Johan Hedberg
4f85f461e5
drivers: serial: ns16550: prevent DW8250 TX FIFO overflow in fifo_fill ...
With CONFIG_UART_NS16550_DW8250_DW_APB, uart_ns16550_irq_tx_ready()
reports the transmitter ready whenever USR.TFNF is set, i.e. as soon as
the TX FIFO has room, while uart_ns16550_fifo_fill() writes up to
fifo_size bytes without checking how much room there actually is. When
the ISR runs with data left in the FIFO, the excess bytes are written to
a full FIFO and lost.
On the Silicon Labs SiWx917 (ulpuart, ns16550 with the DW8250 option)
this happens right after boot and about once per thousand fills under
load: the UART ISR is entered with no interrupt pending (IIR reads 0xC1)
while the FIFO still holds 15 of the 16 bytes of the previous fill, so
the fill loses up to 15 bytes. With the Bluetooth monitor in
interrupt-driven mode on that UART the stream had a truncated New Index
frame after every boot and lost 15-byte chunks every 1-2 seconds, while
the polled mode was unaffected.
Stop the DW8250 fill loop as soon as USR.TFNF clears, so that the driver
never writes more than the FIFO can take and returns the number of bytes
it actually accepted.
Fixes #117777
Assisted-by: Claude:claude-fable-5
Signed-off-by: Johan Hedberg <johan.hedberg@silabs.com>
2026-09-01 21:05:40 -04:00
drivers: serial: Add serial driver for TI Tiva C Series SoC
2026-08-24 14:03:15 -07:00
drivers: serial: Add serial driver for TI Tiva C Series SoC
2026-08-24 14:03:15 -07:00
drivers: uart: aesc: Fix Copyright Text
2026-06-12 07:49:34 +02:00
doc: remove more occurances of Nios II
2025-05-15 20:01:05 -04:00
drivers: uart: ambiq: enable driver for apollo4x
2025-11-04 16:53:51 +02:00
drivers: serial: add amebadplus loguart driver
2025-12-15 17:06:38 +00:00
drivers: all: telink-b91: select PINCTRL
2024-12-05 15:17:47 +01:00
drivers: uart: bee: add async API for Realtek Bee series
2026-08-08 16:31:05 -04:00
bflb: Make BL60x independant from SDK
2025-08-01 07:57:36 -04:00
serial: add SERIAL_HAS_POST_KERNEL_INIT
2026-07-09 07:58:11 +02:00
serial: add an uart-bridge driver
2025-05-14 20:11:00 +01:00
serial: uart_bt: select SERIAL_SUPPORT_INTERRUPT
2025-05-19 18:39:16 +01:00
drivers: all: cc12xx_cc26xx: select PINCTRL
2024-12-05 15:18:01 +01:00
drivers: serial: cc23x0: Add support for DMA mode
2025-06-10 12:08:22 +02:00
Revert "drivers: uart: unify xilinx ps uart driver with cadence uart driver"
2026-07-27 06:09:38 -05:00
drivers: uart: adds pinctrl support for Arm cmsdk uart driver
2025-04-07 15:18:10 +02:00
drivers: serial: Add UART driver for ELAN EM32 series
2026-07-28 12:28:40 -07:00
emul: Support UART device emulation
2024-07-30 18:28:17 +01:00
drivers: uart: uart driver
2025-06-27 10:57:20 +02:00
drivers: serial: add esp32c5 support
2026-03-19 14:53:05 -05:00
drivers: serial: focaltech: add ft9001 serial driver
2025-12-18 12:13:19 +00:00
soc: gd32: Drop PINCTRL from Kconfig.defconfig
2024-11-04 13:40:42 -06:00
modules: hal_silabs: rename gecko kconfigs
2026-06-17 08:05:45 +02:00
boards: nxp: Removing CONFIG_PINCTRL from the boards defconfig
2024-10-15 19:09:45 -04:00
dts: bindings: Drop cat1 from the infineon binding files
2025-12-17 13:58:09 -05:00
ITE: it8xxx2: Remove CONFIG_PINCTRL from soc defconfig file
2024-10-15 13:52:55 +02:00
drivers/serial: Add ITE UART wrapper to enable serial driver of ns16550
2025-04-08 10:48:26 +02:00
modules: hal_silabs: rename gecko kconfigs
2026-06-17 08:05:45 +02:00
dts: bindings: litex: rename uart compatible
2024-08-02 03:32:21 -04:00
boards: nxp: Removing CONFIG_PINCTRL from the boards defconfig
2024-10-15 19:09:45 -04:00
drivers: serial: add NXP LPC84x UART driver
2026-06-26 14:23:10 +01:00
drivers: serial: More complete TX errata fix for MAX32
2026-02-27 21:09:31 +00:00
drivers: serial: mchp: add UART driver for sama5d2 SoC
2026-08-18 17:20:08 -04:00
drivers: uart_mcux_flexcomm: Enable as wakeup src
2025-05-30 19:40:11 +02:00
