ASoC: nau8822: add support for supply regulators

Alexey Charkov <alchark@flipper.net> says:

The Nuvoton NAU8822 codec has four power supply pins: VDDA, VDDB, VDDC
and VDDSPK, which must be online and stable before the device can be
accessed over I2C. On boards where these rails are software-controlled,
probing the codec before the regulators are up results in -ENXIO errors
during register access.

This short series adds optional regulator support to both the device
tree binding and the driver, so platforms that need explicit power
sequencing can describe and enforce it:

Link: https://patch.msgid.link/20260525-nau8822-reg-v2-0-7d37ae393e46@flipper.net

22 files changed, 95 insertions, 53 deletions

diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 49d1749f30bb..a4b562700151 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -726,6 +726,11 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
 ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_update_all_gpes(void))
 
 ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
+				acpi_enable_gpe_cond(acpi_handle gpe_device,
+						     u32 gpe_number,
+						     u8 dispatch_type))
+
+ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
 				acpi_enable_gpe(acpi_handle gpe_device,
 						u32 gpe_number))
 
diff --git a/include/kunit/test.h b/include/kunit/test.h
index 9cd1594ab697..ce0573e196ce 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -613,6 +613,7 @@ unsigned long kunit_vm_mmap(struct kunit *test, struct file *file,
 			    unsigned long offset);
 
 void kunit_cleanup(struct kunit *test);
+void kunit_free_boot_suites(void);
 
 void __printf(2, 3) kunit_log_append(struct string_stream *log, const char *fmt, ...);
 
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 56cebaff0c91..8da0a15c95f4 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -72,6 +72,10 @@
 	__diag_push();								\
 	__diag_ignore(GCC, 8, "-Wattribute-alias",				\
 		      "Type aliasing is used to sanitize syscall arguments");\
+	__diag_ignore(clang, 23, "-Wunknown-warning-option",			\
+		      "Avoid breaking versions without -Wattribute-alias");	\
+	__diag_ignore(clang, 23, "-Wattribute-alias",				\
+		      "Type aliasing is used to sanitize syscall arguments");	\
 	asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))	\
 		__attribute__((alias(__stringify(__se_compat_sys##name))));	\
 	ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO);				\
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index e1123dd28486..527e4e136020 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -131,6 +131,12 @@
 #define __diag_str(s)		__diag_str1(s)
 #define __diag(s)		_Pragma(__diag_str(clang diagnostic s))
 
+#if CONFIG_CLANG_VERSION >= 230000
+#define __diag_clang_23(s)	__diag(s)
+#else
+#define __diag_clang_23(s)
+#endif
+
 #define __diag_clang_13(s)	__diag(s)
 
 #define __diag_ignore_all(option, comment) \
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index c16d4199bf92..836a50f5917a 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -397,6 +397,17 @@
 #endif
 
 /*
+ * Optional: not supported by clang
+ *
+ *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Attributes.html#index-noipa
+ */
+#if __has_attribute(noipa)
+# define __noipa __attribute__((noipa))
+#else
+# define __noipa
+#endif
+
+/*
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-weak-function-attribute
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-weak-variable-attribute
  */
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index e8fd77593b68..369966598a2c 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -711,6 +711,10 @@ struct ftrace_likely_data {
 #define __diag_GCC(version, severity, string)
 #endif
 
+#ifndef __diag_clang
+#define __diag_clang(version, severity, string)
+#endif
+
 #define __diag_push()	__diag(push)
 #define __diag_pop()	__diag(pop)
 
diff --git a/include/linux/dpll.h b/include/linux/dpll.h
index f8037f1ab20b..2dbe8567eafc 100644
--- a/include/linux/dpll.h
+++ b/include/linux/dpll.h
@@ -284,6 +284,7 @@ void dpll_pin_on_pin_unregister(struct dpll_pin *parent, struct dpll_pin *pin,
 int dpll_pin_ref_sync_pair_add(struct dpll_pin *pin,
 			       struct dpll_pin *ref_sync_pin);
 
