[PATCH 08/17] ppc/pnv: change pnv_pec_stk_update_map() to use PnvPHB4

[Daniel Henrique Barboza <danielhb413@gmail.com>]

stack->nest_regs_mr wasn't migrated to PnvPHB4 together with phb->nest_regs[] in
the previous patch. We were unable to cleanly convert its write MemoryRegionOps,
pnv_pec_stk_nest_xscom_write(), to use PnvPHB4 instead of PnvPhb4PecStack due to
pnv_pec_stk_update_map() using a stack. Thing is, we're now able to convert
pnv_pec_stk_update_map() because of what the did in previous patch.

The need for this intermediate step is a good example of the interconnected
relationship between stack and phb that we aim to cleanup.

Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
 hw/pci-host/pnv_phb4.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index 916a7a3cf0..0f4464ec67 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -893,10 +893,10 @@ static void pnv_phb4_update_regions(PnvPHB4 *phb)
     pnv_phb4_check_all_mbt(phb);
 }
 
-static void pnv_pec_stk_update_map(PnvPhb4PecStack *stack)
+static void pnv_pec_stk_update_map(PnvPHB4 *phb)
 {
+    PnvPhb4PecStack *stack = phb->stack;
     PnvPhb4PecState *pec = stack->pec;
-    PnvPHB4 *phb = stack->phb;
     MemoryRegion *sysmem = get_system_memory();
     uint64_t bar_en = phb->nest_regs[PEC_NEST_STK_BAR_EN];
     uint64_t bar, mask, size;
@@ -1046,7 +1046,7 @@ static void pnv_pec_stk_nest_xscom_write(void *opaque, hwaddr addr,
         break;
     case PEC_NEST_STK_BAR_EN:
         phb->nest_regs[reg] = val & 0xf000000000000000ull;
-        pnv_pec_stk_update_map(stack);
+        pnv_pec_stk_update_map(phb);
         break;
     case PEC_NEST_STK_DATA_FRZ_TYPE:
     case PEC_NEST_STK_PBCQ_TUN_BAR:
-- 
2.33.1