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UPSTREAM: serial: qcom-geni: drop bogus uart_write_wakeup()

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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: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Andrew 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 370629635
Change-Id: Ic15a29678c6a6bc3f39af06053e1354de0ba442a
(cherry picked from commit b6a7bac184)
Signed-off-by: Praveen Talari <quic_ptalari@quicinc.com>
This commit is contained in:
Johan Hovold
2023-03-07 17:44:05 +01:00
committed by Treehugger Robot
parent 3991e7fcc9
commit d15f99d2b5
1 changed files with 0 additions and 4 deletions
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4
drivers/tty/serial/qcom_geni_serial.c
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@@ -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);