| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 07 Feb 2019 18:00:21 +0100
From: Sylwester Nawrocki <s.nawrocki@...sung.com>
To: broonie@...nel.org
Cc: lgirdwood@...il.com, krzk@...nel.org, sbkim73@...sung.com,
m.szyprowski@...sung.com, b.zolnierkie@...sung.com,
alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
linux-samsung-soc@...r.kernel.org,
Sylwester Nawrocki <s.nawrocki@...sung.com>
Subject: [PATCH 13/22] ASoC: samsung: i2s: Drop spinlock pointer from
i2s_dai data structure
As we now have the 'priv' pointer in most of the places we can use
priv->lock directly, dropping extra indirection in the SFR region
spinlock access.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
---
sound/soc/samsung/i2s.c | 51 +++++++++++++++++++----------------------
1 file changed, 24 insertions(+), 27 deletions(-)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 9fae732bb620..c7499e25ce2b 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -87,8 +87,6 @@ struct i2s_dai {
u32 quirks;
const struct samsung_i2s_variant_regs *variant_regs;
- spinlock_t *lock;
-
struct samsung_i2s_priv *priv;
};
@@ -103,7 +101,7 @@ struct samsung_i2s_priv {
void __iomem *addr;
/* Spinlock protecting access to the device's registers */
- spinlock_t spinlock;
+ spinlock_t lock;
/* CPU DAIs and their corresponding drivers */
struct i2s_dai *dai;
@@ -527,9 +525,9 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
pm_runtime_get_sync(dai->dev);
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
mod = readl(priv->addr + I2SMOD);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
switch (clk_id) {
case SAMSUNG_I2S_OPCLK:
@@ -624,11 +622,11 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
goto err;
}
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
mod = readl(priv->addr + I2SMOD);
mod = (mod & ~mask) | val;
writel(mod, priv->addr + I2SMOD);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
done:
pm_runtime_put(dai->dev);
@@ -709,7 +707,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
}
pm_runtime_get_sync(dai->dev);
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
mod = readl(priv->addr + I2SMOD);
/*
* Don't change the I2S mode if any controller is active on this
@@ -717,7 +715,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
*/
if (any_active(i2s) &&
((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
pm_runtime_put(dai->dev);
dev_err(&i2s->pdev->dev,
"%s:%d Other DAI busy\n", __func__, __LINE__);
@@ -727,7 +725,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
mod &= ~(sdf_mask | lrp_rlow | mod_slave);
mod |= tmp;
writel(mod, priv->addr + I2SMOD);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
pm_runtime_put(dai->dev);
return 0;
@@ -812,11 +810,11 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
return -EINVAL;
}
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
mod = readl(priv->addr + I2SMOD);
mod = (mod & ~mask) | val;
writel(mod, priv->addr + I2SMOD);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
@@ -944,6 +942,7 @@ static int config_setup(struct i2s_dai *i2s)
static int i2s_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
+ struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct i2s_dai *i2s = to_info(rtd->cpu_dai);
@@ -954,10 +953,10 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
pm_runtime_get_sync(dai->dev);
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
if (config_setup(i2s)) {
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
return -EINVAL;
}
@@ -966,12 +965,12 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
else
i2s_txctrl(i2s, 1);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
if (capture) {
i2s_rxctrl(i2s, 0);
@@ -981,7 +980,7 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
i2s_fifo(i2s, FIC_TXFLUSH);
}
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
pm_runtime_put(dai->dev);
break;
}
@@ -1081,13 +1080,13 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
i2s->rfs = 0;
i2s->bfs = 0;
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
i2s_txctrl(i2s, 0);
i2s_rxctrl(i2s, 0);
i2s_fifo(i2s, FIC_TXFLUSH);
i2s_fifo(other, FIC_TXFLUSH);
i2s_fifo(i2s, FIC_RXFLUSH);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
/* Gate CDCLK by default */
if (!is_opened(other))
@@ -1107,9 +1106,9 @@ static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
if (!is_secondary(i2s)) {
if (i2s->quirks & QUIRK_NEED_RSTCLR) {
- spin_lock_irqsave(i2s->lock, flags);
+ spin_lock_irqsave(&priv->lock, flags);
writel(0, i2s->priv->addr + I2SCON);
- spin_unlock_irqrestore(i2s->lock, flags);
+ spin_unlock_irqrestore(&priv->lock, flags);
}
}
@@ -1316,13 +1315,13 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
ARRAY_SIZE(p_names),
CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
priv->addr + I2SMOD, reg_info->rclksrc_off,
- 1, 0, i2s->lock);
+ 1, 0, &priv->lock);
priv->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev,
i2s_clk_name[CLK_I2S_RCLK_PSR],
i2s_clk_name[CLK_I2S_RCLK_SRC],
CLK_SET_RATE_PARENT,
- priv->addr + I2SPSR, 8, 6, 0, i2s->lock);
+ priv->addr + I2SPSR, 8, 6, 0, &priv->lock);
p_names[0] = i2s_clk_name[CLK_I2S_RCLK_PSR];
priv->clk_data.clk_num = 2;
@@ -1332,7 +1331,7 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
i2s_clk_name[CLK_I2S_CDCLK], p_names[0],
CLK_SET_RATE_PARENT,
priv->addr + I2SMOD, reg_info->cdclkcon_off,
- CLK_GATE_SET_TO_DISABLE, i2s->lock);
+ CLK_GATE_SET_TO_DISABLE, &priv->lock);
priv->clk_data.clk_num += 1;
priv->clk_data.clks = priv->clk_table;
@@ -1410,8 +1409,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
pri_dai = &priv->dai[SAMSUNG_I2S_ID_PRIMARY - 1];
- spin_lock_init(&priv->spinlock);
- pri_dai->lock = &priv->spinlock;
+ spin_lock_init(&priv->lock);
if (!np) {
if (i2s_pdata == NULL) {
@@ -1473,7 +1471,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
if (quirks & QUIRK_SEC_DAI) {
sec_dai = &priv->dai[SAMSUNG_I2S_ID_SECONDARY - 1];
- sec_dai->lock = &priv->spinlock;
sec_dai->variant_regs = pri_dai->variant_regs;
sec_dai->dma_playback.addr = regs_base + I2STXDS;
sec_dai->dma_playback.chan_name = "tx-sec";
--
2.20.1
Powered by blists - more mailing lists