staging: iio: Use kasprintf to allocate and fill trig->name

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/accel/adis16209_trigger.c b/drivers/staging/iio/accel/adis16209_trigger.c
index 4a0507c..cd901a4 100644 (file)
--- a/drivers/staging/iio/accel/adis16209_trigger.c
+++ b/drivers/staging/iio/accel/adis16209_trigger.c
@@ -83,14 +83,13 @@ int adis16209_probe_trigger(struct iio_dev *indio_dev)
        struct adis16209_state *st = indio_dev->dev_data;
 
        st->trig = iio_allocate_trigger();
-       st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       st->trig->name = kasprintf(GFP_KERNEL,
+                                  "adis16209-dev%d",
+                                  indio_dev->id);
        if (!st->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)st->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "adis16209-dev%d", indio_dev->id);
        st->trig->dev.parent = &st->us->dev;
        st->trig->owner = THIS_MODULE;
        st->trig->private_data = st;

diff --git a/drivers/staging/iio/accel/adis16240_trigger.c b/drivers/staging/iio/accel/adis16240_trigger.c
index df1312e..d58b405 100644 (file)
--- a/drivers/staging/iio/accel/adis16240_trigger.c
+++ b/drivers/staging/iio/accel/adis16240_trigger.c
@@ -83,14 +83,13 @@ int adis16240_probe_trigger(struct iio_dev *indio_dev)
        struct adis16240_state *st = indio_dev->dev_data;
 
        st->trig = iio_allocate_trigger();
-       st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       st->trig->name = kasprintf(GFP_KERNEL,
+                                  "adis16240-dev%d",
+                                  indio_dev->id);
        if (!st->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)st->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "adis16240-dev%d", indio_dev->id);
        st->trig->dev.parent = &st->us->dev;
        st->trig->owner = THIS_MODULE;
        st->trig->private_data = st;

diff --git a/drivers/staging/iio/accel/lis3l02dq_ring.c b/drivers/staging/iio/accel/lis3l02dq_ring.c
index 6b0b124..a33599d 100644 (file)
--- a/drivers/staging/iio/accel/lis3l02dq_ring.c
+++ b/drivers/staging/iio/accel/lis3l02dq_ring.c
@@ -495,14 +495,14 @@ int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
        if (!state->trig)
                return -ENOMEM;
 
-       state->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       state->trig->name = kasprintf(GFP_KERNEL,
+                                     "lis3l02dq-dev%d",
+                                     indio_dev->id);
        if (!state->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)state->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "lis3l02dq-dev%d", indio_dev->id);
+
        state->trig->dev.parent = &state->us->dev;
        state->trig->owner = THIS_MODULE;
        state->trig->private_data = state;

diff --git a/drivers/staging/iio/gyro/adis16260_trigger.c b/drivers/staging/iio/gyro/adis16260_trigger.c
index b3c5659..54afd9e 100644 (file)
--- a/drivers/staging/iio/gyro/adis16260_trigger.c
+++ b/drivers/staging/iio/gyro/adis16260_trigger.c
@@ -83,14 +83,13 @@ int adis16260_probe_trigger(struct iio_dev *indio_dev)
        struct adis16260_state *st = indio_dev->dev_data;
 
        st->trig = iio_allocate_trigger();
-       st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       st->trig->name = kasprintf(GFP_KERNEL,
+                                  "adis16260-dev%d",
+                                  indio_dev->id);
        if (!st->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)st->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "adis16260-dev%d", indio_dev->id);
        st->trig->dev.parent = &st->us->dev;
        st->trig->owner = THIS_MODULE;
        st->trig->private_data = st;

diff --git a/drivers/staging/iio/imu/adis16300_trigger.c b/drivers/staging/iio/imu/adis16300_trigger.c
index 54edb20..a55f383 100644 (file)
--- a/drivers/staging/iio/imu/adis16300_trigger.c
+++ b/drivers/staging/iio/imu/adis16300_trigger.c
@@ -86,14 +86,13 @@ int adis16300_probe_trigger(struct iio_dev *indio_dev)
        struct adis16300_state *st = indio_dev->dev_data;
 
        st->trig = iio_allocate_trigger();
-       st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       st->trig->name = kasprintf(GFP_KERNEL,
+                                  "adis16300-dev%d",
+                                  indio_dev->id);
        if (!st->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)st->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "adis16300-dev%d", indio_dev->id);
        st->trig->dev.parent = &st->us->dev;
        st->trig->owner = THIS_MODULE;
        st->trig->private_data = st;

diff --git a/drivers/staging/iio/imu/adis16350_trigger.c b/drivers/staging/iio/imu/adis16350_trigger.c
index 1ffa75d..fbe246a 100644 (file)
--- a/drivers/staging/iio/imu/adis16350_trigger.c
+++ b/drivers/staging/iio/imu/adis16350_trigger.c
@@ -86,14 +86,13 @@ int adis16350_probe_trigger(struct iio_dev *indio_dev)
        struct adis16350_state *st = indio_dev->dev_data;
 
        st->trig = iio_allocate_trigger();
-       st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       st->trig->name = kasprintf(GFP_KERNEL,
+                                  "adis16350-dev%d",
+                                  indio_dev->id);
        if (!st->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)st->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "adis16350-dev%d", indio_dev->id);
        st->trig->dev.parent = &st->us->dev;
        st->trig->owner = THIS_MODULE;
        st->trig->private_data = st;

diff --git a/drivers/staging/iio/imu/adis16400_trigger.c b/drivers/staging/iio/imu/adis16400_trigger.c
index 3b3250a..bf7c603 100644 (file)
--- a/drivers/staging/iio/imu/adis16400_trigger.c
+++ b/drivers/staging/iio/imu/adis16400_trigger.c
@@ -86,14 +86,13 @@ int adis16400_probe_trigger(struct iio_dev *indio_dev)
        struct adis16400_state *st = indio_dev->dev_data;
 
