Currently the compiler (clang 19.1.7) is not happy about the size of the stack frame in sof_ipc4_prepare_copier_module:
sound/soc/sof/ipc4-topology.c:1800:1: error: stack frame size (1288) exceeds limit (1024) in 'sof_ipc4_prepare_copier_module' [-Werror,-Wframe-larger-than] 1800 | sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, | ^
Work around this by allocating ref_params on stack, as it looks the biggest variable on stack right now.
Note, this only happens when compile for 32-bit machines (x86_32 in my case).
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com --- sound/soc/sof/ipc4-topology.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/sound/soc/sof/ipc4-topology.c b/sound/soc/sof/ipc4-topology.c index 6d5cda813e48..41110ee6edc7 100644 --- a/sound/soc/sof/ipc4-topology.c +++ b/sound/soc/sof/ipc4-topology.c @@ -7,6 +7,7 @@ // // #include <linux/bitfield.h> +#include <linux/cleanup.h> #include <uapi/sound/sof/tokens.h> #include <sound/pcm_params.h> #include <sound/sof/ext_manifest4.h> @@ -1807,8 +1808,8 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp); struct sof_ipc4_copier_data *copier_data; int input_fmt_index, output_fmt_index; - struct snd_pcm_hw_params ref_params; struct sof_ipc4_copier *ipc4_copier; + struct snd_pcm_hw_params *ref_params __free(kfree) = NULL; struct snd_sof_dai *dai; u32 gtw_cfg_config_length; u32 dma_config_tlv_size = 0; @@ -1884,9 +1885,11 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, * for capture. */ if (dir == SNDRV_PCM_STREAM_PLAYBACK) - ref_params = *fe_params; + ref_params = kmemdup(fe_params, sizeof(*ref_params), GFP_KERNEL); else - ref_params = *pipeline_params; + ref_params = kmemdup(pipeline_params, sizeof(*ref_params), GFP_KERNEL); + if (!ref_params) + return -ENOMEM;
copier_data->gtw_cfg.node_id &= ~SOF_IPC4_NODE_INDEX_MASK; copier_data->gtw_cfg.node_id |= @@ -1919,8 +1922,11 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, * In case of capture the ref_params returned will be used to * find the input configuration of the copier. */ - ref_params = *fe_params; - ret = sof_ipc4_prepare_dai_copier(sdev, dai, &ref_params, dir); + ref_params = kmemdup(fe_params, sizeof(*ref_params), GFP_KERNEL); + if (!ref_params) + return -ENOMEM; + + ret = sof_ipc4_prepare_dai_copier(sdev, dai, ref_params, dir); if (ret < 0) return ret;
@@ -1929,7 +1935,7 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, * input configuration of the copier. */ if (dir == SNDRV_PCM_STREAM_PLAYBACK) - ref_params = *pipeline_params; + memcpy(ref_params, pipeline_params, sizeof(*ref_params));
break; } @@ -1938,7 +1944,10 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, ipc4_copier = (struct sof_ipc4_copier *)swidget->private; copier_data = &ipc4_copier->data; available_fmt = &ipc4_copier->available_fmt; - ref_params = *pipeline_params; + + ref_params = kmemdup(pipeline_params, sizeof(*ref_params), GFP_KERNEL); + if (!ref_params) + return -ENOMEM;
break; } @@ -1951,7 +1960,7 @@ sof_ipc4_prepare_copier_module(struct snd_sof_widget *swidget, /* set input and output audio formats */ input_fmt_index = sof_ipc4_init_input_audio_fmt(sdev, swidget, &copier_data->base_config, - &ref_params, available_fmt); + ref_params, available_fmt); if (input_fmt_index < 0) return input_fmt_index;