linux-kernel - [PATCH v1 07/17] misc: eeprom: at25: Change nvmem reg

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Message-ID: <20240605175953.2613260-8-joychakr@google.com>
Date: Wed,  5 Jun 2024 17:59:51 +0000
From: Joy Chakraborty <joychakr@...gle.com>
To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
	Lars-Peter Clausen <lars@...afoo.de>, Sakari Ailus <sakari.ailus@...ux.intel.com>, 
	Bingbu Cao <bingbu.cao@...el.com>, Zhihao Cheng <chengzhihao1@...wei.com>, 
	Jerome Brunet <jbrunet@...libre.com>, 
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-iio@...r.kernel.org, linux-media@...r.kernel.org, 
	linux-i2c@...r.kernel.org, linux-gpio@...r.kernel.org, 
	linux-mtd@...ts.infradead.org, linux-rtc@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org, 
	linux-sunxi@...ts.linux.dev, linux-tegra@...r.kernel.org, 
	linux-usb@...r.kernel.org, manugautam@...gle.com, 
	Joy Chakraborty <joychakr@...gle.com>
Subject: [PATCH v1 07/17] misc: eeprom: at25: Change nvmem reg_read/write
 return type

Change nvmem read/write function definition return type to ssize_t.

Signed-off-by: Joy Chakraborty <joychakr@...gle.com>
---
 drivers/misc/eeprom/at25.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index 595ceb9a7126..73d60f80aea8 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -74,8 +74,8 @@ struct at25_data {
 
 #define	io_limit	PAGE_SIZE	/* bytes */
 
-static int at25_ee_read(void *priv, unsigned int offset,
-			void *val, size_t count)
+static ssize_t at25_ee_read(void *priv, unsigned int offset,
+			    void *val, size_t count)
 {
 	struct at25_data *at25 = priv;
 	char *buf = val;
@@ -147,7 +147,7 @@ static int at25_ee_read(void *priv, unsigned int offset,
 
 	dev_dbg(&at25->spi->dev, "read %zu bytes at %d\n",
 		count, offset);
-	return 0;
+	return count;
 }
 
 /* Read extra registers as ID or serial number */
@@ -195,10 +195,11 @@ static struct attribute *sernum_attrs[] = {
 };
 ATTRIBUTE_GROUPS(sernum);
 
-static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
+static ssize_t at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
 {
 	struct at25_data *at25 = priv;
 	size_t maxsz = spi_max_transfer_size(at25->spi);
+	size_t bytes_written = count;
 	const char *buf = val;
 	int			status = 0;
 	unsigned		buf_size;
@@ -313,7 +314,7 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
 	mutex_unlock(&at25->lock);
 
 	kfree(bounce);
-	return status;
+	return status < 0 ? status : bytes_written;
 }
 
 /*-------------------------------------------------------------------------*/
-- 
2.45.1.467.gbab1589fc0-goog