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isdn/gigaset: improve error handling querying firmware version

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An out-of-place "OK" response to the "AT+GMR" (get firmware version)
command turns out to be, more often than not, a delayed response to
a previous command rather than an actual error, so continue waiting
for the version number in that case.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
CC: stable <stable@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tilman Schmidt 2012-04-25 13:02:20 +00:00 committed by David S. Miller
parent 62a1cfe052
commit e055d03dc0
1 changed files with 3 additions and 1 deletions
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4
drivers/isdn/gigaset/ev-layer.c
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@ -190,6 +190,7 @@ struct reply_t gigaset_tab_nocid[] =
ACT_INIT} },
{RSP_OK, 121, 121, -1, 0, 0, {ACT_GOTVER,
ACT_INIT} },
{RSP_NONE, 121, 121, -1, 120, 0, {ACT_GETSTRING} },
/* leave dle mode */
{RSP_INIT, 0, 0, SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"},
@ -1314,8 +1315,9 @@ static void do_action(int action, struct cardstate *cs,
s = ev->ptr;
if (!strcmp(s, "OK")) {
/* OK without version string: assume old response */
*p_genresp = 1;
*p_resp_code = RSP_ERROR;
*p_resp_code = RSP_NONE;
break;
}