boards: nxp: Removing CONFIG_PINCTRL from the boards defconfig
2024-10-15 19:09:45 -04:00
boards: nxp: Removing CONFIG_PINCTRL from the boards defconfig
2024-10-15 19:09:45 -04:00
drivers: uart_mcux_lpuart: Handle multiple uart case
2025-10-08 17:47:00 +03:00
serial: Add error checking and interrupt support on mspm0 driver
2025-08-19 19:13:34 +02:00
drivers serial native_pty: Add DT property to connect to stdin/out
2026-01-30 06:00:04 -06:00
drivers: serial: native_tty: Add missing dependency
2026-07-31 13:22:16 -04:00
drivers: kconfig: fix typo
2025-07-01 10:58:54 -10:00
drivers: serial: nrfx_uarte: Fix case with mixed instance configuration
2026-09-01 15:19:01 +01:00
drivers: serial: nrfx_uarte: Fix case with mixed instance configuration
2026-09-01 15:19:01 +01:00
drivers: serial: ns16550: add BCM283x auxiliary UART support
2026-08-05 09:28:40 +02:00
boards: nuvoton: numaker: Drop PINCTRL from board defconfig
2024-11-20 08:23:58 -05:00
driver: serial: uart_numicro: Add interrupt driven support
2026-06-05 22:35:10 +02:00
boards: nxp: Removing CONFIG_PINCTRL from the boards defconfig
2024-10-15 19:09:45 -04:00
drivers: serial: opentitan: remove bogus depends on clause
2025-09-19 08:06:42 +02:00
drivers: serial: pl011: Enable PINCTRL conjuction with dt prop 'pinctrl-0'
2025-01-07 00:26:37 +01:00
Documentation: Update documenation for Infineon boards
2024-11-14 20:36:38 -06:00
drivers: rcar: Select CONFIG_PINCTRL
2024-11-22 17:41:02 +01:00
serial: rts5912: implement power management
2025-10-02 11:47:32 +03:00
drivers: serial: Initial SAU UART driver support for Renesas RA0 series
2026-03-02 10:48:45 +01:00
drivers: Select PINCTRL for renesas RA drivers
2024-11-06 09:59:32 -08:00
drivers: serial: Add DTC support for serial driver and implement Async API
2025-10-14 12:53:49 +03:00
driver: serial: Add support for uart interface for qemu_rx
2025-05-02 09:18:16 +02:00
drivers: serial: Add support for Renesas RZ/V2H
2025-06-04 17:00:01 +02:00
serial: add SERIAL_HAS_POST_KERNEL_INIT
2026-07-09 07:58:11 +02:00
serial: add SERIAL_HAS_POST_KERNEL_INIT
2026-07-09 07:58:11 +02:00
soc: atmel: Drop PINCTRL from Kconfig.defconfig
2024-11-04 13:43:26 -06:00
drivers: serial: sf32lb: add uart async API support
2025-12-31 11:00:08 +00:00
drivers: serial: add Shakti UART driver
2026-07-15 10:44:27 +02:00
drivers: serial: Add initial SiM3U1xx support
2024-08-26 18:51:36 +02:00
soc: sifive: sifive_freedom: Fix SoC Kconfig naming and issues
2026-01-29 17:20:11 +01:00
soc: silabs: Move Kconfig symbols for HAL selection to HAL
2025-10-22 09:03:15 +02:00
soc: silabs: Move Kconfig symbols for HAL selection to HAL
2025-10-22 09:03:15 +02:00
da1469x: Remove CONFIG_PINCTRL from all defconfig files
2024-10-08 16:57:41 +02:00
drivers: dts: ti: fix typo in "Texas Instruments" company name
2025-12-18 18:52:58 +00:00
driver: uart: stm32: Disable UART DMA before shutdown
2025-10-24 09:01:50 -07:00
drivers: serial: sy1xx add support for pinctrl
2025-01-21 19:29:14 +01:00
drivers: serial: Add serial driver for TI Tiva C Series SoC
2026-08-24 14:03:15 -07:00
soc: atmel: Drop PINCTRL from Kconfig.defconfig
2024-11-04 13:43:26 -06:00
drivers: serial: sam: update serial to support sama7g5
2025-05-28 08:14:08 +02:00
virtio: select VIRTIO
2026-07-09 07:58:11 +02:00
drivers: uart: add WCH CH5xx UART driver support
2026-08-03 15:00:06 -04:00
drivers: reset: add ch32 reset controller
2026-08-19 18:40:22 -04:00
drivers: microchip xec: select PINCTRL
2024-11-29 05:41:53 +01:00
drivers: xen: add XEN_EVENTS Kconfig option
2026-01-30 16:56:52 -06:00
Revert "drivers: uart: unify xilinx ps uart driver with cadence uart driver"
2026-07-27 06:09:38 -05:00
SOC: Remove config PINCTRL from xmc4xxx soc
2024-12-02 22:05:16 +00:00
soc: silabs: define clocks for gecko_sdk based SoCs in device tree
2026-06-25 22:18:27 +01:00
drivers: serial: esp32 lp_uart irq and optional flow control
