Bug 261071 - snd_midi: unit 0 cannot have 2 or more channels
Summary: snd_midi: unit 0 cannot have 2 or more channels
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 13.0-RELEASE
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-01-10 03:30 UTC by masatic.bsd
Modified: 2025-02-24 08:31 UTC (History)
0 users

See Also:

Attachments
patch, for 13.0-Release-p4 (2.31 KB, patch)
2022-01-10 03:30 UTC, masatic.bsd 		no flags Details | Diff
midi.diff (2.39 KB, patch)
2025-02-24 08:28 UTC, Mark Linimon 		no flags Details | Diff
midi.diff (2.42 KB, patch)
2025-02-24 08:31 UTC, Mark Linimon 		no flags Details | Diff
Show Obsolete (2) View All Add an attachment (proposed patch, testcase, etc.)

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Description masatic.bsd 2022-01-10 03:30:28 UTC 
Created attachment 230855 [details]
patch, for 13.0-Release-p4

midi_init uses 0 as auto-allocate unit number, but unit 0 is also a valid unit number.
This confliction makes secondary function call to allocate another channel for unit 0 is treated as auto-allocate and returns non-0 unit as result incorrectly.
Attached patch fixes this problem, auto-allocate number is changed from 0 to -1.
Comment 1 Mark Linimon freebsd_committer freebsd_triage 2025-02-24 08:28:52 UTC 
Created attachment 257829 [details]
midi.diff

^Triage: attempt to rebase patch.
Comment 2 Mark Linimon freebsd_committer freebsd_triage 2025-02-24 08:31:02 UTC 
Created attachment 257830 [details]
midi.diff

^Triage: attempt to rebase patch.