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| author | Tilman Schmidt <tilman@imap.cc> | 2010-03-14 12:58:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-15 16:00:49 -0700 |
| commit | bc35b4e347c047fb1c665bb761ddb22482539f7f (patch) | |
| tree | 4f5b4b1c882b2f36015e0aada78e9307e812a0f9 /drivers/isdn/gigaset/common.c | |
| parent | 4d823be98c5b24d94c7f41a384a4bb60d7848ad5 (diff) | |
| download | linux-bc35b4e347c047fb1c665bb761ddb22482539f7f.tar.gz linux-bc35b4e347c047fb1c665bb761ddb22482539f7f.tar.bz2 linux-bc35b4e347c047fb1c665bb761ddb22482539f7f.zip | |
gigaset: avoid registering CAPI driver more than once
Registering/unregistering the Gigaset CAPI driver when a device is
connected/disconnected causes an Oops when disconnecting two Gigaset
devices in a row, because the same capi_driver structure gets
unregistered twice. Fix by making driver registration/unregistration
a separate operation (empty in the ISDN4Linux case) called when the
main module is loaded/unloaded.
Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Acked-by: Karsten Keil <keil@b1-systems.de>
CC: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/gigaset/common.c')
| -rw-r--r-- | drivers/isdn/gigaset/common.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c index 85de3399a2f2..bdc01cb9f0ab 100644 --- a/drivers/isdn/gigaset/common.c +++ b/drivers/isdn/gigaset/common.c @@ -507,7 +507,7 @@ void gigaset_freecs(struct cardstate *cs) case 2: /* error in initcshw */ /* Deregister from LL */ make_invalid(cs, VALID_ID); - gigaset_isdn_unregister(cs); + gigaset_isdn_unregdev(cs); /* fall through */ case 1: /* error when registering to LL */ @@ -769,7 +769,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->cmdbytes = 0; gig_dbg(DEBUG_INIT, "setting up iif"); - if (!gigaset_isdn_register(cs, modulename)) { + if (!gigaset_isdn_regdev(cs, modulename)) { pr_err("error registering ISDN device\n"); goto error; } @@ -1205,11 +1205,13 @@ static int __init gigaset_init_module(void) gigaset_debuglevel = DEBUG_DEFAULT; pr_info(DRIVER_DESC DRIVER_DESC_DEBUG "\n"); + gigaset_isdn_regdrv(); return 0; } static void __exit gigaset_exit_module(void) { + gigaset_isdn_unregdrv(); } module_init(gigaset_init_module); |