after switching the position of 4 in column_pins[10] the problem persisted, i have added lines at the end of init_skey() that explictly set those two pins as input, this is to help debug the issue]

1 files changed, 3 insertions, 0 deletions

diff --git a/skey.c b/skey.c
index 590b682..0ffe0cd 100644
--- a/skey.c
+++ b/skey.c
@@ -192,6 +192,9 @@ static int  __init skey_init (void) {
 	printk("skey: setting up update thread...\n");
 	update_task = kthread_run(skey_update_thread, NULL, "skey_update_thread");
 	printk(KERN_INFO "skey: module finished initiating\n");
+	//explicitly sets pin 4 and 15 to be inputs.
+	gpio_direction_input(4);
+	gpio_direction_input(15);
 	return 0;
 }
 /*