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authorJohan Hovold <johan+linaro@kernel.org>2023-03-07 19:44:05 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-03-09 19:27:53 +0300
commitb6a7bac184472b5b79286a71a61c2f16ea4e86ad (patch)
tree67a0bea6fb0c2b0bf9a863c128bb325bdfc73c8b /drivers/tty
parent97820780b723197d1b472f2bd39fd8593b5d4edc (diff)
downloadlinux-b6a7bac184472b5b79286a71a61c2f16ea4e86ad.tar.xz
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: 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>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/qcom_geni_serial.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 9871225b2f9b..28fbc927a546 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -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);