Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracegrafted

Pull tracing fixes from Steven Rostedt:

 - Fix error output of boot instance creation failure

   Currently if a boot instance creation fails, instead of printing out
   the name of the instance that failed, it prints "(null)". That is
   because it prints "cur_str" that had already been processed by
   strsep(). Print the saved name instead.

   While at it, print the error code of the failure.

 - Fix use-after-free for same named historgrams

   Histograms can be named so that they can be used in multiple events.
   But if the named histogram has a variable attached, the second event
   that uses the named histogram which duplicates it and needs to free
   the original after duplication leaves the old variable in place and
   still visible. If another histogram uses than variable, it will use
   the stale one which will try to reference the freed duplicate
   histogram and crash the kernel.

   Free the duplicate variables along with the duplicated histogram
   data.

 - Check return value of kthread_run() in event self test

   The events self tests uses a kthread for testing but does not check
   if it succeeded in creating a kthread. If the kthread creation were
   to fail, the code will still try to call kthread_stop() on the error
   returned.

 - Fix race between reading trace_pipe and updating subbuffer size

   If a user is reading the trace_pipe file at the same time they update
   the ring buffer sub-buffer size, can cause the trace_pipe read to
   read stale data. Add trace_access_lock() around updating the ring
   buffer sub-buffer size.

 - Fix eventfs_inode on failure path in creation of the events directory

   In the creation of the "events" directory, if after allocating the
   eventfs_inode a failure is detected, it calls cleanup_ei() which
   calls free_ei(). The free_ei() will test if eventfs_inode being freed
   has no children. It is a bug if it does. But on the failure case of
   the creation of the "events" directory, the children lists have not
   yet been initialized and the free will trigger a warning because
   list_empty() on an uninitialized list returns false.

   Move the initialization into init_ei() where it makes more sense and
   makes sure that a created eventfs_inode has its lists initialized
   upon creation.

 - Check return value of kthread_run() in ftrace direct sample code

   The sample code that shows how to use the ftrace direct calls does
   not test the return of kthread_run() to see if it succeeds. Return a
   failure if the kthread_run() doesn't succeed.

 - Clear user events state on fork in case of alloc failure

   On fork, the child gets a pointer to the parent's user events state.
   It makes a copy of it then updates the child's pointer to it. But if
   the allocation fails, the duplication function leaves the child with
   a pointer to its parent's descriptor. When the child cleans up its
   data, it will free the parent's descriptor while the parent is still
   using it.

   In the duplication function, set the child's user_event_mm to NULL
   before testing if the allocation succeeded, and when it exits it will
   not free the parent's descriptor.

 - Fix retry exhaustion in simple ring buffer reader swap

   simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
   post-decrements it only after a failed link replacement. On the final
   attempt, a successful replacement leaves retry at zero, while a
   failed replacement leaves it at -1.

   But the check for success expects the retry value to be non-zero and
   exits with an error on zero. This is the opposite result. Fix it.

 - Fail nicely when the remote swap_reader_page() returns an error

   Currently, if the swap_reader_page() of a remote buffer fails, it
   triggers a WARN_ON_ONCE() and continues normally. Instead, have it
   exit with an error and a pr_warn() print instead of a full WARNING.

* tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  ring-buffer: Stop remote reader update when page swap fails
  tracing: Fix retry exhaustion in simple ring buffer reader swap
  tracing/user_events: Clear copied tracing state before fork duplication
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify
  samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify
  eventfs: Initialize ei->children and ei->list in init_ei()
  tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
  tracing: Fix crash passing ERR_PTR to kthread_stop()
  tracing: Fix use-after-free with same-name named triggers
  tracing: Fix logged instance name on creation failure

