diff options
Diffstat (limited to 'kernel/drivers/keyboard.c')
| -rw-r--r-- | kernel/drivers/keyboard.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/drivers/keyboard.c b/kernel/drivers/keyboard.c index dbee8e1..79cd579 100644 --- a/kernel/drivers/keyboard.c +++ b/kernel/drivers/keyboard.c @@ -2,6 +2,7 @@ #include <cpu.h> #include <def.h> +#include <errno.h> #include <fs.h> #include <interrupts.h> #include <keyboard.h> @@ -62,9 +63,9 @@ static void keyboard_rate(void) static s32 keyboard_read(void *buf, u32 offset, u32 count, struct device *dev) { - (void)dev; + UNUSED(dev); if (stack_empty(queue)) - return -1; + return -EINVAL; struct event_keyboard *e = stack_pop(queue); memcpy(buf, (u8 *)e + offset, MIN(count, sizeof(*e))); @@ -72,7 +73,7 @@ static s32 keyboard_read(void *buf, u32 offset, u32 count, struct device *dev) return MIN(count, sizeof(*e)); } -static u8 keyboard_ready(void) +static s32 keyboard_ready(void) { return !stack_empty(queue); } |