EDAC, sb_edac: Get rid of ->show_interleave_mode()

Function sbridge_register_mci() sets pvt->info.show_interleave_mode
to knl_show_interleave_mode() on Knight's Landing and
show_interleave_mode() anywhere else.

Merge show_interleave_mode() and knl_show_interleave_mode() in a single
implementation and use it without an indirect function pointer.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20170122172806.10412-1-nicolas.iooss_linux@m4x.org
[ Call it get_intlv_mode_str(). ]
Signed-off-by: Borislav Petkov <bp@suse.de>

diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 54ae6dc45ab2216343b0c542765537889332a0fb..573be9c0ffb8439e6037d6fed70217b344ff5427 100644 (file)
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -304,7 +304,6 @@ struct sbridge_info {
        u64             (*rir_limit)(u32 reg);
        u64             (*sad_limit)(u32 reg);
        u32             (*interleave_mode)(u32 reg);
-       char*           (*show_interleave_mode)(u32 reg);
        u32             (*dram_attr)(u32 reg);
        const u32       *dram_rule;
        const u32       *interleave_list;
@@ -811,11 +810,6 @@ static u32 interleave_mode(u32 reg)
        return GET_BITFIELD(reg, 1, 1);
 }
 
-char *show_interleave_mode(u32 reg)
-{
-       return interleave_mode(reg) ? "8:6" : "[8:6]XOR[18:16]";
-}
-
 static u32 dram_attr(u32 reg)
 {
        return GET_BITFIELD(reg, 2, 3);
@@ -831,29 +825,16 @@ static u32 knl_interleave_mode(u32 reg)
        return GET_BITFIELD(reg, 1, 2);
 }
 
-static char *knl_show_interleave_mode(u32 reg)
-{
-       char *s;
-
-       switch (knl_interleave_mode(reg)) {
-       case 0:
-               s = "use address bits [8:6]";
-               break;
-       case 1:
-               s = "use address bits [10:8]";
-               break;
-       case 2:
-               s = "use address bits [14:12]";
-               break;
-       case 3:
-               s = "use address bits [32:30]";
-               break;
-       default:
-               WARN_ON(1);
-               break;
-       }
+static const char * const knl_intlv_mode[] = {
+       "[8:6]", "[10:8]", "[14:12]", "[32:30]"
+};
 
-       return s;
+static const char *get_intlv_mode_str(u32 reg, enum type t)
+{
+       if (t == KNIGHTS_LANDING)
+               return knl_intlv_mode[knl_interleave_mode(reg)];
+       else
+               return interleave_mode(reg) ? "[8:6]" : "[8:6]XOR[18:16]";
 }
 
 static u32 dram_attr_knl(u32 reg)
@@ -1810,7 +1791,7 @@ static void get_memory_layout(const struct mem_ctl_info *mci)
                         show_dram_attr(pvt->info.dram_attr(reg)),
                         gb, (mb*1000)/1024,
                         ((u64)tmp_mb) << 20L,
-                        pvt->info.show_interleave_mode(reg),
+                        get_intlv_mode_str(reg, pvt->info.type),
                         reg);
                prv = limit;
 
@@ -3227,7 +3208,6 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
                pvt->info.rir_limit = rir_limit;
                pvt->info.sad_limit = sad_limit;
                pvt->info.interleave_mode = interleave_mode;
-               pvt->info.show_interleave_mode = show_interleave_mode;
                pvt->info.dram_attr = dram_attr;
                pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
                pvt->info.interleave_list = ibridge_interleave_list;
@@ -3251,7 +3231,6 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
                pvt->info.rir_limit = rir_limit;
                pvt->info.sad_limit = sad_limit;
                pvt->info.interleave_mode = interleave_mode;
-               pvt->info.show_interleave_mode = show_interleave_mode;
                pvt->info.dram_attr = dram_attr;
                pvt->info.max_sad = ARRAY_SIZE(sbridge_dram_rule);
                pvt->info.interleave_list = sbridge_interleave_list;
@@ -3275,7 +3254,6 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
                pvt->info.rir_limit = haswell_rir_limit;
                pvt->info.sad_limit = sad_limit;
                pvt->info.interleave_mode = interleave_mode;
-               pvt->info.show_interleave_mode = show_interleave_mode;
                pvt->info.dram_attr = dram_attr;
                pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
                pvt->info.interleave_list = ibridge_interleave_list;
@@ -3299,7 +3277,6 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
                pvt->info.rir_limit = haswell_rir_limit;
                pvt->info.sad_limit = sad_limit;
                pvt->info.interleave_mode = interleave_mode;
-               pvt->info.show_interleave_mode = show_interleave_mode;
                pvt->info.dram_attr = dram_attr;
                pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
                pvt->info.interleave_list = ibridge_interleave_list;
@@ -3323,7 +3300,6 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
                pvt->info.rir_limit = NULL;
                pvt->info.sad_limit = knl_sad_limit;
                pvt->info.interleave_mode = knl_interleave_mode;
-               pvt->info.show_interleave_mode = knl_show_interleave_mode;
                pvt->info.dram_attr = dram_attr_knl;
                pvt->info.max_sad = ARRAY_SIZE(knl_dram_rule);
                pvt->info.interleave_list = knl_interleave_list;