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Code Issues Releases Wiki Activity

Input: move to use request_irq by IRQF_NO_AUTOEN flag

Browse source 
disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable because of requesting.

On the other hand, request_irq() after setting IRQ_NOAUTOEN as
below
irq_set_status_flags(irq, IRQ_NOAUTOEN);
request_irq(dev, irq...);
can also be replaced by request_irq() with IRQF_NO_AUTOEN flag.

Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
Link: https://lore.kernel.org/r/20210302224916.13980-3-song.bao.hua@hisilicon.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Barry Song 2021-03-25 14:43:18 -07:00 committed by Dmitry Torokhov
parent 73cdf82a3d
commit bcd9730a04
11 changed files with 18 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/input/keyboard/tca6416-keypad.c
View file

@ -274,7 +274,7 @@ static int tca6416_keypad_probe(struct i2c_client *client,
error = request_threaded_irq(chip->irqnum, NULL,
tca6416_keys_isr,
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
IRQF_ONESHOT | IRQF_NO_AUTOEN,
"tca6416-keypad", chip);
if (error) {
dev_dbg(&client->dev,
@ -282,7 +282,6 @@ static int tca6416_keypad_probe(struct i2c_client *client,
chip->irqnum, error);
goto fail1;
}
disable_irq(chip->irqnum);
}
error = input_register_device(input);

5
drivers/input/keyboard/tegra-kbc.c
View file

@ -694,14 +694,13 @@ static int tegra_kbc_probe(struct platform_device *pdev)
input_set_drvdata(kbc->idev, kbc);
err = devm_request_irq(&pdev->dev, kbc->irq, tegra_kbc_isr,
IRQF_TRIGGER_HIGH, pdev->name, kbc);
IRQF_TRIGGER_HIGH | IRQF_NO_AUTOEN,
pdev->name, kbc);
if (err) {
dev_err(&pdev->dev, "failed to request keyboard IRQ\n");
return err;
}
disable_irq(kbc->irq);
err = input_register_device(kbc->idev);
if (err) {
dev_err(&pdev->dev, "failed to register input device\n");

5
drivers/input/touchscreen/ar1021_i2c.c
View file

@ -125,7 +125,7 @@ static int ar1021_i2c_probe(struct i2c_client *client,
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, ar1021_i2c_irq,
IRQF_ONESHOT,
IRQF_ONESHOT | IRQF_NO_AUTOEN,
"ar1021_i2c", ar1021);
if (error) {
dev_err(&client->dev,
@ -133,9 +133,6 @@ static int ar1021_i2c_probe(struct i2c_client *client,
return error;
}
/* Disable the IRQ, we'll enable it in ar1021_i2c_open() */
disable_irq(client->irq);
error = input_register_device(ar1021->input);
if (error) {
dev_err(&client->dev,

5
drivers/input/touchscreen/atmel_mxt_ts.c
View file

@ -3215,15 +3215,14 @@ static int mxt_probe(struct i2c_client *client, const struct i2c_device_id *id)
}
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, mxt_interrupt, IRQF_ONESHOT,
NULL, mxt_interrupt,
IRQF_ONESHOT | IRQF_NO_AUTOEN,
client->name, data);
if (error) {
dev_err(&client->dev, "Failed to register interrupt\n");
return error;
}
disable_irq(client->irq);
error = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
data->regulators);
if (error) {

4
drivers/input/touchscreen/bu21029_ts.c
View file

@ -401,10 +401,10 @@ static int bu21029_probe(struct i2c_client *client,
input_set_drvdata(in_dev, bu21029);
irq_set_status_flags(client->irq, IRQ_NOAUTOEN);
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, bu21029_touch_soft_irq,
IRQF_ONESHOT, DRIVER_NAME, bu21029);
IRQF_ONESHOT | IRQF_NO_AUTOEN,
DRIVER_NAME, bu21029);
if (error) {
dev_err(&client->dev,
"unable to request touch irq: %d\n", error);

5
drivers/input/touchscreen/cyttsp_core.c
View file

@ -655,7 +655,8 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
}
error = devm_request_threaded_irq(dev, ts->irq, NULL, cyttsp_irq,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
IRQF_NO_AUTOEN,
"cyttsp", ts);
if (error) {
dev_err(ts->dev, "failed to request IRQ %d, err: %d\n",
@ -663,8 +664,6 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops,
return ERR_PTR(error);
}
disable_irq(ts->irq);
cyttsp_hard_reset(ts);
error = cyttsp_power_on(ts);

5
drivers/input/touchscreen/melfas_mip4.c
View file

@ -1502,7 +1502,8 @@ static int mip4_probe(struct i2c_client *client, const struct i2c_device_id *id)
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, mip4_interrupt,
IRQF_ONESHOT, MIP4_DEVICE_NAME, ts);
IRQF_ONESHOT | IRQF_NO_AUTOEN,
MIP4_DEVICE_NAME, ts);
if (error) {
dev_err(&client->dev,
"Failed to request interrupt %d: %d\n",
@ -1510,8 +1511,6 @@ static int mip4_probe(struct i2c_client *client, const struct i2c_device_id *id)
return error;
}
disable_irq(client->irq);
error = input_register_device(input);
if (error) {
dev_err(&client->dev,

4
drivers/input/touchscreen/mms114.c
View file

@ -530,13 +530,13 @@ static int mms114_probe(struct i2c_client *client,
}
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, mms114_interrupt, IRQF_ONESHOT,
NULL, mms114_interrupt,
IRQF_ONESHOT | IRQF_NO_AUTOEN,
dev_name(&client->dev), data);
if (error) {
dev_err(&client->dev, "Failed to register interrupt\n");
return error;
}
disable_irq(client->irq);
error = input_register_device(data->input_dev);
if (error) {

3
drivers/input/touchscreen/stmfts.c
View file

@ -691,10 +691,9 @@ static int stmfts_probe(struct i2c_client *client,
* interrupts. To be on the safe side it's better to not enable
* the interrupts during their request.
*/
irq_set_status_flags(client->irq, IRQ_NOAUTOEN);
err = devm_request_threaded_irq(&client->dev, client->irq,
NULL, stmfts_irq_handler,
IRQF_ONESHOT,
IRQF_ONESHOT | IRQF_NO_AUTOEN,
"stmfts_irq", sdata);
if (err)
return err;

3
drivers/input/touchscreen/wm831x-ts.c
View file

@ -317,14 +317,13 @@ static int wm831x_ts_probe(struct platform_device *pdev)
error = request_threaded_irq(wm831x_ts->data_irq,
NULL, wm831x_ts_data_irq,
irqf | IRQF_ONESHOT,
irqf | IRQF_ONESHOT | IRQF_NO_AUTOEN,
"Touchscreen data", wm831x_ts);
if (error) {
dev_err(&pdev->dev, "Failed to request data IRQ %d: %d\n",
wm831x_ts->data_irq, error);
goto err_alloc;
}
disable_irq(wm831x_ts->data_irq);
if (pdata && pdata->pd_irqf)
irqf = pdata->pd_irqf;

4
drivers/input/touchscreen/zinitix.c
View file

@ -513,10 +513,10 @@ static int zinitix_ts_probe(struct i2c_client *client)
return -EINVAL;
}
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);
IRQF_ONESHOT | IRQF_NO_AUTOEN,
client->name, bt541);
if (error) {
dev_err(&client->dev, "Failed to request IRQ: %d\n", error);
return error;