* [PATCH] eeprom: ee1004: Check chip before probing
@ 2025-02-18 22:09 Eddie James
0 siblings, 0 replies; only message in thread
From: Eddie James @ 2025-02-18 22:09 UTC (permalink / raw)
To: linux-kernel; +Cc: arnd, gregkh, eajames
Like other eeprom drivers, check if the device is really there and
functional before probing.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
drivers/misc/eeprom/ee1004.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/misc/eeprom/ee1004.c b/drivers/misc/eeprom/ee1004.c
index 89224d4af4a20..e13f9fdd9d7b1 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);
--
2.43.5
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