On Sat, 20 Mar 2021 08:14:01 +0100 Lars-Peter Clausen <lars@xxxxxxxxxx> wrote: > 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. Looks good to me. I'll let this sit on the list for a little while though as obviously touch a lot of drivers + core code so others may well want to check we haven't missed anything! Jonathan > > 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(-) >