        st->trig = iio_allocate_trigger();
-       st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+       st->trig->name = kasprintf(GFP_KERNEL,
+                                  "adis16400-dev%d",
+                                  indio_dev->id);
        if (!st->trig->name) {
                ret = -ENOMEM;
                goto error_free_trig;
        }
-       snprintf((char *)st->trig->name,
-                IIO_TRIGGER_NAME_LENGTH,
-                "adis16400-dev%d", indio_dev->id);
        st->trig->dev.parent = &st->us->dev;
        st->trig->owner = THIS_MODULE;
        st->trig->private_data = st;

diff --git a/drivers/staging/iio/industrialio-trigger.c b/drivers/staging/iio/industrialio-trigger.c
index ef088a4..92e6006 100644 (file)
--- a/drivers/staging/iio/industrialio-trigger.c
+++ b/drivers/staging/iio/industrialio-trigger.c
@@ -295,10 +295,9 @@ static ssize_t iio_trigger_read_current(struct device *dev,
        struct iio_dev *dev_info = dev_get_drvdata(dev);
        int len = 0;
        if (dev_info->trig)
-               len = snprintf(buf,
-                              IIO_TRIGGER_NAME_LENGTH,
-                              "%s\n",
-                              dev_info->trig->name);
+               len = sprintf(buf,
+                             "%s\n",
+                             dev_info->trig->name);
        return len;
 }
 
@@ -323,8 +322,6 @@ static ssize_t iio_trigger_write_current(struct device *dev,
        }
        mutex_unlock(&dev_info->mlock);
 
-       len = len < IIO_TRIGGER_NAME_LENGTH ? len : IIO_TRIGGER_NAME_LENGTH;
-
        dev_info->trig = iio_trigger_find_by_name(buf, len);
        if (oldtrig && dev_info->trig != oldtrig)
                iio_put_trigger(oldtrig);

diff --git a/drivers/staging/iio/trigger.h b/drivers/staging/iio/trigger.h
index 784e7b6..89610b5 100644 (file)
--- a/drivers/staging/iio/trigger.h
+++ b/drivers/staging/iio/trigger.h
@@ -8,10 +8,6 @@
  */
 #ifndef _IIO_TRIGGER_H_
 #define _IIO_TRIGGER_H_
-#define IIO_TRIGGER_NAME_LENGTH 20
-#define IIO_TRIGGER_ID_PREFIX "iio:trigger"
-#define IIO_TRIGGER_ID_FORMAT IIO_TRIGGER_ID_PREFIX "%d"
-
 
 /**
  * struct iio_trigger - industrial I/O trigger device

diff --git a/drivers/staging/iio/trigger/iio-trig-gpio.c b/drivers/staging/iio/trigger/iio-trig-gpio.c
index 1da285d..3c0614e 100644 (file)
--- a/drivers/staging/iio/trigger/iio-trig-gpio.c
+++ b/drivers/staging/iio/trigger/iio-trig-gpio.c
@@ -93,16 +93,11 @@ static int iio_gpio_trigger_probe(struct platform_device *pdev)
                        trig->private_data = trig_info;
                        trig_info->irq = irq;
                        trig->owner = THIS_MODULE;
-                       trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH,
-                                       GFP_KERNEL);
-                       if (!trig->name) {
+                       trig->name = kasprintf(GFP_KERNEL, "irqtrig%d", irq);
+                       if (trig->name == NULL) {
                                ret = -ENOMEM;
                                goto error_free_trig_info;
                        }
-                       snprintf((char *)trig->name,
-                                IIO_TRIGGER_NAME_LENGTH,
-                                "irqtrig%d", irq);
-
                        ret = request_irq(irq, iio_gpio_trigger_poll,
                                          irqflags, trig->name, trig);
                        if (ret) {

diff --git a/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c b/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
index 4ee3ae1..d8c58cb 100644 (file)
--- a/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
+++ b/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
@@ -25,7 +25,6 @@ static DEFINE_MUTEX(iio_prtc_trigger_list_lock);
 struct iio_prtc_trigger_info {
        struct rtc_device *rtc;
        int frequency;
-       char *name;
        struct rtc_task task;
 };
 
@@ -78,8 +77,7 @@ static ssize_t iio_trig_periodic_read_name(struct device *dev,
                                           char *buf)
 {
        struct iio_trigger *trig = dev_get_drvdata(dev);
-       struct iio_prtc_trigger_info *trig_info = trig->private_data;
-       return sprintf(buf, "%s\n", trig_info->name);
+       return sprintf(buf, "%s\n", trig->name);
 }
 
 static DEVICE_ATTR(name, S_IRUGO,
@@ -129,16 +127,12 @@ static int iio_trig_periodic_rtc_probe(struct platform_device *dev)
                trig->private_data = trig_info;
                trig->owner = THIS_MODULE;
                trig->set_trigger_state = &iio_trig_periodic_rtc_set_state;
-               trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL);
+               trig->name = kasprintf(GFP_KERNEL, "periodic%s", pdata[i]);
                if (trig->name == NULL) {
                        ret = -ENOMEM;
                        goto error_free_trig_info;
                }
-               snprintf((char *)trig->name,
-                        IIO_TRIGGER_NAME_LENGTH,
-                        "periodic%s",
-                        pdata[i]);
-               trig_info->name = (char *)trig->name;
+
                /* RTC access */
                trig_info->rtc
                        = rtc_class_open(pdata[i]);