[PATCH] uml: return hotplug errors to host

[powerpc.git] / arch / um / drivers / stdio_console.c

diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 9b2dd0b..3cbfe3a 100644 (file)
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -52,9 +52,9 @@ static struct chan_opts opts = {
        .in_kernel      = 1,
 };
 
-static int con_config(char *str);
+static int con_config(char *str, char **error_out);
 static int con_get_config(char *dev, char *str, int size, char **error_out);
-static int con_remove(int n);
+static int con_remove(int n, char **con_remove);
 
 static struct line_driver driver = {
        .name                   = "UML console",
@@ -87,9 +87,9 @@ static struct line vts[MAX_TTYS] = { LINE_INIT(CONFIG_CON_ZERO_CHAN, &driver),
                                     [ 1 ... MAX_TTYS - 1 ] =
                                     LINE_INIT(CONFIG_CON_CHAN, &driver) };
 
-static int con_config(char *str)
+static int con_config(char *str, char **error_out)
 {
-       return line_config(vts, ARRAY_SIZE(vts), str, &opts);
+       return line_config(vts, ARRAY_SIZE(vts), str, &opts, error_out);
 }
 
 static int con_get_config(char *dev, char *str, int size, char **error_out)
@@ -97,9 +97,9 @@ static int con_get_config(char *dev, char *str, int size, char **error_out)
        return line_get_config(dev, vts, ARRAY_SIZE(vts), str, size, error_out);
 }
 
-static int con_remove(int n)
+static int con_remove(int n, char **error_out)
 {
-       return line_remove(vts, ARRAY_SIZE(vts), n);
+       return line_remove(vts, ARRAY_SIZE(vts), n, error_out);
 }
 
 static int con_open(struct tty_struct *tty, struct file *filp)
@@ -192,7 +192,15 @@ __uml_exitcall(console_exit);
 
 static int console_chan_setup(char *str)
 {
-       return line_setup(vts, ARRAY_SIZE(vts), str);
+       char *error;
+       int ret;
+
+       ret = line_setup(vts, ARRAY_SIZE(vts), str, &error);
+       if(ret < 0)
+               printk(KERN_ERR "Failed to set up console with "
+                      "configuration string \"%s\" : %s\n", str, error);
+
+       return 1;
 }
 __setup("con", console_chan_setup);
 __channel_help(console_chan_setup, "con");