dev/portal: add checks on oflag

It does not make sense to open portal without a flag. One should open a portal with RT_DEVICE_OFLAG_RDWR in most cases.
2013-08-22 15:12:00 +08:00 · 2013-08-22 15:12:00 +08:00 · 824261d3bc
parent b4ba2657bb
commit 824261d3bc
1 changed files with 3 additions and 0 deletions
--- a/components/drivers/src/portal.c
+++ b/components/drivers/src/portal.c
@ -53,6 +53,9 @@ static rt_err_t _portal_open(rt_device_t dev, rt_uint16_t oflag)

    RT_ASSERT(dev);

+    if (!oflag)
+        return -RT_ERROR;
+
    portal = (struct rt_portal_device*)dev;

    if (oflag & RT_DEVICE_OFLAG_RDONLY)