amd64_edac: Sanitize syndrome extraction

Remove the two syndrome extraction macros and add a single function
which does the same thing but with proper typechecking. While at it,
make sure to cache ECC syndrome size and dump it in debug output.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 0d4bf5638243..707745b36733 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -382,6 +382,8 @@ enum {
 #define K8_NBCAP_SECDED                 BIT(3)
 #define K8_NBCAP_DCT_DUAL               BIT(0)
 
+#define EXT_NB_MCA_CFG                  0x180
+
 /* MSRs */
 #define K8_MSR_MCGCTL_NBE               BIT(4)
 
@@ -471,6 +473,9 @@ struct amd64_pvt {
         u32 dram_ctl_select_high;       /* DRAM Controller Select High Reg */
         u32 online_spare;               /* On-Line spare Reg */
 
+        /* x4 or x8 syndromes in use */
+        u8 syn_type;
+
         /* temp storage for when input is received from sysfs */
         struct err_regs ctl_error_info;