From 45f4d3ab3ee8d12471e47057ea4d0d86167b25a0 Mon Sep 17 00:00:00 2001 From: Hubert Chrzaniuk Date: Fri, 11 Dec 2015 14:21:22 +0100 Subject: [PATCH] EDAC, sb_edac: Set fixed DIMM width on Xeon Knights Landing Knights Landing does not come with register that could be used to fetch DIMM width. However the value is fixed for this architecture so it can be hardcoded. Signed-off-by: Hubert Chrzaniuk Cc: Doug Thompson Cc: Mauro Carvalho Chehab Cc: linux-edac Cc: lukasz.anaczkowski@intel.com Link: http://lkml.kernel.org/r/1449840082-18673-1-git-send-email-hubert.chrzaniuk@intel.com Signed-off-by: Borislav Petkov --- drivers/edac/sb_edac.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index b3d924da5985..e438ee5b433f 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -924,6 +924,12 @@ out: return mtype; } +static enum dev_type knl_get_width(struct sbridge_pvt *pvt, u32 mtr) +{ + /* for KNL value is fixed */ + return DEV_X16; +} + static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr) { /* there's no way to figure out */ @@ -3393,7 +3399,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type) pvt->info.interleave_list = knl_interleave_list; pvt->info.max_interleave = ARRAY_SIZE(knl_interleave_list); pvt->info.interleave_pkg = ibridge_interleave_pkg; - pvt->info.get_width = ibridge_get_width; + pvt->info.get_width = knl_get_width; mci->ctl_name = kasprintf(GFP_KERNEL, "Knights Landing Socket#%d", mci->mc_idx); -- 2.34.1