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nuttx/drivers
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Ricard Rosson a2b3cbe9bc drivers/usbdev: re-assert soft connect in cdcecm/cdcncm disconnect() 
The USB device controller drivers invoke CLASS_DISCONNECT() on every
USB bus reset, and a bus reset is the first step of normal host
enumeration.  Every other class driver (cdcacm, usbmsc, rndis)
re-asserts DEV_CONNECT() at the end of its disconnect() handler so
that the device remains attached; cdcecm and cdcncm did not, so on
controllers that soft-disconnect around bus reset (e.g. rp2040, which
drops the pull-up in its bus-reset handler) a standalone CDC-ECM or
CDC-NCM device is left soft-disconnected by the first bus reset and
never enumerates on the host.

Mirror the cdcacm behavior and perform the soft connect in the
disconnect() methods, unless part of a composite device (composite.c
already re-connects in its own disconnect handler).

Fixes the standalone CDC-ECM case of issue #15880.

Validated on raspberrypi-pico (RP2040): with this change a standalone
CONFIG_NET_CDCECM device that previously never appeared on the host
enumerates via cdc_ether and pings with 0% loss.  cdcncm has the
identical defect and receives the identical fix.

Signed-off-by: Ricard Rosson <ricard@groundbits.com>
Co-authored-by: Xiang Xiao <xiaoxiang781216@gmail.com>
Assisted-by: Claude (Anthropic Claude Code)
2026-08-04 09:35:20 +08:00
..
1wire drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
aie drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
analog drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
audio drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
bch drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
can drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
clk !include/fcntl.h: align open flags with Linux values 2026-07-03 10:33:47 +08:00
contactless drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
coresight drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
crypto drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
devicetree include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
dma drivers: migrate to SPDX identifier 2024-11-06 18:02:25 +08:00
dummy drivers: migrate to SPDX identifier 2024-11-06 18:02:25 +08:00
eeprom drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
efuse drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
i2c drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
i2s drivers/efuse/efuse: Drivers Registered With World Write Permissions(Part 1) 2026-08-03 17:23:22 +08:00
i3c drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
input drivers/input: partial fix of indistinguishable ASCII and special keycodes 2026-08-04 09:33:53 +08:00
ioexpander gpio: Fix GPIO expanders warnings 2026-08-04 09:34:52 +08:00
ipcc drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
lcd drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
leds drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
loop drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
math drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
misc libs/libc: Fix divide-by-zero in stat() with large filesystem block sizes 2026-08-03 20:58:39 +08:00
mmcsd drivers/mmcsd: fix eMMC bus width switch sequencing 2026-08-03 22:20:52 +08:00
modem drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
motor drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
mtd libs/libc: Fix divide-by-zero in stat() with large filesystem block sizes 2026-08-03 20:58:39 +08:00
net drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
note drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
pci drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
pinctrl drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
pipes drivers/: Multiple Drivers Are Registered With World Writable Part 3 2026-08-03 17:23:22 +08:00
power drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
rc drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
regmap include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
reset include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
rf drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
rpmsg drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
rptun drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
segger drivers/segger: Download systemview from NuttX Mirror Repo 2026-06-10 22:40:26 +08:00
sensors drivers/: Multiple Drivers Are Registered With World Writable Part 3 2026-08-03 17:23:22 +08:00
serial drivers/: Multiple Drivers Are Registered With World Writable Part 3 2026-08-03 17:23:22 +08:00
spi drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
syslog drivers/syslog: fix syslog_write() returning -EIO on every write 2026-08-04 00:36:09 +08:00
thermal include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
timers drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
usbdev drivers/usbdev: re-assert soft connect in cdcecm/cdcncm disconnect() 2026-08-04 09:35:20 +08:00
usbhost libs/libc: Fix divide-by-zero in stat() with large filesystem block sizes 2026-08-03 20:58:39 +08:00
usbmisc drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
usbmonitor include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
usrsock drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
vhost include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
video drivers/video: zero message on MIPI DSI driver 2026-08-03 23:16:13 +08:00
virtio drivers/input: partial fix of indistinguishable ASCII and special keycodes 2026-08-04 09:33:53 +08:00
wireless drivers/: Multiple Drivers Are Registered With World Writable - Part 2 2026-08-03 17:23:22 +08:00
.gitignore
CMakeLists.txt drivers: migrate to SPDX identifier 2024-11-06 18:02:25 +08:00
drivers_initialize.c serial/uart_rpmsg: add _raw version of driver 2026-02-23 09:19:57 -03:00
Kconfig espressif/rmt: replace rmtchar with arch-specific lirc adapter 2026-04-04 11:18:32 -03:00
Makefile tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-08-04 00:36:32 +08:00