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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-31 16:18:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-31 16:18:55 -0700
commit1f944f976d7ef8a29d1ad296253d3a9387c58e62 (patch)
tree454ef4a50ea47c054171cdde6fdc5eb767ab6d4b /Documentation/ABI
parentMerge tag 'mmc-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc (diff)
parentserial: 8250: Optimize irq enable after console write (diff)
downloadwireguard-linux-1f944f976d7ef8a29d1ad296253d3a9387c58e62.tar.xz
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Merge tag 'tty-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH: "Here is the big set of TTY / Serial patches for 5.7-rc1 Lots of console fixups and reworking in here, serial core tweaks (doesn't that ever get old, why are we still creating new serial devices?), serial driver updates, line-protocol driver updates, and some vt cleanups and fixes included in here as well. All have been in linux-next with no reported issues" * tag 'tty-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (161 commits) serial: 8250: Optimize irq enable after console write serial: 8250: Fix rs485 delay after console write vt: vt_ioctl: fix use-after-free in vt_in_use() vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console tty: serial: make SERIAL_SPRD depend on COMMON_CLK tty: serial: fsl_lpuart: fix return value checking tty: serial: fsl_lpuart: move dma_request_chan() ARM: dts: tango4: Make /serial compatible with ns16550a ARM: dts: mmp*: Make the serial ports compatible with xscale-uart ARM: dts: mmp*: Fix serial port names ARM: dts: mmp2-brownstone: Don't redeclare phandle references ARM: dts: pxa*: Make the serial ports compatible with xscale-uart ARM: dts: pxa*: Fix serial port names ARM: dts: pxa*: Don't redeclare phandle references serial: omap: drop unused dt-bindings header serial: 8250: 8250_omap: Add DMA support for UARTs on K3 SoCs serial: 8250: 8250_omap: Work around errata causing spurious IRQs with DMA serial: 8250: 8250_omap: Extend driver data to pass FIFO trigger info serial: 8250: 8250_omap: Move locking out from __dma_rx_do_complete() serial: 8250: 8250_omap: Account for data in flight during DMA teardown ...
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-tty7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
index 9eb3c2b6b040..e157130a6792 100644
--- a/Documentation/ABI/testing/sysfs-tty
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -154,3 +154,10 @@ Description:
device specification. For example, when user sets 7bytes on
16550A, which has 1/4/8/14 bytes trigger, the RX trigger is
automatically changed to 4 bytes.
+
+What: /sys/class/tty/ttyS0/console
+Date: February 2020
+Contact: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+Description:
+ Allows user to detach or attach back the given device as
+ kernel console. It shows and accepts a boolean variable.