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From: Tilman Schmidt on 23 May 2010 07:30
Dummy implementations for the optional CAPI controller operations
load_firmware and reset_ctr can cause userspace callers to hang
indefinitely. It's better not to implement them at all.

Impact: bugfix
Signed-off-by: Tilman Schmidt <tilman(a)imap.cc>
---
drivers/isdn/gigaset/capi.c | 28 ++--------------------------
1 files changed, 2 insertions(+), 26 deletions(-)

diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 964a55f..e72f86b 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -933,30 +933,6 @@ void gigaset_isdn_stop(struct cardstate *cs)
*/

/*
- * load firmware
- */
-static int gigaset_load_firmware(struct capi_ctr *ctr, capiloaddata *data)
-{
- struct cardstate *cs = ctr->driverdata;
-
- /* AVM specific operation, not needed for Gigaset -- ignore */
- dev_notice(cs->dev, "load_firmware ignored\n");
-
- return 0;
-}
-
-/*
- * reset (deactivate) controller
- */
-static void gigaset_reset_ctr(struct capi_ctr *ctr)
-{
- struct cardstate *cs = ctr->driverdata;
-
- /* AVM specific operation, not needed for Gigaset -- ignore */
- dev_notice(cs->dev, "reset_ctr ignored\n");
-}
-
-/*
* register CAPI application
*/
static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl,
@@ -2213,8 +2189,8 @@ int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
iif->ctr.driverdata = cs;
strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name));
iif->ctr.driver_name = "gigaset";
- iif->ctr.load_firmware = gigaset_load_firmware;
- iif->ctr.reset_ctr = gigaset_reset_ctr;
+ iif->ctr.load_firmware = NULL;
+ iif->ctr.reset_ctr = NULL;
iif->ctr.register_appl = gigaset_register_appl;
iif->ctr.release_appl = gigaset_release_appl;
iif->ctr.send_message = gigaset_send_message;
--
1.6.5.3.298.g39add

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