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Date:   Wed, 30 Dec 2020 15:59:11 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Henning Schild <henning.schild@...mens.com>,
        Claudius Heine <ch@...x.de>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] rtc: rx6110: fix build against modular I2C

From: Arnd Bergmann <arnd@...db.de>

With CONFIG_I2C=m, the #ifdef section is disabled, as shown
by this warning:

drivers/rtc/rtc-rx6110.c:314:12: error: unused function 'rx6110_probe' [-Werror,-Wunused-function]

Change the driver to use IS_ENABLED() instead, which works
for both module and built-in subsystems.

Fixes: afa819c2c6bf ("rtc: rx6110: add i2c support")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/rtc/rtc-rx6110.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/rtc/rtc-rx6110.c b/drivers/rtc/rtc-rx6110.c
index a7b671a21022..79161d4c6ce4 100644
--- a/drivers/rtc/rtc-rx6110.c
+++ b/drivers/rtc/rtc-rx6110.c
@@ -331,7 +331,7 @@ static int rx6110_probe(struct rx6110_data *rx6110, struct device *dev)
 	return 0;
 }
 
-#ifdef CONFIG_SPI_MASTER
+#if IS_ENABLED(CONFIG_SPI_MASTER)
 static struct regmap_config regmap_spi_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -411,7 +411,7 @@ static void rx6110_spi_unregister(void)
 }
 #endif /* CONFIG_SPI_MASTER */
 
-#ifdef CONFIG_I2C
+#if IS_ENABLED(CONFIG_I2C)
 static struct regmap_config regmap_i2c_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-- 
2.29.2

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