add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/arch/sparc/kernel/perf_event.c
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@@ -1771,9 +1771,11 @@
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 		perf_callchain_store(entry, pc);
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 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
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 		if ((pc + 8UL) == (unsigned long) &return_to_handler) {
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-			int index = current->curr_ret_stack;
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-			if (current->ret_stack && index >= graph) {
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-				pc = current->ret_stack[index - graph].ret;
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+			struct ftrace_ret_stack *ret_stack;
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+			ret_stack = ftrace_graph_get_ret_stack(current,
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+							       graph);
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+			if (ret_stack) {
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+				pc = ret_stack->ret;
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 				perf_callchain_store(entry, pc);
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 				graph++;
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 			}
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@@ -1853,15 +1855,11 @@
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 {
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 	u64 saved_fault_address = current_thread_info()->fault_address;
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 	u8 saved_fault_code = get_thread_fault_code();
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-	mm_segment_t old_fs;
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 	perf_callchain_store(entry, regs->tpc);
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 	if (!current->mm)
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 		return;
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-
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-	old_fs = get_fs();
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-	set_fs(USER_DS);
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 	flushw_user();
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@@ -1874,7 +1872,6 @@
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 	pagefault_enable();
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-	set_fs(old_fs);
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 	set_thread_fault_code(saved_fault_code);
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 	current_thread_info()->fault_address = saved_fault_address;
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 }