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kernel_samsung_a53x/drivers/tty/serial
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Hugo Villeneuve 1777c86ed4 serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO 
commit dbf4ab821804df071c8b566d9813083125e6d97b upstream.

The SC16IS7XX IC supports a burst mode to access the FIFOs where the
initial register address is sent ($00), followed by all the FIFO data
without having to resend the register address each time. In this mode, the
IC doesn't increment the register address for each R/W byte.

The regmap_raw_read() and regmap_raw_write() are functions which can
perform IO over multiple registers. They are currently used to read/write
from/to the FIFO, and although they operate correctly in this burst mode on
the SPI bus, they would corrupt the regmap cache if it was not disabled
manually. The reason is that when the R/W size is more than 1 byte, these
functions assume that the register address is incremented and handle the
cache accordingly.

Convert FIFO R/W functions to use the regmap _noinc_ versions in order to
remove the manual cache control which was a workaround when using the
_raw_ versions. FIFO registers are properly declared as volatile so
cache will not be used/updated for FIFO accesses.

Fixes: dfeae619d781 ("serial: sc16is7xx")
Cc:  <stable@vger.kernel.org>
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20231211171353.2901416-6-hugo@hugovil.com
Cc: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-19 09:22:41 +01:00
..
8250 serial: Lock console when calling into driver before registration 2024-11-19 09:22:18 +01:00
cpm_uart Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
jsm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
21285.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
altera_jtaguart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
altera_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
amba-pl010.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
amba-pl011.c ARM: PL011: Fix DMA support 2024-11-18 12:11:46 +01:00
amba-pl011.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
apbuart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
apbuart.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ar933x_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
arc_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
atmel_serial.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
atmel_serial.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bcm63xx_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
clps711x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
digicolor-usart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dz.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dz.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
earlycon-arm-semihost.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
earlycon-riscv-sbi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
earlycon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
efm32-uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
exynos_tty.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
exynos_tty.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fsl_linflexuart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fsl_lpuart.c tty: serial: fsl_lpuart: avoid idle preamble pending if CTS is enabled 2024-11-19 09:22:39 +01:00
icom.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
icom.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ifx6x60.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ifx6x60.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
imx.c serial: imx: Correct clock error message in function probe() 2024-11-18 12:12:50 +01:00
imx_earlycon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ip22zilog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ip22zilog.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig serial: max310x: implement I2C support 2024-11-18 23:19:53 +01:00
kgdb_nmi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kgdboc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lantiq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lpc32xx_hs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
max310x.c serial: max310x: fix NULL pointer dereference in I2C instantiation 2024-11-19 09:22:15 +01:00
max3100.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mcf.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
men_z135_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
meson_uart.c tty: serial: meson: fix hard LOCKUP on crtscts mode 2024-11-18 11:43:26 +01:00
milbeaut_usio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mpc52xx_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mps2-uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
msm_geni_serial_earlycon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
msm_serial.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mux.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mvebu-uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mxs-auart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
omap-serial.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
owl-uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pch_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pic32_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pic32_uart.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pmac_zilog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pmac_zilog.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pnx8xxx_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pxa.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
qcom_geni_serial.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rda-uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rp2.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sa1100.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
samsung_tty.c tty: serial: samsung: fix tx_empty() to return TIOCSER_TEMT 2024-11-19 08:44:58 +01:00
sb1250-duart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sc16is7xx.c serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO 2024-11-19 09:22:41 +01:00
sccnxp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
serial-tegra.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
serial_core.c serial: Lock console when calling into driver before registration 2024-11-19 09:22:18 +01:00
serial_mctrl_gpio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
serial_mctrl_gpio.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
serial_txx9.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sh-sci.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sh-sci.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sifive.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sirfsoc_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sirfsoc_uart.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sprd_serial.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
st-asc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stm32-usart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
stm32-usart.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
suncore.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunhv.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunsab.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunsab.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunsu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunzilog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sunzilog.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tegra-tcu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
timbuart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
timbuart.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
uartlite.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ucc_uart.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vr41xx_siu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vt8500_serial.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xilinx_uartps.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
zs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00