ata: libata-scsi: fix ata_dsm_trim_pages() kernel-docgrafted

make htmldocs fails with:

  Documentation/driver-api/libata:604: ./drivers/ata/libata-scsi.c:2301:
  ERROR: Unexpected indentation. [docutils]

The Return: section of ata_dsm_trim_pages() ends its first sentence with
a colon and continues with an indented bullet list. reStructuredText
requires a blank line before an indented block, so docutils chokes on
the list.

Simply adding the missing blank line does not work either: Return: is a
kernel-doc "special section", which is terminated by the first blank
line, so the bullet list would end up in the Description section,
detached from the sentence introducing it.

Spell the two bounds out as prose instead, so that the Return: section
stays self-contained. Documentation-only change.

Fixes: e64e6b5dc867 ("ata: libata-scsi: scale DSM TRIM payload by MAX PAGES PER DSM COMMAND")
Reported-by: Thomas Huth <thuth@redhat.com>
Closes: https://lore.kernel.org/linux-ide/b0a0b8e8-cc4f-4c7b-8bc5-fee0712d405a@redhat.com/
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20260916130031.29990-2-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/drivers/clk/qcom/clk-ref.c b/drivers/clk/qcom/clk-ref.c
new file mode 100644
index 000000000..3efdf6749
--- /dev/null
+++ b/drivers/clk/qcom/clk-ref.c
@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2026, Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk/qcom.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#define QCOM_CLK_REF_EN_MASK BIT(0)
+
+struct qcom_clk_ref_provider {
+	size_t num_refs;
+	struct qcom_clk_ref refs[] __counted_by(num_refs);
+};
+
+static inline struct qcom_clk_ref *to_qcom_clk_ref(struct clk_hw *hw)
+{
+	return container_of(hw, struct qcom_clk_ref, hw);
+}
+
+static const struct clk_parent_data qcom_clk_ref_parent_data = {
+	.index = 0,
+};
+
+static int qcom_clk_ref_prepare(struct clk_hw *hw)
+{
+	struct qcom_clk_ref *rclk = to_qcom_clk_ref(hw);
+	int ret;
+
+	if (!rclk->desc.num_regulators)
+		return 0;
+
+	ret = regulator_bulk_enable(rclk->desc.num_regulators, rclk->regulators);
+	if (ret)
+		pr_err("Failed to enable regulators for %s: %d\n",
+		       clk_hw_get_name(hw), ret);
+
+	return ret;
+}
+
+static void qcom_clk_ref_unprepare(struct clk_hw *hw)
+{
+	struct qcom_clk_ref *rclk = to_qcom_clk_ref(hw);
+
+	if (rclk->desc.num_regulators)
+		regulator_bulk_disable(rclk->desc.num_regulators, rclk->regulators);
+}
+
+static int qcom_clk_ref_enable(struct clk_hw *hw)
+{
+	struct qcom_clk_ref *rclk = to_qcom_clk_ref(hw);
+	int ret;
+
+	ret = regmap_set_bits(rclk->regmap, rclk->desc.offset, QCOM_CLK_REF_EN_MASK);
+	if (ret)
+		return ret;
+
+	udelay(10);
+
+	return 0;
+}
+
+static void qcom_clk_ref_disable(struct clk_hw *hw)
+{
+	struct qcom_clk_ref *rclk = to_qcom_clk_ref(hw);
+
+	regmap_clear_bits(rclk->regmap, rclk->desc.offset, QCOM_CLK_REF_EN_MASK);
+	udelay(10);
+}
+
+static int qcom_clk_ref_is_enabled(struct clk_hw *hw)
+{
+	struct qcom_clk_ref *rclk = to_qcom_clk_ref(hw);
+	u32 val;
+	int ret;
+
+	ret = regmap_read(rclk->regmap, rclk->desc.offset, &val);
+	if (ret)
+		return 0;
