spi: pca2xx-pci: Allow MSI

Now that the core is ready for edge-triggered interrupts, we can safely
allow the PCI versions that provide this to enable the feature and,
thus, have less shared interrupts.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index 868452d8e3e1..869f188b02eb 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -227,10 +227,16 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
         ssp = &spi_pdata.ssp;
         ssp->phys_base = pci_resource_start(dev, 0);
         ssp->mmio_base = pcim_iomap_table(dev)[0];
-        ssp->irq = dev->irq;
         ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
         ssp->type = c->type;
 
+        pci_set_master(dev);
+
+        ret = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_ALL_TYPES);
+        if (ret < 0)
+                return ret;
+        ssp->irq = pci_irq_vector(dev, 0);
+
         snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
         ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0,
                                            c->max_clk_rate);