linux-kernel - [PATCH 14/21] eeprom: at24: provide and use at24_base_client

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Message-Id: <20180319091721.18193-15-brgl@bgdev.pl>
Date:   Mon, 19 Mar 2018 10:17:14 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH 14/21] eeprom: at24: provide and use at24_base_client_dev()

Use a helper function for accessing the device struct of the base
i2c client. This routine is named in a way that reflects its purpose
unlike the previously hand-coded dereferencing.

Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
---
 drivers/misc/eeprom/at24.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index ea5e81cb8e8c..02b710919b8b 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -260,6 +260,11 @@ static struct at24_client *at24_translate_offset(struct at24_data *at24,
 	return &at24->client[i];
 }
 
+static struct device *at24_base_client_dev(struct at24_data *at24)
+{
+	return &at24->client[0].client->dev;
+}
+
 static size_t at24_adjust_read_count(struct at24_data *at24,
 				      unsigned int offset, size_t count)
 {
@@ -371,7 +376,7 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count)
 	int ret;
 
 	at24 = priv;
-	dev = &at24->client[0].client->dev;
+	dev = at24_base_client_dev(at24);
 
 	if (unlikely(!count))
 		return count;
@@ -418,7 +423,7 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count)
 	int ret;
 
 	at24 = priv;
-	dev = &at24->client[0].client->dev;
+	dev = at24_base_client_dev(at24);
 
 	if (unlikely(!count))
 		return -EINVAL;
-- 
2.16.1