git: 0d33cdd04da7 - stable/15 - sound: Unlock around uiomove() in midi_{read,write}()

The branch stable/15 has been updated by christos:

URL: https://cgit.FreeBSD.org/src/commit/?id=0d33cdd04da7498a2070fe3f1557b2d519cc66fb

commit 0d33cdd04da7498a2070fe3f1557b2d519cc66fb
Author:     Christos Margiolis <christos@FreeBSD.org>
AuthorDate: 2026-01-12 11:27:15 +0000
Commit:     Christos Margiolis <christos@FreeBSD.org>
CommitDate: 2026-01-21 16:05:31 +0000

    sound: Unlock around uiomove() in midi_{read,write}()
    
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Reviewed by:    markj
    Differential Revision:  https://reviews.freebsd.org/D54130
    
    (cherry picked from commit 6b69d6726a7d3455fb295abfcf9aedd48c580d4a)
---
 sys/dev/sound/midi/midi.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sys/dev/sound/midi/midi.c b/sys/dev/sound/midi/midi.c
index c86f5fb41b14..8c38b00f15ad 100644
--- a/sys/dev/sound/midi/midi.c
+++ b/sys/dev/sound/midi/midi.c
@@ -391,9 +391,11 @@ midi_read(struct cdev *i_dev, struct uio *uio, int ioflag)
 		used = MIN(used, MIDI_RSIZE);
 
 		MIDIQ_DEQ(m->inq, buf, used);
+		mtx_unlock(&m->lock);
 		retval = uiomove(buf, used, uio);
 		if (retval)
-			goto err1;
+			goto err0;
+		mtx_lock(&m->lock);
 	}
 
 	/*
@@ -457,9 +459,11 @@ midi_write(struct cdev *i_dev, struct uio *uio, int ioflag)
 		used = MIN(MIDIQ_AVAIL(m->outq), uio->uio_resid);
 		used = MIN(used, MIDI_WSIZE);
 
+		mtx_unlock(&m->lock);
 		retval = uiomove(buf, used, uio);
 		if (retval)
-			goto err1;
+			goto err0;
+		mtx_lock(&m->lock);
 		MIDIQ_ENQ(m->outq, buf, used);
 		/*
 	         * Inform the bottom half that data can be written