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -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),

Admin message