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authorAlexey Kardashevskiy <aik@ozlabs.ru>2018-02-09 17:23:58 +1100
committerBjorn Helgaas <bhelgaas@google.com>2018-02-10 11:49:56 -0600
commitc591c2e36ccc9a08f265841d2fd68e35327ab3c4 (patch)
tree9e08bfbbbd4c88bdb011602607a5ae6275299616
parentab8c609356fbe8dbcd44df11e884ce8cddf3739e (diff)
powerpc/pci: Fix broken INTx configuration via OF
59f47eff03a0 ("powerpc/pci: Use of_irq_parse_and_map_pci() helper") replaced of_irq_parse_pci() + irq_create_of_mapping() with of_irq_parse_and_map_pci(), but neglected to capture the virq returned by irq_create_of_mapping(), so virq remained zero, which caused INTx configuration to fail. Save the virq value returned by of_irq_parse_and_map_pci() and correct the virq declaration to match the of_irq_parse_and_map_pci() signature. Fixes: 59f47eff03a0 "powerpc/pci: Use of_irq_parse_and_map_pci() helper" Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
-rw-r--r--arch/powerpc/kernel/pci-common.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 344af823c3c4..4e884db7b213 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -339,7 +339,7 @@ struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
*/
static int pci_read_irq_line(struct pci_dev *pci_dev)
{
- unsigned int virq = 0;
+ int virq;
pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev));
@@ -347,7 +347,8 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
memset(&oirq, 0xff, sizeof(oirq));
#endif
/* Try to get a mapping from the device-tree */
- if (!of_irq_parse_and_map_pci(pci_dev, 0, 0)) {
+ virq = of_irq_parse_and_map_pci(pci_dev, 0, 0);
+ if (virq <= 0) {
u8 line, pin;
/* If that fails, lets fallback to what is in the config