From c6e13b528f5a6c6a6ae260007d4fd14c3dbc5648 Mon Sep 17 00:00:00 2001 From: "Mark A. Grondona" Date: Tue, 18 Oct 2011 11:02:58 -0200 Subject: [PATCH] EDAC: Fix incorrect edac mode reporting in sb_edac The edac driver for Sandy Bridge was found to be reporting "FPM" for edac_mode, which clearly doesn't make sense. It was found that sb_edac.c:get_dimm_config was reusing a variable for both mem_type and edac_type, and thus was overwriting the value after setting it correctly. This patch fixes that issue. Before the patch: /sys/devices/system/edac/mc/mc0/csrow0/edac_mode:FPM /sys/devices/system/edac/mc/mc0/csrow1/edac_mode:FPM /sys/devices/system/edac/mc/mc0/csrow2/edac_mode:FPM /sys/devices/system/edac/mc/mc0/csrow3/edac_mode:FPM After: /sys/devices/system/edac/mc/mc0/csrow0/edac_mode:S4ECD4ED /sys/devices/system/edac/mc/mc0/csrow1/edac_mode:S4ECD4ED /sys/devices/system/edac/mc/mc0/csrow2/edac_mode:S4ECD4ED /sys/devices/system/edac/mc/mc0/csrow3/edac_mode:S4ECD4ED Signed-off-by: Mark A. Grondona Signed-off-by: Mauro Carvalho Chehab --- drivers/edac/sb_edac.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index 8118f12cb8c7..7a402bfbee7d 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -559,6 +559,7 @@ static int get_dimm_config(const struct mem_ctl_info *mci) unsigned long last_page = 0; u32 reg; enum edac_type mode; + enum mem_type mtype; pci_read_config_dword(pvt->pci_br, SAD_TARGET, ®); pvt->sbridge_dev->source_id = SOURCE_ID(reg); @@ -601,10 +602,10 @@ static int get_dimm_config(const struct mem_ctl_info *mci) if (IS_RDIMM_ENABLED(reg)) { /* FIXME: Can also be LRDIMM */ debugf0("Memory is registered\n"); - mode = MEM_RDDR3; + mtype = MEM_RDDR3; } else { debugf0("Memory is unregistered\n"); - mode = MEM_DDR3; + mtype = MEM_DDR3; } /* On all supported DDR3 DIMM types, there are 8 banks available */ @@ -643,7 +644,7 @@ static int get_dimm_config(const struct mem_ctl_info *mci) csr->dtype = (banks == 8) ? DEV_X8 : DEV_X4; csr->ce_count = 0; csr->ue_count = 0; - csr->mtype = mode; + csr->mtype = mtype; csr->edac_mode = mode; csr->nr_channels = 1; csr->channels[0].chan_idx = i; -- 2.20.1