From: Qiuxu Zhuo <qiuxu.z...@intel.com> commit d84676a9e12817c8435e836911800bdcc67928a0 upstream.
Bit[0] of BAR is always zero. Bit[2:1] and bit[3] of BAR contain the information of 'type' and the 'prefetchable' accordingly. Therefore, mask the lower four bits to retrieve the actual base address of a BAR. Signed-off-by: Qiuxu Zhuo <qiuxu.z...@intel.com> Cc: Tony Luck <tony.l...@intel.com> Cc: linux-edac <linux-e...@vger.kernel.org> Link: http://lkml.kernel.org/r/20170814154813.21619-1-qiuxu.z...@intel.com Signed-off-by: Borislav Petkov <b...@suse.de> Signed-off-by: Liwei Song <liwei.s...@windriver.com> --- drivers/edac/pnd2_edac.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c index a3180a87ff96..2b16b95201eb 100644 --- a/drivers/edac/pnd2_edac.c +++ b/drivers/edac/pnd2_edac.c @@ -241,6 +241,7 @@ static u64 get_sideband_reg_base_addr(void) if (pdev) { pci_read_config_dword(pdev, 0x10, &lo); pci_read_config_dword(pdev, 0x14, &hi); + lo &= 0xfffffff0; pci_dev_put(pdev); return (U64_LSHIFT(hi, 32) | U64_LSHIFT(lo, 0)); } else { -- 2.7.4 -- _______________________________________________ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto
