On vendredi 22 novembre 2024 13:26:18 heure normale d’Europe centrale Tomi Valkeinen wrote:
From: Tomi Valkeinen tomi.valkeinen+renesas@ideasonboard.com
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@vger.kernel.org Signed-off-by: Tomi Valkeinen tomi.valkeinen+renesas@ideasonboard.com
drivers/i2c/i2c-atr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-atr.c b/drivers/i2c/i2c-atr.c index f21475ae5921..0d54d0b5e327 100644 --- a/drivers/i2c/i2c-atr.c +++ b/drivers/i2c/i2c-atr.c @@ -412,7 +412,7 @@ static int i2c_atr_bus_notifier_call(struct notifier_block *nb, dev_name(dev), ret); break;
- case BUS_NOTIFY_DEL_DEVICE:
- case BUS_NOTIFY_REMOVED_DEVICE: i2c_atr_detach_client(client->adapter, client); break;
LGTM, tested on a TI FPC202 ATR.
Reviewed-by: Romain Gantois romain.gantois@bootlin.com Tested-by: Romain Gantois romain.gantois@bootlin.com