edac, mce: correct corenum reporting

Fix core number reporting with NB MCEs.

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

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index c693fcc2213c..9965b8daca74 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -310,10 +310,9 @@ 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)