* [PATCH 0/4] ISDN patches for 2.6.32
@ 2009-09-06 18:58 Tilman Schmidt
2009-09-06 18:58 ` [PATCH 3/4] isdn: avoid races in capidrv Tilman Schmidt
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Tilman Schmidt @ 2009-09-06 18:58 UTC (permalink / raw)
To: davem, Karsten Keil, linux-kernel, netdev, i4ldeveloper
Dave,
following are four patches for the Kernel CAPI ISDN subsystem which arose as
by-products of my work on the Gigaset driver: one documentation update, two
bugfixes (acked by the ISDN maintainer), and a debugging aid. Would you please
take them into your net tree for merging in kernel release 2.6.32.
Thanks,
Tilman
^ permalink raw reply [flat|nested] 6+ messages in thread* [PATCH 3/4] isdn: avoid races in capidrv 2009-09-06 18:58 [PATCH 0/4] ISDN patches for 2.6.32 Tilman Schmidt @ 2009-09-06 18:58 ` Tilman Schmidt 2009-09-06 18:58 ` [PATCH 4/4] isdn: make capidrv module parameter "debugmode" writeable Tilman Schmidt [not found] ` <20090906-patch-capi-0.tilman-ZTO5kqT2PaM@public.gmane.org> 2 siblings, 0 replies; 6+ messages in thread From: Tilman Schmidt @ 2009-09-06 18:58 UTC (permalink / raw) To: davem, Karsten Keil, linux-kernel, netdev, i4ldeveloper; +Cc: Carsten Paeth In several places, capidrv sends a CAPI message to the ISDN device and then updates its internal state accordingly. If the response message from the device arrives before the state is updated, it may be rejected or processed incorrectly. Avoid these races by updating the state before emitting the message. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> --- drivers/isdn/capi/capidrv.c | 24 ++++++++++++------------ 1 files changed, 12 insertions(+), 12 deletions(-) diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c index 6501202..c3f5472 100644 --- a/drivers/isdn/capi/capidrv.c +++ b/drivers/isdn/capi/capidrv.c @@ -671,8 +671,8 @@ static void n0(capidrv_contr * card, capidrv_ncci * ncci) NULL, /* Useruserdata */ /* $$$$ */ NULL /* Facilitydataarray */ ); - send_message(card, &cmsg); plci_change_state(card, ncci->plcip, EV_PLCI_DISCONNECT_REQ); + send_message(card, &cmsg); cmd.command = ISDN_STAT_BHUP; cmd.driver = card->myid; @@ -924,8 +924,8 @@ static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg) */ capi_cmsg_answer(cmsg); cmsg->Reject = 1; /* ignore */ - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT); + send_message(card, cmsg); printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s ignored\n", card->contrnr, cmd.parm.setup.phone, @@ -974,8 +974,8 @@ static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg) case 2: /* Call will be rejected. */ capi_cmsg_answer(cmsg); cmsg->Reject = 2; /* reject call, normal call clearing */ - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT); + send_message(card, cmsg); break; default: @@ -983,8 +983,8 @@ static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg) capi_cmsg_answer(cmsg); cmsg->Reject = 8; /* reject call, destination out of order */ - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT); + send_message(card, cmsg); break; } return; @@ -1020,8 +1020,8 @@ static void handle_plci(_cmsg * cmsg) card->bchans[plcip->chan].disconnecting = 1; plci_change_state(card, plcip, EV_PLCI_DISCONNECT_IND); capi_cmsg_answer(cmsg); - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_DISCONNECT_RESP); + send_message(card, cmsg); break; case CAPI_DISCONNECT_CONF: /* plci */ @@ -1078,8 +1078,8 @@ static void handle_plci(_cmsg * cmsg) if (card->bchans[plcip->chan].incoming) { capi_cmsg_answer(cmsg); - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND); + send_message(card, cmsg); } else { capidrv_ncci *nccip; capi_cmsg_answer(cmsg); @@ -1098,13 +1098,13 @@ static void handle_plci(_cmsg * cmsg) NULL /* NCPI */ ); nccip->msgid = cmsg->Messagenumber; + plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND); + ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ); send_message(card, cmsg); cmd.command = ISDN_STAT_DCONN; cmd.driver = card->myid; cmd.arg = plcip->chan; card->interface.statcallb(&cmd); - plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND); - ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ); } break; @@ -1193,8 +1193,8 @@ static void handle_ncci(_cmsg * cmsg) goto notfound; capi_cmsg_answer(cmsg); - send_message(card, cmsg); ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_ACTIVE_IND); + send_message(card, cmsg); cmd.command = ISDN_STAT_BCONN; cmd.driver = card->myid; @@ -1222,8 +1222,8 @@ static void handle_ncci(_cmsg * cmsg) 0, /* Reject */ NULL /* NCPI */ ); - send_message(card, cmsg); ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_RESP); + send_message(card, cmsg); break; } printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr); @@ -1299,8 +1299,8 @@ static void handle_ncci(_cmsg * cmsg) card->bchans[nccip->chan].disconnecting = 1; ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_IND); capi_cmsg_answer(cmsg); - send_message(card, cmsg); ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_RESP); + send_message(card, cmsg); break; case CAPI_DISCONNECT_B3_CONF: /* ncci */ @@ -2014,8 +2014,8 @@ static void send_listen(capidrv_contr *card) card->cipmask, card->cipmask2, NULL, NULL); - send_message(card, &cmdcmsg); listen_change_state(card, EV_LISTEN_REQ); + send_message(card, &cmdcmsg); } static void listentimerfunc(unsigned long x) -- 1.6.2.1.214.ge986c ^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 4/4] isdn: make capidrv module parameter "debugmode" writeable 2009-09-06 18:58 [PATCH 0/4] ISDN patches for 2.6.32 Tilman Schmidt 2009-09-06 18:58 ` [PATCH 3/4] isdn: avoid races in capidrv Tilman Schmidt @ 2009-09-06 18:58 ` Tilman Schmidt [not found] ` <20090906-patch-capi-0.tilman-ZTO5kqT2PaM@public.gmane.org> 2 siblings, 0 replies; 6+ messages in thread From: Tilman Schmidt @ 2009-09-06 18:58 UTC (permalink / raw) To: davem, Karsten Keil, linux-kernel, netdev, i4ldeveloper; +Cc: Carsten Paeth Being able to change the debugmode module parameter of capidrv on the fly is quite useful for debugging and doesn't do any harm. Signed-off-by: Tilman Schmidt <tilman@imap.cc> --- drivers/isdn/capi/capidrv.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c index c3f5472..75c691c 100644 --- a/drivers/isdn/capi/capidrv.c +++ b/drivers/isdn/capi/capidrv.c @@ -40,7 +40,7 @@ static int debugmode = 0; MODULE_DESCRIPTION("CAPI4Linux: Interface to ISDN4Linux"); MODULE_AUTHOR("Carsten Paeth"); MODULE_LICENSE("GPL"); -module_param(debugmode, uint, 0); +module_param(debugmode, uint, S_IRUGO|S_IWUSR); /* -------- type definitions ----------------------------------------- */ -- 1.6.2.1.214.ge986c ^ permalink raw reply related [flat|nested] 6+ messages in thread
[parent not found: <20090906-patch-capi-0.tilman-ZTO5kqT2PaM@public.gmane.org>]
* [PATCH 2/4] isdn: accept CAPI Informational Info values as success [not found] ` <20090906-patch-capi-0.tilman-ZTO5kqT2PaM@public.gmane.org> @ 2009-09-06 18:58 ` Tilman Schmidt 2009-09-06 18:58 ` [PATCH 1/4] Documentation: expand isdn/INTERFACE.CAPI document Tilman Schmidt 1 sibling, 0 replies; 6+ messages in thread From: Tilman Schmidt @ 2009-09-06 18:58 UTC (permalink / raw) To: davem-fT/PcQaiUtIeIZ0/mPfg9Q, Karsten Keil, linux-kernel-u79uwXL29TY76Z2rM5mHXA, netdev-u79uwXL29TY76Z2rM5mHXA, i4ldeveloper-JX7+OpRa80SjiSfgN6Y1Ib39b6g2fGNp Cc: Carsten Paeth Info values in the 0x00xx range are defined in the CAPI standard as "Informational, message processed successfully". Therefore a CONNECT_B3_CONF message with an Info value in that range should open an NCCI just as with Info==0. Signed-off-by: Tilman Schmidt <tilman-ZTO5kqT2PaM@public.gmane.org> Acked-by: Karsten Keil <keil-shG/GajIFYqbacvFa/9K2g@public.gmane.org> --- drivers/isdn/capi/capi.