linux-kernel - [PATCH 1/2] rtc: k3: wait until the unlock field is not zero

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Date:   Tue, 16 Aug 2022 12:33:11 -0500
From:   Bryan Brattlof <bb@...com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
CC:     Linux RTC <linux-rtc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Nishanth Menon <nm@...com>, Bryan Brattlof <bb@...com>
Subject: [PATCH 1/2] rtc: k3: wait until the unlock field is not zero

After writing the magic words to the KICK0 and KICK1 registers, we must
wait for a 1 in the unlock field of the general control register to
signify when the rtc device is in an unlocked state.

Signed-off-by: Bryan Brattlof <bb@...com>
---
 drivers/rtc/rtc-ti-k3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-ti-k3.c b/drivers/rtc/rtc-ti-k3.c
index 7a0f181d3fefe..fd26be7868d25 100644
--- a/drivers/rtc/rtc-ti-k3.c
+++ b/drivers/rtc/rtc-ti-k3.c
@@ -190,7 +190,7 @@ static int k3rtc_unlock_rtc(struct ti_k3_rtc *priv)
 
 	/* Skip fence since we are going to check the unlock bit as fence */
 	ret = regmap_field_read_poll_timeout(priv->r_fields[K3RTC_UNLOCK], ret,
-					     !ret, 2, priv->sync_timeout_us);
+					     ret, 2, priv->sync_timeout_us);
 
 	return ret;
 }
-- 
2.17.1