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2012-11-15ISDN: capi, use kref from tty_portJiri Slaby1-19/+17
After commit "TTY: move tty buffers to tty_port", the tty buffers are not freed in some drivers. This is because tty_port_destructor is not called whenever a tty_port is freed. This was an assumption I counted with but was unfortunately untrue. So fix the drivers to fulfil this assumption. Here it is enough to switch to refcounting in tty_port. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-13TTY: use tty_port_register_deviceJiri Slaby1-1/+2
Currently we have no way to assign tty->port while performing tty installation. There are two ways to provide the link tty_struct => tty_port. Either by calling tty_port_install from tty->ops->install or tty_port_register_device called instead of tty_register_device when the device is being set up after connected. In this patch we modify most of the drivers to do the latter. When the drivers use tty_register_device and we have tty_port already, we switch to tty_port_register_device. So we have the tty_struct => tty_port link for free for those. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-07isdn/capi: elliminate capincci_find() in non-middleware caseTilman Schmidt1-14/+13
If Kernel CAPI is compiled without CONFIG_ISDN_CAPI_MIDDLEWARE, the structure retrieved via capincci_find() is never actually used, so don't compile that function in that case. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-07isdn/capi: fix readability damageTilman Schmidt2-19/+12
Fix up some of the readibility deterioration caused by the recent whitespace coding style cleanup. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds8-982/+981
Pull networking merge from David Miller: "1) Move ixgbe driver over to purely page based buffering on receive. From Alexander Duyck. 2) Add receive packet steering support to e1000e, from Bruce Allan. 3) Convert TCP MD5 support over to RCU, from Eric Dumazet. 4) Reduce cpu usage in handling out-of-order TCP packets on modern systems, also from Eric Dumazet. 5) Support the IP{,V6}_UNICAST_IF socket options, making the wine folks happy, from Erich Hoover. 6) Support VLAN trunking from guests in hyperv driver, from Haiyang Zhang. 7) Support byte-queue-limtis in r8169, from Igor Maravic. 8) Outline code intended for IP_RECVTOS in IP_PKTOPTIONS existed but was never properly implemented, Jiri Benc fixed that. 9) 64-bit statistics support in r8169 and 8139too, from Junchang Wang. 10) Support kernel side dump filtering by ctmark in netfilter ctnetlink, from Pablo Neira Ayuso. 11) Support byte-queue-limits in gianfar driver, from Paul Gortmaker. 12) Add new peek socket options to assist with socket migration, from Pavel Emelyanov. 13) Add sch_plug packet scheduler whose queue is controlled by userland daemons using explicit freeze and release commands. From Shriram Rajagopalan. 14) Fix FCOE checksum offload handling on transmit, from Yi Zou." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1846 commits) Fix pppol2tp getsockname() Remove printk from rds_sendmsg ipv6: fix incorrent ipv6 ipsec packet fragment cpsw: Hook up default ndo_change_mtu. net: qmi_wwan: fix build error due to cdc-wdm dependecy netdev: driver: ethernet: Add TI CPSW driver netdev: driver: ethernet: add cpsw address lookup engine support phy: add am79c874 PHY support mlx4_core: fix race on comm channel bonding: send igmp report for its master fs_enet: Add MPC5125 FEC support and PHY interface selection net: bpf_jit: fix BPF_S_LDX_B_MSH compilation net: update the usage of CHECKSUM_UNNECESSARY fcoe: use CHECKSUM_UNNECESSARY instead of CHECKSUM_PARTIAL on tx net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso ixgbe: Fix issues with SR-IOV loopback when flow control is disabled net/hyperv: Fix the code handling tx busy ixgbe: fix namespace issues when FCoE/DCB is not enabled rtlwifi: Remove unused ETH_ADDR_LEN defines igbvf: Use ETH_ALEN ... Fix up fairly trivial conflicts in drivers/isdn/gigaset/interface.c and drivers/net/usb/{Kconfig,qmi_wwan.c} as per David.
