5.4-stable review patch. If anyone has any objections, please let me know.
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From: Arnd Bergmann arnd@arndb.de
[ Upstream commit 7e10d7242ea8a5947878880b912ffa5806520705 ]
This structure is really too larget to be allocated on the stack:
sound/soc/soc-ops.c:435:5: error: stack frame size (1296) exceeds limit (1280) in 'snd_soc_limit_volume' [-Werror,-Wframe-larger-than]
Change the function to dynamically allocate it instead.
There is probably a better way to do it since only two integer fields inside of that structure are actually used, but this is the simplest rework for the moment.
Fixes: 783db6851c18 ("ASoC: ops: Enforce platform maximum on initial value") Signed-off-by: Arnd Bergmann arnd@arndb.de Link: https://patch.msgid.link/20250610093057.2643233-1-arnd@kernel.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/soc-ops.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-)
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index a3b1f1c064dd..02e4f336b524 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -638,28 +638,32 @@ EXPORT_SYMBOL_GPL(snd_soc_get_volsw_range); static int snd_soc_clip_to_platform_max(struct snd_kcontrol *kctl) { struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value; - struct snd_ctl_elem_value uctl; + struct snd_ctl_elem_value *uctl; int ret;
if (!mc->platform_max) return 0;
- ret = kctl->get(kctl, &uctl); + uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); + if (!uctl) + return -ENOMEM; + + ret = kctl->get(kctl, uctl); if (ret < 0) - return ret; + goto out;
- if (uctl.value.integer.value[0] > mc->platform_max) - uctl.value.integer.value[0] = mc->platform_max; + if (uctl->value.integer.value[0] > mc->platform_max) + uctl->value.integer.value[0] = mc->platform_max;
if (snd_soc_volsw_is_stereo(mc) && - uctl.value.integer.value[1] > mc->platform_max) - uctl.value.integer.value[1] = mc->platform_max; + uctl->value.integer.value[1] > mc->platform_max) + uctl->value.integer.value[1] = mc->platform_max;
- ret = kctl->put(kctl, &uctl); - if (ret < 0) - return ret; + ret = kctl->put(kctl, uctl);
- return 0; +out: + kfree(uctl); + return ret; }
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