From: Borislav Petkov Date: Thu, 18 Jun 2020 18:25:25 +0000 (+0200) Subject: EDAC/amd64: Read back the scrub rate PCI register on F15h X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5960439a078501a0ee0947534ca66ed18a3ea26e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git EDAC/amd64: Read back the scrub rate PCI register on F15h [ 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 Signed-off-by: Borislav Petkov Cc: #v4.4.. Link: https://lkml.kernel.org/r/CAKkunMbNWppx_i6xSdDHLseA2QQmGJqj_crY=NF-GZML5np4Vw@mail.gmail.com Signed-off-by: Sasha Levin --- diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 1c5f23224b3c..020dd07d1c23 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);