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path: root/drivers/isdn/gigaset
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2010-04-01gigaset: prune use of tty_buffer_request_roomTilman Schmidt
commit 873a69a358a6b393fd8d9d92e193ec8895cac4d7 upstream. Calling tty_buffer_request_room() before tty_insert_flip_string() is unnecessary, costs CPU and for big buffers can mess up the multi-page allocation avoidance. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> CC: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-04-01gigaset: correct clearing of at_state strings on RINGTilman Schmidt
commit 3a0a3a6b92edf181f849ebd8417122392ba73a96 upstream. In RING handling, clear the table of received parameter strings in a loop like everywhere else, instead of by enumeration which had already gotten out of sync. Impact: minor bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-10-06gigaset: add kerneldoc commentsTilman Schmidt
Add kerneldoc comments to some functions in the Gigaset driver. Impact: documentation Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: correct debugging output selectionTilman Schmidt
Dump payload data consistently only when DEBUG_STREAM_DUMP debug bit is set. Impact: debugging aid Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: improve error recoveryTilman Schmidt
When the Gigaset base stops responding, try resetting the USB connection to recover. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: fix device ERROR response handlingTilman Schmidt
Clear out pending command that got rejected with 'ERROR' response. This fixes the bug where unloading the driver module would hang with the message: "gigaset: not searching scheduled commands: busy" after a device communication error. Impact: error handling bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: announce if built with debuggingTilman Schmidt
Mention in the driver load announcement whether the driver was built with debugging messages enabled, to facilitate support. Impact: informational message Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: handle isoc frame errors more gracefullyTilman Schmidt
Don't drop the remainder of an URB if an isochronous frame has an error. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: linearize skbTilman Schmidt
The code of the Gigaset driver assumes that sk_buff-s coming from the ISDN4Linux subsystem are always linear. Explicitly calling skb_linearize() is cheap if they are, but much more robust in case they ever aren't. Impact: robustness improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-06gigaset: fix reject/hangup handlingTilman Schmidt
Signal D channel disconnect in a few cases where it was missed, including when an incoming call is disconnected before it was accepted. Impact: error handling improvement Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-19tty: gigaset: really fix chars_in_bufferTilman Schmidt
The tty_operation chars_in_buffer() is not allowed to return a negative value to signal an error. Corrects the problem flagged by commit 23198fda7182969b619613a555f8645fdc3dc334, "tty: fix chars_in_buffers". Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: "David S. Miller" <davem@davemloft.net> Cc: stable <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-07-20tty: fix chars_in_buffersAlan Cox
This function does not have an error return and returning an error is instead interpreted as having a lot of pending bytes. Reported by Jeff Harris who provided a list of some of the remaining offenders. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-02gigaset: drop pointless checkTilman Schmidt
Drop a sanity check which doesn't serve any useful purpose anymore. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-02gigaset: accept connection establishment messages in any orderTilman Schmidt
ISDN connection setup failed if the "connection active" and "B channel up" messages from the device arrived in a different order than expected. Modify the state machine to accept them in any order. Impact: bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> CC: stable <stable@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-25Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/ath/ath5k/phy.c drivers/net/wireless/iwlwifi/iwl-agn.c drivers/net/wireless/iwlwifi/iwl3945-base.c
2009-05-21gigaset: beyond ARRAY_SIZE of iwb->dataRoel Kluin
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: remove unused structure member rcvbytesTilman Schmidt
The B channel data structure member rcvbytes was never set to anything else but zero, so drop it. Impact: cleanup Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: remove UNDOCREQ config optionTilman Schmidt
Drop the kernel config option GIGASET_UNDOCREQ, permanently activating the code it controlled, as there have been no reports of problems caused by its activation but many problems caused by it being disabled. Also fix a few bad comments while we're at it. Impact: cleanup Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: move up Kconfig inclusion pointTilman Schmidt
