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| author | Johan Hovold <jhovold@gmail.com> | 2013-09-10 12:50:50 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-10-26 21:06:05 +0100 |
| commit | 4f31ab80a2bf09ea0e57c351842da1e647cfe9da (patch) | |
| tree | ed4b0a77983b7661c0512303d18f0819613fc0e1 /drivers/tty | |
| parent | 73449fe73fa3d46232176fe6c73702b29b6479d2 (diff) | |
| download | kernel_samsung_smdk4412-4f31ab80a2bf09ea0e57c351842da1e647cfe9da.zip kernel_samsung_smdk4412-4f31ab80a2bf09ea0e57c351842da1e647cfe9da.tar.gz kernel_samsung_smdk4412-4f31ab80a2bf09ea0e57c351842da1e647cfe9da.tar.bz2 | |
serial: pch_uart: fix tty-kref leak in dma-rx path
commit 19b85cfb190eb9980eaf416bff96aef4159a430e upstream.
Fix tty_kref leak when tty_buffer_request room fails in dma-rx path.
Note that the tty ref isn't really needed anymore, but as the leak has
always been there, fixing it before removing should makes it easier to
backport the fix.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 8d208f1..f5440a7 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -552,11 +552,12 @@ static int dma_push_rx(struct eg20t_port *priv, int size) dev_warn(port->dev, "Rx overrun: dropping %u bytes\n", size - room); if (!room) - return room; + goto out; tty_insert_flip_string(tty, sg_virt(&priv->sg_rx), size); port->icount.rx += room; +out: tty_kref_put(tty); return room; |