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virtio_console: initialize vtermno value for ports
[ Upstream commit 4b0a2c5ff7
]
For regular serial ports we do not initialize value of vtermno
variable. A garbage value is assigned for non console ports.
The value can be observed as a random integer with [1].
[1] vim /sys/kernel/debug/virtio-ports/vport*p*
This patch initialize the value of vtermno for console serial
ports to '1' and regular serial ports are initiaized to '0'.
Reported-by: siliu@redhat.com
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
7b98acf18e
commit
6673b01c7f
1 changed files with 2 additions and 1 deletions
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@ -75,7 +75,7 @@ struct ports_driver_data {
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/* All the console devices handled by this driver */
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struct list_head consoles;
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};
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static struct ports_driver_data pdrvdata;
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static struct ports_driver_data pdrvdata = { .next_vtermno = 1};
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static DEFINE_SPINLOCK(pdrvdata_lock);
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static DECLARE_COMPLETION(early_console_added);
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@ -1425,6 +1425,7 @@ static int add_port(struct ports_device *portdev, u32 id)
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port->async_queue = NULL;
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port->cons.ws.ws_row = port->cons.ws.ws_col = 0;
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port->cons.vtermno = 0;
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port->host_connected = port->guest_connected = false;
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port->stats = (struct port_stats) { 0 };
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