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asoc: codecs: Synchronize fs gen sequence updates

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Synchronize the bolero fs gen sequence updates
in order to avoid race conditions.

Change-Id: Idb95dcf1d5f5f4d24ab507ccd221d399a6b5a021
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>
This commit is contained in:
Aditya Bavanari 2019-12-06 19:49:01 +05:30 • committed by Gerrit - the friendly Code Review server
commit 7100fb8474
1 changed files with 6 additions and 0 deletions
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6
asoc/codecs/bolero/bolero-clk-rsc.c
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@ -32,6 +32,7 @@ static char clk_src_name[MAX_CLK][BOLERO_CLK_NAME_LENGTH] = {
struct bolero_clk_rsc {
struct device *dev;
struct mutex rsc_clk_lock;
struct mutex fs_gen_lock;
struct clk *clk[MAX_CLK];
int clk_cnt[MAX_CLK];
int reg_seq_en_cnt;
@ -422,6 +423,7 @@ void bolero_clk_rsc_fs_gen_request(struct device *dev, bool enable)
pr_err("%s: regmap is null\n", __func__);
return;
}
mutex_lock(&priv->fs_gen_lock);
if (enable) {
if (priv->reg_seq_en_cnt++ == 0) {
for (i = 0; i < (priv->num_fs_reg * 2); i += 2) {
@ -439,6 +441,7 @@ void bolero_clk_rsc_fs_gen_request(struct device *dev, bool enable)
dev_err_ratelimited(priv->dev, "%s: req_seq_cnt: %d is already disabled\n",
__func__, priv->reg_seq_en_cnt);
priv->reg_seq_en_cnt = 0;
mutex_unlock(&priv->fs_gen_lock);
return;
}
if (--priv->reg_seq_en_cnt == 0) {
@ -451,6 +454,7 @@ void bolero_clk_rsc_fs_gen_request(struct device *dev, bool enable)
}
}
}
mutex_unlock(&priv->fs_gen_lock);
}
EXPORT_SYMBOL(bolero_clk_rsc_fs_gen_request);
@ -665,6 +669,7 @@ static int bolero_clk_rsc_probe(struct platform_device *pdev)
priv->dev = &pdev->dev;
priv->dev_up = true;
mutex_init(&priv->rsc_clk_lock);
mutex_init(&priv->fs_gen_lock);
dev_set_drvdata(&pdev->dev, priv);
err:
@ -680,6 +685,7 @@ static int bolero_clk_rsc_remove(struct platform_device *pdev)
if (!priv)
return -EINVAL;
mutex_destroy(&priv->rsc_clk_lock);
mutex_destroy(&priv->fs_gen_lock);
return 0;
}