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authorJiri Slaby <jslaby@suse.cz>2012-08-07 21:47:58 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-13 16:50:21 -0700
commitd2281107457cacf44d60b8a97c5db1af27c3a716 (patch)
treed5192c7d4957ff779381696f44cda62f2940b0df /drivers/s390/char
parent3ec0a17ef5f4ea922b10ebfdb99473c4d8d6120d (diff)
downloadop-kernel-dev-d2281107457cacf44d60b8a97c5db1af27c3a716.zip
op-kernel-dev-d2281107457cacf44d60b8a97c5db1af27c3a716.tar.gz
TTY: con3215, add tty install
This has two outcomes: * we give the TTY layer a tty_port * we do not find the info structure every time open is called on that tty Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/s390/char')
-rw-r--r--drivers/s390/char/con3215.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 1655498..9ffb6d5 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -942,6 +942,19 @@ static int __init con3215_init(void)
console_initcall(con3215_init);
#endif
+static int tty3215_install(struct tty_driver *driver, struct tty_struct *tty)
+{
+ struct raw3215_info *raw;
+
+ raw = raw3215[tty->index];
+ if (raw == NULL)
+ return -ENODEV;
+
+ tty->driver_data = raw;
+
+ return tty_port_install(&raw->port, driver, tty);
+}
+
/*
* tty3215_open
*
@@ -949,14 +962,9 @@ console_initcall(con3215_init);
*/
static int tty3215_open(struct tty_struct *tty, struct file * filp)
{
- struct raw3215_info *raw;
+ struct raw3215_info *raw = tty->driver_data;
int retval;
- raw = raw3215[tty->index];
- if (raw == NULL)
- return -ENODEV;
-
- tty->driver_data = raw;
tty_port_tty_set(&raw->port, tty);
tty->low_latency = 0; /* don't use bottom half for pushing chars */
@@ -1117,6 +1125,7 @@ static void tty3215_start(struct tty_struct *tty)
}
static const struct tty_operations tty3215_ops = {
+ .install = tty3215_install,
.open = tty3215_open,
.close = tty3215_close,
.write = tty3215_write,
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