sysfs_emit() and sysfs_emit_at() are new helper functions for output data for sysfs attributes. They are 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 series updates the IIO core to make use these new helper functions instead of raw s*printf(). In addition all the powerdown callbacks of DAC drivers are also updated to use sysfs_emit(). There remain many instances of s*printf() in individual drivers for now. These can be converted in follow up patch series. But in many cases rather than doing the conversion from s*printf() to sysfs_emit() it will be better to convert those drivers to implement read_raw() or read_avail() callbacks and let the IIO core do the formatting. Implementing read_raw() or read_avail() instead of directly implementing a sysfs attribute has the advantage that the data can then also be accessed through in-kernel APIs and is available to in-kernel consumers. Lars-Peter Clausen (4): iio: core: Use sysfs_emit() (trivial bits) iio: iio_enum_available_read(): Convert to sysfs_emit_at() iio: __iio_format_value(): Convert to sysfs_emit_at() iio: dac: Convert powerdown read callbacks to sysfs_emit() drivers/iio/dac/ad5064.c | 2 +- drivers/iio/dac/ad5360.c | 2 +- drivers/iio/dac/ad5380.c | 2 +- drivers/iio/dac/ad5446.c | 2 +- drivers/iio/dac/ad5504.c | 4 +- drivers/iio/dac/ad5624r_spi.c | 4 +- drivers/iio/dac/ad5686.c | 2 +- drivers/iio/dac/ad5755.c | 4 +- drivers/iio/dac/ad5758.c | 2 +- drivers/iio/dac/ad5770r.c | 2 +- drivers/iio/dac/ad5791.c | 2 +- drivers/iio/dac/ad7303.c | 2 +- drivers/iio/dac/ltc2632.c | 4 +- drivers/iio/dac/max5821.c | 2 +- drivers/iio/dac/mcp4725.c | 2 +- drivers/iio/dac/stm32-dac.c | 2 +- drivers/iio/dac/ti-dac082s085.c | 2 +- drivers/iio/dac/ti-dac5571.c | 2 +- drivers/iio/dac/ti-dac7311.c | 2 +- drivers/iio/industrialio-buffer.c | 20 ++++----- drivers/iio/industrialio-core.c | 70 +++++++++++++++--------------- drivers/iio/industrialio-event.c | 2 +- drivers/iio/industrialio-trigger.c | 4 +- 23 files changed, 71 insertions(+), 71 deletions(-) -- 2.20.1
