parisc: Fix crash when calling PDC_PAT_MEM PDT firmware function

[karo-tx-linux.git] / arch / parisc / kernel / pdt.c

diff --git a/arch/parisc/kernel/pdt.c b/arch/parisc/kernel/pdt.c
index f3a797e670b09461b45e1e7163d036fd457beb18..040d49b723d78f785900f64b83eea78e4b65ac33 100644 (file)
--- a/arch/parisc/kernel/pdt.c
+++ b/arch/parisc/kernel/pdt.c
@@ -112,10 +112,12 @@ void __init pdc_pdt_init(void)
 #ifdef CONFIG_64BIT
                struct pdc_pat_mem_read_pd_retinfo pat_pret;
 
+               /* try old obsolete PAT firmware function first */
+               pdt_type = PDT_PAT_OLD;
                ret = pdc_pat_mem_read_cell_pdt(&pat_pret, pdt_entry,
                        MAX_PDT_ENTRIES);
                if (ret != PDC_OK) {
-                       pdt_type = PDT_PAT_OLD;
+                       pdt_type = PDT_PAT_NEW;
                        ret = pdc_pat_mem_read_pd_pdt(&pat_pret, pdt_entry,
                                MAX_PDT_TABLE_SIZE, 0);
                }