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-rw-r--r--Documentation/ABI/testing/sysfs-tty15
1 files changed, 9 insertions, 6 deletions
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
index 820e412d38a8..895c47f05f6f 100644
--- a/Documentation/ABI/testing/sysfs-tty
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -87,19 +87,22 @@ What: /sys/class/tty/ttyS<x>/close_delay
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
- Show the closing delay time for this port in ms.
+ Show the closing delay time for this port in centiseconds.
- These sysfs values expose the TIOCGSERIAL interface via
- sysfs rather than via ioctls.
+ These sysfs values expose the TIOCGSERIAL interface via
+ sysfs rather than via ioctls.
What: /sys/class/tty/ttyS<x>/closing_wait
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
- Show the close wait time for this port in ms.
+ Show the close wait time for this port in centiseconds.
- These sysfs values expose the TIOCGSERIAL interface via
- sysfs rather than via ioctls.
+ Waiting forever is represented as 0. If waiting on close is
+ disabled then the value is 65535.
+
+ These sysfs values expose the TIOCGSERIAL interface via
+ sysfs rather than via ioctls.
What: /sys/class/tty/ttyS<x>/custom_divisor
Date: October 2012