4 Feb
2009
4 Feb
'09
2 p.m.
At Wed, 4 Feb 2009 12:48:33 +0100, Hans-Christian Egtvedt wrote:
+static int at32_abdac_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)+{
- struct at32_abdac *dac = snd_pcm_substream_chip(substream);
- int retval;
- retval = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));- if (retval)
return retval;
snd_pcm_lib_malloc_pages() returns 1 if the buffer is changed (e.g. reallocation). So, this check should be if (retval < 0).
+static int at32_abdac_trigger(struct snd_pcm_substream *substream, int cmd) +{
- struct at32_abdac *dac = snd_pcm_substream_chip(substream);
- int retval = -EINVAL;
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */
- case SNDRV_PCM_TRIGGER_RESUME: /* fall through */
- case SNDRV_PCM_TRIGGER_START:
clk_enable(dac->sample_clk);retval = dw_dma_cyclic_start(dac->dma.chan);if (retval)goto out;dac_writel(dac, CTRL, DAC_BIT(EN));break;- case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */
- case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */
- case SNDRV_PCM_TRIGGER_STOP:
set_bit(DMA_STOP, &dac->flags);dw_dma_cyclic_stop(dac->dma.chan);dac_writel(dac, DATA, 0);dac_writel(dac, CTRL, 0);clk_disable(dac->sample_clk);break;
No retval is set for these cases?
+static int __devinit at32_abdac_probe(struct platform_device *pdev)
(snip)
- retval = -ENOMEM;
- card = snd_card_new(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
THIS_MODULE, sizeof(struct at32_abdac));
The recent version has a newer API, snd_card_create(). This function gives the error code. Please use the new function instead.
thanks,
Takashi