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| author |   Takashi Iwai <tiwai@suse.de> | 2025-02-27 10:51:49 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2025-02-27 12:25:54 +0100 |
| commit | 604a0fe88db0ecef56ac38156a154945f4535ddf (patch) | |
| tree | fc79fecf869a3c55817089cedb2f59d180d79070 | |
| parent | ALSA: arm: aaci: Constify amba_id table (diff) | |
| download | wireguard-linux-604a0fe88db0ecef56ac38156a154945f4535ddf.tar.xz wireguard-linux-604a0fe88db0ecef56ac38156a154945f4535ddf.zip | |
ALSA: pcm: Drop superfluous NULL check in snd_pcm_format_set_silence()
We applied a fix for a KASAN issue for snd_pcm_format_set_silence(),
and it introduced a NULL check of pat. But this turned out to be
utterly superfluous; it points to pcm_formats[].silence, and this is
an array, which can be never NULL.
The problem (supposedly) it tried to address at that time was likely
already fixed by another commit 8423f0b6d513 ("ALSA: pcm: oss: Fix
race at SNDCTL_DSP_SYNC") instead.
So let's drop the superfluous NULL check again. While we're at it,
keep the whitespace fix and move the pat assignment after the width
check for a bit better code readability.
Fixes: 2f7a26abb824 ("ALSA: pcm: Test for "silence" field in struct "pcm_format_data"")
Link: https://patch.msgid.link/20250227095150.8187-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | sound/core/pcm_misc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c index 4f556211bb56..d3a08e292072 100644 --- a/sound/core/pcm_misc.c +++ b/sound/core/pcm_misc.c @@ -432,9 +432,9 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int if (samples == 0) return 0; width = pcm_formats[(INT)format].phys; /* physical width */ - pat = pcm_formats[(INT)format].silence; - if (!width || !pat) + if (!width) return -EINVAL; + pat = pcm_formats[(INT)format].silence; /* signed or 1 byte data */ if (pcm_formats[(INT)format].signd == 1 || width <= 8) { unsigned int bytes = samples * width / 8; |