diff options
| author | Ley Foon Tan | 2019-05-24 10:29:59 +0800 |
|---|---|---|
| committer | Tom Rini | 2019-08-11 16:43:41 -0400 |
| commit | bf9b9813ad6c4727f733828a100267601cef52d2 (patch) | |
| tree | 6395409f21691476b586486895152468549b6505 /drivers | |
| parent | d0e52c6f29efa9b728ed6e7f705d4e92a8ff9d2d (diff) | |
pci: intel: Fix error when enumerating multi-function PCIe device
Hardware return completion status non-zero when read from non exist
function in multi-function PCIe device. Return error will cause PCIe
enumeration fail.
Change it to return 0 and return value 0xffffffff when error.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pcie_intel_fpga.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pci/pcie_intel_fpga.c b/drivers/pci/pcie_intel_fpga.c index e74b35ac163..a096d1c697b 100644 --- a/drivers/pci/pcie_intel_fpga.c +++ b/drivers/pci/pcie_intel_fpga.c @@ -161,8 +161,10 @@ static int tlp_read_packet(struct intel_fpga_pcie *pcie, u32 *value) dw[count++] = cra_readl(pcie, RP_RXCPL_REG); if (ctrl & RP_RXCPL_EOP) { comp_status = TLP_COMP_STATUS(dw[1]); - if (comp_status) - return -EFAULT; + if (comp_status) { + *value = pci_get_ff(PCI_SIZE_32); + return 0; + } if (value && TLP_BYTE_COUNT(dw[1]) == sizeof(u32) && |