do not truncate irq number for icom adapter

irq values are u32, not u8. Large irq numbers will be truncated,
free_irq may free a different irq.

Remove incorrectly sized struct member and use the one from pci_dev.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 2 insertions, 4 deletions

diff --git a/drivers/serial/icom.c b/drivers/serial/icom.c
index 41431d0d5512..d7aaf7648490 100644
--- a/drivers/serial/icom.c
+++ b/drivers/serial/icom.c
@@ -1473,7 +1473,7 @@ static void icom_remove_adapter(struct icom_adapter *icom_adapter)
                 }
         }
 
-        free_irq(icom_adapter->irq_number, (void *) icom_adapter);
+        free_irq(icom_adapter->pci_dev->irq, (void *) icom_adapter);
         iounmap(icom_adapter->base_addr);
         icom_free_adapter(icom_adapter);
         pci_release_regions(icom_adapter->pci_dev);
@@ -1539,7 +1539,6 @@ static int __devinit icom_probe(struct pci_dev *dev,
         }
 
          icom_adapter->base_addr_pci = pci_resource_start(dev, 0);
-         icom_adapter->irq_number = dev->irq;
          icom_adapter->pci_dev = dev;
          icom_adapter->version = ent->driver_data;
          icom_adapter->subsystem_id = ent->subdevice;
@@ -1570,7 +1569,7 @@ static int __devinit icom_probe(struct pci_dev *dev,
                 icom_port = &icom_adapter->port_info[index];
 
                 if (icom_port->status == ICOM_PORT_ACTIVE) {
-                        icom_port->uart_port.irq = icom_port->adapter->irq_number;
+                        icom_port->uart_port.irq = icom_port->adapter->pci_dev->irq;
                         icom_port->uart_port.type = PORT_ICOM;
                         icom_port->uart_port.iotype = UPIO_MEM;
                         icom_port->uart_port.membase =
diff --git a/drivers/serial/icom.h b/drivers/serial/icom.h
index 798f1ef23712..e8578d8cd35e 100644
--- a/drivers/serial/icom.h
+++ b/drivers/serial/icom.h
@@ -258,7 +258,6 @@ struct icom_port {
 struct icom_adapter {
         void __iomem * base_addr;
         unsigned long base_addr_pci;
-        unsigned char irq_number;
         struct pci_dev *pci_dev;
         struct icom_port port_info[4];
         int index;