1 files changed, 351 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt5575.c b/sound/soc/codecs/rt5575.c
new file mode 100644
index 000000000..5c3e60eaa
--- /dev/null
+++ b/sound/soc/codecs/rt5575.c
@@ -0,0 +1,351 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * rt5575.c  --  ALC5575 ALSA SoC audio component driver
+ *
+ * Copyright(c) 2025 Realtek Semiconductor Corp.
+ *
+ */
+
+#include <linux/i2c.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "rt5575.h"
+#include "rt5575-spi.h"
+
+static bool rt5575_readable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RT5575_BOOT:
+	case RT5575_ID:
+	case RT5575_ID_1:
+	case RT5575_MIXL_VOL:
+	case RT5575_MIXR_VOL:
+	case RT5575_PROMPT_VOL:
+	case RT5575_SPK01_VOL:
+	case RT5575_SPK23_VOL:
+	case RT5575_MIC1_VOL:
+	case RT5575_MIC2_VOL:
+	case RT5575_WNC_CTRL:
+	case RT5575_MODE_CTRL:
+	case RT5575_I2S_RATE_CTRL:
+	case RT5575_SLEEP_CTRL:
+	case RT5575_ALG_BYPASS_CTRL:
+	case RT5575_PINMUX_CTRL_2:
+	case RT5575_GPIO_CTRL_1:
+	case RT5575_DSP_BUS_CTRL:
+	case RT5575_SW_INT:
+	case RT5575_DSP_BOOT_ERR:
+	case RT5575_DSP_READY:
+	case RT5575_DSP_CMD_ADDR:
+	case RT5575_EFUSE_DATA_2:
+	case RT5575_EFUSE_DATA_3:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const DECLARE_TLV_DB_SCALE(ob_tlv, -9525, 75, 0);
+
+static const struct snd_kcontrol_new rt5575_snd_controls[] = {
+	SOC_DOUBLE("Speaker CH-01 Playback Switch", RT5575_SPK01_VOL, 31, 15, 1, 1),
+	SOC_DOUBLE_TLV("Speaker CH-01 Playback Volume", RT5575_SPK01_VOL, 17, 1, 167, 0, ob_tlv),
+	SOC_DOUBLE("Speaker CH-23 Playback Switch", RT5575_SPK23_VOL, 31, 15, 1, 1),
+	SOC_DOUBLE_TLV("Speaker CH-23 Playback Volume", RT5575_SPK23_VOL, 17, 1, 167, 0, ob_tlv),
+	SOC_DOUBLE("Mic1 Capture Switch", RT5575_MIC1_VOL, 31, 15, 1, 1),
+	SOC_DOUBLE_TLV("Mic1 Capture Volume", RT5575_MIC1_VOL, 17, 1, 167, 0, ob_tlv),
+	SOC_DOUBLE("Mic2 Capture Switch", RT5575_MIC2_VOL, 31, 15, 1, 1),
+	SOC_DOUBLE_TLV("Mic2 Capture Volume", RT5575_MIC2_VOL, 17, 1, 167, 0, ob_tlv),
+	SOC_DOUBLE_R("Mix Playback Switch", RT5575_MIXL_VOL, RT5575_MIXR_VOL, 31, 1, 1),
+	SOC_DOUBLE_R_TLV("Mix Playback Volume", RT5575_MIXL_VOL, RT5575_MIXR_VOL, 1, 127, 0,
+		ob_tlv),
+	SOC_DOUBLE("Prompt Playback Switch", RT5575_PROMPT_VOL, 31, 15, 1, 1),
+	SOC_DOUBLE_TLV("Prompt Playback Volume", RT5575_PROMPT_VOL, 17, 1, 167, 0, ob_tlv),
+};
+
+static const struct snd_soc_dapm_widget rt5575_dapm_widgets[] = {
+	SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF1TX", "AIF1 Capture", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF2RX", "AIF2 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF2TX", "AIF2 Capture", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF3RX", "AIF3 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF3TX", "AIF3 Capture", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_IN("AIF4RX", "AIF4 Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("AIF4TX", "AIF4 Capture", 0, SND_SOC_NOPM, 0, 0),
+
+	SND_SOC_DAPM_INPUT("INPUT"),
+	SND_SOC_DAPM_OUTPUT("OUTPUT"),
+};
+
+static const struct snd_soc_dapm_route rt5575_dapm_routes[] = {
+	{ "AIF1TX", NULL, "INPUT" },
+	{ "AIF2TX", NULL, "INPUT" },
+	{ "AIF3TX", NULL, "INPUT" },
+	{ "AIF4TX", NULL, "INPUT" },
