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Code Issues Releases Wiki Activity
linux-stable/drivers/tty/serial
History
Annaliese McDermond 158e800e0f sc16is7xx: Defer probe if device read fails 
A test was added to the probe function to ensure the device was
actually connected and working before successfully completing a
probe.  If the device was actually there, but the I2C bus was not
ready yet for whatever reason, the probe fails permanently.

Change the probe so that we defer the probe on a regmap read
failure so that we try the probe again when the dependent drivers
are potentially loaded.  This should not affect the case where the
device truly isn't present because the probe will never successfully
complete.

Fixes: 2aa916e67d ("sc16is7xx: Read the LSR register for basic device presence check")
Cc: stable@vger.kernel.org
Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
Link: https://lore.kernel.org/r/010101787f9c3fd8-c1815c00-2d6b-4c85-a96a-a13e68597fda-000000@us-west-2.amazonses.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-05 12:07:32 +02:00
..
8250 serial: 8250: Make symbol 'brcmuart_debugfs_root' static 2021-04-02 16:12:27 +02:00
cpm_uart tty: cpm_uart, use port->flags instead of low_latency 2021-01-07 16:17:31 +01:00
jsm Merge 5.12-rc6 into tty-next 2021-04-05 08:59:21 +02:00
21285.c tty: serial: 21285: fix lockup on open 2020-10-28 13:39:14 +01:00
altera_jtaguart.c serial: altera_jtaguart: Replace HTTP links with HTTPS ones 2020-07-21 20:04:54 +02:00
altera_uart.c
amba-pl010.c amba: Make the remove callback return void 2021-02-02 14:25:50 +01:00
amba-pl011.c amba: Make the remove callback return void 2021-02-02 14:25:50 +01:00
amba-pl011.h
apbuart.c
apbuart.h
ar933x_uart.c serial: ar933x_uart: disable clk on error handling path in probe 2020-11-12 09:41:07 +01:00
arc_uart.c
atmel_serial.c Linux 5.9-rc3 2020-08-31 07:19:25 +02:00
atmel_serial.h
bcm63xx_uart.c Revert "tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart" 2020-05-04 11:49:57 +02:00
clps711x.c
digicolor-usart.c
dz.c
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c earlycon: simplify earlycon-table implementation 2020-12-04 15:49:48 +01:00
fsl_linflexuart.c tty: serial: linflexuart: Remove unnecessary '|' operation and add error count 2020-11-06 17:12:30 +01:00
fsl_lpuart.c serial: fsl_lpuart: Use of_device_get_match_data() 2021-01-20 18:48:15 +01:00
icom.c module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
icom.h
imx.c serial: imx: drop workaround for forced irq threading 2021-03-23 10:32:44 +01:00
imx_earlycon.c tty: serial: imx: add imx earlycon driver 2020-07-29 17:11:02 +02:00
ip22zilog.c
ip22zilog.h
Kconfig tty: serial: samsung_tty: Add support for Apple UARTs 2021-03-10 09:34:10 +01:00
kgdb_nmi.c tty: do not check tty_unregister_driver's return value 2021-03-10 09:34:09 +01:00
kgdboc.c Linux 5.8-rc6 2020-07-20 09:39:11 +02:00
lantiq.c tty/serial/lantiq: convert comma to semicolon 2020-12-28 16:10:50 +01:00
liteuart.c serial: liteuart: fix return value check in liteuart_probe() 2021-03-10 09:34:10 +01:00
lpc32xx_hs.c tty: serial: lpc32xx_hs: Remove unused variable 'tmp' 2020-11-06 10:54:04 +01:00
Makefile serial: ifx6x60: Remove driver for deprecated platform 2021-01-26 19:21:49 +01:00
max310x.c tty: max310x: fix flexible_array.cocci warnings 2021-03-23 10:24:27 +01:00
