add ax88772_rst

hc

2024-05-10 9999e48639b3cecb08ffb37358bcba3b48161b29

 kernel/arch/sh/mm/tlbex_32.c
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@@ -23,6 +23,7 @@
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 	       unsigned long address)
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 {
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 	pgd_t *pgd;
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+	p4d_t *p4d;
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 	pud_t *pud;
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 	pmd_t *pmd;
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 	pte_t *pte;
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@@ -42,7 +43,10 @@
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 		pgd = pgd_offset(current->mm, address);
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 	}
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-	pud = pud_offset(pgd, address);
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+	p4d = p4d_offset(pgd, address);
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+	if (p4d_none_or_clear_bad(p4d))
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+		return 1;
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+	pud = pud_offset(p4d, address);
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 	if (pud_none_or_clear_bad(pud))
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 		return 1;
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 	pmd = pmd_offset(pud, address);