diff mbox series

[5.10,43/43] Input: zinitix - make sure the IRQ is allocated before it gets enabled

Message ID 20220110071818.798892318@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Jan. 10, 2022, 7:23 a.m. UTC 
From: Nikita Travkin <nikita@trvn.ru>

commit cf73ed894ee939d6706d65e0cd186e4a64e3af6d upstream.

Since irq request is the last thing in the driver probe, it happens
later than the input device registration. This means that there is a
small time window where if the open method is called the driver will
attempt to enable not yet available irq.

Fix that by moving the irq request before the input device registration.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Fixes: 26822652c85e ("Input: add zinitix touchscreen driver")
Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Link: https://lore.kernel.org/r/20220106072840.36851-2-nikita@trvn.ru
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/input/touchscreen/zinitix.c |   16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
diff mbox series

Patch

--- a/drivers/input/touchscreen/zinitix.c
+++ b/drivers/input/touchscreen/zinitix.c
@@ -488,6 +488,15 @@  static int zinitix_ts_probe(struct i2c_c
 		return error;
 	}
 
+	error = devm_request_threaded_irq(&client->dev, client->irq,
+					  NULL, zinitix_ts_irq_handler,
+					  IRQF_ONESHOT,
+					  client->name, bt541);
+	if (error) {
+		dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
+		return error;
+	}
+
 	error = zinitix_init_input_dev(bt541);
 	if (error) {
 		dev_err(&client->dev,
@@ -514,13 +523,6 @@  static int zinitix_ts_probe(struct i2c_c
 	}
 
 	irq_set_status_flags(client->irq, IRQ_NOAUTOEN);
-	error = devm_request_threaded_irq(&client->dev, client->irq,
-					  NULL, zinitix_ts_irq_handler,
-					  IRQF_ONESHOT, client->name, bt541);
-	if (error) {
-		dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
-		return error;
-	}
 
 	return 0;
 }