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path: root/drivers/isdn/capi/capiutil.c
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Diffstat (limited to 'drivers/isdn/capi/capiutil.c')
-rw-r--r--drivers/isdn/capi/capiutil.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/isdn/capi/capiutil.c b/drivers/isdn/capi/capiutil.c
index 4073d1684d07..b501d76209f0 100644
--- a/drivers/isdn/capi/capiutil.c
+++ b/drivers/isdn/capi/capiutil.c
@@ -207,6 +207,8 @@ static unsigned command_2_index(unsigned c, unsigned sc)
c = 0x9 + (c & 0x0f);
else if (c == 0x41)
c = 0x9 + 0x1;
+ if (c > 0x18)
+ c = 0x00;
return (sc & 3) * (0x9 + 0x9) + c;
}