Handle shared IRQ correctly. If IRQ is shared, it typically will show up
as an IRQ with an empty status field. So check in driver and handle it
without crapping out with invalid interrupt message.
Compile tested only.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
module_param(bbuf, int, 0);
MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");
module_param(bbuf, int, 0);
MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");
-static char TLanSignature[] = "TLAN";
+static const char TLanSignature[] = "TLAN";
static const char tlan_banner[] = "ThunderLAN driver v1.15\n";
static int tlan_have_pci;
static int tlan_have_eisa;
static const char tlan_banner[] = "ThunderLAN driver v1.15\n";
static int tlan_have_pci;
static int tlan_have_eisa;
static void TLan_tx_timeout_work(struct work_struct *work);
static int tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);
static void TLan_tx_timeout_work(struct work_struct *work);
static int tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);
-static u32 TLan_HandleInvalid( struct net_device *, u16 );
static u32 TLan_HandleTxEOF( struct net_device *, u16 );
static u32 TLan_HandleStatOverflow( struct net_device *, u16 );
static u32 TLan_HandleRxEOF( struct net_device *, u16 );
static u32 TLan_HandleTxEOF( struct net_device *, u16 );
static u32 TLan_HandleStatOverflow( struct net_device *, u16 );
static u32 TLan_HandleRxEOF( struct net_device *, u16 );
static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
TLan_HandleTxEOF,
TLan_HandleStatOverflow,
TLan_HandleRxEOF,
TLan_HandleTxEOF,
TLan_HandleStatOverflow,
TLan_HandleRxEOF,
int err;
priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION );
int err;
priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION );
- err = request_irq( dev->irq, TLan_HandleInterrupt, IRQF_SHARED, TLanSignature, dev );
+ err = request_irq( dev->irq, TLan_HandleInterrupt, IRQF_SHARED,
+ dev->name, dev );
if ( err ) {
printk(KERN_ERR "TLAN: Cannot open %s because IRQ %d is already in use.\n", dev->name, dev->irq );
if ( err ) {
printk(KERN_ERR "TLAN: Cannot open %s because IRQ %d is already in use.\n", dev->name, dev->irq );
static irqreturn_t TLan_HandleInterrupt(int irq, void *dev_id)
{
static irqreturn_t TLan_HandleInterrupt(int irq, void *dev_id)
{
- u32 ack;
- struct net_device *dev;
- u32 host_cmd;
+ struct net_device *dev = dev_id;
+ TLanPrivateInfo *priv = netdev_priv(dev);
- int type;
- TLanPrivateInfo *priv;
-
- dev = dev_id;
- priv = netdev_priv(dev);
spin_lock(&priv->lock);
host_int = inw( dev->base_addr + TLAN_HOST_INT );
spin_lock(&priv->lock);
host_int = inw( dev->base_addr + TLAN_HOST_INT );
- outw( host_int, dev->base_addr + TLAN_HOST_INT );
-
type = ( host_int & TLAN_HI_IT_MASK ) >> 2;
type = ( host_int & TLAN_HI_IT_MASK ) >> 2;
+ if ( type ) {
+ u32 ack;
+ u32 host_cmd;
- ack = TLanIntVector[type]( dev, host_int );
+ outw( host_int, dev->base_addr + TLAN_HOST_INT );
+ ack = TLanIntVector[type]( dev, host_int );
- if ( ack ) {
- host_cmd = TLAN_HC_ACK | ack | ( type << 18 );
- outl( host_cmd, dev->base_addr + TLAN_HOST_CMD );
+ if ( ack ) {
+ host_cmd = TLAN_HC_ACK | ack | ( type << 18 );
+ outl( host_cmd, dev->base_addr + TLAN_HOST_CMD );
+ }
}
spin_unlock(&priv->lock);
}
spin_unlock(&priv->lock);
+ return IRQ_RETVAL(type);
} /* TLan_HandleInterrupts */
} /* TLan_HandleInterrupts */
*****************************************************************************/
*****************************************************************************/
- /***************************************************************
- * TLan_HandleInvalid
- *
- * Returns:
- * 0
- * Parms:
- * dev Device assigned the IRQ that was
- * raised.
- * host_int The contents of the HOST_INT
- * port.
- *
- * This function handles invalid interrupts. This should
- * never happen unless some other adapter is trying to use
- * the IRQ line assigned to the device.
- *
- **************************************************************/
-
-static u32 TLan_HandleInvalid( struct net_device *dev, u16 host_int )
-{
- /* printk( "TLAN: Invalid interrupt on %s.\n", dev->name ); */
- return 0;
-
-} /* TLan_HandleInvalid */
-
-
/***************************************************************
/***************************************************************