Add the missing error handling when allocating the transmit buffer to
avoid dereferencing a NULL pointer in write() should the allocation
ever fail.
Fixes: ba4dc61fe8c5 ("Staging: ipack: add support for IP-OCTAL mezzanine board")
Cc: stable@xxxxxxxxxxxxxxx # 3.5
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/ipack/devices/ipoctal.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index d6875aa6a295..61c41f535510 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -385,7 +385,9 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
channel = &ipoctal->channel[i];
tty_port_init(&channel->tty_port);
- tty_port_alloc_xmit_buf(&channel->tty_port);
+ res = tty_port_alloc_xmit_buf(&channel->tty_port);
+ if (res)
+ continue;
channel->tty_port.ops = &ipoctal_tty_port_ops;
ipoctal_reset_stats(&channel->stats);
--
2.32.0
