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5384 Commits

Author SHA1 Message Date
Xiang Xiao
f9c1117c88 eventfd: Remove the unused and private eventfd_get_minor 
since it isn't defined by Linux kernel too

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-19 01:41:11 -06:00
zhanghu6
f56aefaa41 sched_note: change uint32_t nbi_module into uint8_t array, because variables keep the same style that use uint8_t array 
sched_note: add note dump module tag definitions

NOTE_MODULE(a, b, c, d)

example:
define TEST_MODULE NOTE_MODULE('t', 'e', 's', 't')
sched_note_dump(TEST_MODULE, event, data, len);

define AUDIO_MODULE NOTE_MODULE('a', 'u', 'd', 'i')
sched_note_dump(AUDIO_MODULE, event, data, len);
 2021-12-16 04:18:17 -06:00
zhuyanlin
e43e1423d6 driver/ioexpander: add ioe_rpmsg server and client 
N/A

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-12-16 01:29:24 -06:00
Xiang Xiao
ed1e4ddfa7 libc: Add getprogname function 
defined here:
https://www.freebsd.org/cgi/man.cgi?query=getprogname&sektion=3

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-15 10:47:56 -06:00
zhanghu6
d05b9a9c79 note dump: add CONFIG_SCHED_INSTRUMENTATION_SWITCH 
1. If CONFIG_SCHED_INSTRUMENTATION_SWITCH is enabled, then these additional interfaces are expected:
        sched_note_suspend
        sched_note_resume
at the same time，If CONFIG_SMP is enabled，then expected：
        sched_note_cpu_pause
        sched_note_cpu_paused
        sched_note_cpu_resume
        sched_note_cpu_resumed
2. other board if enable SCHED_INSTRUMENTATION，SCHED_INSTRUMENTATION_SWITCH to defconfig.
 2021-12-15 07:07:00 -06:00
Petro Karashchenko
6c255f2d07 drivers/analog: add mcp48xx dac support 
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
 2021-12-15 07:02:56 -06:00
Petro Karashchenko
3b3cebdd3e typo: fix type for word "instance" 
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
 2021-12-14 06:39:34 -06:00
Xiang Xiao
69468b700d libc: Move syslog_stream from nuttx/streams.h to drivers/syslog/syslog.h 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-14 00:51:59 -06:00
zhanghu6
a32d14cb9c sched note trace: and note dump 
note_type NOTE_DUMP_STRING API:
sched_note_string
sched_note_vprintf
sched_note_printf

note_type NOTE_DUMP_BINARY API:
sched_note_dump
sched_note_vbprintf
sched_note_bprintf
 2021-12-13 21:21:22 -06:00
ligd
166a9210ca wqueue: update wqueue to support using wqueue before wqueue start 
Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-12-13 21:16:25 -06:00
Petro Karashchenko
af614ac77d tls: restore C89 compatibility for TLS 
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
 2021-12-13 21:14:53 -06:00
ligd
5b369c5cec libs/lbc: remove CHAR_BIT = 16 support 
For CEVA platform CHAR_BIT is 16, and will do lots of extra work
when use IPC.
We will not support this platform anymore, so remove all the b2c operations.

Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-12-13 11:08:28 -06:00
chao.an
d20bd62e08 libc/allsyms: Load all symbols for debugging 
let the nuttx print out symbolic crash information and
symbolic stack backtraces. This increases the size of the nuttx
somewhat, as all symbols have to be loaded into the nuttx image.

Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-12-13 08:31:13 -06:00
Xiang Xiao
1af8cd4de8 sched: Move argv from tcb_s to task_info_s 
argv is allocated from stack and then belong to userspace,
so task_info_s is a best location to hold this information.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-11 10:08:53 -06:00
Jari van Ewijk
2e47ef32cf GPIO driver: register all pintypes as generic /dev/gpioN 2021-12-09 23:55:12 -06:00
Xiang Xiao
6357523892 arch: Add _wchar_t typedef like other basic types 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-09 16:57:23 +09:00
Huang Qi
58e0781e2e arch/arm: Implement TLS support 
Signed-off-by: Huang Qi <no1wudi@qq.com>
 2021-12-07 23:31:41 -06:00
zhuyanlin
3e8a3c9cc2 driver:regulator: add delay feature 
N/A
 2021-12-07 23:29:05 -06:00
zhuyanlin
b7db4304d6 driver/power: add gpio regulator 
N/A

