diff options
| author | Alan Cox <alan@linux.intel.com> | 2011-08-26 12:26:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-26 20:01:15 +0200 |
| commit | da4e40e271a30ecf8b87f70619cca93c25ed0199 (patch) | |
| tree | 56e8778f8f7e42121c512655b4d5b18b61e6b3f4 /drivers | |
| parent | max3110: add sysrq support (diff) | |
| download | linux-da4e40e271a30ecf8b87f70619cca93c25ed0199.tar.xz linux-da4e40e271a30ecf8b87f70619cca93c25ed0199.zip | |
max3110: Fix up port->tty backreferencing
We want to keep refcounts properly on this against hangup.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/serial/mrst_max3110.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c index 42aa43934b20..1aa2c3cd2146 100644 --- a/drivers/tty/serial/mrst_max3110.c +++ b/drivers/tty/serial/mrst_max3110.c @@ -347,7 +347,7 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) if (!port->state) return 0; - tty = port->state->port.tty; + tty = tty_port_tty_get(&port->state->port); if (!tty) return 0; @@ -364,8 +364,10 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) } } - if (!w) + if (!w) { + tty_kref_put(tty); return 0; + } for (r = 0; w; r += usable, w -= usable) { usable = tty_buffer_request_room(tty, w); @@ -375,6 +377,7 @@ receive_chars(struct uart_max3110 *max, unsigned short *str, int len) } } tty_flip_buffer_push(tty); + tty_kref_put(tty); return r; } |