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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
commit3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch)
treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /drivers/clk/sprd/gate.c
downloadlinux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz
linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'drivers/clk/sprd/gate.c')
-rw-r--r--drivers/clk/sprd/gate.c135
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/clk/sprd/gate.c b/drivers/clk/sprd/gate.c
new file mode 100644
index 000000000..56e1714b5
--- /dev/null
+++ b/drivers/clk/sprd/gate.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Spreadtrum gate clock driver
+//
+// Copyright (C) 2017 Spreadtrum, Inc.
+// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
+
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include "gate.h"
+
+static void clk_gate_toggle(const struct sprd_gate *sg, bool en)
+{
+ const struct sprd_clk_common *common = &sg->common;
+ unsigned int reg;
+ bool set = sg->flags & CLK_GATE_SET_TO_DISABLE ? true : false;
+
+ set ^= en;
+
+ regmap_read(common->regmap, common->reg, &reg);
+
+ if (set)
+ reg |= sg->enable_mask;
+ else
+ reg &= ~sg->enable_mask;
+
+ regmap_write(common->regmap, common->reg, reg);
+}
+
+static void clk_sc_gate_toggle(const struct sprd_gate *sg, bool en)
+{
+ const struct sprd_clk_common *common = &sg->common;
+ bool set = sg->flags & CLK_GATE_SET_TO_DISABLE ? 1 : 0;
+ unsigned int offset;
+
+ set ^= en;
+
+ /*
+ * Each set/clear gate clock has three registers:
+ * common->reg - base register
+ * common->reg + offset - set register
+ * common->reg + 2 * offset - clear register
+ */
+ offset = set ? sg->sc_offset : sg->sc_offset * 2;
+
+ regmap_write(common->regmap, common->reg + offset,
+ sg->enable_mask);
+}
+
+static void sprd_gate_disable(struct clk_hw *hw)
+{
+ struct sprd_gate *sg = hw_to_sprd_gate(hw);
+
+ clk_gate_toggle(sg, false);
+}
+
+static int sprd_gate_enable(struct clk_hw *hw)
+{
+ struct sprd_gate *sg = hw_to_sprd_gate(hw);
+
+ clk_gate_toggle(sg, true);
+
+ return 0;
+}
+
+static void sprd_sc_gate_disable(struct clk_hw *hw)
+{
+ struct sprd_gate *sg = hw_to_sprd_gate(hw);
+
+ clk_sc_gate_toggle(sg, false);
+}
+
+static int sprd_sc_gate_enable(struct clk_hw *hw)
+{
+ struct sprd_gate *sg = hw_to_sprd_gate(hw);
+
+ clk_sc_gate_toggle(sg, true);
+
+ return 0;
+}
+
+static int sprd_pll_sc_gate_prepare(struct clk_hw *hw)
+{
+ struct sprd_gate *sg = hw_to_sprd_gate(hw);
+
+ clk_sc_gate_toggle(sg, true);
+ udelay(sg->udelay);
+
+ return 0;
+}
+
+static int sprd_gate_is_enabled(struct clk_hw *hw)
+{
+ struct sprd_gate *sg = hw_to_sprd_gate(hw);
+ struct sprd_clk_common *common = &sg->common;
+ struct clk_hw *parent;
+ unsigned int reg;
+
+ if (sg->flags & SPRD_GATE_NON_AON) {
+ parent = clk_hw_get_parent(hw);
+ if (!parent || !clk_hw_is_enabled(parent))
+ return 0;
+ }
+
+ regmap_read(common->regmap, common->reg, &reg);
+
+ if (sg->flags & CLK_GATE_SET_TO_DISABLE)
+ reg ^= sg->enable_mask;
+
+ reg &= sg->enable_mask;
+
+ return reg ? 1 : 0;
+}
+
+const struct clk_ops sprd_gate_ops = {
+ .disable = sprd_gate_disable,
+ .enable = sprd_gate_enable,
+ .is_enabled = sprd_gate_is_enabled,
+};
+EXPORT_SYMBOL_GPL(sprd_gate_ops);
+
+const struct clk_ops sprd_sc_gate_ops = {
+ .disable = sprd_sc_gate_disable,
+ .enable = sprd_sc_gate_enable,
+ .is_enabled = sprd_gate_is_enabled,
+};
+EXPORT_SYMBOL_GPL(sprd_sc_gate_ops);
+
+const struct clk_ops sprd_pll_sc_gate_ops = {
+ .unprepare = sprd_sc_gate_disable,
+ .prepare = sprd_pll_sc_gate_prepare,
+ .is_enabled = sprd_gate_is_enabled,
+};
+EXPORT_SYMBOL_GPL(sprd_pll_sc_gate_ops);