AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/drivers/tty/serial
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Kazuhiro Fujita 3dc4db3662 serial: sh-sci: Make sure status register SCxSR is read in correct sequence 
For SCIF and HSCIF interfaces the SCxSR register holds the status of
data that is to be read next from SCxRDR register, But where as for
SCIFA and SCIFB interfaces SCxSR register holds status of data that is
previously read from SCxRDR register.

This patch makes sure the status register is read depending on the port
types so that errors are caught accordingly.

Cc: <stable@vger.kernel.org>
Signed-off-by: Kazuhiro Fujita <kazuhiro.fujita.jg@renesas.com>
Signed-off-by: Hao Bui <hao.bui.yg@renesas.com>
Signed-off-by: KAZUMI HARADA <kazumi.harada.rh@renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1585333048-31828-1-git-send-email-kazuhiro.fujita.jg@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-16 16:16:52 +02:00
..
8250 TTY/Serial patches for 5.7-rc1 2020-03-31 16:18:55 -07:00
cpm_uart tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
jsm tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
21285.c tty: serial: 21285: stop using the unused[] variable from struct uart_port 2019-12-19 20:10:28 +01:00
altera_jtaguart.c
altera_uart.c
amba-pl010.c tty/serial: Migrate amba-pl01* to use has_sysrq 2019-12-18 15:04:44 +01:00
amba-pl011.c tty/serial: Migrate amba-pl01* to use has_sysrq 2019-12-18 15:04:44 +01:00
amba-pl011.h
apbuart.c tty/serial: Migrate apbuart to use has_sysrq 2019-12-18 15:04:44 +01:00
apbuart.h
ar933x_uart.c serial: ar933x_uart: add RS485 support 2020-03-06 13:26:26 +01:00
arc_uart.c tty/serial: Migrate arc_uart to use has_sysrq 2019-12-18 15:04:45 +01:00
atmel_serial.c tty/serial: atmel: Use uart_console() helper 2020-03-12 10:00:22 +01:00
atmel_serial.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
bcm63xx_uart.c tty/serial: Migrate bcm63xx_uart to use has_sysrq 2019-12-18 15:04:43 +01:00
clps711x.c tty/serial: Migrate clps711x to use has_sysrq 2019-12-18 15:04:46 +01:00
digicolor-usart.c
dz.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c serial: earlycon: prefer EARLYCON_DECLARE() variant 2020-03-07 09:52:01 +01:00
efm32-uart.c tty: serial: efm32: fix spelling mistake "reserverd" -> "reserved" 2020-02-19 11:38:58 +01:00
fsl_linflexuart.c tty/serial: Migrate fsl_linflexuart to use has_sysrq 2019-12-18 15:04:48 +01:00
fsl_lpuart.c tty: serial: fsl_lpuart: fix return value checking 2020-03-26 15:34:05 +01:00
icom.c
icom.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
ifx6x60.c tty: serial: ifx6x60: Convert to GPIO descriptors 2020-03-12 10:03:54 +01:00
ifx6x60.h tty: serial: ifx6x60: Convert to GPIO descriptors 2020-03-12 10:03:54 +01:00
imx.c tty: imx serial: Implement support for reversing TX and RX polarity 2020-03-06 13:26:26 +01:00
ip22zilog.c tty/serial: Migrate ip22zilog to use has_sysrq 2019-12-18 15:04:50 +01:00
ip22zilog.h
Kconfig Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
kgdb_nmi.c tty/serial: kgdb_nmi: use true,false for bool variable 2020-01-14 14:34:04 +01:00
kgdboc.c kgdboc: Use for_each_console() helper 2020-02-10 12:34:43 -08:00
lantiq.c tty: serial: lantiq: Drop GPIO include 2020-03-06 13:16:16 +01:00
lpc32xx_hs.c TTY/Serial driver changes for 5.4-rc1 2019-09-18 10:50:47 -07:00
Makefile {tty: serial, nand: onenand}: samsung: rename to fix build warning 2019-11-18 18:49:11 +01:00
max310x.c serial: max310x: turn off transmitter before activating AutoCTS or auto transmitter flow control 2019-09-05 09:57:44 +02:00
max3100.c
mcf.c
men_z135_uart.c drivers: mcb: use symbol namespaces 2019-11-03 19:54:53 +01:00
meson_uart.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
milbeaut_usio.c tty/serial: Migrate milbeaut_usio to use has_sysrq 2019-12-18 15:04:51 +01:00
