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-rw-r--r--drivers/isdn/capi/kcapi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/isdn/capi/kcapi.c b/drivers/isdn/capi/kcapi.c
index bd00dce..bde3c88 100644
--- a/drivers/isdn/capi/kcapi.c
+++ b/drivers/isdn/capi/kcapi.c
@@ -1147,6 +1147,12 @@ load_unlock_out:
if (ctr->state == CAPI_CTR_DETECTED)
goto reset_unlock_out;
+ if (ctr->reset_ctr == NULL) {
+ printk(KERN_DEBUG "kcapi: reset: no reset function\n");
+ retval = -ESRCH;
+ goto reset_unlock_out;
+ }
+
ctr->reset_ctr(ctr);
retval = wait_on_ctr_state(ctr, CAPI_CTR_DETECTED);
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