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-rw-r--r--common/stdio.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/common/stdio.c b/common/stdio.c
index c878103..8232815 100644
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -34,6 +34,9 @@ char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
#define CONFIG_SYS_DEVICE_NULLDEV 1
#endif
+#ifdef CONFIG_SYS_STDIO_DEREGISTER
+#define CONFIG_SYS_DEVICE_NULLDEV 1
+#endif
#ifdef CONFIG_SYS_DEVICE_NULLDEV
void nulldev_putc(struct stdio_dev *dev, const char c)
@@ -172,7 +175,7 @@ int stdio_register(struct stdio_dev *dev)
* returns 0 if success, -1 if device is assigned and 1 if devname not found
*/
#ifdef CONFIG_SYS_STDIO_DEREGISTER
-int stdio_deregister_dev(struct stdio_dev *dev)
+int stdio_deregister_dev(struct stdio_dev *dev, int force)
{
int l;
struct list_head *pos;
@@ -181,6 +184,10 @@ int stdio_deregister_dev(struct stdio_dev *dev)
/* get stdio devices (ListRemoveItem changes the dev list) */
for (l=0 ; l< MAX_FILES; l++) {
if (stdio_devices[l] == dev) {
+ if (force) {
+ strcpy(temp_names[l], "nulldev");
+ continue;
+ }
/* Device is assigned -> report error */
return -1;
}
@@ -202,7 +209,7 @@ int stdio_deregister_dev(struct stdio_dev *dev)
return 0;
}
-int stdio_deregister(const char *devname)
+int stdio_deregister(const char *devname, int force)
{
struct stdio_dev *dev;
@@ -211,7 +218,7 @@ int stdio_deregister(const char *devname)
if (!dev) /* device not found */
return -ENODEV;
- return stdio_deregister_dev(dev);
+ return stdio_deregister_dev(dev, force);
}
#endif /* CONFIG_SYS_STDIO_DEREGISTER */