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Message-ID: <1461765509-9431-1-git-send-email-rf@opensource.wolfsonmicro.com>
Date: Wed, 27 Apr 2016 14:58:27 +0100
From: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
To: <broonie@...nel.org>
CC: <patches@...nsource.wolfsonmicro.com>,
<alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/3] ASoC: wm_adsp: free memory when unloaded or closed
The patch adds a wm_adsp2_remove() function to ensure that memory
is freed when the driver is unloaded or shut down.
Signed-off-by: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
---
sound/soc/codecs/wm_adsp.c | 20 ++++++++++++++++++++
sound/soc/codecs/wm_adsp.h | 1 +
2 files changed, 21 insertions(+)
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index b6470de..c350a52 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -1039,6 +1039,13 @@ static void wm_adsp_ctl_work(struct work_struct *work)
kfree(ctl_work);
}
+static void wm_adsp_free_ctl_blk(struct wm_coeff_ctl *ctl)
+{
+ kfree(ctl->cache);
+ kfree(ctl->name);
+ kfree(ctl);
+}
+
static int wm_adsp_create_control(struct wm_adsp *dsp,
const struct wm_adsp_alg_region *alg_region,
unsigned int offset, unsigned int len,
@@ -2434,6 +2441,19 @@ int wm_adsp2_init(struct wm_adsp *dsp)
}
EXPORT_SYMBOL_GPL(wm_adsp2_init);
+void wm_adsp2_remove(struct wm_adsp *dsp)
+{
+ struct wm_coeff_ctl *ctl;
+
+ while (!list_empty(&dsp->ctl_list)) {
+ ctl = list_first_entry(&dsp->ctl_list, struct wm_coeff_ctl,
+ list);
+ list_del(&ctl->list);
+ wm_adsp_free_ctl_blk(ctl);
+ }
+}
+EXPORT_SYMBOL_GPL(wm_adsp2_remove);
+
int wm_adsp_compr_open(struct wm_adsp *dsp, struct snd_compr_stream *stream)
{
struct wm_adsp_compr *compr;
diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h
index b61cb57..feb61e2 100644
--- a/sound/soc/codecs/wm_adsp.h
+++ b/sound/soc/codecs/wm_adsp.h
@@ -92,6 +92,7 @@ extern const struct snd_kcontrol_new wm_adsp_fw_controls[];
int wm_adsp1_init(struct wm_adsp *dsp);
int wm_adsp2_init(struct wm_adsp *dsp);
+void wm_adsp2_remove(struct wm_adsp *dsp);
int wm_adsp2_codec_probe(struct wm_adsp *dsp, struct snd_soc_codec *codec);
int wm_adsp2_codec_remove(struct wm_adsp *dsp, struct snd_soc_codec *codec);
int wm_adsp1_event(struct snd_soc_dapm_widget *w,
--
1.9.1
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