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authorSudip Mukherjee <sudipm.mukherjee@gmail.com>2019-12-27 17:44:34 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-12-30 19:34:44 +0100
commit273f632912f1b24b642ba5b7eb5022e43a72f3b5 (patch)
treeb434419adec916b3ee23047e22784bb6a20f1840 /drivers/tty
parent46cf053efec6a3a5f343fead837777efe8252a46 (diff)
tty: always relink the port
If the serial device is disconnected and reconnected, it re-enumerates properly but does not link it. fwiw, linking means just saving the port index, so allow it always as there is no harm in saving the same value again even if it tries to relink with the same port. Fixes: fb2b90014d78 ("tty: link tty and port before configuring it as console") Reported-by: Kenneth R. Crudup <kenny@panix.com> Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191227174434.12057-1-sudipm.mukherjee@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/tty_port.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 5023c85ebc6e..044c3cbdcfa4 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -89,8 +89,7 @@ void tty_port_link_device(struct tty_port *port,
{
if (WARN_ON(index >= driver->num))
return;
- if (!driver->ports[index])
- driver->ports[index] = port;
+ driver->ports[index] = port;
}
EXPORT_SYMBOL_GPL(tty_port_link_device);