amd64_edac: Sanitize ->read_dram_ctl_register

This function is relevant for F10h and higher, and it has only one
callsite so drop its function pointer from the low_ops struct.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

2 files changed, 7 insertions, 9 deletions

diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 1cd82f9efb77..b85487d4de8d 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1138,16 +1138,18 @@ static int f10_dbam_to_chip_select(struct amd64_pvt *pvt, int cs_mode)
         return dbam_map[cs_mode];
 }
 
-static void f10_read_dram_ctl_register(struct amd64_pvt *pvt)
+static void read_dram_ctl_register(struct amd64_pvt *pvt)
 {
 
+        if (boot_cpu_data.x86 == 0xf)
+                return;
+
         if (!amd64_read_dct_pci_cfg(pvt, DCT_SEL_LO, &pvt->dct_sel_lo)) {
                 debugf0("F2x110 (DCTSelLow): 0x%08x, High range addrs at: 0x%x\n",
                         pvt->dct_sel_lo, dct_sel_baseaddr(pvt));
 
-                debugf0("  mode: %s, All DCTs on: %s\n",
-                        (dct_ganging_enabled(pvt) ? "ganged" : "unganged"),
-                        (dct_dram_enabled(pvt) ? "yes"   : "no"));
+                debugf0("  DCTs operate in %s mode.\n",
+                        (dct_ganging_enabled(pvt) ? "ganged" : "unganged"));
 
                 if (!dct_ganging_enabled(pvt))
                         debugf0("  Address range split per DCT: %s\n",
@@ -1579,7 +1581,6 @@ static struct amd64_family_type amd64_family_types[] = {
                 .f3_id = PCI_DEVICE_ID_AMD_10H_NB_MISC,
                 .ops = {
                         .early_channel_count    = f1x_early_channel_count,
-                        .read_dram_ctl_register = f10_read_dram_ctl_register,
                         .map_sysaddr_to_csrow   = f1x_map_sysaddr_to_csrow,
                         .dbam_to_cs             = f10_dbam_to_chip_select,
                         .read_dct_pci_cfg       = f10_read_dct_pci_cfg,
@@ -1939,8 +1940,7 @@ static void read_mc_regs(struct amd64_pvt *pvt)
 
         amd64_read_pci_cfg(pvt->F3, NBCAP, &pvt->nbcap);
 
-        if (pvt->ops->read_dram_ctl_register)
-                pvt->ops->read_dram_ctl_register(pvt);
+        read_dram_ctl_register(pvt);
 
         for (range = 0; range < DRAM_RANGES; range++) {
                 u8 rw;
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 3c60b2f2aeb6..e14a8d0ad19f 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -236,7 +236,6 @@
 #define dct_ganging_enabled(pvt)        ((boot_cpu_data.x86 == 0x10) && ((pvt)->dct_sel_lo & BIT(4)))
 
 #define dct_data_intlv_enabled(pvt)     ((pvt)->dct_sel_lo & BIT(5))
-#define dct_dram_enabled(pvt)           ((pvt)->dct_sel_lo & BIT(8))
 #define dct_memory_cleared(pvt)         ((pvt)->dct_sel_lo & BIT(10))
 
 #define SWAP_INTLV_REG                  0x10c
@@ -444,7 +443,6 @@ extern struct mcidev_sysfs_attribute amd64_dbg_attrs[NUM_DBG_ATTRS],
  */
 struct low_ops {
         int (*early_channel_count)      (struct amd64_pvt *pvt);
-        void (*read_dram_ctl_register)  (struct amd64_pvt *pvt);
         void (*map_sysaddr_to_csrow)    (struct mem_ctl_info *mci, u64 sys_addr,
                                          u16 syndrome);
         int (*dbam_to_cs)               (struct amd64_pvt *pvt, int cs_mode);