2012-03-08TTY: remove unneeded tty->index checksJiri Slaby1-2/+1
Checking if tty->index is in bounds is not needed. The tty has the index set in the initial open. This is done in get_tty_driver. And it can be only in interval <0,driver->num). So remove the tests which check exactly this interval. Some are left untouched as they check against the current backing device count. (Leaving apart that the check is racy in most of the cases.) Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-08TTY: remove re-assignments to tty_driver membersJiri Slaby1-1/+0
All num, magic and owner are set by alloc_tty_driver. No need to re-set them on each allocation site. pti driver sets something different to what it passes to alloc_tty_driver. It is not a bug, since we don't use the lines parameter in any way. Anyway this is fixed, and now we do the right thing. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-04ppp: Replace uses of <linux/if_ppp.h> with <linux/ppp-ioctl.h>Paul Mackerras1-1/+1
Since all that include/linux/if_ppp.h does is #include <linux/ppp-ioctl.h>, this replaces the occurrences of #include <linux/if_ppp.h> with #include <linux/ppp-ioctl.h>. It also corrects an error in Documentation/networking/l2tp.txt, where it referenced include/linux/if_ppp.h as the source of some definitions that are actually now defined in include/linux/if_pppol2tp.h. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-21isdn: whitespace coding style cleanupJoe Perches8-981/+980
isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-02TTY: use tty_standard_installJiri Slaby1-6/+3
Use the helper in the rest of the tty drivers. This is a simple replacement. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2011-10-31drivers/isdn: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required.Paul Gortmaker1-0/+1
In preparation of the module.h usage cleanup, call out the header that we need to get EXPORT_SYMBOL variants and THIS_MODULE into scope. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-05-19isdn: capi: Use pr_debug() instead of ifdefs.David S. Miller1-83/+32
I was investigating some warnings that spew because of the _DEBUG_FOO ifdef'ery in here. Instead of adding more ifdefs to fix that warning, let's use pr_debug() and get rid of these CPP checks altogether. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-06capi: Perform scheduled capifs removalJan Kiszka5-303/+4
udev fully replaces this special file system that only contains CAPI NCCI TTY device nodes. User space (pppdcapiplugin) works without noticing the difference. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-17tty: now phase out the ioctl file pointer for goodAlan Cox1-8/+2
Only oddities here are a couple of drivers that bogusly called the ldisc helpers instead of returning -ENOIOCTLCMD. Fix the bug and the rest goes away. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-12-24isdn/capi: make kcapi use a separate workqueueTejun Heo1-8/+18
flush_scheduled_work() is deprecated and will be removed. Because kcapi uses fire-and-forget type works, it's impossible to flush each work explicitly. Create and use a dedicated workqueue instead. Please note that with recent workqueue changes, each workqueue doesn't reserve a lot of resources and using it as a flush domain is fine. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Jan Kiszka <jan.kiszka@web.de>
2010-12-24isdn/capi: unregister capictr notifier after init failureTejun Heo1-0/+1
capidrv_init() could leave capictr notifier dangling after init failure. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Jan Kiszka <jan.kiszka@web.de>
2010-10-29convert get_sb_single() usersAl Viro1-4/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-21CAPI: Silence lockdep warning on get_capi_appl_by_nr usageJan Kiszka1-5/+14
As long as we hold capi_controller_lock, we can safely access capi_applications without RCU protection as no one can modify the application list underneath us. Introduce an RCU-free __get_capi_appl_by_nr for this purpose. This silences lockdep warnings on suspicious rcu_dereference usage. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-08drivers: isdn: capi: use simple_strtol to convert numbersAndy Shevchenko1-4/+13
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Tilman Schmidt <tilman@imap.cc> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-15drivers: isdn: use kernel macros to convert hex digitAndy Shevchenko1-5/+2
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Tilman Schmidt <tilman@imap.cc> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-12drivers/isdn: Remove unnecessary casts of private_dataJoe Perches1-3/+3
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-12isdn: autoconvert trivial BKL users to private mutexArnd Bergmann1-3/+3