+
+	return !!(val & QCOM_CLK_REF_EN_MASK);
+}
+
+static const struct clk_ops qcom_clk_ref_ops = {
+	.prepare = qcom_clk_ref_prepare,
+	.unprepare = qcom_clk_ref_unprepare,
+	.enable = qcom_clk_ref_enable,
+	.disable = qcom_clk_ref_disable,
+	.is_enabled = qcom_clk_ref_is_enabled,
+};
+
+static int qcom_clk_ref_register(struct device *dev, struct regmap *regmap,
+				 struct qcom_clk_ref *clk_refs,
+				 const struct qcom_clk_ref_desc * const *descs,
+				 size_t num_clk_refs)
+{
+	const struct qcom_clk_ref_desc *desc;
+	struct clk_init_data init_data = {};
+	struct qcom_clk_ref *clk_ref;
+	size_t clk_idx;
+	unsigned int i;
+	int ret;
+
+	for (clk_idx = 0; clk_idx < num_clk_refs; clk_idx++) {
+		clk_ref = &clk_refs[clk_idx];
+		desc = descs[clk_idx];
+
+		/* Skip unpopulated indices; the array is indexed by clock ID. */
+		if (!desc)
+			continue;
+
+		if (WARN_ON(!desc->name))
+			continue;
+
+		clk_ref->regmap = regmap;
+		clk_ref->desc = *desc;
+
+		if (clk_ref->desc.num_regulators) {
+			clk_ref->regulators = devm_kcalloc(dev, clk_ref->desc.num_regulators,
+							   sizeof(*clk_ref->regulators),
+							   GFP_KERNEL);
+			if (!clk_ref->regulators)
+				return -ENOMEM;
+
+			for (i = 0; i < clk_ref->desc.num_regulators; i++)
+				clk_ref->regulators[i].supply =
+					clk_ref->desc.regulator_names[i];
+
+			ret = devm_regulator_bulk_get(dev, clk_ref->desc.num_regulators,
+						      clk_ref->regulators);
+			if (ret)
+				return dev_err_probe(dev, ret,
+						     "Failed to get regulators for %s\n",
+						     clk_ref->desc.name);
+		}
+
+		init_data.name = clk_ref->desc.name;
+		init_data.parent_data = &qcom_clk_ref_parent_data;
+		init_data.num_parents = 1;
+		init_data.ops = &qcom_clk_ref_ops;
+		clk_ref->hw.init = &init_data;
+
+		ret = devm_clk_hw_register(dev, &clk_ref->hw);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct clk_hw *qcom_clk_ref_provider_get(struct of_phandle_args *clkspec, void *data)
+{
+	struct qcom_clk_ref_provider *provider = data;
+	unsigned int idx = clkspec->args[0];
+
+	if (idx >= provider->num_refs)
+		return ERR_PTR(-EINVAL);
+
+	if (!provider->refs[idx].regmap)
+		return ERR_PTR(-ENOENT);
+
+	return &provider->refs[idx].hw;
+}
+
+int qcom_clk_ref_probe(struct platform_device *pdev,
+		       const struct regmap_config *config,
+		       const struct qcom_clk_ref_desc * const *descs,
+		       size_t num_clk_refs)
+{
+	struct qcom_clk_ref_provider *provider;
+	struct device *dev = &pdev->dev;
+	struct regmap *regmap;
+	void __iomem *base;
+	int ret;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	regmap = devm_regmap_init_mmio(dev, base, config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	provider = devm_kzalloc(dev, struct_size(provider, refs, num_clk_refs),
+				GFP_KERNEL);
+	if (!provider)
+		return -ENOMEM;
+
+	provider->num_refs = num_clk_refs;
+
+	ret = qcom_clk_ref_register(dev, regmap, provider->refs, descs,
+				    provider->num_refs);
+	if (ret)
+		return ret;
+
+	return devm_of_clk_add_hw_provider(dev, qcom_clk_ref_provider_get, provider);
+}
+EXPORT_SYMBOL_GPL(qcom_clk_ref_probe);