Input: zinitix - make sure the IRQ is allocated before it gets enabled

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>

diff --git a/drivers/input/touchscreen/zinitix.c b/drivers/input/touchscreen/zinitix.c
index fd8b4e9f08a21f07792f8b2b145f2f43857313e9..6df6f07f1ac66a036737e1957a5ed8007cd7f2bd 100644 (file)
--- a/drivers/input/touchscreen/zinitix.c
+++ b/drivers/input/touchscreen/zinitix.c
@@ -488,6 +488,15 @@ static int zinitix_ts_probe(struct i2c_client *client)
                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_client *client)
        }
 
        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;
 }