* [PATCH 2/3] Input: adxl34x - switch to using managed resources
2024-06-09 23:41 [PATCH 1/3] Input: adxl34x - use device core to create driver-specific device attributes Dmitry Torokhov
@ 2024-06-09 23:41 ` Dmitry Torokhov
2024-06-10 9:25 ` Nuno Sá
2024-06-09 23:41 ` [PATCH 3/3] Input: adxl34x- switch to using "guard" notation Dmitry Torokhov
2024-06-10 9:17 ` [PATCH 1/3] Input: adxl34x - use device core to create driver-specific device attributes Nuno Sá
2 siblings, 1 reply; 6+ messages in thread
From: Dmitry Torokhov @ 2024-06-09 23:41 UTC (permalink / raw)
To: linux-input; +Cc: Michael Hennerich, linux-kernel
Switch the driver to use managed resources to simplify error handling.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/misc/adxl34x-i2c.c | 8 ---
drivers/input/misc/adxl34x-spi.c | 8 ---
drivers/input/misc/adxl34x.c | 85 +++++++++++---------------------
drivers/input/misc/adxl34x.h | 1 -
4 files changed, 30 insertions(+), 72 deletions(-)
diff --git a/drivers/input/misc/adxl34x-i2c.c b/drivers/input/misc/adxl34x-i2c.c
index 7531c7b2d657..c05d898898e8 100644
--- a/drivers/input/misc/adxl34x-i2c.c
+++ b/drivers/input/misc/adxl34x-i2c.c
@@ -98,13 +98,6 @@ static int adxl34x_i2c_probe(struct i2c_client *client)
return 0;
}
-static void adxl34x_i2c_remove(struct i2c_client *client)
-{
- struct adxl34x *ac = i2c_get_clientdata(client);
-
- adxl34x_remove(ac);
-}
-
static const struct i2c_device_id adxl34x_id[] = {
{ "adxl34x" },
{ }
@@ -137,7 +130,6 @@ static struct i2c_driver adxl34x_driver = {
.of_match_table = adxl34x_of_id,
},
.probe = adxl34x_i2c_probe,
- .remove = adxl34x_i2c_remove,
.id_table = adxl34x_id,
};
diff --git a/drivers/input/misc/adxl34x-spi.c b/drivers/input/misc/adxl34x-spi.c
index 2befcc4df0be..fd716d861832 100644
--- a/drivers/input/misc/adxl34x-spi.c
+++ b/drivers/input/misc/adxl34x-spi.c
@@ -87,13 +87,6 @@ static int adxl34x_spi_probe(struct spi_device *spi)
return 0;
}
-static void adxl34x_spi_remove(struct spi_device *spi)
-{
- struct adxl34x *ac = spi_get_drvdata(spi);
-
- adxl34x_remove(ac);
-}
-
static struct spi_driver adxl34x_driver = {
.driver = {
.name = "adxl34x",
@@ -101,7 +94,6 @@ static struct spi_driver adxl34x_driver = {
.pm = pm_sleep_ptr(&adxl34x_pm),
},
.probe = adxl34x_spi_probe,
- .remove = adxl34x_spi_remove,
};
module_spi_driver(adxl34x_driver);
diff --git a/drivers/input/misc/adxl34x.c b/drivers/input/misc/adxl34x.c
index fbe5a56c19d1..c6c34005f5d2 100644
--- a/drivers/input/misc/adxl34x.c
+++ b/drivers/input/misc/adxl34x.c
@@ -707,21 +707,21 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
struct adxl34x *ac;
struct input_dev *input_dev;
const struct adxl34x_platform_data *pdata;
- int err, range, i;
+ int error, range, i;
int revid;
if (!irq) {
dev_err(dev, "no IRQ?\n");
- err = -ENODEV;
- goto err_out;
+ return ERR_PTR(-ENODEV);
}
- ac = kzalloc(sizeof(*ac), GFP_KERNEL);
- input_dev = input_allocate_device();
- if (!ac || !input_dev) {
- err = -ENOMEM;
- goto err_free_mem;
- }
+ ac = devm_kzalloc(dev, sizeof(*ac), GFP_KERNEL);
+ if (!ac)
+ return ERR_PTR(-ENOMEM);
+
+ input_dev = devm_input_allocate_device(dev);
+ if (!input_dev)
+ return ERR_PTR(-ENOMEM);
ac->fifo_delay = fifo_delay_default;
@@ -754,14 +754,12 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
break;
default:
dev_err(dev, "Failed to probe %s\n", input_dev->name);
- err = -ENODEV;
- goto err_free_mem;
+ return ERR_PTR(-ENODEV);
}
