Initialize PIN states on module loading

New function set_pins() to set PIN states.

diff --git a/ppin.c b/ppin.c
index 8bffd185d4a52239bad11978d79ed143a0fd0350..52315c838cc77bc5596bace06dc780402d60afee 100644 (file)
--- a/ppin.c
+++ b/ppin.c
@@ -47,6 +47,18 @@ MODULE_AUTHOR("Alexander Barton, alex@barton.de");
 MODULE_DESCRIPTION("Driver for controlling the state of parallel port PINs");
 MODULE_LICENSE("GPL");
 
+void
+set_pins(void)
+{
+       if (parport_claim_or_block(parport_pins) < 0) {
+               printk(KERN_ERR
+                      "Could not claim the " PPIN_DEV " parallel port device\n");
+               return;
+       }
+       parport_write_data(parport_pins->port, pin_state);
+       parport_release(parport_pins);
+}
+
 static void
 ppin_attach(struct parport *port)
 {
@@ -143,15 +155,7 @@ ppin_write(struct file *file, const char *buf, size_t count, loff_t * ppos)
                return count;
        }
 
-       if (parport_claim_or_block(parport_pins) < 0) {
-               printk(KERN_ERR
-                      "Could not claim the " PPIN_DEV " parallel port device\n");
-               return 0;
-       }
-
-       parport_write_data(parport_pins->port, pin_state);
-
-       parport_release(parport_pins);
+       set_pins();
        return count;
 }
 
@@ -204,6 +208,8 @@ ppin_init(void)
        }
 
        printk(KERN_INFO "" PPIN_NAME " driver v%s loaded\n", PPIN_VERSION);
+
+       set_pins();
        return 0;
 }