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-12-07 23:29:05 -06:00
zhuyanlin
eed6510202 driver:power:add regulator remote proc 
N/A

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-12-07 23:29:05 -06:00
zhuyanlin
c8f1a9e430 driver:power:add regulator framework 
N/A

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-12-07 23:29:05 -06:00
anjiahao
f9570810c0 libc/misc/err.c:add err.c to libc 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-12-07 04:01:27 -08:00
zhuyanlin
565964a12f driver: add clk framework 
N/A

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-12-07 01:35:45 -06:00
Xiang Xiao
a6eb6df688 libc/getopt: Move struct getopt_s to include/nuttx/tls.h 
and remove include/nuttx/lib/getopt.h

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-06 06:30:16 -08:00
zhuyanlin
043d193fff tcbinfo:sched: fix build break 
Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-12-06 00:47:58 -06:00
chao.an
437a30d117 arch/tcbinfo: fix build break if task name disabled 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-12-06 00:47:58 -06:00
Xiang Xiao
a0990ee416 arch: Remove the duplicated up_tls_info implementation 
Define up_tls_info in arch/arch.h directly if the general one isn't suitable

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-12-05 20:59:53 -06:00
Petro Karashchenko
e71b66c792 drivers/mtd: add MTD null driver support 
- fix memory leak during RAM MTD initialization
- fix calculations for FILE MTD device with customized
  block and erase sizes

Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
 2021-12-05 03:11:02 -06:00
ligd
985cc4fc6d hosfs_rpmsg: merge hostfs_rpmsg to rpmsgfs 
Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-12-04 01:04:18 -06:00
futerigele
06fc3eb1c3 input/touchscreen: added touchscreen gesture 
added touchscreen gesture

Signed-off-by: futerigele <futerigele@xiaomi.com>
 2021-12-03 01:20:02 -06:00
baggio63446333
917f1a64ad libdsp: Fix compile error with the standard math library 
The libdsp uses M_PI_F and M_PI_2_F which are defined only in the NuttX
math library. Fix an compile error when CONFIG_LIBM is disabled and the
other math library is used.
 2021-12-02 12:49:27 +01:00
buyuer
b9345c64c8 Add cinttypes header file for mini-cxxlib. 
Signed-off-by: buyuer <dingddding@163.com>
 2021-12-01 06:51:51 -06:00
Sebastien Lorquet
437424d234 Support multiple SST26 devices on the same spi bus 2021-11-30 18:45:27 +01:00
Simon Filgis
46c36e2603 c++ style comment 2021-11-30 10:44:40 -06:00
Simon Filgis
0e327b18c0 added special registers of KSZ8061 ethernet phy 2021-11-30 10:44:40 -06:00
anjiahao
c2bcef4db8 include/stdio:add setlinebuf marco 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-11-29 11:18:36 -06:00
Xiang Xiao
54eabf9616 libc: Add mknod implementation 
https://pubs.opengroup.org/onlinepubs/007904875/functions/mknod.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-28 23:31:16 +01:00
songlinzhang
22df553443 net/arp: clean the arp table when netdev carrier off 
Fix the arp address changed if netdev renew, since the
arp table should be cleared when the netdev carrier off

Signed-off-by: songlinzhang <songlinzhang@xiaomi.com>
 2021-11-27 06:19:50 -06:00
anjiahao
4db9513658 inculude/netinet:add net mask define 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-11-27 06:19:10 -06:00
anjiahao
80d32edbe1 libc/str:add strlcat to libc 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-11-26 15:24:35 -03:00
Petro Karashchenko
0d9425676d arch/arm/src/samv7: add flash progmem erasestate ioctl support 
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
 2021-11-26 14:55:34 -03:00
Xiang Xiao
c1cb429a98 libc/hex2bin: Handle the line ending(\r, \n and \r\n) dynamically 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-26 11:55:00 -03:00
chao.an
6cd850b0e6 net/icmp/v6: add ICMP Destination Unreachable code definitions 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-11-26 08:47:54 -06:00
zhangguoliang
b16eea4f14 feat: charger: add operation to get out voltage 
Signed-off-by: zhangguoliang <zhangguoliang3@xiaomi.com>
 2021-11-26 11:16:53 +01:00
weizhifang
e20becd91b feature: charge: add add chipid ioctl api 
1.add chipid ioctl api to battery monitor code
2.add chipid itctl api to battery charger code
3.add chipid itctl api to battery gauge code

