diff options
Diffstat (limited to 'kernel/drivers/mouse.c')
| -rw-r--r-- | kernel/drivers/mouse.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/drivers/mouse.c b/kernel/drivers/mouse.c index 5c481da..8545099 100644 --- a/kernel/drivers/mouse.c +++ b/kernel/drivers/mouse.c @@ -2,6 +2,7 @@ #include <boot.h> #include <cpu.h> +#include <errno.h> #include <fs.h> #include <interrupts.h> #include <mem.h> @@ -83,7 +84,7 @@ static u8 mouse_serial_read(void) return inb(0x60); } -static u8 mouse_ready(void) +static s32 mouse_ready(void) { return !stack_empty(queue); } @@ -92,7 +93,7 @@ static s32 mouse_read(void *buf, u32 offset, u32 count, struct device *dev) { (void)dev; if (stack_empty(queue)) - return -1; + return -EINVAL; struct event_mouse *e = stack_pop(queue); memcpy(buf, (u8 *)e + offset, MIN(count, sizeof(*e))); |