pcmcia: re-work pcmcia_request_irq()

Instead of the old pcmcia_request_irq() interface, drivers may now
choose between:

- calling request_irq/free_irq directly. Use the IRQ from *p_dev->irq.

- use pcmcia_request_irq(p_dev, handler_t); the PCMCIA core will
  clean up automatically on calls to pcmcia_disable_device() or
  device ejection.

- drivers still not capable of IRQF_SHARED (or not telling us so) may
  use the deprecated pcmcia_request_exclusive_irq() for the time
  being; they might receive a shared IRQ nonetheless.

CC: linux-bluetooth@vger.kernel.org
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-serial@vger.kernel.org
CC: alsa-devel@alsa-project.org
CC: linux-usb@vger.kernel.org
CC: linux-ide@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 5 insertions, 12 deletions

diff --git a/drivers/isdn/hardware/avm/avm_cs.c b/drivers/isdn/hardware/avm/avm_cs.c
index 94b796d8405..0d485f6c219 100644
--- a/drivers/isdn/hardware/avm/avm_cs.c
+++ b/drivers/isdn/hardware/avm/avm_cs.c
@@ -107,9 +107,6 @@ static int avmcs_probe(struct pcmcia_device *p_dev)
     p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
     p_dev->io.NumPorts2 = 0;
 
-    /* Interrupt setup */
-    p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
-
     /* General socket configuration */
     p_dev->conf.Attributes = CONF_ENABLE_IRQ;
     p_dev->conf.IntType = INT_MEMORY_AND_IO;
@@ -172,7 +169,7 @@ static int avmcs_configcheck(struct pcmcia_device *p_dev,
 static int avmcs_config(struct pcmcia_device *link)
 {
     local_info_t *dev;
-    int i;
+    int i = -1;
     char devname[128];
     int cardtype;
     int (*addcard)(unsigned int port, unsigned irq);
@@ -190,11 +187,7 @@ static int avmcs_config(struct pcmcia_device *link)
             return -ENODEV;
 
     do {
-        /*
-         * allocate an interrupt line
-         */
-        i = pcmcia_request_irq(link, &link->irq);
-        if (i != 0) {
+        if (!link->irq) {
             /* undo */
             pcmcia_disable_device(link);
             break;
@@ -249,9 +242,9 @@ static int avmcs_config(struct pcmcia_device *link)
         default:
         case AVM_CARDTYPE_B1: addcard = b1pcmcia_addcard_b1; break;
     }
-    if ((i = (*addcard)(link->io.BasePort1, link->irq.AssignedIRQ)) < 0) {
+    if ((i = (*addcard)(link->io.BasePort1, link->irq)) < 0) {
         printk(KERN_ERR "avm_cs: failed to add AVM-%s-Controller at i/o %#x, irq %d\n",
-                dev->node.dev_name, link->io.BasePort1, link->irq.AssignedIRQ);
+                dev->node.dev_name, link->io.BasePort1, link->irq);
         avmcs_release(link);
         return -ENODEV;
     }
@@ -270,7 +263,7 @@ static int avmcs_config(struct pcmcia_device *link)
 
 static void avmcs_release(struct pcmcia_device *link)
 {
-        b1pcmcia_delcard(link->io.BasePort1, link->irq.AssignedIRQ);
+        b1pcmcia_delcard(link->io.BasePort1, link->irq);
         pcmcia_disable_device(link);
 } /* avmcs_release */