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fix(i2s): fixed divide-by-zero coverity issue

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laokaiyao
2025-11-27 15:36:04 +08:00
parent 284c66ba06
commit f42b153669
4 changed files with 7 additions and 0 deletions
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components/esp_driver_i2s/i2s_common.c
+3
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@@ -416,6 +416,9 @@ uint32_t i2s_get_buf_size(i2s_chan_handle_t handle, uint32_t data_bit_width, uin
uint32_t bytes_per_sample = (data_bit_width + 7) / 8;
#endif // CONFIG_IDF_TARGET_ESP32
uint32_t bytes_per_frame = bytes_per_sample * active_chan;
if (bytes_per_frame == 0) {
return 0;
}
uint32_t bufsize = dma_frame_num * bytes_per_frame;
#if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
/* bufsize need to align with cache line size */
components/esp_driver_i2s/i2s_pdm.c
+2
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@@ -94,6 +94,7 @@ static esp_err_t i2s_pdm_tx_set_slot(i2s_chan_handle_t handle, const i2s_pdm_tx_
handle->active_slot = slot_cfg->slot_mode == I2S_SLOT_MODE_MONO ? 1 : 2;
uint32_t buf_size = i2s_get_buf_size(handle, slot_cfg->data_bit_width, handle->dma.frame_num);
ESP_RETURN_ON_FALSE(buf_size != 0, ESP_ERR_INVALID_ARG, TAG, "invalid data_bit_width");
/* The DMA buffer need to re-allocate if the buffer size changed */
if (handle->dma.buf_size != buf_size) {
ESP_RETURN_ON_ERROR(i2s_free_dma_desc(handle), TAG, "failed to free the old dma descriptor");
@@ -397,6 +398,7 @@ static esp_err_t i2s_pdm_rx_set_slot(i2s_chan_handle_t handle, const i2s_pdm_rx_
handle->active_slot = slot_cfg->slot_mode == I2S_SLOT_MODE_MONO ? 1 : 2;
uint32_t buf_size = i2s_get_buf_size(handle, slot_cfg->data_bit_width, handle->dma.frame_num);
ESP_RETURN_ON_FALSE(buf_size != 0, ESP_ERR_INVALID_ARG, TAG, "invalid data_bit_width");
/* The DMA buffer need to re-allocate if the buffer size changed */
if (handle->dma.buf_size != buf_size) {
ESP_RETURN_ON_ERROR(i2s_free_dma_desc(handle), TAG, "failed to free the old dma descriptor");
components/esp_driver_i2s/i2s_std.c
+1
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@@ -106,6 +106,7 @@ static esp_err_t i2s_std_set_slot(i2s_chan_handle_t handle, const i2s_std_slot_c
handle->active_slot = slot_cfg->slot_mode == I2S_SLOT_MODE_MONO ? 1 : 2;
uint32_t buf_size = i2s_get_buf_size(handle, slot_cfg->data_bit_width, handle->dma.frame_num);
ESP_RETURN_ON_FALSE(buf_size != 0, ESP_ERR_INVALID_ARG, TAG, "invalid data_bit_width");
/* The DMA buffer need to re-allocate if the buffer size changed */
if (handle->dma.buf_size != buf_size) {
ESP_RETURN_ON_ERROR(i2s_free_dma_desc(handle), TAG, "failed to free the old dma descriptor");
components/esp_driver_i2s/i2s_tdm.c
+1
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@@ -114,6 +114,7 @@ static esp_err_t i2s_tdm_set_slot(i2s_chan_handle_t handle, const i2s_tdm_slot_c
"total slots(%"PRIu32") * slot_bit_width(%"PRIu32") exceeds the maximum %d",
handle->total_slot, slot_bits, (int)I2S_LL_SLOT_FRAME_BIT_MAX);
uint32_t buf_size = i2s_get_buf_size(handle, slot_cfg->data_bit_width, handle->dma.frame_num);
ESP_RETURN_ON_FALSE(buf_size != 0, ESP_ERR_INVALID_ARG, TAG, "invalid data_bit_width");
/* The DMA buffer need to re-allocate if the buffer size changed */
if (handle->dma.buf_size != buf_size) {
ESP_RETURN_ON_ERROR(i2s_free_dma_desc(handle), TAG, "failed to free the old dma descriptor");