From: Borislav Petkov bp@suse.de
[ Upstream commit ee470bb25d0dcdf126f586ec0ae6dca66cb340a4 ]
Commit:
da92110dfdfa ("EDAC, amd64_edac: Extend scrub rate support to F15hM60h")
added support for F15h, model 0x60 CPUs but in doing so, missed to read back SCRCTRL PCI config register on F15h CPUs which are *not* model 0x60. Add that read so that doing
$ cat /sys/devices/system/edac/mc/mc0/sdram_scrub_rate
can show the previously set DRAM scrub rate.
Fixes: da92110dfdfa ("EDAC, amd64_edac: Extend scrub rate support to F15hM60h") Reported-by: Anders Andersson pipatron@gmail.com Signed-off-by: Borislav Petkov bp@suse.de Cc: stable@vger.kernel.org #v4.4.. Link: https://lkml.kernel.org/r/CAKkunMbNWppx_i6xSdDHLseA2QQmGJqj_crY=NF-GZML5np4V... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/edac/amd64_edac.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 1c5f23224b3cb..020dd07d1c23a 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -243,6 +243,8 @@ static int get_scrub_rate(struct mem_ctl_info *mci)
if (pvt->model == 0x60) amd64_read_pci_cfg(pvt->F2, F15H_M60H_SCRCTRL, &scrubval); + else + amd64_read_pci_cfg(pvt->F3, SCRCTRL, &scrubval); } else amd64_read_pci_cfg(pvt->F3, SCRCTRL, &scrubval);