linux-kernel - [PATCH v6 02/16] firmware: arm_scmi: Set polling timeout to max_rx_timeout

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Date:   Mon, 22 Nov 2021 23:06:26 +0000
From:   Cristian Marussi <cristian.marussi@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     sudeep.holla@....com, james.quinlan@...adcom.com,
        Jonathan.Cameron@...wei.com, f.fainelli@...il.com,
        vincent.guittot@...aro.org, souvik.chakravarty@....com,
        cristian.marussi@....com
Subject: [PATCH v6 02/16] firmware: arm_scmi: Set polling timeout to max_rx_timeout_ms

Use transport specific transmission timeout (max_rx_timeout_ms) also for
polling transactions.

Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
 drivers/firmware/arm_scmi/driver.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 3cf161f3bcc7..568562121f64 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -724,8 +724,6 @@ static void xfer_put(const struct scmi_protocol_handle *ph,
 	__scmi_xfer_put(&info->tx_minfo, xfer);
 }
 
-#define SCMI_MAX_POLL_TO_NS	(100 * NSEC_PER_USEC)
-
 static bool scmi_xfer_done_no_timeout(struct scmi_chan_info *cinfo,
 				      struct scmi_xfer *xfer, ktime_t stop)
 {
@@ -799,7 +797,8 @@ static int do_xfer(const struct scmi_protocol_handle *ph,
 	}
 
 	if (xfer->hdr.poll_completion) {
-		ktime_t stop = ktime_add_ns(ktime_get(), SCMI_MAX_POLL_TO_NS);
+		ktime_t stop = ktime_add_ms(ktime_get(),
+					    info->desc->max_rx_timeout_ms);
 
 		spin_until_cond(scmi_xfer_done_no_timeout(cinfo, xfer, stop));
 		if (ktime_before(ktime_get(), stop)) {
-- 
2.17.1