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linux/drivers/tty/serial
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Tony Lindgren cc994bb975 serial: 8250: Fix runtime PM for start_tx() for empty buffer 
Commit 932d596378b0 ("serial: 8250: Return early in .start_tx() if there
are no chars to send") caused a regression where the drivers implementing
runtime PM stopped idling. This is because serial8250_rpm_put_tx() is now
unbalanced on early return, it normally gets called at __stop_tx().

Fixes: 932d596378b0 ("serial: 8250: Return early in .start_tx() if there are no chars to send")
Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20220411111657.16744-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-15 11:42:09 +02:00
..
8250
serial: 8250: Fix runtime PM for start_tx() for empty buffer
2022-04-15 11:42:09 +02:00
cpm_uart
serial: cpm_uart: Protect udbg definitions by CONFIG_SERIAL_CPM_CONSOLE
2021-10-30 11:01:48 +02:00
jsm
tty: serial: jsm: fix two assignments in if conditions
2022-03-18 13:15:50 +01:00
21285.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
altera_jtaguart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
altera_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
amba-pl010.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
amba-pl011.c
serial: amba-pl011: do not time out prematurely when draining tx fifo
2022-04-15 11:41:56 +02:00
amba-pl011.h
…
apbuart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
apbuart.h
…
ar933x_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
arc_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
atmel_serial.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
atmel_serial.h
…
bcm63xx_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
clps711x.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
digicolor-usart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
dz.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
dz.h
…
earlycon-arm-semihost.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
earlycon-riscv-sbi.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
earlycon.c
earlycon: simplify earlycon-table implementation
2020-12-04 15:49:48 +01:00
fsl_linflexuart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
fsl_lpuart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
icom.c
tty: serial: icom: include <linux/io.h> instead of <asm/io.h>
2021-05-13 18:29:11 +02:00
icom.h
…
imx_earlycon.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
imx.c
serial: imx: fix overrun interrupts in DMA mode
2022-04-15 11:41:58 +02:00
ip22zilog.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
ip22zilog.h
…
Kconfig
tty: serial: samsung: Add ARTPEC-8 support
2022-03-18 13:29:05 +01:00
kgdb_nmi.c
tty: drop put_tty_driver
2021-07-27 12:17:21 +02:00
kgdboc.c
kgdboc: fix return value of __setup handler
2022-03-18 13:12:33 +01:00
lantiq.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
liteuart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
lpc32xx_hs.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
Makefile
serial: sunplus-uart: Add Sunplus SoC UART Driver
2022-02-26 10:03:21 +01:00
max310x.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
max3100.c
TTY/Serial driver changes for 5.18-rc1
2022-03-28 13:00:51 -07:00
mcf.c
serial: mcf: use helpers in mcf_tx_chars()
2022-01-26 14:55:14 +01:00
men_z135_uart.c
tty: serial, fix kernel-doc
2020-08-18 13:51:18 +02:00
meson_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
milbeaut_usio.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
mpc52xx_uart.c
tty: serial: mpc52xx_uart: make rx/tx hooks return unsigned, part II.
2022-04-04 10:33:02 +02:00
mps2-uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
msm_serial.c
sound updates for 5.17-rc1
2022-01-14 14:55:38 +01:00
mux.c
parisc: Make struct parisc_driver::remove() return void
2021-08-30 10:18:25 +02:00
mvebu-uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
mxs-auart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
omap-serial.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
owl-uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
pch_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
pic32_uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
pic32_uart.h
…
pmac_zilog.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
pmac_zilog.h
tty: serial: pmac_zilog: Remove unused disposable variable 'garbage'
2020-11-13 15:28:27 +01:00
pxa.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
qcom_geni_serial.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
rda-uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
rp2.c
serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
2021-05-21 20:34:02 +02:00
sa1100.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
samsung_tty.c
tty: serial: samsung: Add ARTPEC-8 support
2022-03-18 13:29:05 +01:00
sb1250-duart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sc16is7xx.c
TTY/Serial driver changes for 5.18-rc1
2022-03-28 13:00:51 -07:00
sccnxp.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
serial_core.c
serial: 8250: fix XOFF/XON sending when DMA is used
2022-03-18 13:30:54 +01:00
serial_mctrl_gpio.c
serial: mctrl_gpio: add a new API to enable / disable wake_irq
2022-02-08 11:07:16 +01:00
serial_mctrl_gpio.h
serial: mctrl_gpio: add a new API to enable / disable wake_irq
2022-02-08 11:07:16 +01:00
serial_txx9.c
tty: serial: serial_txx9: remove struct uart_txx9_port
2022-03-18 13:13:17 +01:00
serial-tegra.c
tty: serial: make use of UART_LCR_WLEN() + tty_get_char_size()
2022-02-28 21:49:06 +01:00
sh-sci.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sh-sci.h
serial: sh-sci: Add support for RZ/G2L SoC
2021-06-04 15:12:40 +02:00
sifive.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sprd_serial.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
st-asc.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
stm32-usart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
stm32-usart.h
serial: stm32: rework TX DMA state condition
2022-01-06 15:58:46 +01:00
suncore.c
…
sunhv.c
Revert "serial: sunhv: Initialize lock for non-registered console"
2020-07-21 18:21:49 +02:00
sunplus-uart.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sunsab.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sunsab.h
…
sunsu.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sunzilog.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
sunzilog.h
…
tegra-tcu.c
serial: tegra-tcu: Reorder channel initialization
2021-06-15 14:02:06 +02:00
timbuart.c
serial: timbuart: drop low-latency workaround
2021-04-22 12:09:26 +02:00
timbuart.h
…
uartlite.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
ucc_uart.c
firmware: replace HOTPLUG with UEVENT in FW_ACTION defines
2021-05-13 16:14:45 +02:00
vr41xx_siu.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
vt8500_serial.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
xilinx_uartps.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
zs.c
serial: make uart_console_write->putchar()'s character an unsigned char
2022-03-03 15:06:31 +01:00
zs.h
…