power: ds2780_battery: clean up eeprom read/write functions

The change removes redundant sysfs binary file boundary checks while
reading or writing "param_eeprom" or "user_eeprom", the checks are not
needed, since this task is done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

1 files changed, 2 insertions, 18 deletions

diff --git a/drivers/power/ds2780_battery.c b/drivers/power/ds2780_battery.c
index a7a0427343f3..d3743d0ad55b 100644
--- a/drivers/power/ds2780_battery.c
+++ b/drivers/power/ds2780_battery.c
@@ -637,10 +637,6 @@ static ssize_t ds2780_read_param_eeprom_bin(struct file *filp,
         struct power_supply *psy = to_power_supply(dev);
         struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
 
-        count = min_t(loff_t, count,
-                DS2780_EEPROM_BLOCK1_END -
-                DS2780_EEPROM_BLOCK1_START + 1 - off);
-
         return ds2780_read_block(dev_info, buf,
                                 DS2780_EEPROM_BLOCK1_START + off, count);
 }
@@ -655,10 +651,6 @@ static ssize_t ds2780_write_param_eeprom_bin(struct file *filp,
         struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
         int ret;
 
-        count = min_t(loff_t, count,
-                DS2780_EEPROM_BLOCK1_END -
-                DS2780_EEPROM_BLOCK1_START + 1 - off);
-
         ret = ds2780_write(dev_info, buf,
                                 DS2780_EEPROM_BLOCK1_START + off, count);
         if (ret < 0)
@@ -676,7 +668,7 @@ static struct bin_attribute ds2780_param_eeprom_bin_attr = {
                 .name = "param_eeprom",
                 .mode = S_IRUGO | S_IWUSR,
         },
-        .size = DS2780_EEPROM_BLOCK1_END - DS2780_EEPROM_BLOCK1_START + 1,
+        .size = DS2780_PARAM_EEPROM_SIZE,
         .read = ds2780_read_param_eeprom_bin,
         .write = ds2780_write_param_eeprom_bin,
 };
@@ -690,10 +682,6 @@ static ssize_t ds2780_read_user_eeprom_bin(struct file *filp,
         struct power_supply *psy = to_power_supply(dev);
         struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
 
-        count = min_t(loff_t, count,
-                DS2780_EEPROM_BLOCK0_END -
-                DS2780_EEPROM_BLOCK0_START + 1 - off);
-
         return ds2780_read_block(dev_info, buf,
                                 DS2780_EEPROM_BLOCK0_START + off, count);
 }
@@ -708,10 +696,6 @@ static ssize_t ds2780_write_user_eeprom_bin(struct file *filp,
         struct ds2780_device_info *dev_info = to_ds2780_device_info(psy);
         int ret;
 
-        count = min_t(loff_t, count,
-                DS2780_EEPROM_BLOCK0_END -
-                DS2780_EEPROM_BLOCK0_START + 1 - off);
-
         ret = ds2780_write(dev_info, buf,
                                 DS2780_EEPROM_BLOCK0_START + off, count);
         if (ret < 0)
@@ -729,7 +713,7 @@ static struct bin_attribute ds2780_user_eeprom_bin_attr = {
                 .name = "user_eeprom",
                 .mode = S_IRUGO | S_IWUSR,
         },
-        .size = DS2780_EEPROM_BLOCK0_END - DS2780_EEPROM_BLOCK0_START + 1,
+        .size = DS2780_USER_EEPROM_SIZE,
         .read = ds2780_read_user_eeprom_bin,
         .write = ds2780_write_user_eeprom_bin,
 };