From 32d96c66c088a58d80acf251d9576d0ed2e1b78c Mon Sep 17 00:00:00 2001 From: Aleksa Vuckovic Date: Mon, 5 Dec 2022 00:02:06 +0100 Subject: keyboard.c: not valid len for circular buff --- kernel/src/devices/keyboard.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/src/devices/keyboard.c') diff --git a/kernel/src/devices/keyboard.c b/kernel/src/devices/keyboard.c index 73c052c..549a0ca 100644 --- a/kernel/src/devices/keyboard.c +++ b/kernel/src/devices/keyboard.c @@ -66,7 +66,7 @@ void keyboard_handler() is_pressed[keycode - 128] = false; } - uint32_t len = (uint32_t)(keyboard_buffer->head - keyboard_buffer->tail); + uint32_t len = (uint32_t)(keyboard_buffer->head >= keyboard_buffer->tail ? keyboard_buffer->head - keyboard_buffer->tail : BUFFER_SIZE + keyboard_buffer->head - keyboard_buffer->tail); char* print_buff = kalloc(len + 1); read_buff(keyboard_buffer, print_buff, len); printf("%s", print_buff); -- cgit v1.2.3