+	{ "OUTPUT", NULL, "AIF1RX" },
+	{ "OUTPUT", NULL, "AIF2RX" },
+	{ "OUTPUT", NULL, "AIF3RX" },
+	{ "OUTPUT", NULL, "AIF4RX" },
+};
+
+static long long rt5575_get_priv_id(struct rt5575_priv *rt5575)
+{
+	int priv_id_low, priv_id_high;
+
+	regmap_write(rt5575->regmap, RT5575_EFUSE_PID, 0xa0000000);
+	regmap_read(rt5575->regmap, RT5575_EFUSE_DATA_2, &priv_id_low);
+	regmap_read(rt5575->regmap, RT5575_EFUSE_DATA_3, &priv_id_high);
+	regmap_write(rt5575->regmap, RT5575_EFUSE_PID, 0);
+
+	return ((long long)priv_id_high << 32) | (long long)priv_id_low;
+}
+
+static int rt5575_probe(struct snd_soc_component *component)
+{
+	struct rt5575_priv *rt5575 = snd_soc_component_get_drvdata(component);
+	struct device *dev = component->dev;
+
+	rt5575->component = component;
+
+	dev_info(dev, "Private ID: %llx\n", rt5575_get_priv_id(rt5575));
+
+	return 0;
+}
+
+#define RT5575_STEREO_RATES SNDRV_PCM_RATE_8000_192000
+#define RT5575_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8 | \
+			SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver rt5575_dai[] = {
+	{
+		.name = "rt5575-aif1",
+		.id = RT5575_AIF1,
+		.playback = {
+			.stream_name = "AIF1 Playback",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF1 Capture",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+	},
+	{
+		.name = "rt5575-aif2",
+		.id = RT5575_AIF2,
+		.playback = {
+			.stream_name = "AIF2 Playback",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF2 Capture",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+	},
+	{
+		.name = "rt5575-aif3",
+		.id = RT5575_AIF3,
+		.playback = {
+			.stream_name = "AIF3 Playback",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF3 Capture",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+	},
+	{
+		.name = "rt5575-aif4",
+		.id = RT5575_AIF4,
+		.playback = {
+			.stream_name = "AIF4 Playback",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+		.capture = {
+			.stream_name = "AIF4 Capture",
+			.channels_min = 1,
+			.channels_max = 8,
+			.rates = RT5575_STEREO_RATES,
+			.formats = RT5575_FORMATS,
+		},
+	},
+};
+
+static const struct snd_soc_component_driver rt5575_soc_component_dev = {
+	.probe = rt5575_probe,
+	.controls = rt5575_snd_controls,
+	.num_controls = ARRAY_SIZE(rt5575_snd_controls),
+	.dapm_widgets = rt5575_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(rt5575_dapm_widgets),
+	.dapm_routes = rt5575_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(rt5575_dapm_routes),
+	.use_pmdown_time = 1,
+	.endianness = 1,
+};
+
+static const struct regmap_config rt5575_dsp_regmap = {
+	.name = "dsp",
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 2,
+};
+
+static int rt5575_i2c_read(void *context, unsigned int reg, unsigned int *val)
+{
+	struct i2c_client *client = context;
+	struct rt5575_priv *rt5575 = i2c_get_clientdata(client);
+
+	return regmap_read(rt5575->dsp_regmap, reg | RT5575_DSP_MAPPING, val);
+}
+
+static int rt5575_i2c_write(void *context, unsigned int reg, unsigned int val)
+{
+	struct i2c_client *client = context;
+	struct rt5575_priv *rt5575 = i2c_get_clientdata(client);
+
+	return regmap_write(rt5575->dsp_regmap, reg | RT5575_DSP_MAPPING, val);
+}
+
+static const struct regmap_config rt5575_regmap = {