max3100.c tty_port: drop last traces of low_latency 2021-01-07 16:17:32 +01:00
mcf.c serial: mcf: add sysrq capability 2020-10-05 13:32:30 +02:00
men_z135_uart.c tty: serial, fix kernel-doc 2020-08-18 13:51:18 +02:00
meson_uart.c tty: serial: meson: enable console as module 2020-12-11 17:14:22 +01:00
milbeaut_usio.c
mpc52xx_uart.c
mps2-uart.c
msm_serial.c tty: serial: msm_serial: Constify msm_uart_pops 2020-11-06 17:16:36 +01:00
mux.c
mvebu-uart.c serial: mvebu-uart: fix tx lost characters at power off 2020-12-28 16:17:34 +01:00
mxs-auart.c serial: mxs-auart: Remove <asm/cacheflush.h> 2021-01-20 18:48:19 +01:00
omap-serial.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
owl-uart.c tty: serial: owl: Add support for kernel debugger 2021-01-13 17:16:54 +01:00
pch_uart.c serial: pch_uart: fix build error with !CONFIG_DEBUG_FS 2021-03-23 10:31:09 +01:00
pic32_uart.c
pic32_uart.h
pmac_zilog.c m68k: Fix WARNING splat in pmac_zilog driver 2020-11-23 11:31:00 +01:00
pmac_zilog.h tty: serial: pmac_zilog: Remove unused disposable variable 'garbage' 2020-11-13 15:28:27 +01:00
pxa.c
qcom_geni_serial.c soc: qcom-geni-se: Cleanup the code to remove proxy votes 2021-03-26 15:16:05 +01:00
rda-uart.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rp2.c
sa1100.c serial: sa1100: use platform_get_resource() 2020-08-18 15:02:06 +02:00
samsung_tty.c tty: serial: samsung_tty: remove spinlock flags in interrupt handlers 2021-03-23 10:20:38 +01:00
sb1250-duart.c MIPS: Replace SIBYTE_1956_WAR by CONFIG_SB1_PASS_2_WORKAROUNDS 2020-09-07 22:24:51 +02:00
sc16is7xx.c sc16is7xx: Defer probe if device read fails 2021-04-05 12:07:32 +02:00
sccnxp.c
serial-tegra.c tty: serial: serial-tegra: Provide some missing struct member descriptions 2020-11-06 10:54:05 +01:00
serial_core.c serial: core: Remove BUG_ON(in_interrupt()) check 2021-02-09 11:45:04 +01:00
serial_mctrl_gpio.c serial: mctrl_gpio: Fix passing zero to 'ERR_PTR' warning 2020-11-06 17:12:05 +01:00
serial_mctrl_gpio.h
serial_txx9.c serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init 2020-11-06 17:24:41 +01:00
sh-sci.c drivers: tty: serial: sh-sci: fix spelling typo of 'wheter' 2021-03-23 10:24:59 +01:00
sh-sci.h serial: sh-sci: Drop unused include 2020-04-16 16:13:34 +02:00
sifive.c riscv: Fix sifive serial driver 2021-01-07 18:02:13 -08:00
sprd_serial.c
st-asc.c
stm32-usart.c tty/serial: Add rx-tx-swap OF option to stm32-usart 2021-04-05 12:06:52 +02:00
stm32-usart.h tty/serial: Add rx-tx-swap OF option to stm32-usart 2021-04-05 12:06:52 +02:00
suncore.c
sunhv.c Revert "serial: sunhv: Initialize lock for non-registered console" 2020-07-21 18:21:49 +02:00
sunsab.c serial: sunsab: Return proper error code from console ->setup() hook 2020-06-25 14:21:28 +02:00
sunsab.h
sunsu.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sunzilog.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sunzilog.h
tegra-tcu.c
timbuart.c tty: timbuart: convert tasklets to use new tasklet_setup() API 2020-08-18 13:33:13 +02:00
timbuart.h
uartlite.c tty: serial: uartlite: Support probe deferral 2020-12-04 16:51:40 +01:00
ucc_uart.c serial: ucc_uart: make qe_uart_set_mctrl() static 2020-09-16 13:14:58 +02:00
vr41xx_siu.c
vt8500_serial.c
xilinx_uartps.c tty: serial: xilinx_uartps: Supply description for missing member 'cts_override' 2020-11-06 10:54:05 +01:00
zs.c
zs.h