serial: 8250: Wait for irq to complete before shutdown
After masking all interrupts, wait for the irq handler to complete before continuing shutdown. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2088,8 +2088,12 @@ void serial8250_do_shutdown(struct uart_port *port)
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/*
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/*
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* Disable interrupts from this port
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* Disable interrupts from this port
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*/
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*/
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spin_lock_irqsave(&port->lock, flags);
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up->ier = 0;
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up->ier = 0;
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serial_port_out(port, UART_IER, 0);
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serial_port_out(port, UART_IER, 0);
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spin_unlock_irqrestore(&port->lock, flags);
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synchronize_irq(port->irq);
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if (up->dma)
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if (up->dma)
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serial8250_release_dma(up);
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serial8250_release_dma(up);
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