diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2021-05-24 23:16:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-27 15:49:39 +0300 |
| commit | 6f68dbd6cc7b440c91aea894e214a7065f5fbbb6 (patch) | |
| tree | 93bd0a60bebdfadb1e253c8eee0e0593b4a613db /drivers/misc/eeprom | |
| parent | 6601017e2a4936a93c7d9527cd25a4a2c16cc5ef (diff) | |
| download | linux-6f68dbd6cc7b440c91aea894e214a7065f5fbbb6.tar.xz | |
eeprom: ee1004: Improve error handling in ee1004_read
Simplify the error handling and make it better readable. No functional
change intended.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/13ad7b39-e722-d70a-e25b-03d1fb1734a7@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/eeprom')
| -rw-r--r-- | drivers/misc/eeprom/ee1004.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/misc/eeprom/ee1004.c b/drivers/misc/eeprom/ee1004.c index 33855e459a40..d18348ee4a57 100644 --- a/drivers/misc/eeprom/ee1004.c +++ b/drivers/misc/eeprom/ee1004.c @@ -119,7 +119,7 @@ static ssize_t eeprom_read(struct file *filp, struct kobject *kobj, { struct i2c_client *client = kobj_to_i2c_client(kobj); size_t requested = count; - int page; + int page, ret = 0; page = off >> EE1004_PAGE_SHIFT; if (unlikely(page > 1)) @@ -133,33 +133,28 @@ static ssize_t eeprom_read(struct file *filp, struct kobject *kobj, mutex_lock(&ee1004_bus_lock); while (count) { - int status; - /* Select page */ - status = ee1004_set_current_page(dev, page); - if (status) { - mutex_unlock(&ee1004_bus_lock); - return status; - } + ret = ee1004_set_current_page(dev, page); + if (ret) + goto out; - status = ee1004_eeprom_read(client, buf, off, count); - if (status < 0) { - mutex_unlock(&ee1004_bus_lock); - return status; - } - buf += status; - off += status; - count -= status; + ret = ee1004_eeprom_read(client, buf, off, count); + if (ret < 0) + goto out; + + buf += ret; + off += ret; + count -= ret; if (off == EE1004_PAGE_SIZE) { page++; off = 0; } } - +out: mutex_unlock(&ee1004_bus_lock); - return requested; + return ret < 0 ? ret : requested; } static BIN_ATTR_RO(eeprom, EE1004_EEPROM_SIZE); |