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linux-uconsole/drivers/tty/serial
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Ryan Case 6854d02bcb tty: serial: qcom_geni_serial: Fix softlock 
[ Upstream commit a1fee899e5 ]

Transfers were being divided into device FIFO sized (64 byte max)
operations which would poll for completion within a spin_lock_irqsave /
spin_unlock_irqrestore block. This both made things slow by waiting for
the FIFO to completely drain before adding further data and would also
result in softlocks on large transmissions.

This patch allows larger transfers with continuous FIFO additions as
space becomes available and removes polling from the interrupt handler.

Signed-off-by: Ryan Case <ryandcase@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-12-13 08:52:27 +01:00
..
8250 serial: 8250: Fix serial8250 initialization crash 2019-12-05 09:21:06 +01:00
cpm_uart tty: serial: cpm_uart - fix init when SMC is relocated 2019-07-31 07:26:57 +02:00
jsm tty: serial: jsm: remove redundant pointer ch 2018-07-13 15:36:32 +02:00
21285.c
altera_jtaguart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
altera_uart.c serial: altera: set RRDY flag also without irq 2018-02-28 13:30:09 +01:00
amba-pl010.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
amba-pl011.c serial: pl011: Fix DMA ->flush_buffer() 2019-12-13 08:51:00 +01:00
amba-pl011.h
apbuart.c
apbuart.h
ar933x_uart.c serial: ar933x_uart: Fix build failure with disabled console 2019-05-04 09:20:13 +02:00
arc_uart.c serial: arc_uart: Fix out-of-bounds access through DT alias 2018-02-28 15:29:59 +01:00
atmel_serial.c tty/serial: atmel: reschedule TX after RX was started 2019-09-21 07:16:45 +02:00
atmel_serial.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
bcm63xx_uart.c MIPS changes for 4.15 2017-11-15 11:36:08 -08:00
clps711x.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
digicolor-usart.c tty/serial: digicolor: Fix digicolor-usart already registered warning 2019-07-31 07:26:59 +02:00
dz.c
dz.h
earlycon-arm-semihost.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
earlycon.c earlycon: Remove hardcoded port->uartclk initialization in of_setup_earlycon 2018-05-14 13:41:05 +02:00
efm32-uart.c
fsl_lpuart.c tty: serial: fsl_lpuart: use the sg count from dma_map_sg 2019-12-13 08:50:59 +01:00
icom.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
icom.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
ifx6x60.c serial: ifx6x60: add missed pm_runtime_disable 2019-12-13 08:51:01 +01:00
ifx6x60.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
imx.c serial: imx: fix error handling in console_setup 2019-12-13 08:51:56 +01:00
ioc3_serial.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
ioc4_serial.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
ip22zilog.c
ip22zilog.h
Kconfig tty: serial: drop ATH79 specific SoC symbols 2018-05-14 13:51:12 +02:00
kgdb_nmi.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
kgdboc.c Disable kgdboc failed by echo space to /sys/module/kgdboc/parameters/kgdboc 2019-04-03 06:26:26 +02:00
lantiq.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
lpc32xx_hs.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
Makefile TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
max310x.c serial: max310x: Fix tx_empty() callback 2019-12-05 09:20:40 +01:00
max3100.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
mcf.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
men_z135_uart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
meson_uart.c tty: serial: meson: fix typo in the "stop bit" register definition 2017-11-28 15:32:33 +01:00
mpc52xx_uart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
mps2-uart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
mpsc.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
msm_serial.c tty: serial: msm_serial: Fix flow control 2019-12-13 08:51:00 +01:00
mux.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
mvebu-uart.c serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference 2019-04-03 06:26:25 +02:00
mxs-auart.c serial: mxs-auart: Fix potential infinite loop 2019-11-20 18:46:54 +01:00
netx-serial.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
omap-serial.c tty: omap-serial: Fix initial on-boot RTS GPIO level 2018-01-09 16:45:17 +01:00
owl-uart.c tty: serial: owl: Fix the link time qualifier of 'owl_uart_exit()' 2019-11-06 13:05:49 +01:00
pch_uart.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
pic32_uart.c serial: set suppress_bind_attrs flag only if builtin 2019-01-26 09:32:34 +01:00
pic32_uart.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
pmac_zilog.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
pmac_zilog.h
pnx8xxx_uart.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
pxa.c serial: pxa: Fix an error handling path in 'serial_pxa_probe()' 2018-06-28 21:07:54 +09:00
qcom_geni_serial.c tty: serial: qcom_geni_serial: Fix softlock 2019-12-13 08:52:27 +01:00
rp2.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
sa1100.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
samsung.c serial: samsung: Enable baud clock for UART reset procedure in resume 2019-11-20 18:46:53 +01:00
samsung.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
sb1250-duart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
sc16is7xx.c sc16is7xx: Fix for "Unexpected interrupt: 8" 2019-11-06 13:05:15 +01:00
sccnxp.c headers: separate linux/mod_devicetable.h from linux/platform_device.h 2018-07-07 17:52:26 +02:00
serial-tegra.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
serial_core.c serial: serial_core: Perform NULL checks for break_ctl ops 2019-12-13 08:51:00 +01:00
serial_ks8695.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
serial_mctrl_gpio.c serial: mctrl_gpio: Check for NULL pointer 2019-11-06 13:05:52 +01:00
serial_mctrl_gpio.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
serial_txx9.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
sh-sci.c serial: sh-sci: Fix crash in rx_timer_fn() on PIO fallback 2019-12-05 09:20:23 +01:00
sh-sci.h serial: sh-sci: Support for HSCIF RX sampling point adjustment 2018-04-23 10:08:18 +02:00
sirfsoc_uart.c serial: sirf: Fix out-of-bounds access through DT alias 2018-02-28 15:30:00 +01:00
sirfsoc_uart.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
sn_console.c treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
sprd_serial.c serial: sprd: correct the wrong sequence of arguments 2019-09-21 07:16:45 +02:00
st-asc.c tty: serial: simplify getting .drvdata 2018-04-22 17:29:43 +02:00
stm32-usart.c serial: stm32: fix initialization of RS485 mode 2018-03-15 17:39:43 +01:00
stm32-usart.h serial: stm32: add support for RS485 hardware control mode 2018-03-14 13:35:37 +01:00
suncore.c drivers/tty: add missing of_node_put() 2018-12-21 14:15:18 +01:00
sunhv.c sunhv: Fix device naming inconsistency between sunhv_console and sunhv_reg 2019-06-22 08:15:14 +02:00
sunsab.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
sunsab.h
sunsu.c serial/sunsu: fix refcount leak 2019-01-13 09:51:03 +01:00
sunzilog.c
sunzilog.h
timbuart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
timbuart.h tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
uartlite.c serial: uartlite: fix exit path null pointer 2019-10-17 13:45:00 -07:00
ucc_uart.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
vr41xx_siu.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
vt8500_serial.c tty: serial: Remove redundant license text 2017-11-08 13:08:12 +01:00
xilinx_uartps.c serial: uartps: Fix suspend functionality 2019-11-20 18:46:53 +01:00
zs.c
zs.h