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Commit 92d71005 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: ice1724 - Check error in set_rate function 



The set_rate might return error but the current code doesn't check it.
This patch adds a proper error check.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 413f81eb

sound/pci/ice1712/ice1724.c

+14 −7
Original line number Diff line number Diff line
@@ -626,7 +626,7 @@ static unsigned char stdclock_set_mclk(struct snd_ice1712 *ice, 
	return 0;

}



static void snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate,

static int snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate,

				    int force)

{

	unsigned long flags;
@@ -634,17 +634,18 @@ static void snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate, 
	unsigned int i, old_rate;



	if (rate > ice->hw_rates->list[ice->hw_rates->count - 1])

		return;

		return -EINVAL;



	spin_lock_irqsave(&ice->reg_lock, flags);

	if ((inb(ICEMT1724(ice, DMA_CONTROL)) & DMA_STARTS) ||

	    (inb(ICEMT1724(ice, DMA_PAUSE)) & DMA_PAUSES)) {

		/* running? we cannot change the rate now... */

		spin_unlock_irqrestore(&ice->reg_lock, flags);

		return;

		return -EBUSY;

	}

	if (!force && is_pro_rate_locked(ice)) {

		spin_unlock_irqrestore(&ice->reg_lock, flags);

		return;

		return (rate == ice->cur_rate) ? 0 : -EBUSY;

	}



	old_rate = ice->get_rate(ice);
@@ -652,7 +653,7 @@ static void snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate, 
		ice->set_rate(ice, rate);

	else if (rate == ice->cur_rate) {

		spin_unlock_irqrestore(&ice->reg_lock, flags);

		return;

		return 0;

	}



	ice->cur_rate = rate;
@@ -674,13 +675,15 @@ static void snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate, 
	}

	if (ice->spdif.ops.setup_rate)

		ice->spdif.ops.setup_rate(ice, rate);



	return 0;

}



static int snd_vt1724_pcm_hw_params(struct snd_pcm_substream *substream,

				    struct snd_pcm_hw_params *hw_params)

{

	struct snd_ice1712 *ice = snd_pcm_substream_chip(substream);

	int i, chs;

	int i, chs, err;



	chs = params_channels(hw_params);

	mutex_lock(&ice->open_mutex);
@@ -715,7 +718,11 @@ static int snd_vt1724_pcm_hw_params(struct snd_pcm_substream *substream, 
		}

	}

	mutex_unlock(&ice->open_mutex);

	snd_vt1724_set_pro_rate(ice, params_rate(hw_params), 0);



	err = snd_vt1724_set_pro_rate(ice, params_rate(hw_params), 0);

	if (err < 0)

		return err;



	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));

}