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authorPeter Hurley <peter@hurleysoftware.com>2013-06-15 09:14:23 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-23 16:43:01 -0700
commit6a1c0680cf3ba94356ecd58833e1540c93472a57 (patch)
treed370b0888214bb59049181ac98c567d153263f48 /drivers/tty/vt
parenta2f73be8ee36e48f11f89ab705beb3c587a2f320 (diff)
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tty: Convert termios_mutex to termios_rwsem
termios is commonly accessed unsafely (especially by N_TTY) because the existing mutex forces exclusive access. Convert existing usage. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt')
-rw-r--r--drivers/tty/vt/vt.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index c677829..02af6cc 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -828,7 +828,7 @@ static inline int resize_screen(struct vc_data *vc, int width, int height,
* If the caller passes a tty structure then update the termios winsize
* information and perform any necessary signal handling.
*
- * Caller must hold the console semaphore. Takes the termios mutex and
+ * Caller must hold the console semaphore. Takes the termios rwsem and
* ctrl_lock of the tty IFF a tty is passed.
*/
@@ -972,7 +972,7 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows)
* the actual work.
*
* Takes the console sem and the called methods then take the tty
- * termios_mutex and the tty ctrl_lock in that order.
+ * termios_rwsem and the tty ctrl_lock in that order.
*/
static int vt_resize(struct tty_struct *tty, struct winsize *ws)
{
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