ASoC: cs35l3x: drain threaded IRQs before runtime suspend

Runyu Xiao <runyu.xiao@seu.edu.cn> says:

Both cs35l33 and cs35l34 can enter runtime suspend while their threaded
IRQ handlers are still reachable. The suspend path then switches the
driver into regcache cache-only mode and powers the codec down, while
the IRQ thread still expects live status-register access.

This issue was found by our static analysis tool and manually audited on
Linux v6.18.21. Directed QEMU no-device validation further showed that,
after runtime_suspend() completed, the real threaded handlers could
still be injected and would continue past volatile regmap read failures
into their release/update paths.

This series keeps the fix on the suspend actor and applies the same
runtime-suspend/threaded-IRQ ordering repair boundary to both drivers:

- track whether request_threaded_irq() actually succeeded
- disable_irq() before cache_only/power-off in runtime suspend
- enable_irq() only after regcache_sync() in runtime resume

That drains any in-flight threaded handler and blocks new IRQ handling
while the codec is suspended, without mixing in larger IRQ-thread
defensive cleanups.

Build-tested by compiling cs35l33.o and cs35l34.o.

No cs35l33/cs35l34 hardware was available for end-to-end runtime
testing.

Link: https://patch.msgid.link/20260611161553.3378721-1-runyu.xiao@seu.edu.cn

1 files changed, 8 insertions, 3 deletions

diff --git a/scripts/sorttable.c b/scripts/sorttable.c
index e8ed11c680c6..d8dc2a1b7c31 100644
--- a/scripts/sorttable.c
+++ b/scripts/sorttable.c
@@ -891,17 +891,22 @@ static int do_file(char const *const fname, void *addr)
 	table_sort_t custom_sort = NULL;
 
 	switch (elf_map_machine(ehdr)) {
-	case EM_AARCH64:
 #ifdef MCOUNT_SORT_ENABLED
+	case EM_AARCH64:
+		/* arm64 also needs RELA-based weak-function fixups. */
 		sort_reloc = true;
 		rela_type = 0x403;
-		/* arm64 uses patchable function entry placing before function */
+		/* fallthrough */
+	case EM_RISCV:
+		/* arm64 and RISC-V place patchable entries before the function. */
 		before_func = 8;
+#else
+	case EM_AARCH64:
+	case EM_RISCV:
 #endif
 		/* fallthrough */
 	case EM_386:
 	case EM_LOONGARCH:
-	case EM_RISCV:
 	case EM_S390:
 	case EM_X86_64:
 		custom_sort = sort_relative_table_with_data;