1 files changed, 7 insertions, 17 deletions

diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index c693fcc2213c..8fc91a019620 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -299,6 +299,12 @@ void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
         if (!handle_errors)
                 return;
 
+        /*
+         * GART TLB error reporting is disabled by default. Bail out early.
+         */
+        if (TLB_ERROR(ec) && !report_gart_errors)
+                return;
+
         pr_emerg(" Northbridge Error, node %d", node_id);
 
         /*
@@ -310,10 +316,9 @@ void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
                 if (regs->nbsh & K8_NBSH_ERR_CPU_VAL)
                         pr_cont(", core: %u\n", (u8)(regs->nbsh & 0xf));
         } else {
-                pr_cont(", core: %d\n", ilog2((regs->nbsh & 0xf)));
+                pr_cont(", core: %d\n", fls((regs->nbsh & 0xf) - 1));
         }
 
-
         pr_emerg("%s.\n", EXT_ERR_MSG(xec));
 
         if (BUS_ERROR(ec) && nb_bus_decoder)
@@ -333,21 +338,6 @@ static void amd_decode_fr_mce(u64 mc5_status)
 static inline void amd_decode_err_code(unsigned int ec)
 {
         if (TLB_ERROR(ec)) {
-                /*
-                 * GART errors are intended to help graphics driver developers
-                 * to detect bad GART PTEs. It is recommended by AMD to disable
-                 * GART table walk error reporting by default[1] (currently
-                 * being disabled in mce_cpu_quirks()) and according to the
-                 * comment in mce_cpu_quirks(), such GART errors can be
-                 * incorrectly triggered. We may see these errors anyway and
-                 * unless requested by the user, they won't be reported.
-                 *
-                 * [1] section 13.10.1 on BIOS and Kernel Developers Guide for
-                 *     AMD NPT family 0Fh processors
-                 */
-                if (!report_gart_errors)
-                        return;
-
                 pr_emerg(" Transaction: %s, Cache Level %s\n",
                          TT_MSG(ec), LL_MSG(ec));
         } else if (MEM_ERROR(ec)) {