stdio: Introduce a new helper stdio_file_to_flags()
Let's deduplicate existing copies by splitting off to a new helper.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
diff --git a/common/stdio.c b/common/stdio.c
index 61fc087..d4acc52 100644
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -28,6 +28,19 @@
struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
+int stdio_file_to_flags(const int file)
+{
+ switch (file) {
+ case stdin:
+ return DEV_FLAGS_INPUT;
+ case stdout:
+ case stderr:
+ return DEV_FLAGS_OUTPUT;
+ default:
+ return -EINVAL;
+ }
+}
+
#if CONFIG_IS_ENABLED(SYS_DEVICE_NULLDEV)
static void nulldev_putc(struct stdio_dev *dev, const char c)
{