Signed-off-by: weizhifang <weizhifang@xiaomi.com>
 2021-11-26 11:16:53 +01:00
anjiahao
624b8d0776 add MAXHOSTNAMELEN in headfile 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-11-24 22:49:09 -06:00
anjiahao
41c3b42468 change /dev/syslog & /dev/ramlog for unix standard 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-11-24 05:19:46 -06:00
chao.an
e228434cea libs/libc: add interface to support output stream as buffer style 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-11-23 21:00:43 -06:00
chao.an
7cbb8da692 binfmt/elf: add bare metal coredump support 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-11-23 20:48:00 -06:00
chao.an
f33c46af21 elf: add elf define of Note Section 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-11-23 20:34:56 +09:00
Xiang Xiao
91f616e824 libc/pthread: Implement pthread_atfork 
fork isn't supported yet, so the dummy implementation is enough.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-22 15:11:48 -03:00
Xiang Xiao
d2b693a204 sched: Move g_tcbinfo to include/nuttx/sched.h 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-22 14:59:48 -03:00
songnannan
83668c7091 fix(sensor): align for selftest interface define. 
Align for selftest interface in struct sensor_ops_s

Signed-off-by: songnannan <songnannan@xiaomi.com>
 2021-11-19 11:55:40 +01:00
songnannan
550d2bff32 feature: sensor: add set calibration interface for sensor driver. 
Add standard sensor interface for setting calibartiion value.

Signed-off-by: songnannan <songnannan@xiaomi.com>
 2021-11-19 11:55:40 +01:00
Xiang Xiao
a29ee19af4 driver/motor: Remove the unnecessary critical section operation 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2021-11-18 19:27:07 -06:00
Jiuzhu Dong
c0c1e46c5f driver/motor: add upperhalf structure 
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2021-11-18 19:27:07 -06:00
ligd
b5d1ec28de mm: do kmm_checkcorruption in IRQ when TCB_FLAG_DEBUG_CHECK set 
Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-11-17 09:55:19 -06:00
buyuer
fa90a3dfd4 Optimized GPS sensor and add gps satellite sensor. 
Signed-off-by: buyuer <dingddding@163.com>
 2021-11-17 08:59:40 -06:00
futerigele
17b67093cb input/touchscreen: added time stamp for touchscreen event 
added time stamp for touchscreen event

Signed-off-by: futerigele <futerigele@xiaomi.com>
 2021-11-17 01:47:56 -06:00
songnannan
1799994f2c feature: sensor: Add sensor type ots. 
Add ots sensor type for ots sensor.

Signed-off-by: songnannan <songnannan@xiaomi.com>
 2021-11-16 14:51:57 -03:00
Andres Sanchez
064f6c8c55 add MTDIOCTL_PROGMEM_ERASESTATE support 
Signed-off-by: Andres Sanchez <tito97_sp@hotmail.com>

solve style check errors.
 2021-11-16 14:45:03 -03:00
Alin Jerpelea
33383a09dd include: Haltian Ltd: update licenses to Apache 
Gregory Nutt has submitted the SGA
Haltian Ltd has submitted the SGA

as a result we can migrate the licenses to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-11-15 06:49:32 -06:00
Xiang Xiao
bec1b0bc92 Revert "libc: Implement fesetround & fegetround for arm" 
Since the toolchain provide the implementation now.
This reverts commit fe992a5b6c.
 2021-11-10 14:35:53 -03:00
Xiang Xiao
69d35455c7 clock.h: Remove the unnecessary L from macro 
It's safe for the number <= 32767 since C standard require int at least 16bit

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-10 14:32:16 -03:00
zhuyanlin
012bd1494c arch:debug: add struct for task aware debug. 
When enable DEBUG_TCBINFO config, a global struct will
provide, then debuggers can aware nuttx task infomation.

