X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/95c031e101c74ae6472a7e538f3128f67a490082..c1f8d2586d9c8219ed3a92004b207d0ee81689f4:/lincan/src/setup.c

diff --git a/lincan/src/setup.c b/lincan/src/setup.c
index c77d03c..167ec2b 100644
--- a/lincan/src/setup.c
+++ b/lincan/src/setup.c
@@ -568,6 +568,16 @@ int init_hwspecops(struct candevice_t *candev, int *irqnum_p)
 
 #ifndef CAN_WITH_RTL
 
+/**
+ * can_default_irq_dispatch - the first level interrupt dispatch handler
+ * @irq: interrupt vector number, this value is system specific
+ * @dev_id: driver private pointer registered at time of request_irq() call.
+ *	The CAN driver uses this pointer to store relationship of interrupt
+ *	to chip state structure - @struct canchip_t
+ * @regs: system dependent value pointing to registers stored in exception frame
+ * 
+ * File: src/setup.c
+ */
 can_irqreturn_t can_default_irq_dispatch(int irq, void *dev_id, struct pt_regs *regs)
 {
 	int retval;
@@ -589,6 +599,8 @@ int can_chip_setup_irq(struct canchip_t *chip)
 		return -1;
 	if(!chip->chipspecops->irq_handler)
 		return 0;
+	if(chip->flags & CHIP_IRQ_CUSTOM)
+		return 1;
 			
 	if ((chip->flags & CHIP_IRQ_VME) == 0) {
 		if (request_irq(chip->chip_irq,can_default_irq_dispatch,SA_SHIRQ,DEVICE_NAME,chip))
@@ -620,6 +632,9 @@ int can_chip_setup_irq(struct canchip_t *chip)
 void can_chip_free_irq(struct canchip_t *chip)
 {
 	if((chip->flags & CHIP_IRQ_SETUP) && (chip->chip_irq>=0)) {
+		if(chip->flags & CHIP_IRQ_CUSTOM)
+			return;
+
 		if ((chip->flags & CHIP_IRQ_VME) == 0)
 			free_irq(chip->chip_irq, chip);
 		else {