All these files use the big kernel lock in a trivial way to serialize their private file operations, typically resulting from an earlier semi-automatic pushdown from VFS. None of these drivers appears to want to lock against other code, and they all use the BKL as the top-level lock in their file operations, meaning that there is no lock-order inversion problem. Consequently, we can remove the BKL completely, replacing it with a per-file mutex in every case. Using a scripted approach means we can avoid typos. file=$1 name=$2 if grep -q lock_kernel ${file} ; then if grep -q 'include.*linux.mutex.h' ${file} ; then sed -i '/include.*<linux\/smp_lock.h>/d' ${file} else sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file} fi sed -i ${file} \ -e "/^#include.*linux.mutex.h/,$ { 1,/^\(static\|int\|long\)/ { /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex); } }" \ -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \ -e '/[ ]*cycle_kernel_lock();/d' else sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \ -e '/cycle_kernel_lock()/d' fi Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-03isdn/kcapi: return -EFAULT on copy_from_user errorsDan Carpenter1-3/+3
copy_from_user() returns the number of bytes remaining but we should return -EFAULT here. The error code gets returned to the user. Both old_capi_manufacturer() and capi20_manufacturer() had other places that already returned -EFAULT so this won't break anything. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-0/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (63 commits) drivers/net/usb/asix.c: Fix pointer cast. be2net: Bug fix to avoid disabling bottom half during firmware upgrade. proc_dointvec: write a single value hso: add support for new products Phonet: fix potential use-after-free in pep_sock_close() ath9k: remove VEOL support for ad-hoc ath9k: change beacon allocation to prefer the first beacon slot sock.h: fix kernel-doc warning cls_cgroup: Fix build error when built-in macvlan: do proper cleanup in macvlan_common_newlink() V2 be2net: Bug fix in init code in probe net/dccp: expansion of error code size ath9k: Fix rx of mcast/bcast frames in PS mode with auto sleep wireless: fix sta_info.h kernel-doc warnings wireless: fix mac80211.h kernel-doc warnings iwlwifi: testing the wrong variable in iwl_add_bssid_station() ath9k_htc: rare leak in ath9k_hif_usb_alloc_tx_urbs() ath9k_htc: dereferencing before check in hif_usb_tx_cb() rt2x00: Fix rt2800usb TX descriptor writing. rt2x00: Fix failed SLEEP->AWAKE and AWAKE->SLEEP transitions. ...
2010-05-23isdn/capi: make reset_ctr op truly optionalTilman Schmidt1-0/+6
The CAPI controller operation reset_ctr is marked as optional, and not all drivers do implement it. Add a check to the kernel CAPI whether it exists before trying to call it. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <isdn@linux-pingi.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17isdn: Push down BKL into ioctl functionsArnd Bergmann1-3/+14
Push down bkl into isdn ioctl functions [fweisbec: dropped drivers/isdn/divert/divert_procfs.c as it has been pushed down in procfs branch already] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo4-0/+4
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-02-16CAPI: Remove experimental tag from middleware featureJan Kiszka1-2/+1
Despite all its bugs, the middleware support of our CAPI stack was already in use for many, many moons. And after going through its code, fixing all issues I found, I feel it deserves to officially become a non-experimental feature. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Schedule capifs for removalJan Kiszka1-6/+7
With dynamic TTY nodes and the help of udev, we no longer need this special filesystem. Schedule it for removal in one year from now. As a last duty to this feature, move its help to right option so that users can read the rationale. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop special controller lookup from capi20_put_messageJan Kiszka1-5/+2
This strange special rule to fall back to controller 1 cannot be derived from the CAPI specs and looks a lot like it was once dedicated to some out-of-tree driver, probably AVM's broken fcdsl2 (FRITZ!Card DSL v2.0). I found no in-tree user that needs this check, and I'm now taking care of the fcdsl2. So drop these bits from our stack. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop return value of handle_minor_sendJan Kiszka1-13/+9
We did not evaluate handle_minor_send's return value, just (void)'ed it away. Time for a cleanup. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Clean up capiminor_*_ackJan Kiszka1-12/+7
No need for irqsave acquisition of acklock, bh-safe is sufficient. Moverover, move kfree out of the lock and do not take acklock at all in capiminor_del_all_ack as we are the last user of the list here. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Fix locking around capiminor's output queue and drop workaround_lockJan Kiszka1-59/+67
