Ilpo Järvinen be03b0651f serial: 8250: Store to lsr_save_flags after lsr read ... Not all LSR register flags are preserved across reads. Therefore, LSR readers must store the non-preserved bits into lsr_save_flags. This fix was initially mixed into feature commit f6f586102a ("serial: 8250: Handle UART without interrupt on TEMT using em485"). However, that feature change had a flaw and it was reverted to make room for simpler approach providing the same feature. The embedded fix got reverted with the feature change. Re-add the lsr_save_flags fix and properly mark it's a fix. Link: https://lore.kernel.org/all/1d6c31d-d194-9e6a-ddf9-5f29af829f3@linux.intel.com/T/#m1737eef986bd20cf19593e344cebd7b0244945fc Fixes: e490c9144c ("tty: Add software emulated RS485 support for 8250") Cc: stable <stable@kernel.org> Acked-by: Uwe Kleine-König <u.kleine-koenig@penugtronix.de> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/f4d774be-1437-a550-8334-19d8722ab98c@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-06-10 13:52:19 +02:00
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8250
cpm_uart
jsm
21285.c
altera_jtaguart.c
altera_uart.c
amba-pl010.c
amba-pl011.c
apbuart.c
apbuart.h
ar933x_uart.c
arc_uart.c
atmel_serial.c
atmel_serial.h
bcm63xx_uart.c
clps711x.c
digicolor-usart.c
dz.c
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c
fsl_linflexuart.c
fsl_lpuart.c
icom.c
imx.c
imx_earlycon.c
ip22zilog.c
ip22zilog.h
Kconfig
kgdb_nmi.c
kgdboc.c
lantiq.c
liteuart.c
lpc32xx_hs.c
Makefile
max310x.c
max3100.c
mcf.c
men_z135_uart.c
meson_uart.c
milbeaut_usio.c
mpc52xx_uart.c
mps2-uart.c
msm_serial.c
mux.c
mvebu-uart.c
mxs-auart.c
omap-serial.c
owl-uart.c
pch_uart.c
pic32_uart.c
pmac_zilog.c
pmac_zilog.h
pxa.c
qcom_geni_serial.c
rda-uart.c
rp2.c
sa1100.c
samsung_tty.c
sb1250-duart.c
sc16is7xx.c
sccnxp.c
serial-tegra.c
serial_core.c
serial_mctrl_gpio.c
serial_mctrl_gpio.h
serial_txx9.c
sh-sci.c
sh-sci.h
sifive.c
sprd_serial.c
st-asc.c
stm32-usart.c
stm32-usart.h
suncore.c
sunhv.c
sunplus-uart.c
sunsab.c
sunsab.h
sunsu.c
sunzilog.c
sunzilog.h
tegra-tcu.c
timbuart.c
timbuart.h
uartlite.c
ucc_uart.c
vr41xx_siu.c
vt8500_serial.c
xilinx_uartps.c
zs.c
zs.h