[PATCH 1/2] HID: mcp2221: enable HID I/O during probe

[Tobias Junghans <tobias.junghans@inhub.de>]

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 <tobias.junghans@inhub.de>
---
 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