Introduce outlock as a spin lock that protects capiminor's outqueue, outbytes and outskb (formerly known as ttyskb). outlock can be acquired from soft-IRQ context via capinc_write, so make it bh-safe. This finally removes the last reason for keeping the workaround lock around (which was incomplete and partly broken anyway). And as we no longer call handle_recv_skb in atomic context, gen_data_b3_resp_for can use non-atomic allocation now. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop capiminor's unused inbytes counterJan Kiszka1-7/+3
The inbytes counter was only updated but never read. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Use atomics for capiminor's datahandle and msgidJan Kiszka1-9/+7
The capiminor members datahandle and msgid are incremented outside any lock, so better do this atomically. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Rename datahandle_queue -> ackqueue_entryJan Kiszka1-4/+4
This struct is describing a queue entry, not the queue itself. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Rework capiminor RX handlerJan Kiszka1-22/+38
Avoid re-queuing skbs unless the error detected in handle_recv_skb is expected to be recoverable such as lacking memory, a full CAPI queue, a full TTY input buffer, or a not yet existing TTY. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop handle_minor_recv from capinc_tty_writeJan Kiszka1-1/+0
Sending a message down the CAPI stack may trigger the reception of an answer, but this will go through capi_recv_message and call handle_minor_recv from there. There is no need to walk the receive queue on capinc_tty_write. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop atomic ttyopencountJan Kiszka1-20/+10
Not needed, tty->count keeps track of this information. At this chance, drop traces of ancient attempts to debug this logic via _DEBUG_REFCOUNT. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Clean up capiminors_lockJan Kiszka1-12/+9
Use a plain spin lock for capiminors_lock, drop inconsistent irqsafe acquisitions (it's only used in process context anyway). Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop obsolete nccip from capiminor structJan Kiszka1-43/+1
The nccip in capiminor used to serve as an indicator that the NCCI was close. But we don't need this, we issue a hangup on capincci_free_minor. So drop this legacy. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Issue synchronous hangup on capincci_free_minorJan Kiszka1-1/+1
capincci_free and, thus, capincci_free_minor runs in process context, so we can issue the hangup of the associated TTY synchronously. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Drop remaining NULL checks on tty->driver_dataJan Kiszka1-33/+31
tty_struct's driver_data cannot be NULL, no need to test for it. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Use tty_port to keep track of capiminor's ttyJan Kiszka1-32/+62
Use the reference management features of tty_port to look up and drop again the tty_struct associated with a capiminor. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Establish install/cleanup handlers for capiminor TTYsJan Kiszka1-14/+28
Properly associate/disassociate a capiminor object with its TTY via the install/cleanup handlers instead of trying to guess first open and last close. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Use kref on capiminorJan Kiszka1-9/+28
Install a reference counter for capiminor objects. Acquire it when obtaining a capiminor from the array during capinc_tty_open, drop it when closing the tty again. Another reference is held for the hook-up with capincci. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Use dynamic major for NCCI TTYs by defaultJan Kiszka1-6/+4
No need to allocate a fixed major for this TTY, both capifs and udev make this transparent to the user. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Dynamically register minor devicesJan Kiszka1-11/+24
Register capiminors dynamically with the TTY core so that udev can make them show up as the NCCIs appear or disappear. This removes the need to check if the capiminor requested in capinc_tty_open actually exists. And this completely obsoletes capifs which will be scheduled for removal in a later patch. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Clean up capinc_tty_init/exitJan Kiszka1-10/+10
Return proper error code if tty_register_driver fails. In contrast, tty_unregister_driver cannot practically fail, so drop that error handling. Finally, mark capinc_tty_init/exit with __init/__exit. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-16CAPI: Switch capiminor list to arrayJan Kiszka1-40/+35
Using a plain array of pointers simplifies the management of capiminors. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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