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Date: Wed,  5 Jun 2024 17:59:51 +0000
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Subject: [PATCH v1 07/17] misc: eeprom: at25: Change nvmem reg_read/write
 return type
From: Joy Chakraborty <joychakr@google.com>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>, 
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, 
	Lars-Peter Clausen <lars@metafoo.de>, Sakari Ailus <sakari.ailus@linux.intel.com>, 
	Bingbu Cao <bingbu.cao@intel.com>, Zhihao Cheng <chengzhihao1@huawei.com>, 
	Jerome Brunet <jbrunet@baylibre.com>, 
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, 
	linux-iio@vger.kernel.org, linux-media@vger.kernel.org, 
	linux-i2c@vger.kernel.org, linux-gpio@vger.kernel.org, 
	linux-mtd@lists.infradead.org, linux-rtc@vger.kernel.org, 
	linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, 
	linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, 
	linux-usb@vger.kernel.org, manugautam@google.com, 
	Joy Chakraborty <joychakr@google.com>
Content-Type: text/plain; charset="UTF-8"

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

Signed-off-by: Joy Chakraborty <joychakr@google.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