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Date: Wed,  5 Jun 2024 17:59:52 +0000
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Subject: [PATCH v1 08/17] misc: eeprom: 93xx46: 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/eeprom_93xx46.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/eeprom/eeprom_93xx46.c b/drivers/misc/eeprom/eeprom_93xx46.c
index 45c8ae0db8f9..5d618a13fe5a 100644
--- a/drivers/misc/eeprom/eeprom_93xx46.c
+++ b/drivers/misc/eeprom/eeprom_93xx46.c
@@ -79,10 +79,11 @@ static inline bool has_quirk_extra_read_cycle(struct eeprom_93xx46_dev *edev)
 	return edev->pdata->quirks & EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE;
 }
 
-static int eeprom_93xx46_read(void *priv, unsigned int off,
-			      void *val, size_t count)
+static ssize_t eeprom_93xx46_read(void *priv, unsigned int off,
+				  void *val, size_t count)
 {
 	struct eeprom_93xx46_dev *edev = priv;
+	size_t bytes_read = count;
 	char *buf = val;
 	int err = 0;
 	int bits;
@@ -158,7 +159,7 @@ static int eeprom_93xx46_read(void *priv, unsigned int off,
 
 	mutex_unlock(&edev->lock);
 
-	return err;
+	return err < 0 ? err : bytes_read;
 }
 
 static int eeprom_93xx46_ew(struct eeprom_93xx46_dev *edev, int is_on)
@@ -258,12 +259,13 @@ eeprom_93xx46_write_word(struct eeprom_93xx46_dev *edev,
 	return ret;
 }
 
-static int eeprom_93xx46_write(void *priv, unsigned int off,
+static ssize_t eeprom_93xx46_write(void *priv, unsigned int off,
 				   void *val, size_t count)
 {
 	struct eeprom_93xx46_dev *edev = priv;
 	char *buf = val;
 	int i, ret, step = 1;
+	size_t bytes_written = count;
 
 	if (unlikely(off >= edev->size))
 		return -EFBIG;
@@ -304,7 +306,7 @@ static int eeprom_93xx46_write(void *priv, unsigned int off,
 
 	/* erase/write disable */
 	eeprom_93xx46_ew(edev, 0);
-	return ret;
+	return ret < 0 ? ret : bytes_written;
 }
 
 static int eeprom_93xx46_eral(struct eeprom_93xx46_dev *edev)
-- 
2.45.1.467.gbab1589fc0-goog