linux-kernel - [PATCH 4/5] rtc: pcf2127: set regmap max

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Date:   Tue,  5 May 2020 22:13:09 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     linux-rtc@...r.kernel.org
Cc:     Rasmus Villemoes <rasmus.villemoes@...vas.dk>,
        Per Nørgaard Christensen 
        <per.christensen@...vas.dk>, linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH 4/5] rtc: pcf2127: set regmap max_register

Set regmap max_register to ease debugging and enforce the register range.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/rtc/rtc-pcf2127.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index 5ac996578523..039078029bd4 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -634,6 +634,7 @@ static int pcf2127_i2c_probe(struct i2c_client *client,
 	static const struct regmap_config config = {
 		.reg_bits = 8,
 		.val_bits = 8,
+		.max_register = 0x1d,
 	};
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
@@ -701,6 +702,7 @@ static int pcf2127_spi_probe(struct spi_device *spi)
 		.val_bits = 8,
 		.read_flag_mask = 0xa0,
 		.write_flag_mask = 0x20,
+		.max_register = 0x1d,
 	};
 	struct regmap *regmap;
 
-- 
2.26.2