+	.reg_bits = 16,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = 0xfffc,
+	.readable_reg = rt5575_readable_register,
+	.reg_read = rt5575_i2c_read,
+	.reg_write = rt5575_i2c_write,
+	.use_single_read = true,
+	.use_single_write = true,
+};
+
+static int rt5575_fw_load_by_spi(struct rt5575_priv *rt5575)
+{
+	struct i2c_client *i2c = rt5575->i2c;
+	struct spi_device *spi;
+	struct device *dev = &i2c->dev;
+	int ret;
+
+	spi = rt5575_spi_get_device(dev);
+	if (!spi) {
+		dev_err(dev, "Failed to get spi_device\n");
+		return -ENODEV;
+	}
+
+	regmap_write(rt5575->dsp_regmap, 0xfafafafa, 0x00000004);
+	regmap_write(rt5575->dsp_regmap, 0x18008064, 0x00000000);
+	regmap_write(rt5575->dsp_regmap, 0x18008068, 0x0002ffff);
+
+	ret = rt5575_spi_fw_load(spi);
+	if (ret) {
+		dev_err(dev, "Load firmware failure: %d\n", ret);
+		return -ENODEV;
+	}
+
+	regmap_write(rt5575->dsp_regmap, 0x18000000, 0x00000000);
+	regmap_update_bits(rt5575->regmap, RT5575_SW_INT, 1, 1);
+
+	regmap_read_poll_timeout(rt5575->regmap, RT5575_SW_INT, ret, !ret, 100000, 10000000);
+	if (ret) {
+		dev_err(dev, "Run firmware failure: %d\n", ret);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int rt5575_i2c_probe(struct i2c_client *i2c)
+{
+	struct rt5575_priv *rt5575;
+	int ret, val, boot;
+	struct device *dev = &i2c->dev;
+
+	rt5575 = devm_kzalloc(dev, sizeof(struct rt5575_priv), GFP_KERNEL);
+	if (!rt5575)
+		return -ENOMEM;
+
+	i2c_set_clientdata(i2c, rt5575);
+
+	rt5575->i2c = i2c;
+
+	rt5575->dsp_regmap = devm_regmap_init_i2c(i2c, &rt5575_dsp_regmap);
+	if (IS_ERR(rt5575->dsp_regmap)) {
+		ret = PTR_ERR(rt5575->dsp_regmap);
+		dev_err(dev, "Failed to allocate DSP register map: %d\n", ret);
+		return ret;
+	}
+
+	rt5575->regmap = devm_regmap_init(dev, NULL, i2c, &rt5575_regmap);
+	if (IS_ERR(rt5575->regmap)) {
+		ret = PTR_ERR(rt5575->regmap);
+		dev_err(dev, "Failed to allocate register map: %d\n", ret);
+		return ret;
+	}
+
+	regmap_read(rt5575->regmap, RT5575_ID, &val);
+	if (val != RT5575_DEVICE_ID) {
+		dev_err(dev, "Device with ID register %08x is not rt5575\n", val);
+		return -ENODEV;
+	}
+
+	regmap_read(rt5575->regmap, RT5575_BOOT, &boot);
+	if ((boot & RT5575_BOOT_MASK) == RT5575_BOOT_SPI) {
+		if (!IS_ENABLED(CONFIG_SND_SOC_RT5575_SPI)) {
+			dev_err(dev, "Please enable CONFIG_SND_SOC_RT5575_SPI\n");
+			return -ENODEV;
+		}
+
+		if (rt5575_fw_load_by_spi(rt5575))
+			return -ENODEV;
+	}
+
+	return devm_snd_soc_register_component(dev, &rt5575_soc_component_dev, rt5575_dai,
+					       ARRAY_SIZE(rt5575_dai));
+}
+
+static const struct i2c_device_id rt5575_i2c_id[] = {
+	{ .name = "rt5575" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, rt5575_i2c_id);
+
+static const struct of_device_id rt5575_of_match[] = {
+	{ .compatible = "realtek,rt5575" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, rt5575_of_match);
+
+static struct i2c_driver rt5575_i2c_driver = {
+	.driver = {
+		.name = "rt5575",
+		.of_match_table = rt5575_of_match,
+	},
+	.probe = rt5575_i2c_probe,
+	.id_table = rt5575_i2c_id,
+};
+module_i2c_driver(rt5575_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC ALC5575 driver");
+MODULE_AUTHOR("Oder Chiou <oder_chiou@realtek.com>");
+MODULE_LICENSE("GPL");