+int __dpll_device_change_ntf(struct dpll_device *dpll);
 int dpll_device_change_ntf(struct dpll_device *dpll);
 
 int __dpll_pin_change_ntf(struct dpll_pin *pin);
diff --git a/include/linux/hid.h b/include/linux/hid.h
index bfb9859f391e..47dc0bc89fa4 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -1316,8 +1316,6 @@ void hid_quirks_exit(__u16 bus);
 	dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__)
 #define hid_warn(hid, fmt, ...)				\
 	dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__)
-#define hid_warn_ratelimited(hid, fmt, ...)				\
-	dev_warn_ratelimited(&(hid)->dev, fmt, ##__VA_ARGS__)
 #define hid_info(hid, fmt, ...)				\
 	dev_info(&(hid)->dev, fmt, ##__VA_ARGS__)
 #define hid_dbg(hid, fmt, ...)				\
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 93418625d3c5..5957bc25efa8 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -148,7 +148,7 @@ int hugetlb_mfill_atomic_pte(pte_t *dst_pte,
 			     struct folio **foliop);
 #endif /* CONFIG_USERFAULTFD */
 long hugetlb_reserve_pages(struct inode *inode, long from, long to,
-			   struct vm_area_desc *desc, vma_flags_t vma_flags);
+			   struct vm_area_struct *vma, vma_flags_t vma_flags);
 long hugetlb_unreserve_pages(struct inode *inode, long start, long end,
 						long freed);
 bool folio_isolate_hugetlb(struct folio *folio, struct list_head *list);
@@ -276,7 +276,6 @@ long hugetlb_change_protection(struct vm_area_struct *vma,
 void hugetlb_unshare_all_pmds(struct vm_area_struct *vma);
 void fixup_hugetlb_reservations(struct vm_area_struct *vma);
 void hugetlb_split(struct vm_area_struct *vma, unsigned long addr);
-int hugetlb_vma_lock_alloc(struct vm_area_struct *vma);
 
 unsigned int arch_hugetlb_cma_order(void);
 
@@ -469,11 +468,6 @@ static inline void fixup_hugetlb_reservations(struct vm_area_struct *vma)
 
 static inline void hugetlb_split(struct vm_area_struct *vma, unsigned long addr) {}
 
-static inline int hugetlb_vma_lock_alloc(struct vm_area_struct *vma)
-{
-	return 0;
-}
-
 #endif /* !CONFIG_HUGETLB_PAGE */
 
 #ifndef pgd_write
diff --git a/include/linux/hugetlb_inline.h b/include/linux/hugetlb_inline.h
index 565b473fd135..5c29cd3223a1 100644
--- a/include/linux/hugetlb_inline.h
+++ b/include/linux/hugetlb_inline.h
@@ -6,23 +6,13 @@
 
 #ifdef CONFIG_HUGETLB_PAGE
 
-static inline bool is_vm_hugetlb_flags(vm_flags_t vm_flags)
-{
-	return !!(vm_flags & VM_HUGETLB);
-}
-
 static inline bool is_vma_hugetlb_flags(const vma_flags_t *flags)
 {
-	return vma_flags_test_any(flags, VMA_HUGETLB_BIT);
+	return vma_flags_test(flags, VMA_HUGETLB_BIT);
 }
 
 #else
 
-static inline bool is_vm_hugetlb_flags(vm_flags_t vm_flags)
-{
-	return false;
-}
-
 static inline bool is_vma_hugetlb_flags(const vma_flags_t *flags)
 {
 	return false;
@@ -32,7 +22,7 @@ static inline bool is_vma_hugetlb_flags(const vma_flags_t *flags)
 
 static inline bool is_vm_hugetlb_page(const struct vm_area_struct *vma)
 {
-	return is_vm_hugetlb_flags(vma->vm_flags);
+	return is_vma_hugetlb_flags(&vma->flags);
 }
 