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-11-10 14:31:10 -03:00
Gustavo Henrique Nihei
5dfb2713f6 include: Add __socklen_t_defined for compatibility to other C libraries 
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
 2021-11-09 08:19:27 -06:00
futerigele
7381245159 input/touchscreen: separate the interface for user interaction 
Separate the interface for user interaction, touch upper half
provides the interface uniformly.

Signed-off-by: futerigele <futerigele@xiaomi.com>
 2021-11-08 21:56:03 -06:00
raiden00pl
bf23abfbd5 drivers/qencoder: add an interface to configure the encoder index pin position 2021-11-07 03:52:48 -06:00
David Sidrane
040a04241e drivers/spi:Define SPI_~CS~_DELAY_CONTROL to support other delays 2021-11-06 05:14:05 -05:00
ligd
00ef4fca51 rpmgs_socket: set RPMSG_SOCKET_NAME_SIZE to 16 for handing prefix 
Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-11-04 13:29:51 -05:00
Jukka Laitinen
c79d2067c7 Move timespec calculations from sched into libc/sched 
Allow using these functions also outside sched, where systick
related calculations are performed

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
 2021-11-04 13:19:01 -05:00
ligd
131e8dc7e7 socket.h: set SOMAXCONN default value to 8 
Signed-off-by: ligd <liguiding1@xiaomi.com>
 2021-11-01 13:52:10 -05:00
Xiang Xiao
aec01e96fa libc: Remove the empty lib_initialize 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-11-01 11:03:02 -03:00
Jiuzhu Dong
1ed4118378 power/battery: add baterr, batinfo, batwarn for debug log 
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2021-10-26 13:59:42 -03:00
zhuyanlin
b4ea11f7b1 arch:cache: add lock feature for cache 
Some architectures support lock & unlock cache feature.

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-10-22 13:31:32 -03:00
anjiahao
0aa14f832d mq_open: add long file name check and parameter check 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-10-21 11:01:45 -03:00
Jiuzhu Dong
f1f0bcc521 driver/sensor: support new sensor type:ECG,PPG,Imdepance 
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2021-10-20 09:55:18 -05:00
zhangguoliang
12b2b7c240 fix: charger: change the operations of battery ioctl to common 
Almost all charger chip need the same oprations, which was not
appropriate only for BQ2429X. Therefore, open the operations to
all charger chips.

Signed-off-by: zhangguoliang <zhangguoliang3@xiaomi.com>
 2021-10-20 09:52:21 +02:00
weizhifang
2a6673bcdd feature: charge: modify battery_gauge code 
add temperature and current ioctl api

Signed-off-by: weizhifang <weizhifang@xiaomi.com>
 2021-10-20 09:52:11 +02:00
Alexander Lunev
6bdc737f5c bcm43xxx: supported high-speed timing mode with a clock rate up to 50MHz 2021-10-18 21:58:03 -05:00
Jari van Ewijk
b1d5eff52d Userled driver: Add option to check actual pin state with getall 2021-10-18 12:30:18 -07:00
Xiang Xiao
643e34efde sdio: Update the defintion to the latest spec 
and correct the comment:
https://www.sdcard.org/downloads/pls/
https://www.jedec.org/standards-documents/technology-focus-areas/flash-memory-ssds-ufs-emmc/e-mmc

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-10-17 06:29:13 -03:00
Xiang Xiao
8b67944c75 sched: Remove pidhash_s and move ticks to tcb_s 
simplify the code logic and reduce memory a little bit

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-10-16 06:19:17 -03:00
Juha Niskanen
fc1ac6e3e0 include/nuttx/net/netconfig.h: add MSS values for usrsock 
Signed-off-by: Juha Niskanen <juha.niskanen@haltian.com>
 2021-10-15 06:18:27 -07:00
anjiahao
1623848720 battery_monitor:add poll support 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-10-11 05:33:22 -07:00
anjiahao
ef7c61ae2d battery_gauge:add poll support 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-10-11 05:33:22 -07:00
anjiahao
0d95d6fa45 battery_charger:add poll support 
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
 2021-10-11 05:33:22 -07:00
Jiuzhu Dong
9bc913abef wd_start: use sclock_t type replace int 
when enable SYSTEM_TIME64, tick may exceed the int32 range
example:
pthread_cond_clockwait
        ---->clock_abstime2ticks
                    ---->wd_start

