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| author | Junrui Luo <moonafterrain@outlook.com> | 2025-11-06 10:24:57 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-18 14:03:43 +0100 |
| commit | 590bd2a7acba27fda5e4e9d623780f977c0e1e14 (patch) | |
| tree | c8ed091efe6d7addd79d66e1cc3bc7bc3359bd64 | |
| parent | 343fa9800cf9870ec681e21f0a6f2157b74ae520 (diff) | |
| download | linux-590bd2a7acba27fda5e4e9d623780f977c0e1e14.tar.gz linux-590bd2a7acba27fda5e4e9d623780f977c0e1e14.tar.bz2 linux-590bd2a7acba27fda5e4e9d623780f977c0e1e14.zip | |
ALSA: wavefront: Clear substream pointers on close
commit e11c5c13ce0ab2325d38fe63500be1dd88b81e38 upstream.
Clear substream pointers in close functions to avoid leaving dangling
pointers, helping to improve code safety and
prevents potential issues.
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Reported-by: Junrui Luo <moonafterrain@outlook.com>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Link: https://patch.msgid.link/SYBPR01MB7881DF762CAB45EE42F6D812AFC2A@SYBPR01MB7881.ausprd01.prod.outlook.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | sound/isa/wavefront/wavefront_midi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/isa/wavefront/wavefront_midi.c b/sound/isa/wavefront/wavefront_midi.c index 1250ecba659a..69d87c4cafae 100644 --- a/sound/isa/wavefront/wavefront_midi.c +++ b/sound/isa/wavefront/wavefront_midi.c @@ -278,6 +278,7 @@ static int snd_wavefront_midi_input_close(struct snd_rawmidi_substream *substrea return -EIO; guard(spinlock_irqsave)(&midi->open); + midi->substream_input[mpu] = NULL; midi->mode[mpu] &= ~MPU401_MODE_INPUT; return 0; @@ -300,6 +301,7 @@ static int snd_wavefront_midi_output_close(struct snd_rawmidi_substream *substre return -EIO; guard(spinlock_irqsave)(&midi->open); + midi->substream_output[mpu] = NULL; midi->mode[mpu] &= ~MPU401_MODE_OUTPUT; return 0; } |