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linux-serial-test: remove upstreamed patches and bump SRCREV

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Remove patches that have been integrated upstream:
- Serial setup handling respecting user intent
- POSIX-compliant termios baud rate configuration
- Type safety and error handling improvements

$ git --no-pager log --oneline 1a81f3c7be08..e3461097252e
e3461097252e Merge pull request #61 from MaxKrummenacher/master
988deaad893b Merge pull request #69 from ivitro/fix/termios-use-cfset-speed
03aae5517cda Merge pull request #68 from ivitro/fix-serial-setup-handling
e124c19e97e9 Fix -Wstringop-overflow warning in process_write_data
363f569a531f Use cfsetispeed/cfsetospeed for baud configuration
9012c3366433 Fix serial setup handling to respect user intent
8a8aba302529 linux-serial-test.c: fix potential hang in while loop
8a5709984363 linux-serial-test.c: fix returned error code

Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Vitor Soares 2025-11-07 14:57:11 +00:00 committed by Khem Raj
parent 6025c3c73a
commit e982d3a96c
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GPG Key ID: BB053355919D3314
4 changed files with 2 additions and 261 deletions
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133
meta-oe/recipes-test/linux-serial-test/files/0001-Fix-serial-setup-handling-to-respect-user-intent.patch
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@ -1,133 +0,0 @@
From 8d4f9a1a77f59eb3ed79267f58fac949835aebfc Mon Sep 17 00:00:00 2001
From: Vitor Soares <vitor.soares@toradex.com>
Date: Thu, 30 Oct 2025 14:52:57 +0000
Subject: [PATCH] Fix serial setup handling to respect user intent
Commit 77320571e63c ("Check if rs485 is already configured on the port")
attempted to respect RS485 settings already configured on the port (e.g.
via Device Tree). However, it unintentionally ignored user input,
causing issues such as:
- Inability to change delay settings
- Failure to explicitly disable RS485
- Broken UART loopback and RTS/CTS flow-control tests when RS485 was
pre-enabled
The original intent was valid for existing configurations (bare -q), but
the tool should prioritize user intent, especially in testing scenarios.
This update restores predictable, user-driven behavior:
- RS485 can be explicitly enabled, disabled, or reconfigured
- Current configurations are respected when appropriate
Upstream-Status: Submitted [https://github.com/cbrake/linux-serial-test/pull/68]
Fixes: 77320571e63c ("Check if rs485 is already configured on the port")
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
---
linux-serial-test.c | 48 ++++++++++++++++++++++++++++-----------------
1 file changed, 30 insertions(+), 18 deletions(-)
diff --git a/linux-serial-test.c b/linux-serial-test.c
index 294f53882570..119bf58e663d 100644
--- a/linux-serial-test.c
+++ b/linux-serial-test.c
@@ -60,6 +60,7 @@ int _cl_no_tx_param = 0;
int _cl_rx_delay = 0;
int _cl_tx_delay = 0;
int _cl_tx_bytes = 0;
+int _cl_rs485 = 0;
int _cl_rs485_after_delay = -1;
int _cl_rs485_before_delay = 0;
int _cl_rs485_rts_after_send = 0;
@@ -315,7 +316,9 @@ static void display_help(void)
" -q, --rs485 Enable RS485 direction control on port, and set delay from when TX is\n"
" finished and RS485 driver enable is de-asserted. Delay is specified in\n"
" bit times. To optionally specify a delay from when the driver is enabled\n"
- " to start of TX use 'after_delay.before_delay' (-q 1.1)\n"
+ " to start of TX use 'after_delay.before_delay' (-q 1.1). If no value is\n"
+ " given, delay defaults to 0. Existing RS485 configuration is respected if\n"
+ " already enabled.\n"
" -Q, --rs485_rts Deassert RTS on send, assert after send. Omitting -Q inverts this logic.\n"
" -m, --no-modem Do not clobber against any modem lines.\n"
" -o, --tx-time Number of seconds to transmit for (defaults to 0, meaning no limit)\n"
@@ -335,7 +338,7 @@ static void process_options(int argc, char * argv[])
{
for (;;) {
int option_index = 0;
- static const char *short_options = "hb:p:d:D:TRsSy:z:cBertq:Qml:a:w:o:i:P:kKAI:O:W:Znf";
+ static const char *short_options = "hb:p:d:D:TRsSy:z:cBertq::Qml:a:w:o:i:P:kKAI:O:W:Znf";
static const struct option long_options[] = {
{"help", no_argument, 0, 0},
{"baud", required_argument, 0, 'b'},
@@ -359,7 +362,7 @@ static void process_options(int argc, char * argv[])
{"rx-delay", required_argument, 0, 'l'},
{"tx-delay", required_argument, 0, 'a'},
{"tx-bytes", required_argument, 0, 'w'},
- {"rs485", required_argument, 0, 'q'},
+ {"rs485", optional_argument, 0, 'q'},
{"rs485_rts", no_argument, 0, 'Q'},
{"no-modem", no_argument, 0, 'm'},
{"tx-time", required_argument, 0, 'o'},
@@ -467,8 +470,12 @@ static void process_options(int argc, char * argv[])
}
case 'q': {
char *endptr;
- _cl_rs485_after_delay = strtol(optarg, &endptr, 0);
- _cl_rs485_before_delay = strtol(endptr+1, &endptr, 0);
+ _cl_rs485 = 1;
+
+ if (optarg) {
+ _cl_rs485_after_delay = strtol(optarg, &endptr, 0);
+ _cl_rs485_before_delay = strtol(endptr+1, &endptr, 0);
+ }
break;
}
case 'Q':
@@ -707,15 +714,20 @@ static void setup_serial_port(int baud)
/* enable/disable rs485 direction control, first check if RS485 is supported */
if(ioctl(_fd, TIOCGRS485, &rs485) < 0) {
- if (_cl_rs485_after_delay >= 0) {
+ if (_cl_rs485) {
/* error could be because hardware is missing rs485 support so only print when actually trying to activate it */
perror("Error getting RS-485 mode");
}
} else {
- if (rs485.flags & SER_RS485_ENABLED) {
- printf("RS485 already enabled on port, ignoring delays if set\n");
- } else {
- if (_cl_rs485_after_delay >= 0) {
+ if (_cl_rs485) {
+ /* Skip reconfiguration if already enabled with default delays */
+ if ((_cl_rs485_after_delay < 0) && (rs485.flags & SER_RS485_ENABLED)) {
+ printf("RS485 already enabled on port with default settings\n");
+ } else {
+ /* Default to 0 if not specified */
+ if (_cl_rs485_after_delay < 0) {
+ _cl_rs485_after_delay = 0;
+ }
/* enable RS485 */
rs485.flags |= SER_RS485_ENABLED | SER_RS485_RX_DURING_TX |
(_cl_rs485_rts_after_send ? SER_RS485_RTS_AFTER_SEND : SER_RS485_RTS_ON_SEND);
@@ -725,14 +737,14 @@ static void setup_serial_port(int baud)
if(ioctl(_fd, TIOCSRS485, &rs485) < 0) {
perror("Error setting RS-485 mode");
}
- } else {
- /* disable RS485 */
- rs485.flags &= ~(SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND);
- rs485.delay_rts_after_send = 0;
- rs485.delay_rts_before_send = 0;
- if(ioctl(_fd, TIOCSRS485, &rs485) < 0) {
- perror("Error setting RS-232 mode");
- }
+ }
+ } else {
+ /* disable RS485 */
+ rs485.flags &= ~(SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND | SER_RS485_RTS_AFTER_SEND);
+ rs485.delay_rts_after_send = 0;
+ rs485.delay_rts_before_send = 0;
+ if(ioctl(_fd, TIOCSRS485, &rs485) < 0) {
+ perror("Error setting RS-232 mode");
}
}
}

62
meta-oe/recipes-test/linux-serial-test/files/0001-linux-serial-test.c-fix-returned-error-code.patch
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@ -1,62 +0,0 @@
From 1add8f3d228368665c3abd452640b91a86f41976 Mon Sep 17 00:00:00 2001
From: Max Krummenacher <max.krummenacher@toradex.com>
Date: Mon, 4 Aug 2025 14:57:22 +0200
Subject: [PATCH 1/2] linux-serial-test.c: fix returned error code
_cl_no_rx/_cl_no_rx are true in two cases, first when the relevant
command line paramter is set and second when a rx or tx time is set
and that time expired.
This fixes the second case in a loopback test. With the change the
application now correctly returns 125 if the number of written and
read chars differ.
E.g. `./linux-serial-test -o2 -i3 -b 115200 -p /dev/ttyS1 ; echo $?`
returns now 0 with a loopback and 125 without, before it returned 0
with or without a loopback.
Upstream-Status: Submitted [https://github.com/cbrake/linux-serial-test/pull/61/]
Fixes: 4e57f58c58ae ("compute error count valid when no_tx or no_rx")
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
---
linux-serial-test.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/linux-serial-test.c b/linux-serial-test.c
index d8f66c16c72f..c2c8882d601b 100644
--- a/linux-serial-test.c
+++ b/linux-serial-test.c
@@ -55,6 +55,8 @@ int _cl_loopback = 0;
int _cl_dump_err = 0;
int _cl_no_rx = 0;
int _cl_no_tx = 0;
+int _cl_no_rx_param = 0;
+int _cl_no_tx_param = 0;
int _cl_rx_delay = 0;
int _cl_tx_delay = 0;
int _cl_tx_bytes = 0;
@@ -442,9 +444,11 @@ static void process_options(int argc, char * argv[])
break;
case 'r':
_cl_no_rx = 1;
+ _cl_no_rx_param = 1;
break;
case 't':
_cl_no_tx = 1;
+ _cl_no_tx_param = 1;
break;
case 'l': {
char *endptr;
@@ -745,7 +749,7 @@ static int diff_s(const struct timespec *t1, const struct timespec *t2)
static int compute_error_count(void)
{
long long int result;
- if (_cl_no_rx == 1 || _cl_no_tx == 1)
+ if (_cl_no_rx_param == 1 || _cl_no_tx_param == 1)
result = _error_count;
else
result = llabs(_write_count - _read_count) + _error_count;
--
2.43.0

