driver/ps2,serial: handle all pending reads at the same time

1 files changed, 5 insertions, 0 deletions

diff --git a/src/kernel/arch/amd64/driver/util.h b/src/kernel/arch/amd64/driver/util.h
index d89992a..06ca672 100644
--- a/src/kernel/arch/amd64/driver/util.h
+++ b/src/kernel/arch/amd64/driver/util.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <shared/container/ring.h>
 #include <stdbool.h>
 #include <stddef.h>
 
@@ -14,3 +15,7 @@ int req_readcopy(struct vfs_request *req, const void *buf, size_t len);
 
 void postqueue_join(struct vfs_request **queue, struct vfs_request *req);
 bool postqueue_pop(struct vfs_request **queue, void (*accept)(struct vfs_request *));
+
+/** If there are any pending read requests, and the ring buffer isn't empty, fulfill them
+ * all with a single read. */
+void postqueue_ringreadall(struct vfs_request **queue, ring_t *r);