 #endif
diff --git a/include/linux/kho/abi/kexec_handover.h b/include/linux/kho/abi/kexec_handover.h
index 7e847a2339b0..db9bda6dd310 100644
--- a/include/linux/kho/abi/kexec_handover.h
+++ b/include/linux/kho/abi/kexec_handover.h
@@ -274,7 +274,7 @@ enum kho_radix_consts {
 	 * and 1 bitmap level.
 	 */
 	KHO_TREE_MAX_DEPTH =
-		DIV_ROUND_UP(KHO_ORDER_0_LOG2 - KHO_BITMAP_SIZE_LOG2,
+		DIV_ROUND_UP(KHO_ORDER_0_LOG2 - KHO_BITMAP_SIZE_LOG2 + 1,
 			     KHO_TABLE_SIZE_LOG2) + 1,
 };
 
diff --git a/include/linux/mm.h b/include/linux/mm.h
index af23453e9dbd..06bbe9eba636 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -5174,9 +5174,10 @@ int arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status);
  * DMA mapping IDs for page_pool
  *
  * When DMA-mapping a page, page_pool allocates an ID (from an xarray) and
- * stashes it in the upper bits of page->pp_magic. Non-PP pages can have
- * arbitrary kernel pointers stored in the same field as pp_magic (since
- * it overlaps with page->lru.next), so we must ensure that we cannot
+ * stashes it in the upper bits of page->pp_magic. We always want to be able to
+ * unambiguously identify page pool pages (using page_pool_page_is_pp()). Non-PP
+ * pages can have arbitrary kernel pointers stored in the same field as pp_magic
+ * (since it overlaps with page->lru.next), so we must ensure that we cannot
  * mistake a valid kernel pointer with any of the values we write into this
  * field.
  *
@@ -5211,6 +5212,26 @@ int arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status);
 #define PP_DMA_INDEX_MASK GENMASK(PP_DMA_INDEX_BITS + PP_DMA_INDEX_SHIFT - 1, \
 				  PP_DMA_INDEX_SHIFT)
 
+/* Mask used for checking in page_pool_page_is_pp() below. page->pp_magic is
+ * OR'ed with PP_SIGNATURE after the allocation in order to preserve bit 0 for
+ * the head page of compound page and bit 1 for pfmemalloc page, as well as the
+ * bits used for the DMA index. page_is_pfmemalloc() is checked in
+ * __page_pool_put_page() to avoid recycling the pfmemalloc page.
+ */
+#define PP_MAGIC_MASK ~(PP_DMA_INDEX_MASK | 0x3UL)
+
+#ifdef CONFIG_PAGE_POOL
+static inline bool page_pool_page_is_pp(const struct page *page)
+{
+	return (page->pp_magic & PP_MAGIC_MASK) == PP_SIGNATURE;
+}
+#else
+static inline bool page_pool_page_is_pp(const struct page *page)
+{
+	return false;
+}
+#endif
+
 #define PAGE_SNAPSHOT_FAITHFUL (1 << 0)
 #define PAGE_SNAPSHOT_PG_BUDDY (1 << 1)
 #define PAGE_SNAPSHOT_PG_IDLE  (1 << 2)
diff --git a/include/linux/netfilter/nf_conntrack_proto_gre.h b/include/linux/netfilter/nf_conntrack_proto_gre.h
index 9ee7014400e8..ad5563f0f864 100644
--- a/include/linux/netfilter/nf_conntrack_proto_gre.h
+++ b/include/linux/netfilter/nf_conntrack_proto_gre.h
@@ -18,9 +18,10 @@ struct nf_ct_gre_keymap {
 	struct rcu_head rcu;
 };
 
-/* add new tuple->key_reply pair to keymap */
-int nf_ct_gre_keymap_add(struct nf_conn *ct, enum ip_conntrack_dir dir,
-			 struct nf_conntrack_tuple *t);
+/* add tuple->key_reply pairs to keymap */
+bool nf_ct_gre_keymap_add(struct nf_conn *ct,
+			  const struct nf_conntrack_tuple *orig,
+			  const struct nf_conntrack_tuple *repl);
 
 /* delete keymap entries */
 void nf_ct_gre_keymap_destroy(struct nf_conn *ct);
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 0e03d816e8b9..7223f6f4e2b4 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -923,7 +923,6 @@ enum pagetype {
 	PGTY_zsmalloc		= 0xf6,
 	PGTY_unaccepted		= 0xf7,
 	PGTY_large_kmalloc	= 0xf8,
-	PGTY_netpp		= 0xf9,
 