snprintf(ac->phys, sizeof(ac->phys), "%s/input0", dev_name(dev));
input_dev->phys = ac->phys;
- input_dev->dev.parent = dev;
input_dev->id.product = ac->model;
input_dev->id.bustype = bops->bustype;
input_dev->open = adxl34x_input_open;
@@ -769,18 +767,12 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
input_set_drvdata(input_dev, ac);
- __set_bit(ac->pdata.ev_type, input_dev->evbit);
-
if (ac->pdata.ev_type == EV_REL) {
- __set_bit(REL_X, input_dev->relbit);
- __set_bit(REL_Y, input_dev->relbit);
- __set_bit(REL_Z, input_dev->relbit);
+ input_set_capability(input_dev, EV_REL, REL_X);
+ input_set_capability(input_dev, EV_REL, REL_Y);
+ input_set_capability(input_dev, EV_REL, REL_Z);
} else {
/* EV_ABS */
- __set_bit(ABS_X, input_dev->absbit);
- __set_bit(ABS_Y, input_dev->absbit);
- __set_bit(ABS_Z, input_dev->absbit);
-
if (pdata->data_range & FULL_RES)
range = ADXL_FULLRES_MAX_VAL; /* Signed 13-bit */
else
@@ -791,18 +783,18 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
input_set_abs_params(input_dev, ABS_Z, -range, range, 3, 3);
}
- __set_bit(EV_KEY, input_dev->evbit);
- __set_bit(pdata->ev_code_tap[ADXL_X_AXIS], input_dev->keybit);
- __set_bit(pdata->ev_code_tap[ADXL_Y_AXIS], input_dev->keybit);
- __set_bit(pdata->ev_code_tap[ADXL_Z_AXIS], input_dev->keybit);
+ input_set_capability(input_dev, EV_KEY, pdata->ev_code_tap[ADXL_X_AXIS]);
+ input_set_capability(input_dev, EV_KEY, pdata->ev_code_tap[ADXL_Y_AXIS]);
+ input_set_capability(input_dev, EV_KEY, pdata->ev_code_tap[ADXL_Z_AXIS]);
if (pdata->ev_code_ff) {
ac->int_mask = FREE_FALL;
- __set_bit(pdata->ev_code_ff, input_dev->keybit);
+ input_set_capability(input_dev, EV_KEY, pdata->ev_code_ff);
}
if (pdata->ev_code_act_inactivity)
- __set_bit(pdata->ev_code_act_inactivity, input_dev->keybit);
+ input_set_capability(input_dev, EV_KEY,
+ pdata->ev_code_act_inactivity);
ac->int_mask |= ACTIVITY | INACTIVITY;
@@ -822,16 +814,16 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
AC_WRITE(ac, POWER_CTL, 0);
- err = request_threaded_irq(ac->irq, NULL, adxl34x_irq,
- IRQF_ONESHOT, dev_name(dev), ac);
- if (err) {
+ error = devm_request_threaded_irq(dev, ac->irq, NULL, adxl34x_irq,
+ IRQF_ONESHOT, dev_name(dev), ac);
+ if (error) {
dev_err(dev, "irq %d busy?\n", ac->irq);
- goto err_free_mem;
+ return ERR_PTR(error);
}
- err = input_register_device(input_dev);
- if (err)
- goto err_free_irq;
+ error = input_register_device(input_dev);
+ if (error)
+ return ERR_PTR(error);
AC_WRITE(ac, OFSX, pdata->x_axis_offset);
ac->hwcal.x = pdata->x_axis_offset;
@@ -874,13 +866,13 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
if (pdata->orientation_enable & ADXL_EN_ORIENTATION_3D)
for (i = 0; i < ARRAY_SIZE(pdata->ev_codes_orient_3d); i++)
- __set_bit(pdata->ev_codes_orient_3d[i],
- input_dev->keybit);
+ input_set_capability(input_dev, EV_KEY,
+ pdata->ev_codes_orient_3d[i]);
if (pdata->orientation_enable & ADXL_EN_ORIENTATION_2D)
for (i = 0; i < ARRAY_SIZE(pdata->ev_codes_orient_2d); i++)
- __set_bit(pdata->ev_codes_orient_2d[i],
- input_dev->keybit);
+ input_set_capability(input_dev, EV_KEY,
+ pdata->ev_codes_orient_2d[i]);
} else {
ac->pdata.orientation_enable = 0;
}
@@ -890,26 +882,9 @@ struct adxl34x *adxl34x_probe(struct device *dev, int irq,
ac->pdata.power_mode &= (PCTL_AUTO_SLEEP | PCTL_LINK);
return ac;
-
- err_free_irq:
- free_irq(ac->irq, ac);
- err_free_mem:
- input_free_device(input_dev);
- kfree(ac);
- err_out:
