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PCI: mobiveil: Fix devfn check in mobiveil_pcie_valid_device()

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Current check for devfn number in mobiveil_pci_valid_device() is
wrong in that it flags as invalid functions present in PCI device 0
in the root bus while it is perfectly valid to access all functions
in PCI device 0 in the root bus.

Update the check in mobiveil_pci_valid_device() to fix the issue.

Fixes: 9af6bcb11e ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
This commit is contained in:
Hou Zhiqiang 2019-07-05 17:56:39 +08:00 • committed by Lorenzo Pieralisi
commit cbd50b3ca3
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/controller/pcie-mobiveil.c
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@ -283,7 +283,7 @@ static bool mobiveil_pcie_valid_device(struct pci_bus *bus, unsigned int devfn)
* Do not read more than one device on the bus directly
* attached to RC
*/
if ((bus->primary == pcie->root_bus_nr) && (devfn > 0))
if ((bus->primary == pcie->root_bus_nr) && (PCI_SLOT(devfn) > 0))
return false;
return true;