diff options
| -rw-r--r-- | drivers/edac/igen6_edac.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/edac/igen6_edac.c b/drivers/edac/igen6_edac.c index fdf3a84fe698..595908af9e5c 100644 --- a/drivers/edac/igen6_edac.c +++ b/drivers/edac/igen6_edac.c @@ -785,13 +785,22 @@ static u64 ecclog_read_and_clear(struct igen6_imc *imc) { u64 ecclog = readq(imc->window + ECC_ERROR_LOG_OFFSET); - if (ecclog & (ECC_ERROR_LOG_CE | ECC_ERROR_LOG_UE)) { - /* Clear CE/UE bits by writing 1s */ - writeq(ecclog, imc->window + ECC_ERROR_LOG_OFFSET); - return ecclog; - } + /* + * Quirk: The ECC_ERROR_LOG register of certain SoCs may contain + * the invalid value ~0. This will result in a flood of invalid + * error reports in polling mode. Skip it. + */ + if (ecclog == ~0) + return 0; - return 0; + /* Neither a CE nor a UE. Skip it.*/ + if (!(ecclog & (ECC_ERROR_LOG_CE | ECC_ERROR_LOG_UE))) + return 0; + + /* Clear CE/UE bits by writing 1s */ + writeq(ecclog, imc->window + ECC_ERROR_LOG_OFFSET); + + return ecclog; } static void errsts_clear(struct igen6_imc *imc) |