Changeset f2d88f3 in mainline for uspace/srv/hw/char/s3c24xx_uart/s3c24xx_uart.c

Timestamp:

2019-01-04T21:22:17Z (6 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/srv/hw/char/s3c24xx_uart/s3c24xx_uart.c (modified) (3 diffs)

uspace/srv/hw/char/s3c24xx_uart/s3c24xx_uart.c

@@ -69 +69 @@
 static void s3c24xx_uart_sendb(s3c24xx_uart_t *, uint8_t);
 
-static errno_t s3c24xx_uart_read(chardev_srv_t *, void *, size_t, size_t *);
+static errno_t s3c24xx_uart_read(chardev_srv_t *, void *, size_t, size_t *,
+    chardev_flags_t);
 static errno_t s3c24xx_uart_write(chardev_srv_t *, const void *, size_t, size_t *);
 
@@ -199 +200 @@
 
 static errno_t s3c24xx_uart_read(chardev_srv_t *srv, void *buf, size_t size,
-    size_t *nread)
+    size_t *nread, chardev_flags_t flags)
 {
         s3c24xx_uart_t *uart = (s3c24xx_uart_t *) srv->srvs->sarg;
@@ -208 +209 @@
         fibril_mutex_lock(&uart->buf_lock);
 
-        while (circ_buf_nused(&uart->cbuf) == 0)
+        while ((flags & chardev_f_nonblock) == 0 &&
+            circ_buf_nused(&uart->cbuf) == 0)
                 fibril_condvar_wait(&uart->buf_cv, &uart->buf_lock);