From f34d9d2dcb7f17b64124841345b23adc0843e7a5 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Sun, 6 May 2007 14:51:04 -0700 Subject: uml: network interface hotplug error handling This fixes a number of problems associated with network interface hotplug. The userspace initialization function can fail in some cases, but the failure was never passed back to eth_configure, which proceeded with the configuration. This results in a zombie device that is present, but can't work. This is fixed by allowing the initialization routines to return an error, which is checked, and the configuration aborted on failure. eth_configure failed to check for many failures. Even when it did check, it didn't undo whatever initializations has already happened, so a present, but partially initialized and non-working device could result. It now checks everything that can fail, and bails out, undoing whatever had been done. The return value of eth_configure was always ignored, so it is now just void. Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/drivers/slip_user.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/um/drivers/slip_user.c') diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c index 7eddacc53b6..329c072d17d 100644 --- a/arch/um/drivers/slip_user.c +++ b/arch/um/drivers/slip_user.c @@ -17,11 +17,12 @@ #include "os.h" #include "um_malloc.h" -void slip_user_init(void *data, void *dev) +static int slip_user_init(void *data, void *dev) { struct slip_data *pri = data; pri->dev = dev; + return 0; } static int set_up_tty(int fd) -- cgit v1.2.3