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 2d83524..65bf91e 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -603,7 +603,7 @@ static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { u16 info = CAPIMSG_U16(skb->data, 12); // Info field - if (info == 0) { + if ((info & 0xff00) == 0) { mutex_lock(&cdev->ncci_list_mtx); capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); mutex_unlock(&cdev->ncci_list_mtx); -- 1.6.2.1.214.ge986c ^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 1/4] Documentation: expand isdn/INTERFACE.CAPI document [not found] ` <20090906-patch-capi-0.tilman-ZTO5kqT2PaM@public.gmane.org> 2009-09-06 18:58 ` [PATCH 2/4] isdn: accept CAPI Informational Info values as success Tilman Schmidt @ 2009-09-06 18:58 ` Tilman Schmidt 1 sibling, 0 replies; 6+ messages in thread From: Tilman Schmidt @ 2009-09-06 18:58 UTC (permalink / raw) To: davem-fT/PcQaiUtIeIZ0/mPfg9Q, Karsten Keil, linux-kernel-u79uwXL29TY76Z2rM5mHXA, netdev-u79uwXL29TY76Z2rM5mHXA, i4ldeveloper-JX7+OpRa80SjiSfgN6Y1Ib39b6g2fGNp Describe the storage of CAPI messages and payload data in SKBs, kernelcapi debugging output, and note that send_message() may in fact be called in interrupt context. Impact: documentation Signed-off-by: Tilman Schmidt <tilman-ZTO5kqT2PaM@public.gmane.org> --- Documentation/isdn/INTERFACE.CAPI | 68 ++++++++++++++++++++++++++++++++----- 1 files changed, 59 insertions(+), 9 deletions(-) diff --git a/Documentation/isdn/INTERFACE.CAPI b/Documentation/isdn/INTERFACE.CAPI index 686e107..e6bb1a7 100644 --- a/Documentation/isdn/INTERFACE.CAPI +++ b/Documentation/isdn/INTERFACE.CAPI @@ -60,10 +60,9 @@ open() operation on regular files or character devices. After a successful return from register_appl(), CAPI messages from the application may be passed to the driver for the device via calls to the -send_message() callback function. The CAPI message to send is stored in the -data portion of an skb. Conversely, the driver may call Kernel CAPI's -capi_ctr_handle_message() function to pass a received CAPI message to Kernel -CAPI for forwarding to an application, specifying its ApplID. +send_message() callback function. Conversely, the driver may call Kernel +CAPI's capi_ctr_handle_message() function to pass a received CAPI message to +Kernel CAPI for forwarding to an application, specifying its ApplID. Deregistration requests (CAPI operation CAPI_RELEASE) from applications are forwarded as calls to the release_appl() callback function, passing the same @@ -142,6 +141,7 @@ u16 (*send_message)(struct capi_ctr *ctrlr, struct sk_buff *skb) to accepting or queueing the message. Errors occurring during the actual processing of the message should be signaled with an appropriate reply message. + May be called in process or interrupt context. Calls to this function are not serialized by Kernel CAPI, ie. it must be prepared to be re-entered. @@ -154,7 +154,8 @@ read_proc_t *ctr_read_proc system entry, /proc/capi/controllers/<n>; will be called with a pointer to the device's capi_ctr structure as the last (data) argument -Note: Callback functions are never called in interrupt context. +Note: Callback functions except send_message() are never called in interrupt +context. - to be filled in before calling capi_ctr_ready(): @@ -171,14 +172,40 @@ u8 serial[CAPI_SERIAL_LEN] value to return for CAPI_GET_SERIAL -4.3 The _cmsg Structure +4.3 SKBs + +CAPI messages are passed between Kernel CAPI and the driver via send_message() +and capi_ctr_handle_message(), stored in the data portion of a socket buffer +(skb). Each skb contains a single CAPI message coded according to the CAPI 2.0 +standard. + +For the data transfer messages, DATA_B3_REQ and DATA_B3_IND, the actual +payload data immediately follows the CAPI message itself within the same skb. +The Data and Data64 parameters are not used for processing. The Data64 +parameter may be omitted by setting the length field of the CAPI message to 22 +instead of 30. + + +4.4 The _cmsg Structure (declared in <linux/isdn/capiutil.h>) The _cmsg structure stores the contents of a CAPI 2.0 message in an easily -accessible form. It contains members for all possible CAPI 2.0 parameters, of -which only those appearing in the message type currently being processed are -actually used. Unused members should be set to zero. +accessible form. It contains members for all possible CAPI 2.0 parameters, +including subparameters of the Additional Info and B Protocol structured +parameters, with the following exceptions: + +* second Calling party number (CONNECT_IND) + +* Data64 (DATA_B3_REQ and DATA_B3_IND) + +* Sending complete (subparameter of Additional Info, CONNECT_REQ and INFO_REQ) + +* Global