linux-kernel - [PATCH] mfd: rn5t618: Fix caching of battery related registers

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Date:   Fri, 17 Jul 2020 23:00:02 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     lee.jones@...aro.org, linux-kernel@...r.kernel.org, phh@....me,
        stefan@...er.ch, b.galvani@...il.com
Cc:     Andreas Kemnade <andreas@...nade.info>
Subject: [PATCH] mfd: rn5t618: Fix caching of battery related registers

Battery status changes dynamically, so the corresponding registers
need to be considered volatile. Affected registers are:
- fuel gauge
- battery status
- battery interrupt

Signed-off-by: Andreas Kemnade <andreas@...nade.info>
---
 drivers/mfd/rn5t618.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
index 232de50562f9..55c47e555dd8 100644
--- a/drivers/mfd/rn5t618.c
+++ b/drivers/mfd/rn5t618.c
@@ -44,6 +44,9 @@ static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
 	case RN5T618_INTMON:
 	case RN5T618_RTC_CTRL1 ... RN5T618_RTC_CTRL2:
 	case RN5T618_RTC_SECONDS ... RN5T618_RTC_YEAR:
+	case RN5T618_CHGSTATE:
+	case RN5T618_CHGCTRL_IRR ... RN5T618_CHGERR_MONI:
+	case RN5T618_CONTROL ... RN5T618_CC_AVEREG0:
 		return true;
 	default:
 		return false;
-- 
2.20.1