* [PATCH] ALSA: oss: Use flexible allocation for PCM plugins
@ 2026-05-19 0:46 Rosen Penev
2026-05-19 6:06 ` Takashi Iwai
0 siblings, 1 reply; 2+ messages in thread
From: Rosen Penev @ 2026-05-19 0:46 UTC (permalink / raw)
To: linux-sound; +Cc: Jaroslav Kysela, Takashi Iwai, open list
Allocate PCM plugin objects with kzalloc_flex() for the trailing
extra data area instead of open-coding the size calculation.
This keeps the allocation tied to the existing flexible array member
without changing the plugin lifetime.
Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
sound/core/oss/pcm_plugin.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 14b4a390a219..5f4d6945a7df 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -146,7 +146,7 @@ int snd_pcm_plugin_build(struct snd_pcm_substream *plug,
return -ENXIO;
if (snd_BUG_ON(!src_format || !dst_format))
return -ENXIO;
- plugin = kzalloc(sizeof(*plugin) + extra, GFP_KERNEL);
+ plugin = kzalloc_flex(*plugin, extra_data, extra);
if (plugin == NULL)
return -ENOMEM;
plugin->name = name;
--
2.54.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ALSA: oss: Use flexible allocation for PCM plugins
2026-05-19 0:46 [PATCH] ALSA: oss: Use flexible allocation for PCM plugins Rosen Penev
@ 2026-05-19 6:06 ` Takashi Iwai
0 siblings, 0 replies; 2+ messages in thread
From: Takashi Iwai @ 2026-05-19 6:06 UTC (permalink / raw)
To: Rosen Penev; +Cc: linux-sound, Jaroslav Kysela, Takashi Iwai, open list
On Tue, 19 May 2026 02:46:47 +0200,
Rosen Penev wrote:
>
> Allocate PCM plugin objects with kzalloc_flex() for the trailing
> extra data area instead of open-coding the size calculation.
>
> This keeps the allocation tied to the existing flexible array member
> without changing the plugin lifetime.
>
> Assisted-by: Codex:GPT-5.5
> Signed-off-by: Rosen Penev <rosenp@gmail.com>
Applied to for-next branch. Thanks.
Takashi
^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-05-19 0:46 [PATCH] ALSA: oss: Use flexible allocation for PCM plugins Rosen Penev
2026-05-19 6:06 ` Takashi Iwai
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