Created attachment 739461 [details, diff] Modified patch for /etc/portage/patches Upstream bug report: https://sigrok.org/bugzilla/show_bug.cgi?id=1687 Upstream fix to apply: https://sigrok.org/gitweb/?p=libserialport.git;a=commitdiff;h=6f9b03e597ea7200eb616a4e410add3dd1690cb1 Rationale: This issue makes the library inoperable on any recent kernel, even the currently stabilized "sys-kernel/gentoo-kernel-5.10.61". Any program that opens a serial port using sp_open() will fail. If LIBSERIALPORT_DEBUG is set in the environment, the following relevant messages will appear: sp: sp_open(0x55f7f28596b0, 0x3) called. sp: Opening port /dev/ttyACM0. sp: get_config(0x55f7f28596b0, 0x7ffc8c7459e0, 0x7ffc8c7459b0) called. sp: Getting configuration for port /dev/ttyACM0. sp: get_flow(3, 0x7ffc8c7459e0) called. sp: Getting advanced flow control. sp: sp_last_error_message() called. sp: sp_last_error_message returning Inappropriate ioctl for device. sp: get_flow returning SP_ERR_FAIL: Getting termiox failed: Inappropriate ioctl for device. sp: sp_free_error_message(Inappropriate ioctl for device) called. sp: sp_free_error_message returning. sp: get_config returning SP_ERR_FAIL. sp: sp_close(0x55f7f28596b0) called. sp: Closing port /dev/ttyACM0. sp: sp_close returning SP_OK. sp: sp_open returning SP_ERR_FAIL. Kernel patch causing the change: https://www.spinics.net/lists/linux-serial/msg41926.html Lines causing the bug: https://sigrok.org/gitweb/?p=libserialport.git;a=blob;f=serialport.c;h=e6097eeda975f914ec7b960f72c9e2df546e8281;hb=HEAD#l1774
I'll apply it if you reply to me at https://bugs.gentoo.org/794592#c5 ;) (Joking, of course, I'll look at this now.)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d0d32526c2f5a421da0d79cd55d287bab06e260a commit d0d32526c2f5a421da0d79cd55d287bab06e260a Author: Sam James <sam@gentoo.org> AuthorDate: 2021-09-16 01:05:11 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2021-09-16 01:17:33 +0000 dev-libs/libserialport: add patch for runtime breakage w/ new kernels Closes: https://bugs.gentoo.org/813273 Signed-off-by: Sam James <sam@gentoo.org> .../files/libserialport-0.1.1-kernel-termiox.patch | 32 +++++++++++++++ .../libserialport/libserialport-0.1.1-r1.ebuild | 46 ++++++++++++++++++++++ 2 files changed, 78 insertions(+)
