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spi: docs: adjust summary to CONFIG_SYSFS_DEPRECATED removal

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With commit 721da5cee9 ("driver core: remove CONFIG_SYSFS_DEPRECATED and
CONFIG_SYSFS_DEPRECATED_V2"), ./scripts/checkkconfigsymbols.py indicated
an unresolved reference to the config SYSFS_DEPRECATED in the SPI summary
documentation.

Simply, delete the sentence referring to the removed config there. Also
update the documentation, as these sys/class entries should always be
symlinks, as the commit message of the commit above suggests.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230314075609.5232-1-lukas.bulwahn@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lukas Bulwahn 2023-03-14 08:56:09 +01:00 committed by Mark Brown
parent 4d8ff713e6
commit 93d205457d
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1 changed files with 10 additions and 13 deletions
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23
Documentation/spi/spi-summary.rst
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@ -178,10 +178,10 @@ shows up in sysfs in several locations::
/sys/bus/spi/drivers/D ... driver for one or more spi*.* devices
/sys/class/spi_master/spiB ... symlink (or actual device node) to
a logical node which could hold class related state for the SPI
master controller managing bus "B". All spiB.* devices share one
physical SPI bus segment, with SCLK, MOSI, and MISO.
/sys/class/spi_master/spiB ... symlink to a logical node which could hold
class related state for the SPI master controller managing bus "B".
All spiB.* devices share one physical SPI bus segment, with SCLK,
MOSI, and MISO.
/sys/devices/.../CTLR/slave ... virtual file for (un)registering the
slave device for an SPI slave controller.
@ -191,16 +191,13 @@ shows up in sysfs in several locations::
Reading from this file shows the name of the slave device ("(null)"
if not registered).
/sys/class/spi_slave/spiB ... symlink (or actual device node) to
a logical node which could hold class related state for the SPI
slave controller on bus "B". When registered, a single spiB.*
device is present here, possible sharing the physical SPI bus
segment with other SPI slave devices.
/sys/class/spi_slave/spiB ... symlink to a logical node which could hold
class related state for the SPI slave controller on bus "B". When
registered, a single spiB.* device is present here, possible sharing
the physical SPI bus segment with other SPI slave devices.
Note that the actual location of the controller's class state depends
on whether you enabled CONFIG_SYSFS_DEPRECATED or not. At this time,
the only class-specific state is the bus number ("B" in "spiB"), so
those /sys/class entries are only useful to quickly identify busses.
At this time, the only class-specific state is the bus number ("B" in "spiB"),
so those /sys/class entries are only useful to quickly identify busses.
How does board-specific init code declare SPI devices?