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snap: handle registration error and compile warning

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If this module can't load, it is almost certainly because something else
is already bound to that SAP. So in that case, return the same error code
as other SAP usage, and fail the module load.

Also fixes a compiler warning about printk of non const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2009-02-22 00:03:19 -08:00 committed by David S. Miller
parent 01af4a0e3c
commit 0117cfabe3
1 changed files with 4 additions and 3 deletions
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7
net/802/psnap.c
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@ -95,15 +95,16 @@ static int snap_request(struct datalink_proto *dl,
EXPORT_SYMBOL(register_snap_client); EXPORT_SYMBOL(register_snap_client);
EXPORT_SYMBOL(unregister_snap_client); EXPORT_SYMBOL(unregister_snap_client);
static char snap_err_msg[] __initdata = static const char snap_err_msg[] __initconst =
KERN_CRIT "SNAP - unable to register with 802.2\n"; KERN_CRIT "SNAP - unable to register with 802.2\n";
static int __init snap_init(void) static int __init snap_init(void)
{ {
snap_sap = llc_sap_open(0xAA, snap_rcv); snap_sap = llc_sap_open(0xAA, snap_rcv);
if (!snap_sap) {
if (!snap_sap)
printk(snap_err_msg); printk(snap_err_msg);
return -EBUSY;
}
return 0; return 0;
} }