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Diffstat (limited to 'src/kernel/arch/amd64/driver/serial.c')
-rw-r--r--src/kernel/arch/amd64/driver/serial.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/kernel/arch/amd64/driver/serial.c b/src/kernel/arch/amd64/driver/serial.c
index b3bfe29..cf21b61 100644
--- a/src/kernel/arch/amd64/driver/serial.c
+++ b/src/kernel/arch/amd64/driver/serial.c
@@ -72,7 +72,7 @@ static void accept(struct vfs_request *req) {
vfsreq_finish_short(req, valid ? 0 : -1);
break;
case VFSOP_READ:
- if (ring_size((void*)&backlog) == 0) {
+ if (ring_used((void*)&backlog) == 0) {
/* nothing to read, join queue */
assert(!req->postqueue_next);
struct vfs_request **slot = &blocked_on;