Changeset f2d88f3 in mainline for uspace/drv/char/i8042/i8042.c

Timestamp:

2019-01-04T21:22:17Z (5 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

af7b85b

Parents:

06412ba

Message:

Add forgotten changes to enable non-blocking chardev read

File:

• uspace/drv/char/i8042/i8042.c (modified) (3 diffs)

uspace/drv/char/i8042/i8042.c

@@ -67 +67 @@
 
 static void i8042_char_conn(ipc_call_t *, void *);
-static errno_t i8042_read(chardev_srv_t *, void *, size_t, size_t *);
+static errno_t i8042_read(chardev_srv_t *, void *, size_t, size_t *,
+    chardev_flags_t);
 static errno_t i8042_write(chardev_srv_t *, const void *, size_t, size_t *);
 
@@ -385 +386 @@
  */
 static errno_t i8042_read(chardev_srv_t *srv, void *dest, size_t size,
-    size_t *nread)
+    size_t *nread, chardev_flags_t flags)
 {
         i8042_port_t *port = (i8042_port_t *)srv->srvs->sarg;
@@ -394 +395 @@
         fibril_mutex_lock(&port->buf_lock);
 
-        while (circ_buf_nused(&port->cbuf) == 0)
+        while ((flags & chardev_f_nonblock) == 0 &&
+            circ_buf_nused(&port->cbuf) == 0)
                 fibril_condvar_wait(&port->buf_cv, &port->buf_lock);