From: Andy Shevchenko andy.shevchenko@gmail.com
[ Upstream commit fba8a6f2263bc54683cf3fd75df4dbd5d041c195 ]
The clock handling has a few issues: - when getting second clock fails, the first one left prepared and enabled - on ->remove() clocks are unprepared and disabled twice
Fix all these by converting to use bulk clock operations since both clocks are mandatory.
Fixes: c3987cd2bca3 ("leds: lgm: Add LED controller driver for LGM SoC") Cc: Amireddy Mallikarjuna reddy mallikarjunax.reddy@linux.intel.com Signed-off-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Pavel Machek pavel@ucw.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/leds/blink/leds-lgm-sso.c | 44 ++++++++++++------------------- 1 file changed, 17 insertions(+), 27 deletions(-)
diff --git a/drivers/leds/blink/leds-lgm-sso.c b/drivers/leds/blink/leds-lgm-sso.c index 6a63846d10b5..7d5f0bf2817a 100644 --- a/drivers/leds/blink/leds-lgm-sso.c +++ b/drivers/leds/blink/leds-lgm-sso.c @@ -132,8 +132,7 @@ struct sso_led_priv { struct regmap *mmap; struct device *dev; struct platform_device *pdev; - struct clk *gclk; - struct clk *fpid_clk; + struct clk_bulk_data clocks[2]; u32 fpid_clkrate; u32 gptc_clkrate; u32 freq[MAX_FREQ_RANK]; @@ -763,12 +762,11 @@ static int sso_probe_gpios(struct sso_led_priv *priv) return sso_gpio_gc_init(dev, priv); }
-static void sso_clk_disable(void *data) +static void sso_clock_disable_unprepare(void *data) { struct sso_led_priv *priv = data;
- clk_disable_unprepare(priv->fpid_clk); - clk_disable_unprepare(priv->gclk); + clk_bulk_disable_unprepare(ARRAY_SIZE(priv->clocks), priv->clocks); }
static int intel_sso_led_probe(struct platform_device *pdev) @@ -785,36 +783,30 @@ static int intel_sso_led_probe(struct platform_device *pdev) priv->dev = dev;
/* gate clock */ - priv->gclk = devm_clk_get(dev, "sso"); - if (IS_ERR(priv->gclk)) { - dev_err(dev, "get sso gate clock failed!\n"); - return PTR_ERR(priv->gclk); - } + priv->clocks[0].id = "sso"; + + /* fpid clock */ + priv->clocks[1].id = "fpid";
- ret = clk_prepare_enable(priv->gclk); + ret = devm_clk_bulk_get(dev, ARRAY_SIZE(priv->clocks), priv->clocks); if (ret) { - dev_err(dev, "Failed to prepare/enable sso gate clock!\n"); + dev_err(dev, "Getting clocks failed!\n"); return ret; }
- priv->fpid_clk = devm_clk_get(dev, "fpid"); - if (IS_ERR(priv->fpid_clk)) { - dev_err(dev, "Failed to get fpid clock!\n"); - return PTR_ERR(priv->fpid_clk); - } - - ret = clk_prepare_enable(priv->fpid_clk); + ret = clk_bulk_prepare_enable(ARRAY_SIZE(priv->clocks), priv->clocks); if (ret) { - dev_err(dev, "Failed to prepare/enable fpid clock!\n"); + dev_err(dev, "Failed to prepare and enable clocks!\n"); return ret; } - priv->fpid_clkrate = clk_get_rate(priv->fpid_clk);
- ret = devm_add_action_or_reset(dev, sso_clk_disable, priv); - if (ret) { - dev_err(dev, "Failed to devm_add_action_or_reset, %d\n", ret); + ret = devm_add_action_or_reset(dev, sso_clock_disable_unprepare, priv); + if (ret) return ret; - } + + priv->fpid_clkrate = clk_get_rate(priv->clocks[1].clk); + + priv->mmap = syscon_node_to_regmap(dev->of_node);
priv->mmap = syscon_node_to_regmap(dev->of_node); if (IS_ERR(priv->mmap)) { @@ -859,8 +851,6 @@ static int intel_sso_led_remove(struct platform_device *pdev) sso_led_shutdown(led); }
- clk_disable_unprepare(priv->fpid_clk); - clk_disable_unprepare(priv->gclk); regmap_exit(priv->mmap);
return 0;