add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/arch/sparc/kernel/kprobes.c
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@@ -453,6 +453,7 @@
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 				      struct pt_regs *regs)
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 {
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 	ri->ret_addr = (kprobe_opcode_t *)(regs->u_regs[UREG_RETPC] + 8);
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+	ri->fp = NULL;
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 	/* Replace the return addr with trampoline addr */
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 	regs->u_regs[UREG_RETPC] =
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@@ -465,58 +466,12 @@
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 static int __kprobes trampoline_probe_handler(struct kprobe *p,
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 					      struct pt_regs *regs)
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 {
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-	struct kretprobe_instance *ri = NULL;
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-	struct hlist_head *head, empty_rp;
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-	struct hlist_node *tmp;
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-	unsigned long flags, orig_ret_address = 0;
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-	unsigned long trampoline_address =(unsigned long)&kretprobe_trampoline;
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+	unsigned long orig_ret_address = 0;
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-	INIT_HLIST_HEAD(&empty_rp);
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-	kretprobe_hash_lock(current, &head, &flags);
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-
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-	/*
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-	 * It is possible to have multiple instances associated with a given
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-	 * task either because an multiple functions in the call path
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-	 * have a return probe installed on them, and/or more than one return
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-	 * return probe was registered for a target function.
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-	 *
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-	 * We can handle this because:
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-	 *     - instances are always inserted at the head of the list
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-	 *     - when multiple return probes are registered for the same
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-	 *       function, the first instance's ret_addr will point to the
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-	 *       real return address, and all the rest will point to
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-	 *       kretprobe_trampoline
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-	 */
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-	hlist_for_each_entry_safe(ri, tmp, head, hlist) {
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-		if (ri->task != current)
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-			/* another task is sharing our hash bucket */
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-			continue;
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-
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-		if (ri->rp && ri->rp->handler)
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-			ri->rp->handler(ri, regs);
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-
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-		orig_ret_address = (unsigned long)ri->ret_addr;
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-		recycle_rp_inst(ri, &empty_rp);
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-
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-		if (orig_ret_address != trampoline_address)
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-			/*
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-			 * This is the real return address. Any other
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-			 * instances associated with this task are for
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-			 * other calls deeper on the call stack
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-			 */
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-			break;
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-	}
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-
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-	kretprobe_assert(ri, orig_ret_address, trampoline_address);
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+	orig_ret_address = __kretprobe_trampoline_handler(regs, &kretprobe_trampoline, NULL);
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 	regs->tpc = orig_ret_address;
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 	regs->tnpc = orig_ret_address + 4;
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-	kretprobe_hash_unlock(current, &flags);
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-
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-	hlist_for_each_entry_safe(ri, tmp, &empty_rp, hlist) {
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-		hlist_del(&ri->hlist);
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-		kfree(ri);
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-	}
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 	/*
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 	 * By returning a non-zero value, we are telling
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 	 * kprobe_handler() that we don't want the post_handler