From: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx>
commit cefc479cbb50399dec0c8e996f3539c48a1ee9dd upstream.
i2c-atr catches the BUS_NOTIFY_DEL_DEVICE event on the bus and removes
the translation by calling i2c_atr_detach_client().
However, BUS_NOTIFY_DEL_DEVICE happens when the device is about to be
removed from this bus, i.e. before removal, and thus before calling
.remove() on the driver. If the driver happens to do any i2c
transactions in its remove(), they will fail.
Fix this by catching BUS_NOTIFY_REMOVED_DEVICE instead, thus removing
the translation only after the device is actually removed.
Fixes: a076a860acae ("media: i2c: add I2C Address Translator (ATR) support")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx>
Reviewed-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>
Reviewed-by: Romain Gantois <romain.gantois@xxxxxxxxxxx>
Tested-by: Romain Gantois <romain.gantois@xxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/i2c-atr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/i2c/i2c-atr.c
+++ b/drivers/i2c/i2c-atr.c
@@ -412,7 +412,7 @@ static int i2c_atr_bus_notifier_call(str
dev_name(dev), ret);
break;
- case BUS_NOTIFY_DEL_DEVICE:
+ case BUS_NOTIFY_REMOVED_DEVICE:
i2c_atr_detach_client(client->adapter, client);
break;
Patches currently in stable-queue which might be from tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx are
queue-6.6/i2c-atr-fix-client-detach.patch