 	PGTY_mapcount_underflow = 0xff
 };
@@ -1056,11 +1055,6 @@ PAGE_TYPE_OPS(Zsmalloc, zsmalloc, zsmalloc)
 PAGE_TYPE_OPS(Unaccepted, unaccepted, unaccepted)
 PAGE_TYPE_OPS(LargeKmalloc, large_kmalloc, large_kmalloc)
 
-/*
- * Marks page_pool allocated pages.
- */
-PAGE_TYPE_OPS(Netpp, netpp, netpp)
-
 /**
  * PageHuge - Determine if the page belongs to hugetlbfs
  * @page: The page to test.
diff --git a/include/linux/parport.h b/include/linux/parport.h
index 464c2ad28039..f64cb0676e3b 100644
--- a/include/linux/parport.h
+++ b/include/linux/parport.h
@@ -240,6 +240,7 @@ struct parport {
 
 	unsigned long devflags;
 #define PARPORT_DEVPROC_REGISTERED	0
+#define PARPORT_ANNOUNCED		1
 	struct pardevice *proc_device;	/* Currently register proc device */
 
 	struct list_head full_list;
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 666430b47899..110ad4e2aef9 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -1275,6 +1275,18 @@ static inline void uart_unlock_and_check_sysrq_irqrestore(struct uart_port *port
 #endif	/* CONFIG_MAGIC_SYSRQ_SERIAL */
 
 /*
+ * Variant of guard(uart_port_lock_irqsave) for IRQ handlers that may capture
+ * a SysRq character via uart_prepare_sysrq_char(). The destructor uses the
+ * sysrq-aware unlock helper so that a captured port->sysrq_ch is dispatched
+ * to handle_sysrq() on scope exit. The plain guard variant silently drops
+ * sysrq_ch and must not be used by callers that process RX.
+ */
+DEFINE_LOCK_GUARD_1(uart_port_lock_check_sysrq_irqsave, struct uart_port,
+                    uart_port_lock_irqsave(_T->lock, &_T->flags),
+                    uart_unlock_and_check_sysrq_irqrestore(_T->lock, _T->flags),
+                    unsigned long flags);
+
+/*
  * We do the SysRQ and SAK checking like this...
  */
 static inline int uart_handle_break(struct uart_port *port)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 2bcf78a4de7b..3f06254ab1b7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -821,6 +821,7 @@ enum skb_tstamp_type {
  *	@_sk_redir: socket redirection information for skmsg
  *	@_nfct: Associated connection, if any (with nfctinfo bits)
  *	@skb_iif: ifindex of device we arrived on
+ *	@tc_depth: counter for packet duplication
  *	@tc_index: Traffic control index
  *	@hash: the packet hash
  *	@queue_mapping: Queue mapping for multiqueue devices
@@ -1030,6 +1031,7 @@ struct sk_buff {
 	__u8			csum_not_inet:1;
 #endif
 	__u8			unreadable:1;
+	__u8			tc_depth:2;
 #if defined(CONFIG_NET_SCHED) || defined(CONFIG_NET_XGRESS)
 	__u16			tc_index;	/* traffic control index */
 #endif
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index f5639d5ac331..4fb7291f54b6 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -247,6 +247,10 @@ static inline int is_syscall_trace_event(struct trace_event_call *tp_event)
 	__diag_push();							\
 	__diag_ignore(GCC, 8, "-Wattribute-alias",			\
 		      "Type aliasing is used to sanitize syscall arguments");\
+	__diag_ignore(clang, 23, "-Wunknown-warning-option",		\
+		      "Avoid breaking versions without -Wattribute-alias");\
+	__diag_ignore(clang, 23, "-Wattribute-alias",			\
+		      "Type aliasing is used to sanitize syscall arguments");\
 	asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))	\
 		__attribute__((alias(__stringify(__se_sys##name))));	\
 	ALLOW_ERROR_INJECTION(sys##name, ERRNO);			\
diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h
index d2a7882c0b58..23cad403bb8f 100644
--- a/include/linux/tty_port.h
+++ b/include/linux/tty_port.h
@@ -6,10 +6,10 @@
 #include <linux/kref.h>
 #include <linux/mutex.h>
 #include <linux/tty_buffer.h>
+#include <linux/tty_driver.h>
 #include <linux/wait.h>
 
 struct attribute_group;
-struct tty_driver;
 struct tty_port;
 struct tty_struct;
 
