[rpms/pyserial] rawhide: Fix mips and pps operation (cherry-picked from upstream)

[Paul Komkoff <i@stingr.net>]

            A new commit has been pushed.

            Repo   : rpms/pyserial
            Branch : rawhide
            Commit : 1f12fd89328412a99f082ac10487c9ba936d977c
            Author : Paul Komkoff <i@stingr.net>
            Date   : 2026-06-25T19:06:19+01:00
            Stats  : +140/-1 in 2 file(s)
            URL    : https://src.fedoraproject.org/rpms/pyserial/c/1f12fd89328412a99f082ac10487c9ba936d977c?branch=rawhide

            Log:
            Fix mips and pps operation (cherry-picked from upstream)

This includes:

- Add support for setting a custom baudrate on the MIPS platform
- Adjust architectures detection for compatibility with MIPS/MIPS64
- Fix setting custom baudrates on linux/ppc{64,64le} machines
- serial_posix: Fix custom baud rates for glibc >=2.42; solves #805

Thanks to Dan Horák <dan@danny.cz> for cherry-picking the important bits.

---
diff --git a/0001-cherry-picked-fixes-from-upstream.patch b/0001-cherry-picked-fixes-from-upstream.patch
new file mode 100644
index 0000000..8889de4
--- /dev/null
+++ b/0001-cherry-picked-fixes-from-upstream.patch
@@ -0,0 +1,138 @@
+commit 5ce1773fdce16a0b184363695a7d7d9483c4da0c
+Author: ckielstra <c.kielstra@ultimaker.com>
+Date:   Mon Apr 13 21:29:02 2020 +0200
+
+    Add support for setting a custom baudrate on the MIPS platform
+    
+    Fixed the issue where a custom baudrate could not be set for the MIPS platform.
+    The hard coded values in the IOCTL call do differ in MIPS when compared to most other platforms.
+
+diff --git a/serial/serialposix.py b/serial/serialposix.py
+index 7aceb76..0464075 100644
+--- a/serial/serialposix.py
++++ b/serial/serialposix.py
+@@ -32,6 +32,7 @@ from __future__ import absolute_import
+ import errno
+ import fcntl
+ import os
++import platform
+ import select
+ import struct
+ import sys
+@@ -80,8 +81,14 @@ if plat[:5] == 'linux':    # Linux (confirmed)  # noqa
+     CMSPAR = 0o10000000000  # Use "stick" (mark/space) parity
+ 
+     # baudrate ioctls
+-    TCGETS2 = 0x802C542A
+-    TCSETS2 = 0x402C542B
++    if platform.machine().lower() == "mips":
++        TCGETS2 = 0x4030542A
++        TCSETS2 = 0x8030542B
++        BAUDRATE_OFFSET = 10
++    else:
++        TCGETS2 = 0x802C542A
++        TCSETS2 = 0x402C542B
++        BAUDRATE_OFFSET = 9
+     BOTHER = 0o010000
+ 
+     # RS485 ioctls
+@@ -154,7 +161,7 @@ if plat[:5] == 'linux':    # Linux (confirmed)  # noqa
+                 # set custom speed
+                 buf[2] &= ~termios.CBAUD
+                 buf[2] |= BOTHER
+-                buf[9] = buf[10] = baudrate
++                buf[BAUDRATE_OFFSET] = buf[BAUDRATE_OFFSET + 1] = baudrate
+ 
+                 # set serial_struct
+                 fcntl.ioctl(self.fd, TCSETS2, buf)
+commit 2aea0ba436d7a6af2f9f81b0daf245946b76dfe3
+Author: HinataKato <57648531+HinataKato@users.noreply.github.com>
+Date:   Sun Nov 19 00:36:32 2023 +0800
+
+    Adjust architectures detection for compatibility with MIPS/MIPS64
+    
+    This change ensures that the code handles both "mips" and "mips64" architectures correctly.
+
+diff --git a/serial/serialposix.py b/serial/serialposix.py
+index 8700af6..4233fa5 100644
+--- a/serial/serialposix.py
++++ b/serial/serialposix.py
+@@ -81,7 +81,7 @@ if plat[:5] == 'linux':    # Linux (confirmed)  # noqa
+     CMSPAR = 0o10000000000  # Use "stick" (mark/space) parity
+ 
+     # baudrate ioctls
+-    if platform.machine().lower() == "mips":