mpc52xx_uart.c tty/serial: mpc52xx_uart: Don't zero port->sysrq 2019-12-18 15:04:52 +01:00
mps2-uart.c
msm_serial.c tty: serial: msm_serial: RX SW/FIFO mode fallback 2020-01-14 14:07:51 +01:00
mux.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
mvebu-uart.c tty:serial:mvebu-uart:fix a wrong return 2020-03-05 21:26:34 +01:00
mxs-auart.c tty/serial: Migrate mxs-auart to use has_sysrq 2019-12-18 15:04:53 +01:00
omap-serial.c TTY/Serial patches for 5.7-rc1 2020-03-31 16:18:55 -07:00
owl-uart.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
pch_uart.c tty: serial: pch_uart: Use scnprintf() for avoiding potential buffer overflow 2020-03-18 12:59:29 +01:00
pic32_uart.c serial: pic32_uart: Use uart_console() helper 2020-03-12 10:00:22 +01:00
pic32_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
pmac_zilog.c tty/serial: Migrate pmac_zilog to use has_sysrq 2019-12-18 15:04:56 +01:00
pmac_zilog.h
pnx8xxx_uart.c tty/serial: Migrate pnx8xxx_uart to use has_sysrq 2019-12-18 15:04:57 +01:00
pxa.c tty/serial: Migrate pxa to use has_sysrq 2019-12-18 15:04:57 +01:00
qcom_geni_serial.c tty: serial: qcom_geni_serial: Don't try to manually disable the console 2020-03-14 09:40:27 +01:00
rda-uart.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
rp2.c
sa1100.c tty/serial: Migrate sa1100 to use has_sysrq 2019-12-18 15:04:59 +01:00
samsung_tty.c serial: samsung: Rename Exynos to lowercase 2020-01-06 20:22:33 +01:00
sb1250-duart.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
sc16is7xx.c serial: sc16is7xx: Replace zero-length array with flexible-array member 2020-02-13 12:00:23 -08:00
sccnxp.c tty/serial: Migrate sccnxp to use has_sysrq 2019-12-18 15:05:00 +01:00
serial_core.c serial: core: Allow detach and attach serial device for console 2020-03-17 15:57:59 +01:00
serial_mctrl_gpio.c serial: mctrl_gpio: Check for NULL pointer 2019-10-07 13:21:54 +02:00
serial_mctrl_gpio.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
serial_txx9.c tty/serial: Migrate serial_txx9 to use has_sysrq 2019-12-18 15:05:01 +01:00
serial-tegra.c tty: serial: tegra: Handle RX transfer in PIO mode if DMA wasn't started 2020-02-10 12:32:13 -08:00
sh-sci.c serial: sh-sci: Make sure status register SCxSR is read in correct sequence 2020-04-16 16:16:52 +02:00
sh-sci.h
sifive.c tty: serial: Add CONSOLE_POLL support to SiFive UART 2020-03-18 11:07:13 +01:00
sirfsoc_uart.c
sirfsoc_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
sprd_serial.c serial: sprd: remove redundant sprd_port cleanup 2020-03-18 12:20:04 +01:00
st-asc.c tty: st-asc: switch to using devm_gpiod_get() 2020-01-10 14:01:33 +01:00
stm32-usart.c tty/serial: Migrate stm32-usart to use has_sysrq 2019-12-18 15:05:04 +01:00
stm32-usart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
suncore.c
sunhv.c serial: sunhv: Initialize lock for non-registered console 2020-04-16 16:16:52 +02:00
sunsab.c tty/serial: Migrate sunsab to use has_sysrq 2019-12-18 15:05:05 +01:00
sunsab.h
sunsu.c tty/serial: Migrate sunsu to use has_sysrq 2019-12-18 15:05:06 +01:00
sunzilog.c tty/serial: Migrate sunzilog to use has_sysrq 2019-12-18 15:05:08 +01:00
sunzilog.h
tegra-tcu.c
timbuart.c
timbuart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
uartlite.c Revert "serial-uartlite: Move the uart register" 2019-11-14 06:29:08 +08:00
ucc_uart.c ARM: SoC-related driver updates 2020-02-08 14:04:19 -08:00
vr41xx_siu.c tty/serial: Migrate vr41xx_siu to use has_sysrq 2019-12-18 15:05:09 +01:00
vt8500_serial.c tty/serial: Migrate vt8500_serial to use has_sysrq 2019-12-18 15:05:09 +01:00
xilinx_uartps.c Revert "serial: uartps: Register own uart console and driver structures" 2020-04-16 16:00:48 +02:00
zs.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
zs.h