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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-04-30 11:54:18 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-30 19:29:47 +0400
commit39c2e60f8c584c1b29b5c4375dd49df7995386bb (patch)
treefcb7e742d38c6e4655660d89be01e61d58ceebc4 /include/linux/tty_driver.h
parent8cd64518a3d166a21f5c69ac7860b3add0369dd0 (diff)
downloadlinux-39c2e60f8c584c1b29b5c4375dd49df7995386bb.tar.xz
tty: add throttle/unthrottle helpers
Something Arjan suggested which allows us to clean up the code nicely Signed-off-by: Alan Cox <alan@redhat.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/tty_driver.h')
-rw-r--r--include/linux/tty_driver.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index f80d73b690f6..59f1c0bd8f9c 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -100,6 +100,8 @@
* This routine notifies the tty driver that input buffers for
* the line discipline are close to full, and it should somehow
* signal that no more characters should be sent to the tty.
+ *
+ * Optional: Always invoke via tty_throttle();
*
* void (*unthrottle)(struct tty_struct * tty);
*
@@ -107,6 +109,8 @@
* that characters can now be sent to the tty without fear of
* overrunning the input buffers of the line disciplines.
*
+ * Optional: Always invoke via tty_unthrottle();
+ *
* void (*stop)(struct tty_struct *tty);
*
* This routine notifies the tty driver that it should stop