Commit b6a7bac1 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

serial: qcom-geni: drop bogus uart_write_wakeup() 



Drop the bogus uart_write_wakeup() from when setting up a new DMA
transfer, which does not free up any more space in the ring buffer.

Any pending writers will be woken up when the transfer completes.

Cc: stable <stable@kernel.org>
Signed-off-by: default avatarJohan Hovold <johan+linaro@kernel.org>
Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
Reviewed-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: default avatarAndrew Halaney <ahalaney@redhat.com>
Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8540p-ride
Link: https://lore.kernel.org/r/20230307164405.14218-5-johan+linaro@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 97820780

drivers/tty/serial/qcom_geni_serial.c

+0 −4
Original line number Diff line number Diff line
@@ -634,10 +634,6 @@ static void qcom_geni_serial_start_tx_dma(struct uart_port *uport) 
	if (uart_circ_empty(xmit))

		return;



	xmit_size = uart_circ_chars_pending(xmit);

	if (xmit_size < WAKEUP_CHARS)

		uart_write_wakeup(uport);



	xmit_size = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);



	qcom_geni_serial_setup_tx(uport, xmit_size);