PCI: tegra: Add missing cleanup in error path and tegra_msi_teardown_irq()
We should call tegra_msi_free() to free the MSI bit if irq_create_mapping()
fails. And we need to dispose the IRQ mapping during IRQ teardown.
[bhelgaas: made irqd_to_hwirq() change suggested by Thierry]
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
index 0fb0fdb..5fbf31e 100644
--- a/drivers/pci/host/pci-tegra.c
+++ b/drivers/pci/host/pci-tegra.c
@@ -1170,8 +1170,10 @@
return hwirq;
irq = irq_create_mapping(msi->domain, hwirq);
- if (!irq)
+ if (!irq) {
+ tegra_msi_free(msi, hwirq);
return -EINVAL;
+ }
irq_set_msi_desc(irq, desc);
@@ -1189,8 +1191,10 @@
{
struct tegra_msi *msi = to_tegra_msi(chip);
struct irq_data *d = irq_get_irq_data(irq);
+ irq_hw_number_t hwirq = irqd_to_hwirq(d);
- tegra_msi_free(msi, d->hwirq);
+ irq_dispose_mapping(irq);
+ tegra_msi_free(msi, hwirq);
}
static struct irq_chip tegra_msi_irq_chip = {