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EDAC/amd64: Read back the scrub rate PCI register on F15h 

[ Upstream commit ee470bb25d ]

Commit:

  da92110dfd ("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: da92110dfd ("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-GZML5np4Vw@mail.gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Borislav Petkov 2020-06-18 20:25:25 +02:00 committed by Greg Kroah-Hartman
parent d0e533584a
commit 58ab86e58b
1 changed files with 2 additions and 0 deletions
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2
drivers/edac/amd64_edac.c
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@ -265,6 +265,8 @@ 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);
break;
case 0x17: