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Merge branch 'isdn'

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Tilman Schmidt says:

====================
Coverity patches for drivers/isdn

Here's a series of patches for the ISDN CAPI subsystem and the
Gigaset ISDN driver.
Patches 1 to 7 are specific fixes for Coverity warnings.
Patches 8 to 11 fix related problems with the handling of invalid
CAPI command codes I noticed while working on this.
Patch 12 fixes an unrelated problem I noticed during the subsequent
regression tests.
It would be great if these could still be merged.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2014-10-14 15:05:39 -04:00
commit 14cee8e377
7 changed files with 265 additions and 81 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/isdn/capi/capidrv.c
View File

@ -506,7 +506,10 @@ static void send_message(capidrv_contr *card, _cmsg *cmsg)
struct sk_buff *skb;
size_t len;
capi_cmsg2message(cmsg, cmsg->buf);
if (capi_cmsg2message(cmsg, cmsg->buf)) {
printk(KERN_ERR "capidrv::send_message: parser failure\n");
return;
}
len = CAPIMSG_LEN(cmsg->buf);
skb = alloc_skb(len, GFP_ATOMIC);
if (!skb) {
@ -1578,7 +1581,12 @@ static _cmsg s_cmsg;
static void capidrv_recv_message(struct capi20_appl *ap, struct sk_buff *skb)
{
capi_message2cmsg(&s_cmsg, skb->data);
if (capi_message2cmsg(&s_cmsg, skb->data)) {
printk(KERN_ERR "capidrv: applid=%d: received invalid message\n",
ap->applid);
kfree_skb(skb);
return;
}
if (debugmode > 3) {
_cdebbuf *cdb = capi_cmsg2str(&s_cmsg);
@ -1903,7 +1911,11 @@ static int capidrv_command(isdn_ctrl *c, capidrv_contr *card)
NULL, /* Useruserdata */
NULL /* Facilitydataarray */
);
capi_cmsg2message(&cmdcmsg, cmdcmsg.buf);
if (capi_cmsg2message(&cmdcmsg, cmdcmsg.buf)) {
printk(KERN_ERR "capidrv-%d: capidrv_command: parser failure\n",
card->contrnr);
return -EINVAL;
}
plci_change_state(card, bchan->plcip, EV_PLCI_CONNECT_RESP);
send_message(card, &cmdcmsg);
return 0;
@ -2090,7 +2102,11 @@ static int if_sendbuf(int id, int channel, int doack, struct sk_buff *skb)
if (capidrv_add_ack(nccip, datahandle, doack ? (int)skb->len : -1) < 0)
return 0;
capi_cmsg2message(&sendcmsg, sendcmsg.buf);
if (capi_cmsg2message(&sendcmsg, sendcmsg.buf)) {
printk(KERN_ERR "capidrv-%d: if_sendbuf: parser failure\n",
card->contrnr);
return -EINVAL;
}
msglen = CAPIMSG_LEN(sendcmsg.buf);
if (skb_headroom(skb) < msglen) {
struct sk_buff *nskb = skb_realloc_headroom(skb, msglen);

41
drivers/isdn/capi/capiutil.c
View File

@ -207,9 +207,24 @@ 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;
}
/**
* capi_cmd2par() - find parameter string for CAPI 2.0 command/subcommand
* @cmd: command number
* @subcmd: subcommand number
*
* Return value: static string, NULL if command/subcommand unknown
*/
static unsigned char *capi_cmd2par(u8 cmd, u8 subcmd)
{
return cpars[command_2_index(cmd, subcmd)];
}
/*-------------------------------------------------------*/
#define TYP (cdef[cmsg->par[cmsg->p]].typ)
#define OFF (((u8 *)cmsg) + cdef[cmsg->par[cmsg->p]].off)
@ -302,7 +317,9 @@ unsigned capi_cmsg2message(_cmsg *cmsg, u8 *msg)
cmsg->m = msg;
cmsg->l = 8;
cmsg->p = 0;
cmsg->par = cpars[command_2_index(cmsg->Command, cmsg->Subcommand)];
cmsg->par = capi_cmd2par(cmsg->Command, cmsg->Subcommand);
if (!cmsg->par)
return 1; /* invalid command/subcommand */
pars_2_message(cmsg);
@ -375,7 +392,9 @@ unsigned capi_message2cmsg(_cmsg *cmsg, u8 *msg)
cmsg->p = 0;
byteTRcpy(cmsg->m + 4, &cmsg->Command);
byteTRcpy(cmsg->m + 5, &cmsg->Subcommand);
cmsg->par = cpars[command_2_index(cmsg->Command, cmsg->Subcommand)];
cmsg->par = capi_cmd2par(cmsg->Command, cmsg->Subcommand);
if (!cmsg->par)
return 1; /* invalid command/subcommand */
message_2_pars(cmsg);
@ -470,12 +489,17 @@ static char *mnames[] =
* @cmd: command number
* @subcmd: subcommand number
*
* Return value: static string, NULL if command/subcommand unknown
* Return value: static string
*/
char *capi_cmd2str(u8 cmd, u8 subcmd)
{
return mnames[command_2_index(cmd, subcmd)];
char *result;
result = mnames[command_2_index(cmd, subcmd)];
if (result == NULL)
result = "INVALID_COMMAND";
return result;
}
@ -625,6 +649,9 @@ static _cdebbuf *printstruct(_cdebbuf *cdb, u8 *m)
static _cdebbuf *protocol_message_2_pars(_cdebbuf *cdb, _cmsg *cmsg, int level)
{
if (!cmsg->par)
return NULL; /* invalid command/subcommand */
for (; TYP != _CEND; cmsg->p++) {
int slen = 29 + 3 - level;
int i;
@ -759,10 +786,10 @@ _cdebbuf *capi_message2str(u8 *msg)
cmsg->p = 0;
byteTRcpy(cmsg->m + 4, &cmsg->Command);
byteTRcpy(cmsg->m + 5, &cmsg->Subcommand);
cmsg->par = cpars[command_2_index(cmsg->Command, cmsg->Subcommand)];
cmsg->par = capi_cmd2par(cmsg->Command, cmsg->Subcommand);
cdb = bufprint(cdb, "%-26s ID=%03d #0x%04x LEN=%04d\n",
mnames[command_2_index(cmsg->Command, cmsg->Subcommand)],
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
((unsigned short *) msg)[1],
((unsigned short *) msg)[3],
((unsigned short *) msg)[0]);
@ -796,7 +823,7 @@ _cdebbuf *capi_cmsg2str(_cmsg *cmsg)
cmsg->l = 8;
cmsg->p = 0;
cdb = bufprint(cdb, "%s ID=%03d #0x%04x LEN=%04d\n",
mnames[command_2_index(cmsg->Command, cmsg->Subcommand)],
capi_cmd2str(cmsg->Command, cmsg->Subcommand),
((u16 *) cmsg->m)[1],
((u16 *) cmsg->m)[3],
((u16 *) cmsg->m)[0]);

4
drivers/isdn/capi/kcapi.c
View File

@ -1184,7 +1184,7 @@ static int old_capi_manufacturer(unsigned int cmd, void __user *data)
* Return value: CAPI result code
*/
int capi20_manufacturer(unsigned int cmd, void __user *data)
int capi20_manufacturer(unsigned long cmd, void __user *data)
{
struct capi_ctr *ctr;
int retval;
@ -1259,7 +1259,7 @@ int capi20_manufacturer(unsigned int cmd, void __user *data)
}
default:
printk(KERN_ERR "kcapi: manufacturer command %d unknown.\n",
printk(KERN_ERR "kcapi: manufacturer command %lu unknown.\n",
cmd);
break;

155
drivers/isdn/gigaset/capi.c
View File

@ -250,6 +250,8 @@ static inline void dump_rawmsg(enum debuglevel level, const char *tag,
l -= 12;
if (l <= 0)
return;
if (l > 64)
l = 64; /* arbitrary limit */
dbgline = kmalloc(3 * l, GFP_ATOMIC);
if (!dbgline)
return;
@ -645,7 +647,13 @@ int gigaset_isdn_icall(struct at_state_t *at_state)
__func__);
break;
}
capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
if (capi_cmsg2message(&iif->hcmsg,
__skb_put(skb, msgsize))) {
dev_err(cs->dev, "%s: message parser failure\n",
__func__);
dev_kfree_skb_any(skb);
break;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
/* add to listeners on this B channel, update state */
@ -691,7 +699,12 @@ static void send_disconnect_ind(struct bc_state *bcs,
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN));
if (capi_cmsg2message(&iif->hcmsg,
__skb_put(skb, CAPI_DISCONNECT_IND_LEN))) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@ -721,8 +734,12 @@ static void send_disconnect_b3_ind(struct bc_state *bcs,
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
capi_cmsg2message(&iif->hcmsg,
__skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN));
if (capi_cmsg2message(&iif->hcmsg,
__skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN))) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@ -787,7 +804,11 @@ void gigaset_isdn_connD(struct bc_state *bcs)
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
if (capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize))) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@ -887,7 +908,11 @@ void gigaset_isdn_connB(struct bc_state *bcs)
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize));
if (capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize))) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@ -1094,13 +1119,19 @@ static void send_conf(struct gigaset_capi_ctr *iif,
struct sk_buff *skb,
u16 info)
{
struct cardstate *cs = iif->ctr.driverdata;
/*
* _CONF replies always only have NCCI and Info parameters
* so they'll fit into the _REQ message skb
*/
capi_cmsg_answer(&iif->acmsg);
iif->acmsg.Info = info;
capi_cmsg2message(&iif->acmsg, skb->data);
if (capi_cmsg2message(&iif->acmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
__skb_trim(skb, CAPI_STDCONF_LEN);
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
@ -1122,7 +1153,11 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
static u8 confparam[10]; /* max. 9 octets + length byte */
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/*
@ -1180,6 +1215,7 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
confparam[3] = 2; /* length */
capimsg_setu16(confparam, 4,
CapiSupplementaryServiceNotSupported);
break;
}
info = CapiSuccess;
confparam[3] = 2; /* length */
@ -1220,6 +1256,7 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
}
/* send FACILITY_CONF with given Info and confirmation parameter */
dev_kfree_skb_any(skb);
capi_cmsg_answer(cmsg);
cmsg->Info = info;
cmsg->FacilityConfirmationParameter = confparam;
@ -1229,7 +1266,11 @@ static void do_facility_req(struct gigaset_capi_ctr *iif,
dev_err(cs->dev, "%s: out of memory\n", __func__);
return;
}
capi_cmsg2message(cmsg, __skb_put(cskb, msgsize));
if (capi_cmsg2message(cmsg, __skb_put(cskb, msgsize))) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(cskb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, cskb);
}
@ -1243,8 +1284,14 @@ static void do_listen_req(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
struct cardstate *cs = iif->ctr.driverdata;
/* decode message */
capi_message2cmsg(&iif->acmsg, skb->data);
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
/* store listening parameters */
@ -1261,8 +1308,14 @@ static void do_alert_req(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
struct cardstate *cs = iif->ctr.driverdata;
/* decode message */
capi_message2cmsg(&iif->acmsg, skb->data);
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
send_conf(iif, ap, skb, CapiAlertAlreadySent);
}
@ -1287,7 +1340,11 @@ static void do_connect_req(struct gigaset_capi_ctr *iif,
u16 info;
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* get free B channel & construct PLCI */
@ -1574,7 +1631,11 @@ static void do_connect_resp(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
dev_kfree_skb_any(skb);
@ -1740,7 +1801,11 @@ static void do_connect_b3_req(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number from PLCI */
@ -1785,7 +1850,11 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
u8 command;
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number and NCCI */
@ -1825,7 +1894,11 @@ static void do_connect_b3_resp(struct gigaset_capi_ctr *iif,
capi_cmsg_header(cmsg, ap->id, command, CAPI_IND,
ap->nextMessageNumber++, cmsg->adr.adrNCCI);
__skb_trim(skb, msgsize);
capi_cmsg2message(cmsg, skb->data);
if (capi_cmsg2message(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, skb);
}
@ -1847,7 +1920,11 @@ static void do_disconnect_req(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number from PLCI */
@ -1903,8 +1980,14 @@ static void do_disconnect_req(struct gigaset_capi_ctr *iif,
kfree(b3cmsg);
return;
}
capi_cmsg2message(b3cmsg,
__skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN));
if (capi_cmsg2message(b3cmsg,
__skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN))) {
dev_err(cs->dev, "%s: message parser failure\n",
__func__);
kfree(b3cmsg);
dev_kfree_skb_any(b3skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, b3cmsg);
kfree(b3cmsg);
capi_ctr_handle_message(&iif->ctr, ap->id, b3skb);
@ -1935,7 +2018,11 @@ static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif,
int channel;
/* decode message */
capi_message2cmsg(cmsg, skb->data);
if (capi_message2cmsg(cmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, cmsg);
/* extract and check channel number and NCCI */
@ -2052,8 +2139,14 @@ static void do_reset_b3_req(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
struct cardstate *cs = iif->ctr.driverdata;
/* decode message */
capi_message2cmsg(&iif->acmsg, skb->data);
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
send_conf(iif, ap, skb,
CapiResetProcedureNotSupportedByCurrentProtocol);
@ -2066,8 +2159,14 @@ static void do_unsupported(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
struct cardstate *cs = iif->ctr.driverdata;
/* decode message */
capi_message2cmsg(&iif->acmsg, skb->data);
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState);
}
@ -2079,8 +2178,14 @@ static void do_nothing(struct gigaset_capi_ctr *iif,
struct gigaset_capi_appl *ap,
struct sk_buff *skb)
{
struct cardstate *cs = iif->ctr.driverdata;
/* decode message */
capi_message2cmsg(&iif->acmsg, skb->data);
if (capi_message2cmsg(&iif->acmsg, skb->data)) {
dev_err(cs->dev, "%s: message parser failure\n", __func__);
dev_kfree_skb_any(skb);
return;
}
dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg);
dev_kfree_skb_any(skb);
}
@ -2357,7 +2462,7 @@ int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
struct gigaset_capi_ctr *iif;
int rc;
iif = kmalloc(sizeof(*iif), GFP_KERNEL);
iif = kzalloc(sizeof(*iif), GFP_KERNEL);
if (!iif) {
pr_err("%s: out of memory\n", __func__);
return -ENOMEM;
@ -2366,7 +2471,7 @@ int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
/* prepare controller structure */
iif->ctr.owner = THIS_MODULE;
iif->ctr.driverdata = cs;
strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name));
strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name) - 1);
iif->ctr.driver_name = "gigaset";
iif->ctr.load_firmware = NULL;
iif->ctr.reset_ctr = NULL;

116
drivers/isdn/gigaset/ev-layer.c
View File

@ -604,14 +604,14 @@ void gigaset_handle_modem_response(struct cardstate *cs)
}
EXPORT_SYMBOL_GPL(gigaset_handle_modem_response);
/* disconnect
/* disconnect_nobc
* process closing of connection associated with given AT state structure
* without B channel
*/
static void disconnect(struct at_state_t **at_state_p)
static void disconnect_nobc(struct at_state_t **at_state_p,
struct cardstate *cs)
{
unsigned long flags;
struct bc_state *bcs = (*at_state_p)->bcs;
struct cardstate *cs = (*at_state_p)->cs;
spin_lock_irqsave(&cs->lock, flags);
++(*at_state_p)->seq_index;
@ -622,23 +622,44 @@ static void disconnect(struct at_state_t **at_state_p)
gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
cs->commands_pending = 1;
}
spin_unlock_irqrestore(&cs->lock, flags);
if (bcs) {
/* B channel assigned: invoke hardware specific handler */
cs->ops->close_bchannel(bcs);
/* notify LL */
if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
gigaset_isdn_hupD(bcs);
}
} else {
/* no B channel assigned: just deallocate */
spin_lock_irqsave(&cs->lock, flags);
/* check for and deallocate temporary AT state */
if (!list_empty(&(*at_state_p)->list)) {
list_del(&(*at_state_p)->list);
kfree(*at_state_p);
*at_state_p = NULL;
spin_unlock_irqrestore(&cs->lock, flags);
}
spin_unlock_irqrestore(&cs->lock, flags);
}
/* disconnect_bc
* process closing of connection associated with given AT state structure
* and B channel
*/
static void disconnect_bc(struct at_state_t *at_state,
struct cardstate *cs, struct bc_state *bcs)
{
unsigned long flags;
spin_lock_irqsave(&cs->lock, flags);
++at_state->seq_index;
/* revert to selected idle mode */
if (!cs->cidmode) {
cs->at_state.pending_commands |= PC_UMMODE;
gig_dbg(DEBUG_EVENT, "Scheduling PC_UMMODE");
cs->commands_pending = 1;
}
spin_unlock_irqrestore(&cs->lock, flags);
/* invoke hardware specific handler */
cs->ops->close_bchannel(bcs);
/* notify LL */
if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) {
bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL);
gigaset_isdn_hupD(bcs);
}
}
@ -646,7 +667,7 @@ static void disconnect(struct at_state_t **at_state_p)
* get a free AT state structure: either one of those associated with the
* B channels of the Gigaset device, or if none of those is available,
* a newly allocated one with bcs=NULL
* The structure should be freed by calling disconnect() after use.
* The structure should be freed by calling disconnect_nobc() after use.
*/
static inline struct at_state_t *get_free_channel(struct cardstate *cs,
int cid)
@ -1057,7 +1078,7 @@ static void do_action(int action, struct cardstate *cs,
struct event_t *ev)
{
struct at_state_t *at_state = *p_at_state;
struct at_state_t *at_state2;
struct bc_state *bcs2;
unsigned long flags;
int channel;
@ -1156,8 +1177,8 @@ static void do_action(int action, struct cardstate *cs,
break;
case ACT_RING:
/* get fresh AT state structure for new CID */
at_state2 = get_free_channel(cs, ev->parameter);
if (!at_state2) {
at_state = get_free_channel(cs, ev->parameter);
if (!at_state) {
dev_warn(cs->dev,
"RING ignored: could not allocate channel structure\n");
break;
@ -1166,16 +1187,16 @@ static void do_action(int action, struct cardstate *cs,
/* initialize AT state structure
* note that bcs may be NULL if no B channel is free
*/
at_state2->ConState = 700;
at_state->ConState = 700;
for (i = 0; i < STR_NUM; ++i) {
kfree(at_state2->str_var[i]);
at_state2->str_var[i] = NULL;
kfree(at_state->str_var[i]);
at_state->str_var[i] = NULL;
}
at_state2->int_var[VAR_ZCTP] = -1;
at_state->int_var[VAR_ZCTP] = -1;
spin_lock_irqsave(&cs->lock, flags);
at_state2->timer_expires = RING_TIMEOUT;
at_state2->timer_active = 1;
at_state->timer_expires = RING_TIMEOUT;
at_state->timer_active = 1;
spin_unlock_irqrestore(&cs->lock, flags);
break;
case ACT_ICALL:
@ -1213,14 +1234,17 @@ static void do_action(int action, struct cardstate *cs,
case ACT_DISCONNECT:
cs->cur_at_seq = SEQ_NONE;
at_state->cid = -1;
if (bcs && cs->onechannel && cs->dle) {
if (!bcs) {
disconnect_nobc(p_at_state, cs);
} else if (cs->onechannel && cs->dle) {
/* Check for other open channels not needed:
* DLE only used for M10x with one B channel.
*/
at_state->pending_commands |= PC_DLE0;
cs->commands_pending = 1;
} else
disconnect(p_at_state);
} else {
disconnect_bc(at_state, cs, bcs);
}
break;
case ACT_FAKEDLE0:
at_state->int_var[VAR_ZDLE] = 0;
@ -1228,25 +1252,27 @@ static void do_action(int action, struct cardstate *cs,
/* fall through */
case ACT_DLE0:
cs->cur_at_seq = SEQ_NONE;
at_state2 = &cs->bcs[cs->curchannel].at_state;
disconnect(&at_state2);
bcs2 = cs->bcs + cs->curchannel;
disconnect_bc(&bcs2->at_state, cs, bcs2);
break;
case ACT_ABORTHUP:
cs->cur_at_seq = SEQ_NONE;
dev_warn(cs->dev, "Could not hang up.\n");
at_state->cid = -1;
if (bcs && cs->onechannel)
if (!bcs)
disconnect_nobc(p_at_state, cs);
else if (cs->onechannel)
at_state->pending_commands |= PC_DLE0;
else
disconnect(p_at_state);
disconnect_bc(at_state, cs, bcs);
schedule_init(cs, MS_RECOVER);
break;
case ACT_FAILDLE0:
cs->cur_at_seq = SEQ_NONE;
dev_warn(cs->dev, "Error leaving DLE mode.\n");
cs->dle = 0;
at_state2 = &cs->bcs[cs->curchannel].at_state;
disconnect(&at_state2);
bcs2 = cs->bcs + cs->curchannel;
disconnect_bc(&bcs2->at_state, cs, bcs2);
schedule_init(cs, MS_RECOVER);
break;
case ACT_FAILDLE1:
@ -1275,14 +1301,14 @@ static void do_action(int action, struct cardstate *cs,
if (reinit_and_retry(cs, channel) < 0) {
dev_warn(cs->dev,
"Could not get a call ID. Cannot dial.\n");
at_state2 = &cs->bcs[channel].at_state;
disconnect(&at_state2);
bcs2 = cs->bcs + channel;
disconnect_bc(&bcs2->at_state, cs, bcs2);
}
break;
case ACT_ABORTCID:
cs->cur_at_seq = SEQ_NONE;
at_state2 = &cs->bcs[cs->curchannel].at_state;
disconnect(&at_state2);
bcs2 = cs->bcs + cs->curchannel;
disconnect_bc(&bcs2->at_state, cs, bcs2);
break;
case ACT_DIALING:
@ -1291,7 +1317,10 @@ static void do_action(int action, struct cardstate *cs,
break;
case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL procssng */
disconnect(p_at_state);
if (bcs)
disconnect_bc(at_state, cs, bcs);
else
disconnect_nobc(p_at_state, cs);
break;
case ACT_ABORTDIAL: /* error/timeout during dial preparation */
@ -1380,6 +1409,11 @@ static void do_action(int action, struct cardstate *cs,
/* events from the LL */
case ACT_DIAL:
if (!ev->ptr) {
*p_genresp = 1;
*p_resp_code = RSP_ERROR;
break;
}
start_dial(at_state, ev->ptr, ev->parameter);
break;
case ACT_ACCEPT:

4
drivers/isdn/gigaset/usb-gigaset.c
View File

@ -497,6 +497,7 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb)
{
unsigned long flags;
int len;
gigaset_dbg_buffer(cs->mstate != MS_LOCKED ?
DEBUG_TRANSCMD : DEBUG_LOCKCMD,
@ -515,10 +516,11 @@ static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb)
spin_unlock_irqrestore(&cs->cmdlock, flags);
spin_lock_irqsave(&cs->lock, flags);
len = cb->len;
if (cs->connected)
tasklet_schedule(&cs->write_tasklet);
spin_unlock_irqrestore(&cs->lock, flags);
return cb->len;
return len;
}
static int gigaset_write_room(struct cardstate *cs)

2
include/linux/kernelcapi.h
View File

@ -41,7 +41,7 @@ u16 capi20_get_manufacturer(u32 contr, u8 buf[CAPI_MANUFACTURER_LEN]);
u16 capi20_get_version(u32 contr, struct capi_version *verp);
u16 capi20_get_serial(u32 contr, u8 serial[CAPI_SERIAL_LEN]);
u16 capi20_get_profile(u32 contr, struct capi_profile *profp);
int capi20_manufacturer(unsigned int cmd, void __user *data);
int capi20_manufacturer(unsigned long cmd, void __user *data);
#define CAPICTR_UP 0
#define CAPICTR_DOWN 1