diff options
| author | Eddie James <eajames@linux.ibm.com> | 2025-02-18 16:09:59 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:43 +0200 |
| commit | d85004266a32c69fb72243983bac9818c7998b01 (patch) | |
| tree | 21e2f4e09aadcdb295346849e9f57265a2885d46 | |
| parent | 011a62d2d79ac5a1a14a1cc9d2f62490d25451b5 (diff) | |
eeprom: ee1004: Check chip before probing
[ Upstream commit d9406677428e9234ea62bb2d2f5e996d1b777760 ]
Like other eeprom drivers, check if the device is really there and
functional before probing.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20250218220959.721698-1-eajames@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/misc/eeprom/ee1004.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/misc/eeprom/ee1004.c b/drivers/misc/eeprom/ee1004.c index 89224d4af4a2..e13f9fdd9d7b 100644 --- a/drivers/misc/eeprom/ee1004.c +++ b/drivers/misc/eeprom/ee1004.c @@ -304,6 +304,10 @@ static int ee1004_probe(struct i2c_client *client) I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_READ_BYTE_DATA)) return -EPFNOSUPPORT; + err = i2c_smbus_read_byte(client); + if (err < 0) + return -ENODEV; + mutex_lock(&ee1004_bus_lock); err = ee1004_init_bus_data(client); |