diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/eeprom/at24.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 3a53efc28821..ab1ad41786d1 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -517,6 +517,11 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id) if (!is_power_of_2(chip.byte_len)) dev_warn(&client->dev, "byte_len looks suspicious (no power of 2)!\n"); + if (!chip.page_size) { + dev_err(&client->dev, "page_size must not be 0!\n"); + err = -EINVAL; + goto err_out; + } if (!is_power_of_2(chip.page_size)) dev_warn(&client->dev, "page_size looks suspicious (no power of 2)!\n"); @@ -681,6 +686,11 @@ static struct i2c_driver at24_driver = { static int __init at24_init(void) { + if (!io_limit) { + pr_err("at24: io_limit must not be 0!\n"); + return -EINVAL; + } + io_limit = rounddown_pow_of_two(io_limit); return i2c_add_driver(&at24_driver); } |