powerpc/eeh: Remove eeh information from pci_dn

The patch removes the eeh information from pci_dn since the eeh
device (struct eeh_dev) already contained those information and
the copy in pci_dn is no longer used except for the pseries iommu
mapping code, which we change to retrieve the PE address from eeh
device instead.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 13 insertions, 24 deletions

diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 21f99aec41b..ac39e6a3b25 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -156,14 +156,6 @@ struct pci_dn {
         struct  pci_dev *pcidev;        /* back-pointer to the pci device */
 #ifdef CONFIG_EEH
         struct eeh_dev *edev;           /* eeh device */
-        int     class_code;             /* pci device class */
-        int     eeh_mode;               /* See eeh.h for possible EEH_MODEs */
-        int     eeh_config_addr;
-        int     eeh_pe_config_addr; /* new-style partition endpoint address */
-        int     eeh_check_count;        /* # times driver ignored error */
-        int     eeh_freeze_count;       /* # times this device froze up. */
-        int     eeh_false_positives;    /* # times this device reported #ff's */
-        u32     config_space[16];       /* saved PCI config space */
 #endif
 #define IODA_INVALID_PE         (-1)
 #ifdef CONFIG_PPC_POWERNV
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index c442f2b1980..0915b1ad66c 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -809,8 +809,7 @@ machine_arch_initcall(pseries, find_existing_ddw_windows);
 static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
                         struct ddw_query_response *query)
 {
-        struct device_node *dn;
-        struct pci_dn *pcidn;
+        struct eeh_dev *edev;
         u32 cfg_addr;
         u64 buid;
         int ret;
@@ -821,12 +820,12 @@ static int query_ddw(struct pci_dev *dev, const u32 *ddw_avail,
          * Retrieve them from the pci device, not the node with the
          * dma-window property
          */
-        dn = pci_device_to_OF_node(dev);
-        pcidn = PCI_DN(dn);
-        cfg_addr = pcidn->eeh_config_addr;
-        if (pcidn->eeh_pe_config_addr)
-                cfg_addr = pcidn->eeh_pe_config_addr;
-        buid = pcidn->phb->buid;
+        edev = pci_dev_to_eeh_dev(dev);
+        cfg_addr = edev->config_addr;
+        if (edev->pe_config_addr)
+                cfg_addr = edev->pe_config_addr;
+        buid = edev->phb->buid;
+
         ret = rtas_call(ddw_avail[0], 3, 5, (u32 *)query,
                   cfg_addr, BUID_HI(buid), BUID_LO(buid));
         dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x"
@@ -839,8 +838,7 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail,
                         struct ddw_create_response *create, int page_shift,
                         int window_shift)
 {
-        struct device_node *dn;
-        struct pci_dn *pcidn;
+        struct eeh_dev *edev;
         u32 cfg_addr;
         u64 buid;
         int ret;
@@ -851,12 +849,11 @@ static int create_ddw(struct pci_dev *dev, const u32 *ddw_avail,
          * Retrieve them from the pci device, not the node with the
          * dma-window property
          */
-        dn = pci_device_to_OF_node(dev);
-        pcidn = PCI_DN(dn);
-        cfg_addr = pcidn->eeh_config_addr;
-        if (pcidn->eeh_pe_config_addr)
-                cfg_addr = pcidn->eeh_pe_config_addr;
-        buid = pcidn->phb->buid;
+        edev = pci_dev_to_eeh_dev(dev);
+        cfg_addr = edev->config_addr;
+        if (edev->pe_config_addr)
+                cfg_addr = edev->pe_config_addr;
+        buid = edev->phb->buid;
 
         do {
                 /* extra outputs are LIOBN and dma-addr (hi, lo) */