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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-06-29 09:42:38 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-06-29 09:42:38 +0100
commitc5f4644e6c8ba21666128603e4e92544d3cd740d (patch)
tree1a8b4c730ca575d4b1118af174b070764803fb2c /Documentation/serial
parenta839688362e32f01608838516036697e30618b39 (diff)
downloadvexpress-lsk-c5f4644e6c8ba21666128603e4e92544d3cd740d.tar.gz
[PATCH] Serial: Adjust serial locking
This patch changes the way serial ports are locked when getting modem status. This change is necessary because we will need to atomically read the modem status and take action depending on the CTS status. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'Documentation/serial')
-rw-r--r--Documentation/serial/driver4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index e9c0178cd20..ac7eabbf662 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -107,8 +107,8 @@ hardware.
indicate that the signal is permanently active. If RI is
not available, the signal should not be indicated as active.
- Locking: none.
- Interrupts: caller dependent.
+ Locking: port->lock taken.
+ Interrupts: locally disabled.
This call must not sleep
stop_tx(port,tty_stop)