- return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(adxl34x_probe);
-void adxl34x_remove(struct adxl34x *ac)
-{
- free_irq(ac->irq, ac);
- input_unregister_device(ac->input);
- dev_dbg(ac->dev, "unregistered accelerometer\n");
- kfree(ac);
-}
-EXPORT_SYMBOL_GPL(adxl34x_remove);
-
EXPORT_GPL_SIMPLE_DEV_PM_OPS(adxl34x_pm, adxl34x_suspend, adxl34x_resume);
MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
diff --git a/drivers/input/misc/adxl34x.h b/drivers/input/misc/adxl34x.h
index 67e0ddc5c3eb..718e90c2046d 100644
--- a/drivers/input/misc/adxl34x.h
+++ b/drivers/input/misc/adxl34x.h
@@ -23,7 +23,6 @@ struct adxl34x_bus_ops {
struct adxl34x *adxl34x_probe(struct device *dev, int irq,
bool fifo_delay_default,
const struct adxl34x_bus_ops *bops);
-void adxl34x_remove(struct adxl34x *ac);
extern const struct dev_pm_ops adxl34x_pm;
extern const struct attribute_group *adxl34x_groups[];
--
2.45.2.505.gda0bf45e8d-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH 3/3] Input: adxl34x- switch to using "guard" notation
2024-06-09 23:41 [PATCH 1/3] Input: adxl34x - use device core to create driver-specific device attributes Dmitry Torokhov
2024-06-09 23:41 ` [PATCH 2/3] Input: adxl34x - switch to using managed resources Dmitry Torokhov
@ 2024-06-09 23:41 ` Dmitry Torokhov
2024-06-10 9:26 ` Nuno Sá
2024-06-10 9:17 ` [PATCH 1/3] Input: adxl34x - use device core to create driver-specific device attributes Nuno Sá
2 siblings, 1 reply; 6+ messages in thread
From: Dmitry Torokhov @ 2024-06-09 23:41 UTC (permalink / raw)
To: linux-input; +Cc: Michael Hennerich, linux-kernel
Switch to using guard(mutex)() notation to acquire and automatically
release mutexes.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/misc/adxl34x.c | 61 ++++++++++++------------------------
1 file changed, 20 insertions(+), 41 deletions(-)
diff --git a/drivers/input/misc/adxl34x.c b/drivers/input/misc/adxl34x.c
index c6c34005f5d2..7cafbf8d5f1a 100644
--- a/drivers/input/misc/adxl34x.c
+++ b/drivers/input/misc/adxl34x.c
@@ -241,7 +241,8 @@ static void adxl34x_get_triple(struct adxl34x *ac, struct axis_triple *axis)
ac->bops->read_block(ac->dev, DATAX0, DATAZ1 - DATAX0 + 1, buf);
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
+
ac->saved.x = (s16) le16_to_cpu(buf[0]);
axis->x = ac->saved.x;
@@ -250,7 +251,6 @@ static void adxl34x_get_triple(struct adxl34x *ac, struct axis_triple *axis)
ac->saved.z = (s16) le16_to_cpu(buf[2]);
axis->z = ac->saved.z;
- mutex_unlock(&ac->mutex);
}
static void adxl34x_service_ev_fifo(struct adxl34x *ac)
@@ -416,15 +416,13 @@ static int adxl34x_suspend(struct device *dev)
{
struct adxl34x *ac = dev_get_drvdata(dev);
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
if (!ac->suspended && !ac->disabled && ac->opened)
__adxl34x_disable(ac);
ac->suspended = true;
- mutex_unlock(&ac->mutex);
-
return 0;
}
@@ -432,15 +430,13 @@ static int adxl34x_resume(struct device *dev)
{
struct adxl34x *ac = dev_get_drvdata(dev);
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
if (ac->suspended && !ac->disabled && ac->opened)
__adxl34x_enable(ac);
ac->suspended = false;
- mutex_unlock(&ac->mutex);
-
return 0;
}
@@ -464,7 +460,7 @@ static ssize_t adxl34x_disable_store(struct device *dev,
if (error)
return error;
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
if (!ac->suspended && ac->opened) {
if (val) {
@@ -478,8 +474,6 @@ static ssize_t adxl34x_disable_store(struct device *dev,
ac->disabled = !!val;
