commit: a3b93121430c7b46c2895a7744261be107ccdf7f From: Joerg Roedel <[email protected]> Date: Thu, 12 Apr 2012 12:49:26 +0200 Subject: iommu/amd: Check for the right TLP prefix bit
Unfortunatly the PRI spec changed and moved the TLP-prefix-required bit to a different location. This patch makes the necessary change in the AMD IOMMU driver. Regressions are not expected because all hardware implementing the PRI capability sets this bit to zero anyway. Cc: [email protected] # v3.3 Signed-off-by: Joerg Roedel <[email protected]> --- drivers/iommu/amd_iommu.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index a5bee8e..08f3eec 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2035,20 +2035,20 @@ out_err: } /* FIXME: Move this to PCI code */ -#define PCI_PRI_TLP_OFF (1 << 2) +#define PCI_PRI_TLP_OFF (1 << 15) bool pci_pri_tlp_required(struct pci_dev *pdev) { - u16 control; + u16 status; int pos; pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_PRI); if (!pos) return false; - pci_read_config_word(pdev, pos + PCI_PRI_CTRL, &control); + pci_read_config_word(pdev, pos + PCI_PRI_STATUS, &status); - return (control & PCI_PRI_TLP_OFF) ? true : false; + return (status & PCI_PRI_TLP_OFF) ? true : false; } /* -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