60
meta-oe/recipes-test/linux-serial-test/files/0002-linux-serial-test.c-fix-potential-hang-in-while-loop.patch
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@ -1,60 +0,0 @@
From 9cf6c1d80c2f159dbb69967fbe934bf6de73c9e8 Mon Sep 17 00:00:00 2001
From: Max Krummenacher <max.krummenacher@toradex.com>
Date: Tue, 5 Aug 2025 09:35:06 +0200
Subject: [PATCH 2/2] linux-serial-test.c: fix potential hang in while loop
process_read_data() assumes that we can always wait for reception
of 1024 chars. However that is not true if one sets the number of
chars with the '-w' cmdline parameter or chars are lost. Maybe there
are other reasons.
Replace the magic number of 1024 by calculating the number of expected
chars from _cl_tx_bytes.
Brake a possible infinite while loop by adding a timeout to the loop
calculated from the expected chars times chartime.
Upstream-Status: Submitted [https://github.com/cbrake/linux-serial-test/pull/61/]
Fixes: 7fd1057f8a95 ("Add loop to read all data in rcv buffer")
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
---
linux-serial-test.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/linux-serial-test.c b/linux-serial-test.c
index c2c8882d601b..294f53882570 100644
--- a/linux-serial-test.c
+++ b/linux-serial-test.c
@@ -543,8 +543,13 @@ static unsigned char next_count_value(unsigned char c)
static void process_read_data(void)
{
unsigned char rb[1024];
+ int loopcounter = 0;
int actual_read_count = 0;
- while (actual_read_count < 1024) {
+ int expected_read_count = _cl_tx_bytes == 0 ? 1024 : _cl_tx_bytes;
+ /* time for one char at current baudrate in us */
+ int chartime = 1000000 * (8 + _cl_parity + 1 + _cl_2_stop_bit) / _cl_baud;
+
+ while (actual_read_count < expected_read_count) {
int c = read(_fd, &rb, sizeof(rb));
if (c > 0) {
if (_cl_rx_dump) {
@@ -577,7 +582,12 @@ static void process_read_data(void)
if (errno != EAGAIN) {
perror("read failed");
}
- continue; // Retry the read
+
+ if (loopcounter++ < expected_read_count) {
+ usleep(chartime);
+ continue; // Retry the read
+ }
+ break;
} else {
break;
}
--
2.43.0

8
meta-oe/recipes-test/linux-serial-test/linux-serial-test_git.bb
View File

@ -3,13 +3,9 @@ HOMEPAGE = "https://github.com/cbrake/linux-serial-test"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://LICENSES/MIT;md5=544799d0b492f119fa04641d1b8868ed"
SRC_URI = "git://github.com/cbrake/linux-serial-test.git;protocol=https;branch=master \
file://0001-linux-serial-test.c-fix-returned-error-code.patch \
file://0002-linux-serial-test.c-fix-potential-hang-in-while-loop.patch \
file://0001-Fix-serial-setup-handling-to-respect-user-intent.patch \
"
SRC_URI = "git://github.com/cbrake/linux-serial-test.git;protocol=https;branch=master"
PV = "0+git"
SRCREV = "1a81f3c7be086ee01a9be8589a606426276c86d5"
SRCREV = "e3461097252e51fc527839884e77449cfd976701"
# Upstream repo does not tag
UPSTREAM_CHECK_COMMITS = "1"