- mutex_unlock(&ac->mutex);
-
return count;
}
@@ -489,16 +483,13 @@ static ssize_t adxl34x_calibrate_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct adxl34x *ac = dev_get_drvdata(dev);
- ssize_t count;
- mutex_lock(&ac->mutex);
- count = sprintf(buf, "%d,%d,%d\n",
- ac->hwcal.x * 4 + ac->swcal.x,
- ac->hwcal.y * 4 + ac->swcal.y,
- ac->hwcal.z * 4 + ac->swcal.z);
- mutex_unlock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
- return count;
+ return sprintf(buf, "%d,%d,%d\n",
+ ac->hwcal.x * 4 + ac->swcal.x,
+ ac->hwcal.y * 4 + ac->swcal.y,
+ ac->hwcal.z * 4 + ac->swcal.z);
}
static ssize_t adxl34x_calibrate_store(struct device *dev,
@@ -512,7 +503,8 @@ static ssize_t adxl34x_calibrate_store(struct device *dev,
* We use HW calibration and handle the remaining bits in SW. (4mg/LSB)
*/
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
+
ac->hwcal.x -= (ac->saved.x / 4);
ac->swcal.x = ac->saved.x % 4;
@@ -525,7 +517,6 @@ static ssize_t adxl34x_calibrate_store(struct device *dev,
AC_WRITE(ac, OFSX, (s8) ac->hwcal.x);
AC_WRITE(ac, OFSY, (s8) ac->hwcal.y);
AC_WRITE(ac, OFSZ, (s8) ac->hwcal.z);
- mutex_unlock(&ac->mutex);
return count;
}
@@ -553,15 +544,13 @@ static ssize_t adxl34x_rate_store(struct device *dev,
if (error)
return error;
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
ac->pdata.data_rate = RATE(val);
AC_WRITE(ac, BW_RATE,
ac->pdata.data_rate |
(ac->pdata.low_power_mode ? LOW_POWER : 0));
- mutex_unlock(&ac->mutex);
-
return count;
}
@@ -588,7 +577,7 @@ static ssize_t adxl34x_autosleep_store(struct device *dev,
if (error)
return error;
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
if (val)
ac->pdata.power_mode |= (PCTL_AUTO_SLEEP | PCTL_LINK);
@@ -598,8 +587,6 @@ static ssize_t adxl34x_autosleep_store(struct device *dev,
if (!ac->disabled && !ac->suspended && ac->opened)
AC_WRITE(ac, POWER_CTL, ac->pdata.power_mode | PCTL_MEASURE);
- mutex_unlock(&ac->mutex);
-
return count;
}
@@ -610,14 +597,11 @@ static ssize_t adxl34x_position_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct adxl34x *ac = dev_get_drvdata(dev);
- ssize_t count;
- mutex_lock(&ac->mutex);
- count = sprintf(buf, "(%d, %d, %d)\n",
- ac->saved.x, ac->saved.y, ac->saved.z);
- mutex_unlock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
- return count;
+ return sprintf(buf, "(%d, %d, %d)\n",
+ ac->saved.x, ac->saved.y, ac->saved.z);
}
static DEVICE_ATTR(position, S_IRUGO, adxl34x_position_show, NULL);
@@ -638,9 +622,8 @@ static ssize_t adxl34x_write_store(struct device *dev,
if (error)
return error;
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
AC_WRITE(ac, val >> 8, val & 0xFF);
- mutex_unlock(&ac->mutex);
return count;
}
@@ -674,15 +657,13 @@ static int adxl34x_input_open(struct input_dev *input)
{
struct adxl34x *ac = input_get_drvdata(input);
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
if (!ac->suspended && !ac->disabled)
__adxl34x_enable(ac);
ac->opened = true;
- mutex_unlock(&ac->mutex);
-
return 0;
}
@@ -690,14 +671,12 @@ static void adxl34x_input_close(struct input_dev *input)
{
struct adxl34x *ac = input_get_drvdata(input);
- mutex_lock(&ac->mutex);
+ guard(mutex)(&ac->mutex);
if (!ac->suspended && !ac->disabled)
__adxl34x_disable(ac);
ac->opened = false;
-
- mutex_unlock(&ac->mutex);
}
struct adxl34x *adxl34x_probe(struct device *dev, int irq,
--
2.45.2.505.gda0bf45e8d-goog
^ permalink raw reply related [flat|nested] 6+ messages in thread