Re: [PATCH v1 05/17] misc: ds1682: Change nvmem reg_read/write return type

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On 6/5/24 10:59, Joy Chakraborty wrote:
Change nvmem read/write function definition return type to ssize_t.

Signed-off-by: Joy Chakraborty <joychakr@xxxxxxxxxx>
---
  drivers/misc/ds1682.c | 16 ++++++----------
  1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/misc/ds1682.c b/drivers/misc/ds1682.c
index 5f8dcd0e3848..953341666ddb 100644
--- a/drivers/misc/ds1682.c
+++ b/drivers/misc/ds1682.c
@@ -198,26 +198,22 @@ static const struct bin_attribute ds1682_eeprom_attr = {
  	.write = ds1682_eeprom_write,
  };
-static int ds1682_nvmem_read(void *priv, unsigned int offset, void *val,
-			     size_t bytes)
+static ssize_t ds1682_nvmem_read(void *priv, unsigned int offset, void *val,
+				 size_t bytes)
  {
  	struct i2c_client *client = priv;
-	int ret;
- ret = i2c_smbus_read_i2c_block_data(client, DS1682_REG_EEPROM + offset,
+	return i2c_smbus_read_i2c_block_data(client, DS1682_REG_EEPROM + offset,
  					    bytes, val);
-	return ret < 0 ? ret : 0;
  }
-static int ds1682_nvmem_write(void *priv, unsigned int offset, void *val,
-			      size_t bytes)
+static ssize_t ds1682_nvmem_write(void *priv, unsigned int offset, void *val,
+				  size_t bytes)
  {
  	struct i2c_client *client = priv;
-	int ret;
- ret = i2c_smbus_write_i2c_block_data(client, DS1682_REG_EEPROM + offset,
+	return i2c_smbus_write_i2c_block_data(client, DS1682_REG_EEPROM + offset,
  					     bytes, val);

i2c_smbus_write_i2c_block_data() does not return the number of bytes written.
It returns either 0 or an error code.

Guenter





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