X-Git-Url: http://rtime.felk.cvut.cz/gitweb/lincan.git/blobdiff_plain/95c031e101c74ae6472a7e538f3128f67a490082..eed5b50bfb33910427fcf790e68dd51c64f42f46:/lincan/src/i82527.c

diff --git a/lincan/src/i82527.c b/lincan/src/i82527.c
index d11a79b..00dd885 100644
--- a/lincan/src/i82527.c
+++ b/lincan/src/i82527.c
@@ -618,6 +618,7 @@ int i82527_irq_handler(int irq, struct canchip_t *chip)
 	unsigned irq_register;
 	unsigned object;
 	struct msgobj_t *obj;
+	int loop_cnt=CHIP_MAX_IRQLOOP;
 
 	/*put_reg=device->hwspecops->write_register;*/
 	/*get_reg=device->hwspecops->read_register;*/
@@ -632,6 +633,12 @@ int i82527_irq_handler(int irq, struct canchip_t *chip)
 
 	do {
 
+		if(!loop_cnt--) {
+			CANMSG("i82527_irq_handler IRQ %d stuck\n",irq);
+			CANMSG("i82527_irq_register 0x%x\n",irq_register);
+			return CANCHIP_IRQ_STUCK;
+		}
+		
 		DEBUGMSG("i82527: iIRQ 0x%02x\n",irq_register);
 		
 		if (irq_register == 0x01) {
@@ -660,7 +667,7 @@ int i82527_irq_handler(int irq, struct canchip_t *chip)
 
 			i82527_irq_read_handler(chip, obj, object); 
 		}
-
+		
 	} while((irq_register=i82527_seg_read_reg(chip, iIRQ)) != 0);
 
 	return CANCHIP_IRQ_HANDLED;