i2c: core: add useful info when defer probe

Add an useful info when failed to get irq/wakeirq due to -EPROBE_DEFER.

Before:
[   15.737361] i2c 2-0050: deferred probe pending: (reason unknown)

After:
[   15.816295] i2c 2-0050: deferred probe pending: tcpci: can't get irq

Signed-off-by: Xu Yang <[email protected]>
Reviewed-by: Carlos Song <[email protected]>
Reviewed-by: Frank Li <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>

Author: Xu Yang

drivers/i2c/i2c-core-base.c

@@ -520,7 +520,7 @@ static int i2c_device_probe(struct device *dev)
 				client->flags |= I2C_CLIENT_WAKE;
 		}
 		if (irq == -EPROBE_DEFER) {
-			status = irq;
+			status = dev_err_probe(dev, irq, "can't get irq\n");
 			goto put_sync_adapter;
 		}
 
@@ -548,7 +548,7 @@ static int i2c_device_probe(struct device *dev)
 
 		wakeirq = fwnode_irq_get_byname(fwnode, "wakeup");
 		if (wakeirq == -EPROBE_DEFER) {
-			status = wakeirq;
+			status = dev_err_probe(dev, wakeirq, "can't get wakeirq\n");
 			goto put_sync_adapter;
 		}