2026-06-30 18:22:25 -04:00
drivers: espressif: enable esp32c61 in shared drivers
2026-08-27 21:23:34 +01:00
drivers: uart: align async timeout units documentation
2026-07-31 14:59:13 -04:00
drivers: serial: uart_aesc: Convert to sys_{write,read}32
2026-07-02 12:58:32 -04:00
serial: uart: change return type of irq_update to void
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart_async_rx: Avoid possible division by zero
2024-07-27 15:14:26 +03:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: uart_bee: claim DMA channels via dma_request_channel
2026-08-21 16:06:56 +02:00
drivers: bflb: extend shared drivers with BL616CL support
2026-07-08 10:01:48 +02:00
drivers: serial: Update ring_buf usage to new zero-copy API
2026-08-25 09:00:03 +02:00
drivers: serial: Update ring_buf usage to new zero-copy API
2026-08-25 09:00:03 +02:00
drivers: serial: Update ring_buf usage to new zero-copy API
2026-08-25 09:00:03 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
Revert "drivers: uart: unify xilinx ps uart driver with cadence uart driver"
2026-07-27 06:09:38 -05:00
Revert "drivers: uart: unify xilinx ps uart driver with cadence uart driver"
2026-07-27 06:09:38 -05:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: Place API into iterable section
2024-12-02 22:08:56 +00:00
drivers: serial: Add UART driver for ELAN EM32 series
2026-07-28 12:28:40 -07:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: uart: kb106x: TX empty IRQ triggering
2026-06-01 12:37:35 -04:00
serial: uart: change return type of irq_update to void
2026-05-19 17:46:51 -04:00
drivers: espressif: enable esp32c61 in shared drivers
2026-08-27 21:23:34 +01:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: gecko: fix TX interrupt storm
2026-08-14 16:19:08 -04:00
serial: Remove redundant casts in syscall handlers
2026-07-15 19:04:12 -04:00
drivers: serial: Place API into iterable section
2024-12-02 22:08:56 +00:00
drivers: serial: use Xen sched yield helper
2026-08-06 14:38:03 +02:00
include: zephyr: xen: public: remove and migrate to the zephyr-xenlib
2026-07-27 14:40:21 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: uart: infineon: Add UART IRQ update
2026-05-27 21:34:11 -04:00
drivers: serial: infineon: fix irq_is_pending to use FIFO state
2026-07-17 11:52:55 -04:00
serial: uart: change return type of irq_update to void
2026-05-19 17:46:51 -04:00
drivers: serial: remove '&' when assigning init_fn
2024-07-27 20:48:34 +03:00
drivers/serial: Add ITE UART wrapper to enable serial driver of ns16550
2025-04-08 10:48:26 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: lpc11u6x: use portable IRQ pending API
2026-08-27 22:12:29 -04:00
zephyr: bulk update to DT_NODE_HAS_STATUS_OKAY
2024-10-03 17:06:52 +01:00
drivers: serial: add NXP LPC84x UART driver
2026-06-26 14:23:10 +01:00
drivers: serial: uart_max32: Fix hw-flow-control property lookup
2026-07-22 19:06:38 +01:00
drivers: serial: mchp: add minimal drivers for G1 DBGU (Debug Unit)
2026-03-23 12:27:55 -05:00
drivers: uart_mchp_sercom_g1: fix RX error forwarding
2026-08-10 09:14:00 -07:00
drivers: serial: mchp: add UART driver for sama5d2 SoC
2026-08-18 17:20:08 -04:00
drivers: serial: mchp_xec: drain TX before suspend
2026-06-10 14:54:10 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: uart_mcux_lpuart: add PM device support
2026-09-01 11:04:22 +01:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: uart: mspm0: add fifo threshold properties
2026-08-13 06:32:32 -04:00
serial: uart_native_pty: Add runtime UART configuration stub
2026-08-14 15:27:06 +02:00
includes: remove duplicated entries in zephyr-tree
2025-12-17 13:57:38 -05:00
serial: uart_native_pty: IRQ support
2025-08-19 19:14:21 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers/serial/uart_native_tty: Set TTY to be closed on exec
2025-10-02 22:00:02 +02:00
drivers: serial: native_tty: config_get support
