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| author | Jiri Slaby <jirislaby@gmail.com> | 2009-07-16 16:06:18 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-16 09:19:16 -0700 |
| commit | 9237a81a1468d0aca1cc4e244bba2362d6f81b35 (patch) | |
| tree | a7bb7bf9f834e25fe7b8189eca678c33dfb19130 /drivers/char | |
| parent | 5c9228f0cfb09a098a8a380116b42ae099e967b6 (diff) | |
| download | linux-9237a81a1468d0aca1cc4e244bba2362d6f81b35.tar.gz linux-9237a81a1468d0aca1cc4e244bba2362d6f81b35.tar.xz | |
tty: nozomi, fix tty refcounting bug
Don't forget to drop a tty refererence on fail paths in
receive_data().
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/nozomi.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 574f1c79b6e6..280b41c507a7 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -828,7 +828,7 @@ static int receive_data(enum port_type index, struct nozomi *dc) struct port *port = &dc->port[index]; void __iomem *addr = port->dl_addr[port->toggle_dl]; struct tty_struct *tty = tty_port_tty_get(&port->port); - int i; + int i, ret; if (unlikely(!tty)) { DBG1("tty not open for port: %d?", index); @@ -844,12 +844,14 @@ static int receive_data(enum port_type index, struct nozomi *dc) /* disable interrupt in downlink... */ disable_transmit_dl(index, dc); - return 0; + ret = 0; + goto put; } if (unlikely(size == 0)) { dev_err(&dc->pdev->dev, "size == 0?\n"); - return 1; + ret = 1; + goto put; } tty_buffer_request_room(tty, size); @@ -871,8 +873,10 @@ static int receive_data(enum port_type index, struct nozomi *dc) } set_bit(index, &dc->flip); + ret = 1; +put: tty_kref_put(tty); - return 1; + return ret; } /* Debug for interrupts */ |