Configuration (subparameter of B Protocol, CONNECT_REQ, CONNECT_RESP + and SELECT_B_PROTOCOL_REQ) + +Only those parameters appearing in the message type currently being processed +are actually used. Unused members should be set to zero. Members are named after the CAPI 2.0 standard names of the parameters they represent. See <linux/isdn/capiutil.h> for the exact spelling. Member data @@ -297,3 +324,26 @@ char *capi_cmd2str(u8 Command, u8 Subcommand) be NULL if the command/subcommand is not one of those defined in the CAPI 2.0 standard. + +7. Debugging + +The module kernelcapi has a module parameter showcapimsgs controlling some +debugging output produced by the module. It can only be set when the module is +loaded, via a parameter "showcapimsgs=<n>" to the modprobe command, either on +the command line or in the configuration file. + +If the lowest bit of showcapimsgs is set, kernelcapi logs controller and +application up and down events. + +In addition, every registered CAPI controller has an associated traceflag +parameter controlling how CAPI messages sent from and to tha controller are +logged. The traceflag parameter is initialized with the value of the +showcapimsgs parameter when the controller is registered, but can later be +changed via the MANUFACTURER_REQ command KCAPI_CMD_TRACE. + +If the value of traceflag is non-zero, CAPI messages are logged. +DATA_B3 messages are only logged if the value of traceflag is > 2. + +If the lowest bit of traceflag is set, only the command/subcommand and message +length are logged. Otherwise, kernelcapi logs a readable representation of +the entire message. -- 1.6.2.1.214.ge986c ^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 0/4] ISDN patches for 2.6.32 (v3) @ 2009-10-06 22:17 Tilman Schmidt 2009-10-06 22:18 ` [PATCH 3/4] isdn: avoid races in capidrv Tilman Schmidt 0 siblings, 1 reply; 6+ messages in thread From: Tilman Schmidt @ 2009-10-06 22:17 UTC (permalink / raw) To: David Miller, netdev, linux-kernel Cc: Karsten Keil, Karsten Keil, isdn4linux, i4ldeveloper David, as I still haven't heard anything from Karsten and none of the other ISDN developers has volunteered to step into the breach, I would like to get back to the suggestion of merging my ISDN patches through you. Here is a respin of the four patches for the Kernel CAPI subsystem I first submitted on 2009-09-06. I have folded into patch 1 the amendment I posted as "patch 5/4" on 2009-09-25, and re-added to patches 2 and 3 Karsten's original Acked-by that came out of the discussion on the isdn4linux mailing list. Apart from that, the series is unchanged from the second submission on 2009-09-19. I'll be following up with the respun patches to the Gigaset driver. It would be great if these could still be integrated into kernel release 2.6.32. Thanks, Tilman ^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 3/4] isdn: avoid races in capidrv 2009-10-06 22:17 [PATCH 0/4] ISDN patches for 2.6.32 (v3) Tilman Schmidt @ 2009-10-06 22:18 ` Tilman Schmidt 0 siblings, 0 replies; 6+ messages in thread From: Tilman Schmidt @ 2009-10-06 22:18 UTC (permalink / raw) To: David Miller, netdev, linux-kernel Cc: Karsten Keil, Karsten Keil, isdn4linux, i4ldeveloper In several places, capidrv sends a CAPI message to the ISDN device and then updates its internal state accordingly. If the response message from the device arrives before the state is updated, it may be rejected or processed incorrectly. Avoid these races by updating the state before emitting the message. Impact: bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> --- drivers/isdn/capi/capidrv.c | 25 +++++++++++++------------ 1 files changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c index 6501202..4921eae 100644 --- a/drivers/isdn/capi/capidrv.c +++ b/drivers/isdn/capi/capidrv.c @@ -671,8 +671,8 @@ static void n0(capidrv_contr * card, capidrv_ncci * ncci) NULL, /* Useruserdata */ /* $$$$ */ NULL /* Facilitydataarray */ ); - send_message(card, &cmsg); plci_change_state(card, ncci->plcip, EV_PLCI_DISCONNECT_REQ); + send_message(card, &cmsg); cmd.command = ISDN_STAT_BHUP; cmd.driver = card->myid; @@ -924,8 +924,8 @@ static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg) */ capi_cmsg_answer(cmsg); cmsg->Reject = 1; /* ignore */ - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT); + send_message(card, cmsg); printk(KERN_INFO "capidrv-%d: incoming call %s,%d,%d,%s ignored\n", card->contrnr, cmd.parm.setup.phone, @@ -974,8 +974,8 @@ static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg) case 2: /* Call will be rejected. */ capi_cmsg_answer(cmsg); cmsg->Reject = 2; /* reject call, normal call clearing */ - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT); + send_message(card, cmsg); break; default: @@ -983,8 +983,8 @@ static void handle_incoming_call(capidrv_contr * card, _cmsg * cmsg) capi_cmsg_answer(cmsg); cmsg->Reject = 8; /* reject call, destination out of order */ - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_REJECT); + send_message(card, cmsg); break; } return; @@ -1020,8 +1020,8 @@ static void handle_plci(_cmsg * cmsg) card->bchans[plcip->chan].disconnecting = 1; plci_change_state(card, plcip, EV_PLCI_DISCONNECT_IND); capi_cmsg_answer(cmsg); - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_DISCONNECT_RESP); + send_message(card, cmsg); break; case CAPI_DISCONNECT_CONF: /* plci */ @@ -1078,8 +1078,8 @@ static void handle_plci(_cmsg * cmsg) if (card->bchans[plcip->chan].incoming) { capi_cmsg_answer(cmsg); - send_message(card, cmsg); plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND); + send_message(card, cmsg); } else { capidrv_ncci *nccip; capi_cmsg_answer(cmsg); @@ -1098,13 +1098,14 @@ static void handle_plci(_cmsg * cmsg) NULL /* NCPI */ ); nccip->msgid = cmsg->Messagenumber; + plci_change_state(card, plcip, + EV_PLCI_CONNECT_ACTIVE_IND); + ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ); send_message(card, cmsg); cmd.command = ISDN_STAT_DCONN; cmd.driver = card->myid; cmd.arg = plcip->chan; card->interface.statcallb(&cmd); - plci_change_state(card, plcip, EV_PLCI_CONNECT_ACTIVE_IND); - ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_REQ); } break; @@ -1193,8 +1194,8 @@ static void handle_ncci(_cmsg * cmsg) goto notfound; capi_cmsg_answer(cmsg); - send_message(card, cmsg); ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_ACTIVE_IND); + send_message(card, cmsg); cmd.command = ISDN_STAT_BCONN; cmd.driver = card->myid; @@ -1222,8 +1223,8 @@ static void handle_ncci(_cmsg * cmsg) 0, /* Reject */ NULL /* NCPI */ ); - send_message(card, cmsg); ncci_change_state(card, nccip, EV_NCCI_CONNECT_B3_RESP); + send_message(card, cmsg); break; } printk(KERN_ERR "capidrv-%d: no mem for ncci, sorry\n", card->contrnr); @@ -1299,8 +1300,8 @@ static void handle_ncci(_cmsg * cmsg) card->bchans[nccip->chan].disconnecting = 1; ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_IND); capi_cmsg_answer(cmsg); - send_message(card, cmsg); ncci_change_state(card, nccip, EV_NCCI_DISCONNECT_B3_RESP); + send_message(card, cmsg); break; case CAPI_DISCONNECT_B3_CONF: /* ncci */ @@ -2014,8 +2015,8 @@ static void send_listen(capidrv_contr *card) card->cipmask, card->cipmask2, NULL, NULL); - send_message(card, &cmdcmsg); listen_change_state(card, EV_LISTEN_REQ); + send_message(card, &cmdcmsg); } static void listentimerfunc(unsigned long x) -- 1.6.2.1.214.ge986c ^ permalink raw reply related [flat|nested] 6+ messages in thread
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2009-09-06 18:58 [PATCH 0/4] ISDN patches for 2.6.32 Tilman Schmidt
2009-09-06 18:58 ` [PATCH 3/4] isdn: avoid races in capidrv Tilman Schmidt
2009-09-06 18:58 ` [PATCH 4/4] isdn: make capidrv module parameter "debugmode" writeable Tilman Schmidt
[not found] ` <20090906-patch-capi-0.tilman-ZTO5kqT2PaM@public.gmane.org>
2009-09-06 18:58 ` [PATCH 2/4] isdn: accept CAPI Informational Info values as success Tilman Schmidt
2009-09-06 18:58 ` [PATCH 1/4] Documentation: expand isdn/INTERFACE.CAPI document Tilman Schmidt
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2009-10-06 22:17 [PATCH 0/4] ISDN patches for 2.6.32 (v3) Tilman Schmidt
2009-10-06 22:18 ` [PATCH 3/4] isdn: avoid races in capidrv Tilman Schmidt
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