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Commit 7100fb84 authored by Aditya Bavanari's avatar Aditya Bavanari Committed by Gerrit - the friendly Code Review server
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asoc: codecs: Synchronize fs gen sequence updates 



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

Change-Id: Idb95dcf1d5f5f4d24ab507ccd221d399a6b5a021
Signed-off-by: default avatarAditya Bavanari <abavanar@codeaurora.org>
parent 070e06c2

asoc/codecs/bolero/bolero-clk-rsc.c

+6 −0
Original line number Diff line number Diff line
@@ -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;

}