sysfs_emit() is preferred over raw s*printf() for sysfs attributes since it
knows about the sysfs buffer specifics and has some built-in sanity checks.
This patch converts the places in the iio core that follow the pattern of
return s*printf(...)
to
return sysfs_emit(...)
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/iio/industrialio-buffer.c | 20 ++++++++++----------
drivers/iio/industrialio-core.c | 16 ++++++++--------
drivers/iio/industrialio-event.c | 2 +-
drivers/iio/industrialio-trigger.c | 4 ++--
4 files changed, 21 insertions(+), 21 deletions(-)
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index ee5aab9d4a23..ccc8a8cae604 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -260,7 +260,7 @@ static ssize_t iio_show_scan_index(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%u\n", to_iio_dev_attr(attr)->c->scan_index);
+ return sysfs_emit(buf, "%u\n", to_iio_dev_attr(attr)->c->scan_index);
}
static ssize_t iio_show_fixed_type(struct device *dev,
@@ -278,15 +278,15 @@ static ssize_t iio_show_fixed_type(struct device *dev,
#endif
}
if (this_attr->c->scan_type.repeat > 1)
- return sprintf(buf, "%s:%c%d/%dX%d>>%u\n",
+ return sysfs_emit(buf, "%s:%c%d/%dX%d>>%u\n",
iio_endian_prefix[type],
this_attr->c->scan_type.sign,
this_attr->c->scan_type.realbits,
this_attr->c->scan_type.storagebits,
this_attr->c->scan_type.repeat,
this_attr->c->scan_type.shift);
- else
- return sprintf(buf, "%s:%c%d/%d>>%u\n",
+ else
+ return sysfs_emit(buf, "%s:%c%d/%d>>%u\n",
iio_endian_prefix[type],
this_attr->c->scan_type.sign,
this_attr->c->scan_type.realbits,
@@ -305,7 +305,7 @@ static ssize_t iio_scan_el_show(struct device *dev,
ret = !!test_bit(to_iio_dev_attr(attr)->address,
buffer->scan_mask);
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
/* Note NULL used as error indicator as it doesn't make sense. */
@@ -449,7 +449,7 @@ static ssize_t iio_scan_el_ts_show(struct device *dev,
{
struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
- return sprintf(buf, "%d\n", buffer->scan_timestamp);
+ return sysfs_emit(buf, "%d\n", buffer->scan_timestamp);
}
static ssize_t iio_scan_el_ts_store(struct device *dev,
@@ -541,7 +541,7 @@ static ssize_t iio_buffer_read_length(struct device *dev,
{
struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
- return sprintf(buf, "%d\n", buffer->length);
+ return sysfs_emit(buf, "%d\n", buffer->length);
}
static ssize_t iio_buffer_write_length(struct device *dev,
@@ -583,7 +583,7 @@ static ssize_t iio_buffer_show_enable(struct device *dev,
{
struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
- return sprintf(buf, "%d\n", iio_buffer_is_active(buffer));
+ return sysfs_emit(buf, "%d\n", iio_buffer_is_active(buffer));
}
static unsigned int iio_storage_bytes_for_si(struct iio_dev *indio_dev,
@@ -1227,7 +1227,7 @@ static ssize_t iio_buffer_show_watermark(struct device *dev,
{
struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
- return sprintf(buf, "%u\n", buffer->watermark);
+ return sysfs_emit(buf, "%u\n", buffer->watermark);
}
static ssize_t iio_buffer_store_watermark(struct device *dev,
@@ -1271,7 +1271,7 @@ static ssize_t iio_dma_show_data_available(struct device *dev,
{
struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
- return sprintf(buf, "%zu\n", iio_buffer_data_available(buffer));
+ return sysfs_emit(buf, "%zu\n", iio_buffer_data_available(buffer));
}
static DEVICE_ATTR(length, S_IRUGO | S_IWUSR, iio_buffer_read_length,
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index b5750edf935c..058874af1242 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -234,7 +234,7 @@ ssize_t iio_read_const_attr(struct device *dev,
struct device_attribute *attr,
char *buf)
{
- return sprintf(buf, "%s\n", to_iio_const_attr(attr)->string);
+ return sysfs_emit(buf, "%s\n", to_iio_const_attr(attr)->string);
}
EXPORT_SYMBOL(iio_read_const_attr);
@@ -529,7 +529,7 @@ ssize_t iio_enum_read(struct iio_dev *indio_dev,
else if (i >= e->num_items || !e->items[i])
return -EINVAL;
- return snprintf(buf, PAGE_SIZE, "%s\n", e->items[i]);
+ return sysfs_emit(buf, "%s\n", e->items[i]);
}
EXPORT_SYMBOL_GPL(iio_enum_read);
@@ -580,10 +580,10 @@ ssize_t iio_show_mount_matrix(struct iio_dev *indio_dev, uintptr_t priv,
if (!mtx)
mtx = &iio_mount_idmatrix;
- return snprintf(buf, PAGE_SIZE, "%s, %s, %s; %s, %s, %s; %s, %s, %s\n",
- mtx->rotation[0], mtx->rotation[1], mtx->rotation[2],
- mtx->rotation[3], mtx->rotation[4], mtx->rotation[5],
- mtx->rotation[6], mtx->rotation[7], mtx->rotation[8]);
+ return sysfs_emit(buf, "%s, %s, %s; %s, %s, %s; %s, %s, %s\n",
+ mtx->rotation[0], mtx->rotation[1], mtx->rotation[2],
+ mtx->rotation[3], mtx->rotation[4], mtx->rotation[5],
+ mtx->rotation[6], mtx->rotation[7], mtx->rotation[8]);
}
EXPORT_SYMBOL_GPL(iio_show_mount_matrix);
@@ -1369,7 +1369,7 @@ static ssize_t iio_show_dev_name(struct device *dev,
char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- return snprintf(buf, PAGE_SIZE, "%s\n", indio_dev->name);
+ return sysfs_emit(buf, "%s\n", indio_dev->name);
}
static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
@@ -1379,7 +1379,7 @@ static ssize_t iio_show_dev_label(struct device *dev,
char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
- return snprintf(buf, PAGE_SIZE, "%s\n", indio_dev->label);
+ return sysfs_emit(buf, "%s\n", indio_dev->label);
}
static DEVICE_ATTR(label, S_IRUGO, iio_show_dev_label, NULL);
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index a30e289fc362..1b3a15bc75fe 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -297,7 +297,7 @@ static ssize_t iio_ev_state_show(struct device *dev,
if (val < 0)
return val;
else
- return sprintf(buf, "%d\n", val);
+ return sysfs_emit(buf, "%d\n", val);
}
static ssize_t iio_ev_value_show(struct device *dev,
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 32ac1bec25e3..efeb5e2eca8a 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -50,7 +50,7 @@ static ssize_t iio_trigger_read_name(struct device *dev,
char *buf)
{
struct iio_trigger *trig = to_iio_trigger(dev);
- return sprintf(buf, "%s\n", trig->name);
+ return sysfs_emit(buf, "%s\n", trig->name);
}
static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
@@ -375,7 +375,7 @@ static ssize_t iio_trigger_read_current(struct device *dev,
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
if (indio_dev->trig)
- return sprintf(buf, "%s\n", indio_dev->trig->name);
+ return sysfs_emit(buf, "%s\n", indio_dev->trig->name);
return 0;
}
--
2.20.1