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2021-10-10 19:59:57 -07:00
Jiuzhu Dong
5ee16ee684 driver/sensor: support sensor_ops: selftest 
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
 2021-10-10 08:28:49 -03:00
Jari van Ewijk
20bf309939 Userled driver: Rename functions to make it more consistent and avoid confusion 2021-10-05 06:08:10 -07:00
liushuai25
6c374fc06c feat: driver: support double buffer for display 
add pan display for fb driver.

reference links:
https://github.com/torvalds/linux/blob/master/drivers/video/fbdev/core/fbmem.c
https://github.com/torvalds/linux/blob/master/drivers/video/fbdev/goldfishfb.c

Signed-off-by: liushuai25 <liushuai25@xiaomi.com>

Update include/nuttx/video/fb.h

Co-authored-by: Gustavo Henrique Nihei <38959758+gustavonihei@users.noreply.github.com>

Update include/nuttx/video/fb.h

Co-authored-by: Gustavo Henrique Nihei <38959758+gustavonihei@users.noreply.github.com>
 2021-09-30 09:07:48 -03:00
Xiang Xiao
77bc1d1bdf power/battery: Move the enumurate to the common place 
so the userspace program can handle the different battery driver equally

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
 2021-09-30 14:58:42 +09:00
Alin Jerpelea
b0ddc6e2c5 include: Omni Hoverboards: update licenses to Apache 
Gregory Nutt has submitted the SGA
Omni Hoverboards has submitted the SGA
Paul Alexander Patience  has submitted the ICLA

as a result we can migrate the licenses to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
 2021-09-28 04:37:38 -07:00
futerigele
a264fd9541 input/touch: add io command for touch firmware version 
Signed-off-by: futerigele <futerigele@xiaomi.com>
 2021-09-27 18:17:17 -07:00
FASTSHIFT
649f99ce30 libc/misc: add lib_glob. 
Signed-off-by: FASTSHIFT <vifextech@foxmail.com>
 2021-09-25 07:54:39 -03:00
zhuyanlin
a41f92d1f6 sched:tcb_s:rearrange sched_priority/int_priority to word align 
As pid_t is uint16_t,this could save space for many archs.

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
 2021-09-23 23:08:51 -07:00
chao.an
c132e5bed4 net/tcp: sanity check for the listen address 
Signed-off-by: chao.an <anchao@xiaomi.com>
 2021-09-23 23:07:57 -07:00
FASTSHIFT
f3477a86d2 libc/string: add lib_strchrnul. 2021-09-22 09:20:06 -03:00
iceaway
beba1056a8 userleds: add missing include (stdbool.h) 
Would not compile without stdbool.h included (uses the bool type in
the header file)
 2021-09-20 02:01:47 -07:00
Alexander Lunev
36fbedcbfc net/devif/devif_callback.c: corrected the connection event list to work as FIFO instead of LIFO. 
In case of enabled packet forwarding mode, packets were forwarded in a reverse order
because of LIFO behavior of the connection event list.
The issue exposed only during high network traffic. Thus the event list started to grow
that resulted in changing the order of packets inside of groups of several packets
like the following: 3, 2, 1, 6, 5, 4, 8, 7 etc.

Remarks concerning the connection event list implementation:
* Now the queue (list) is FIFO as it should be.
* The list is singly linked.
* The list has a head pointer (inside of outer net_driver_s structure),
  and a tail pointer is added into outer net_driver_s structure.
* The list item is devif_callback_s structure.
  It still has two pointers to two different list chains (*nxtconn and *nxtdev).
* As before the first argument (*dev) of the list functions can be NULL,
  while the other argument (*list) is effective (not NULL).
* An extra (*tail) argument is added to devif_callback_alloc()
  and devif_conn_callback_free() functions.
* devif_callback_alloc() time complexity is O(1) (i.e. O(n) to fill the whole list).
* devif_callback_free() time complexity is O(n) (i.e. O(n^2) to empty the whole list).
* devif_conn_event() time complexity is O(n).
 2021-09-18 21:01:39 -05:00