[PATCH 2/2] serial: 8250: 8250_omap: Fix throttling when DMA is enabled

omap_8250_throttle() is called when tty RX buffer is about to overflow and can no longer keep up with the rate at which UART is receiving data. So, the expectation of this callback, is that UART stops RX and asserts HW flow control to signal the sender to stop sending more data.

[PATCH 2/2] serial: 8250: 8250_omap: Fix throttling when DMA is enabled

omap_8250_throttle() is called when tty RX buffer is about to overflow and can no longer keep up with the rate at which UART is receiving data. So, the expectation of this callback, is that UART stops RX and asserts HW flow control to signal the sender to stop sending more data.