Fix a NULL dereference when unplugging a device. The default value of
err_msg wants to be "" in case the driver doesn't modify it.
Signed-off-by: Jeff Dike <[EMAIL PROTECTED]>
--
arch/um/drivers/mconsole_kern.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-2.6.21-mm/arch/um/drivers/mconsole_kern.c
===================================================================
--- linux-2.6.21-mm.orig/arch/um/drivers/mconsole_kern.c 2007-03-27
11:35:47.000000000 -0400
+++ linux-2.6.21-mm/arch/um/drivers/mconsole_kern.c 2007-03-27
11:46:28.000000000 -0400
@@ -614,6 +614,9 @@ void mconsole_remove(struct mc_request *
err_msg = NULL;
err = (*dev->remove)(n, &err_msg);
switch(err){
+ case 0:
+ err_msg = "";
+ break;
case -ENODEV:
if(err_msg == NULL)
err_msg = "Device doesn't exist";
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