[PATCH] ser_a2232.c bug removed: handles "IRQ request denied" case

[The AmigaLinux A2232 Driver Project <A2232@gmx.net>]

This patch handles the case in which the request for the
vertical blank interrupt could not be granted. Thanks to
Nazia Zaman for spotting it.

Applies to latest 2.6.x kernels.


--- linux/drivers/char/ser_a2232.c.org	2007-08-30 15:41:25.000000000 +0100
+++ linux/drivers/char/ser_a2232.c	2007-08-30 15:46:17.000000000 +0100
@@ -787,7 +787,7 @@ static int __init a2232board_init(void)

 	}

-	printk("Total: %d A2232 boards initialized.\n", nr_a2232); /* Some status report if no card was found */
+	printk("Total: %d A2232 boards detected.\n", nr_a2232); /* Some status report if no card was found */

 	a2232_init_portstructs();

@@ -795,9 +795,13 @@ static int __init a2232board_init(void)
 		a2232_init_drivers also registers the drivers. Must be here because all boards
 		have to be detected first.
 	*/
-	if (a2232_init_drivers()) return -ENODEV; // maybe we should use a different -Exxx?
+	if (a2232_init_drivers())
+		return -ENODEV; // maybe we should use a different -Exxx?

-	request_irq(IRQ_AMIGA_VERTB, a2232_vbl_inter, 0, "A2232 serial VBL", a2232_driver_ID);
+	if (request_irq(IRQ_AMIGA_VERTB, a2232_vbl_inter, 0, "A2232 serial VBL", a2232_driver_ID))
+		return -ENODEV;
+
+	printk("A2232 driver initialized successfully.\n");
 	return 0;
 }



Signed-off-by: Enver Haase <a2232@gmx.net>
-
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