Merge tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipgrafted

Pull futex fix from Ingo Molnar:

 - Also allocate a default private futex hash on vfork() as well, to
   avoid races with (private) futex waiters (Peter Zijlstra)

* tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Also allocate private hash on vfork()

1 files changed, 34 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-spi-master b/Documentation/ABI/testing/sysfs-class-spi-master
new file mode 100644
index 000000000..0a524fcd9
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-spi-master
@@ -0,0 +1,34 @@
+What:		/sys/class/spi_master/spiB/new_device
+Date:		July 2026
+KernelVersion:	7.3
+Contact:	linux-spi@vger.kernel.org
+Description:	(WO) Instantiate a new SPI device on bus B, where B
+		is the bus number (0, 1, 2, ...). Takes parameters
+		in the format:
+
+		<modalias> <chip_select> [<max_speed_hz> [<mode>]]
+
+		where modalias is the driver name, chip_select is the
+		CS line number, and max_speed_hz and mode are optional.
+
+		The device can later be removed with delete_device.
+
+		Only devices created via this interface can be removed
+		with delete_device; platform and DT devices are not
+		affected.
+
+		Example:
+		# echo spidev 0 > /sys/class/spi_master/spi0/new_device
+		# echo spidev 0 10000000 > /sys/class/spi_master/spi0/new_device
+		# echo spidev 0 10000000 3 > /sys/class/spi_master/spi0/new_device
+
+What:		/sys/class/spi_master/spiB/delete_device
+Date:		July 2026
+KernelVersion:	7.3
+Contact:	linux-spi@vger.kernel.org
+Description:	(WO) Remove a SPI device previously created via
+		new_device. Takes a single parameter: the chip select
+		number of the device to remove.
+
+		Example:
+		# echo 0 > /sys/class/spi_master/spi0/delete_device