diff options
| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-09-29 13:26:45 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2011-10-19 17:03:28 -0400 |
| commit | e6599225db36bbdc991d1cc8fbfcacb24f86cdb5 (patch) | |
| tree | af43d45cf1fef289e01af0d317ba82569bd5c91c | |
| parent | 9bb9efe4bab8a877cdde5c6bfbfa202645517571 (diff) | |
| download | linux-e6599225db36bbdc991d1cc8fbfcacb24f86cdb5.tar.gz linux-e6599225db36bbdc991d1cc8fbfcacb24f86cdb5.tar.xz linux-e6599225db36bbdc991d1cc8fbfcacb24f86cdb5.zip | |
xen/irq: If we fail during msi_capability_init return proper error code.
There are three different modes: PV, HVM, and initial domain 0. In all
the cases we would return -1 for failure instead of a proper error code.
Fix this by propagating the error code from the generic IRQ code.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -rw-r--r-- | arch/x86/pci/xen.c | 10 | ||||
| -rw-r--r-- | drivers/xen/events.c | 7 |
2 files changed, 11 insertions, 6 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 1017c7bee388..11a9301d52d4 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -175,8 +175,10 @@ static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) "pcifront-msi-x" : "pcifront-msi", DOMID_SELF); - if (irq < 0) + if (irq < 0) { + ret = irq; goto free; + } i++; } kfree(v); @@ -221,8 +223,10 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) if (msg.data != XEN_PIRQ_MSI_DATA || xen_irq_from_pirq(pirq) < 0) { pirq = xen_allocate_pirq_msi(dev, msidesc); - if (pirq < 0) + if (pirq < 0) { + irq = -ENODEV; goto error; + } xen_msi_compose_msg(dev, pirq, &msg); __write_msi_msg(msidesc, &msg); dev_dbg(&dev->dev, "xen: msi bound to pirq=%d\n", pirq); @@ -244,7 +248,7 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) error: dev_err(&dev->dev, "Xen PCI frontend has not registered MSI/MSI-X support!\n"); - return -ENODEV; + return irq; } #ifdef CONFIG_XEN_DOM0 diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 503614f2c122..212a5c871bf4 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -432,7 +432,8 @@ static int __must_check xen_allocate_irq_dynamic(void) irq = irq_alloc_desc_from(first, -1); - xen_irq_init(irq); + if (irq >= 0) + xen_irq_init(irq); return irq; } @@ -713,7 +714,7 @@ int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc, mutex_lock(&irq_mapping_update_lock); irq = xen_allocate_irq_dynamic(); - if (irq == -1) + if (irq < 0) goto out; irq_set_chip_and_handler_name(irq, &xen_pirq_chip, handle_edge_irq, @@ -729,7 +730,7 @@ out: error_irq: mutex_unlock(&irq_mapping_update_lock); xen_free_irq(irq); - return -1; + return ret; } #endif |