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index cff7b773e972..9d844354c4d9 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -180,6 +180,13 @@ static inline u64 nft_reg_load64(const u32 *sreg)
 	return get_unaligned((u64 *)sreg);
 }
 
+static inline bool nft_reg_overlap(u8 src, u8 dst, u32 len)
+{
+	unsigned int n = DIV_ROUND_UP(len, sizeof(u32));
+
+	return src != dst && src < dst + n && dst < src + n;
+}
+
 static inline void nft_data_copy(u32 *dst, const struct nft_data *src,
 				 unsigned int len)
 {
diff --git a/include/net/netmem.h b/include/net/netmem.h
index 78fe51e5756b..bccacd21b6c3 100644
--- a/include/net/netmem.h
+++ b/include/net/netmem.h
@@ -94,20 +94,10 @@ enum net_iov_type {
  */
 struct net_iov {
 	struct netmem_desc desc;
-	unsigned int page_type;
 	enum net_iov_type type;
 	struct net_iov_area *owner;
 };
 
-/* Make sure 'the offset of page_type in struct page == the offset of
- * type in struct net_iov'.
- */
-#define NET_IOV_ASSERT_OFFSET(pg, iov)			\
-	static_assert(offsetof(struct page, pg) ==	\
-		      offsetof(struct net_iov, iov))
-NET_IOV_ASSERT_OFFSET(page_type, page_type);
-#undef NET_IOV_ASSERT_OFFSET
-
 struct net_iov_area {
 	/* Array of net_iovs for this area. */
 	struct net_iov *niovs;
@@ -127,11 +117,7 @@ static inline unsigned int net_iov_idx(const struct net_iov *niov)
 	return niov - net_iov_owner(niov)->niovs;
 }
 
-/* Initialize a niov: stamp the owning area, the memory provider type,
- * and the page_type "no type" sentinel expected by the page-type API
- * (see PAGE_TYPE_OPS in <linux/page-flags.h>) so that
- * page_pool_set_pp_info() can later call __SetPageNetpp() on a niov
- * cast to struct page.
+/* Initialize a niov: stamp the owning area, the memory provider type.
  */
 static inline void net_iov_init(struct net_iov *niov,
 				struct net_iov_area *owner,
@@ -139,7 +125,6 @@ static inline void net_iov_init(struct net_iov *niov,
 {
 	niov->owner = owner;
 	niov->type = type;
-	niov->page_type = UINT_MAX;
 }
 
 /* netmem */
@@ -245,7 +230,7 @@ static inline unsigned long netmem_pfn_trace(netmem_ref netmem)
  */
 #define pp_page_to_nmdesc(p)						\
 ({									\
-	DEBUG_NET_WARN_ON_ONCE(!PageNetpp(p));				\
+	DEBUG_NET_WARN_ON_ONCE(!page_pool_page_is_pp(p));		\
 	__pp_page_to_nmdesc(p);						\
 })
 
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 10d3edde6b2f..874409127e29 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -715,6 +715,7 @@ struct xfrm_mgr {
 					   const struct xfrm_migrate *m,
 					   int num_bundles,
 					   const struct xfrm_kmaddress *k,
+					   struct net *net,
 					   const struct xfrm_encap_tmpl *encap);
 	bool			(*is_alive)(const struct km_event *c);
 };
@@ -1891,7 +1892,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol);
 #ifdef CONFIG_XFRM_MIGRATE
 int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
 	       const struct xfrm_migrate *m, int num_bundles,
-	       const struct xfrm_kmaddress *k,
+	       const struct xfrm_kmaddress *k, struct net *net,
 	       const struct xfrm_encap_tmpl *encap);
 struct xfrm_state *xfrm_migrate_state_find(struct xfrm_migrate *m, struct net *net,
 						u32 if_id);