2025-07-24 02:47:59 -04:00
drivers: serial: fix spinlock leak in uart_neorv32
2026-06-09 07:12:43 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: nrfx_uarte: Fix case with mixed instance configuration
2026-09-01 15:19:01 +01:00
drivers: serial: ns16550: prevent DW8250 TX FIFO overflow in fifo_fill
2026-09-01 21:05:40 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
driver: serial: uart_numicro: Add interrupt driven support
2026-06-05 22:35:10 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: uart_nxp_s32_linflexd: support config via devicetree
2025-04-23 11:48:24 +02:00
drivers: serial: Place API into iterable section
2024-12-02 22:08:56 +00:00
serial: Fix PL011 error staying latched
2026-06-17 16:34:56 -04:00
drivers: serial: pl011: only declare ambiq pm action when used
2025-10-01 08:27:59 +02:00
drivers: serial: pl011: Add support for Ambiq Apollo2 SoC UART
2025-08-19 18:00:41 +02:00
drivers: serial: pl011: Add support for Ambiq Apollo510 SoC UART
2025-04-21 20:04:31 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: Place API into iterable section
2024-12-02 22:08:56 +00:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: use <> to include Zephyr headers instead of ""
2026-06-30 06:49:18 -04:00
serial: uart: change return type of irq_update to void
2026-05-19 17:46:51 -04:00
drivers: serial: renesas_ra_sau: Remove redundant irq_update
2026-06-07 19:20:06 +02:00
drivers: serial: ra_sci: Fix intermittent duplicate tx chars
2026-06-19 11:10:32 +02:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: Place device APIs in linker sections
2025-06-27 10:09:32 -05:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: uart: renesas: Map MMIO region through MMIO device APIs
2026-08-11 07:40:28 -04:00
drivers: serial: fix spinlock leak in uart_renesas_rza2m_scif
2026-06-09 10:32:08 +02:00
drivers: serial: Pico PIO UART wait for initial high
2025-01-27 21:03:48 +01:00
drivers: serial: Add RPMSG UART
2026-03-16 18:58:35 -05:00
drivers: serial: Place API into iterable section
2024-12-02 22:08:56 +00:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: uart_rzt2m: Fix baud table bounds check
2026-07-22 11:06:08 +01:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: sam0: Fix UART error assignment flip (framing/parity)
2026-07-08 09:58:06 +02:00
drivers: serial: uart_sedi: Accumulate error flags in err_check
2026-08-04 06:50:31 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: add Shakti UART driver
2026-07-15 10:44:27 +02:00
drivers: serial: uart_shell: read: Add err_check
2026-05-06 19:56:49 +02:00
drivers: Include include/zephyr/sys/clock.h
2026-07-30 07:45:05 -05:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: silabs: drop orphans eusart_silabs_ll2cfg_*()
2026-08-27 21:24:48 +01:00
drivers: serial: silabs: drop orphans uart_silabs_ll2cfg_*()
2026-08-27 21:24:48 +01:00
serial: uart: change return type of irq_update to void
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: stm32: declare few lock functions as maybe unused
2026-08-19 17:06:13 +01:00
drivers: serial: stm32: update driver for stm32 hal2
2026-03-19 11:39:33 +00:00
drivers: serial: sy1xx add support for pinctrl
2025-01-21 19:29:14 +01:00
drivers: serial: Add serial driver for TI Tiva C Series SoC
2026-08-24 14:03:15 -07:00
drivers: name the parameters in function declarations
2026-08-18 20:22:43 -04:00
drivers: uart: add WCH CH5xx UART driver support
2026-08-03 15:00:06 -04:00
drivers: reset: add ch32 reset controller
2026-08-19 18:40:22 -04:00
Revert "drivers: uart: unify xilinx ps uart driver with cadence uart driver"
2026-07-27 06:09:38 -05:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
drivers: serial: uart_xmc4xxx: Enable run time configuration
2026-01-22 14:30:26 -06:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
serial: uart: remove empty irq_update implementations
2026-05-19 17:46:51 -04:00
4f85f461e5