Blackfin Serial Driver: disable dma rx interrupt only rather than all irqs

[pandora-kernel.git] / drivers / serial / pmac_zilog.c

diff --git a/drivers/serial/pmac_zilog.c b/drivers/serial/pmac_zilog.c
index ad34885..9c1243f 100644 (file)
--- a/drivers/serial/pmac_zilog.c
+++ b/drivers/serial/pmac_zilog.c
@@ -1538,6 +1538,21 @@ no_dma:
        uap->port.type = PORT_PMAC_ZILOG;
        uap->port.flags = 0;
 
+       /*
+        * Fixup for the port on Gatwick for which the device-tree has
+        * missing interrupts. Normally, the macio_dev would contain
+        * fixed up interrupt info, but we use the device-tree directly
+        * here due to early probing so we need the fixup too.
+        */
+       if (uap->port.irq == NO_IRQ &&
+           np->parent && np->parent->parent &&
+           of_device_is_compatible(np->parent->parent, "gatwick")) {
+               /* IRQs on gatwick are offset by 64 */
+               uap->port.irq = irq_create_mapping(NULL, 64 + 15);
+               uap->tx_dma_irq = irq_create_mapping(NULL, 64 + 4);
+               uap->rx_dma_irq = irq_create_mapping(NULL, 64 + 5);
+       }
+
        /* Setup some valid baud rate information in the register
         * shadows so we don't write crap there before baud rate is
         * first initialized.