* [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
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2025-02-18 22:10 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-02-18 22:09 [PATCH] eeprom: ee1004: Check chip before probing Eddie James
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.