Currently the error count from status register is being read which
is not correct. Fix the issue by reading the count from the
error count register(ERRCNT).
Fixes: b500b4a029d5 ("EDAC, synopsys: Add ECC support for ZynqMP DDR controller")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
---
v2:
Remove the cumulative count change
v3:
Add the fixes and stable tag
drivers/edac/synopsys_edac.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c
index f05ff02c0656..1a9a5b886903 100644
--- a/drivers/edac/synopsys_edac.c
+++ b/drivers/edac/synopsys_edac.c
@@ -164,6 +164,11 @@
#define ECC_STAT_CECNT_SHIFT 8
#define ECC_STAT_BITNUM_MASK 0x7F
+/* ECC error count register definitions */
+#define ECC_ERRCNT_UECNT_MASK 0xFFFF0000
+#define ECC_ERRCNT_UECNT_SHIFT 16
+#define ECC_ERRCNT_CECNT_MASK 0xFFFF
+
/* DDR QOS Interrupt register definitions */
#define DDR_QOS_IRQ_STAT_OFST 0x20200
#define DDR_QOSUE_MASK 0x4
@@ -423,14 +428,16 @@ static int zynqmp_get_error_info(struct synps_edac_priv *priv)
base = priv->baseaddr;
p = &priv->stat;
+ regval = readl(base + ECC_ERRCNT_OFST);
+ p->ce_cnt = regval & ECC_ERRCNT_CECNT_MASK;
+ p->ue_cnt = (regval & ECC_ERRCNT_UECNT_MASK) >> ECC_ERRCNT_UECNT_SHIFT;
+ if (!p->ce_cnt)
+ goto ue_err;
+
regval = readl(base + ECC_STAT_OFST);
if (!regval)
return 1;
- p->ce_cnt = (regval & ECC_STAT_CECNT_MASK) >> ECC_STAT_CECNT_SHIFT;
- p->ue_cnt = (regval & ECC_STAT_UECNT_MASK) >> ECC_STAT_UECNT_SHIFT;
- if (!p->ce_cnt)
- goto ue_err;
p->ceinfo.bitpos = (regval & ECC_STAT_BITNUM_MASK);
--
2.17.1
