devm_gpiochip_add_data() calls the gpio_chip->get_direction handler
for each line, resulting in device I/O in mcp_gpio_get_direction().
However unless hid_device_io_start() is called, mcp2221_raw_event()
is not called during probe, causing mcp_gpio_get_direction() to time
out. This fixes that probing takes 12 seconds to complete.
Signed-off-by: Tobias Junghans <redacted>
---
drivers/hid/hid-mcp2221.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/hid/hid-mcp2221.c b/drivers/hid/hid-mcp2221.c
index 4211b9839209..8e54173b195c 100644
--- a/drivers/hid/hid-mcp2221.c
+++ b/drivers/hid/hid-mcp2221.c
@@ -895,7 +895,10 @@ static int mcp2221_probe(struct hid_device *hdev,
mcp->gc->can_sleep = 1;
mcp->gc->parent = &hdev->dev;
+ hid_device_io_start(hdev);
ret = devm_gpiochip_add_data(&hdev->dev, mcp->gc, mcp);
+ hid_device_io_stop(hdev);
+
if (ret)
goto err_gc;
--
2.25.1