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serial: liteuart: Fix NULL pointer dereference in ->remove()

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commit 0f55f89d98 upstream.

drvdata has to be set in _probe() - otherwise platform_get_drvdata()
causes null pointer dereference BUG in _remove().

Fixes: 1da81e5562 ("drivers/tty/serial: add LiteUART driver")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ilia Sergachev <silia@ethz.ch>
Link: https://lore.kernel.org/r/20211115224944.23f8c12b@dtkw
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilia Sergachev
2021-11-15 22:49:44 +01:00
committed by Greg Kroah-Hartman
parent 54b4cfe4c9
commit 189c99c629
1 changed files with 2 additions and 0 deletions
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2
drivers/tty/serial/liteuart.c
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@ -285,6 +285,8 @@ static int liteuart_probe(struct platform_device *pdev)
port->line = dev_id; port->line = dev_id;
spin_lock_init(&port->lock); spin_lock_init(&port->lock);
platform_set_drvdata(pdev, port);
return uart_add_one_port(&liteuart_driver, &uart->port); return uart_add_one_port(&liteuart_driver, &uart->port);
} }