i2c: slave eeprom: clean up sysfs bin attribute read()/write()

The change removes redundant sysfs binary file boundary checks,
since this task is already done on caller side in fs/sysfs/file.c

Note, on file size overflow read() now returns 0, and this is a
correct and expected EOF notification according to POSIX.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Vladimir Zapolskiy 2015-07-27 00:16:31 +03:00 committed by Wolfram Sang
parent bc0195aad0
commit 1f023297f7

View File

@ -80,9 +80,6 @@ static ssize_t i2c_slave_eeprom_bin_read(struct file *filp, struct kobject *kobj
struct eeprom_data *eeprom; struct eeprom_data *eeprom;
unsigned long flags; unsigned long flags;
if (off + count > attr->size)
return -EFBIG;
eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj)); eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj));
spin_lock_irqsave(&eeprom->buffer_lock, flags); spin_lock_irqsave(&eeprom->buffer_lock, flags);
@ -98,9 +95,6 @@ static ssize_t i2c_slave_eeprom_bin_write(struct file *filp, struct kobject *kob
struct eeprom_data *eeprom; struct eeprom_data *eeprom;
unsigned long flags; unsigned long flags;
if (off + count > attr->size)
return -EFBIG;
eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj)); eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj));
spin_lock_irqsave(&eeprom->buffer_lock, flags); spin_lock_irqsave(&eeprom->buffer_lock, flags);