diff options
| author | Marc Zyngier <maz@kernel.org> | 2019-08-06 15:23:33 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2019-08-07 14:24:49 +0100 |
| commit | 467a3bb974320a23c0c000559cc54b64e06e9787 (patch) | |
| tree | ac6640a5db2588d17a83e620f76e0e5ef06f71c3 /drivers | |
| parent | daa19fe5b082779962988a5ba9e38509004db3de (diff) | |
| download | linux-467a3bb974320a23c0c000559cc54b64e06e9787.tar.bz2 | |
PCI: hv: Allocate a named fwnode instead of an address-based one
To allocate its fwnode that is then used to allocate an irqdomain,
the driver uses irq_domain_alloc_fwnode(), passing it a VA as an
identifier. This is a rather bad idea, as this address ends up
published in debugfs (and we want to move away from VAs there
anyway).
Instead, let's allocate a named fwnode by using the device GUID as
an identifier. It is allegedly unique, and can be traced back to
the original device.
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/controller/pci-hyperv.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index 40b625458afa..97056f3dd317 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -2521,6 +2521,7 @@ static int hv_pci_probe(struct hv_device *hdev, const struct hv_vmbus_device_id *dev_id) { struct hv_pcibus_device *hbus; + char *name; int ret; /* @@ -2589,7 +2590,14 @@ static int hv_pci_probe(struct hv_device *hdev, goto free_config; } - hbus->sysdata.fwnode = irq_domain_alloc_fwnode(hbus); + name = kasprintf(GFP_KERNEL, "%pUL", &hdev->dev_instance); + if (!name) { + ret = -ENOMEM; + goto unmap; + } + + hbus->sysdata.fwnode = irq_domain_alloc_named_fwnode(name); + kfree(name); if (!hbus->sysdata.fwnode) { ret = -ENOMEM; goto unmap; |