++    if "mips" in platform.machine().lower():
+         TCGETS2 = 0x4030542A
+         TCSETS2 = 0x8030542B
+         BAUDRATE_OFFSET = 10
+commit 5eb1eafe1091d38c5478c16ecbb04e6c82d7eb47
+Author: Shawn Anastasio <shawn@anastas.io>
+Date:   Mon Apr 21 19:02:53 2025 -0500
+
+    Fix setting custom baudrates on linux/ppc{64,64le} machines
+    
+    serialposix.py's PlatformSpecific._set_special_baudrate uses the
+    TCGETS2/TCSETS2 ioctls on linux to set custom baud rates, but the
+    correct ioctl number and constants are not present for ppc.
+    
+    Fix this by defining the required constants when running on a ppc
+    machine, as is already done for mips.
+    
+    Signed-off-by: Shawn Anastasio <shawn@anastas.io>
+
+diff --git a/serial/serialposix.py b/serial/serialposix.py
+index e2980a7..46cd059 100644
+--- a/serial/serialposix.py
++++ b/serial/serialposix.py
+@@ -85,11 +85,17 @@ if plat[:5] == 'linux':    # Linux (confirmed)  # noqa
+         TCGETS2 = 0x4030542A
+         TCSETS2 = 0x8030542B
+         BAUDRATE_OFFSET = 10
++        BOTHER = 0o010000
++    elif platform.machine().lower().startswith("ppc"):
++        TCGETS2 = 0x403c7413
++        TCSETS2 = 0x803c7414
++        BAUDRATE_OFFSET = 13
++        BOTHER = 0x0000001f
+     else:
+         TCGETS2 = 0x802C542A
+         TCSETS2 = 0x402C542B
+         BAUDRATE_OFFSET = 9
+-    BOTHER = 0o010000
++        BOTHER = 0o010000
+ 
+     # RS485 ioctls
+     TIOCGRS485 = 0x542E
+commit 70d188643b031d10d2a2b9ea880bd56789fdb1f6
+Author: Alexander von Gluck IV <alex@terarocket.io>
+Date:   Sun Aug 24 20:17:51 2025 -0500
+
+    serial_posix: Fix custom baud rates for glibc >=2.42; solves #805
+    
+    * https://sourceware.org/pipermail/libc-alpha/2025-July/168553.html
+    * Based on changes recommended by JoaoBarioni in #805
+    * Reverts 0085e1e1d (#519)
+
+diff --git a/serial/serialposix.py b/serial/serialposix.py
+index af6ac9d..9cbb05f 100644
+--- a/serial/serialposix.py
++++ b/serial/serialposix.py
+@@ -434,15 +434,8 @@ class Serial(SerialBase, PlatformSpecific):
+                 ispeed = ospeed = self.BAUDRATE_CONSTANTS[self._baudrate]
+             except KeyError:
+                 #~ raise ValueError('Invalid baud rate: %r' % self._baudrate)
+-
+-                # See if BOTHER is defined for this platform; if it is, use
+-                # this for a speed not defined in the baudrate constants list.
+-                try:
+-                    ispeed = ospeed = BOTHER
+-                except NameError:
+-                    # may need custom baud rate, it isn't in our list.
+-                    ispeed = ospeed = getattr(termios, 'B38400')
+-
++                # Use safe placeholder for tcsetattr(), try to set special baudrate later
++                ispeed = ospeed = termios.B38400
+                 try:
+                     custom_baud = int(self._baudrate)  # store for later
+                 except ValueError:

diff --git a/pyserial.spec b/pyserial.spec
index 5e6ae5b..35ab8d5 100644
--- a/pyserial.spec
+++ b/pyserial.spec
@@ -3,6 +3,7 @@ Name: pyserial
 Version: 3.5
 Release: %autorelease
 Source0: %pypi_source
+Patch0: 0001-cherry-picked-fixes-from-upstream.patch
 License: BSD-3-Clause
 URL: https://pypi.org/project/pyserial/
 BuildRequires: python3-devel
@@ -26,7 +27,7 @@ Conflicts: python2-pyserial < 3.4-6
 
 %prep
 export UNZIP="-aa"
-%autosetup
+%autosetup -p1
 
 # Python 3.13+ has removed unittest.findTestCases()
 # Reported upstream: https://github.com/pyserial/pyserial/issues/754