In preparation for porting to kernel CAPI subsystem, include the Gigaset driver's Kconfig directly from ISDN's instead of I4L's. Impact: Kconfig reorganisation, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: fix error return codeTilman Schmidt
gigaset_register_to_LL() is expected to print a message and return 0 on failure. Make it do so consistently. Impact: error handling bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: skip unnecessary hex formattingTilman Schmidt
Don't generate the hex representation of the payload data if it isn't actually used afterwards. Impact: optimization Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: fix possible oops in error handlingTilman Schmidt
Use pr_warning() / pr_err() instead of dev_warn() / dev_err() in two places where the dev pointer isn't guaranteed to be valid. Impact: error handling bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17gigaset: remove obsolete references to m10x state tableTilman Schmidt
The separation of state tables for base and M10x has long been removed. Clean up remaining traces of it. Impact: cleanup Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-06gigaset: in file ops, check for device disconnect before anything elseTilman Schmidt
When the device is disconnected, the dev structure goes away, so trying to report another error via dev_printk is bound to oops. To avoid that, first check whether the device is still connected and return quietly if it isn't. Impact: error handling Signed-off-by: Tilman Schmidt <tilman@imap.cc> Reported-by: Paul Bolle <pebolle@tiscali.nl> Tested-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-06bas_gigaset: use tasklet_hi_schedule for timing critical taskletsTilman Schmidt
The tasklets for isochronous data transfer need to run within 8 msec to avoid over/underruns, so schedule them with high priority to fix reported issues with occasional over/underruns. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-26Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller
Conflicts: drivers/net/wimax/i2400m/usb-notif.c
2009-03-24platform: make better use of to_platform_{device,driver}() macrosEric Miao
This helps the code look more consistent and cleaner. Signed-off-by: Eric Miao <eric.miao@marvell.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-20Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/virtio_net.c
2009-03-18bas_gigaset: correctly allocate USB interrupt transfer bufferTilman Schmidt
Every USB transfer buffer has to be allocated individually by kmalloc. Impact: bugfix, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> Tested-by: Kolja Waschk <kawk@users.sourceforge.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-10gigaset: return -ENOTTY for unimplemented functionsPaul Bolle
A number of functions in the usb_gigaset module will return -EINVAL if CONFIG_GIGASET_UNDOCREQ is not set. Make these return -ENOTTY as it's more specific and it might make it easier to see (from userspace) why these functions actually fail. Impact: some error return codes changed Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-10gigaset: Kconfig cleanupTilman Schmidt
Streamline dependencies and remove some obsolete or redundant comments in the Gigaset ISDN driver's Kconfig file. In particular, remove the strong warning against the GIGASET_UNDOCREQ option, as in seven years of existence, the code in question has never been reported to cause any harm. Impact: Kconfig cleanup, no functional change Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26gigaset: ifdef cleanupTilman Schmidt
Remove unnecessary #ifdef-s and #if-0-ed code sections. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26gigaset: use pr_err() and pr_info()Tilman Schmidt
Switch from private printk wrapper macros to using pr_err() and pr_info() from linux/kernel.h, at the same time unifying a few error messages. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-29gigaset: get rid of info() and warn() macrosTilman Schmidt
Join the move away from the obsolete info() macro, opencoding the remaining uses. While we're at it, also get rid of the warn() macro by promoting the three remaining uses to err(). Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-29gigaset: remove unnecessary poll methodTilman Schmidt
The N_GIGASET_M101 line discipline implemented by the ser_gigaset driver does not transfer any data from/to userspace through the tty interface. Therefore a poll method is not needed. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-13tty: fix up gigaset a bitAlan Cox
Stephen's fixes reminded me that gigaset is still rather broken so fix it up a bit Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13tty: Fallout from tty-move-canon-specialsStephen Rothwell
Today's linux-next build (x86_64 allmodconfig) failed like this: /drivers/char/tty_ioctl.c: In function 'change_termios': drivers/isdn/capi/capi.c:1234: error: implicit declaration of function 'n_tty_ioctl' drivers/isdn/gigaset/ser-gigaset.c: In function 'gigaset_tty_ioctl': drivers/isdn/gigaset/ser-gigaset.c:648: error: implicit declaration of function 'n_tty_ioctl' Introduced by commit 686b5e4aea05a80e370dc931b7f4a8d03c80da54 ("tty-move-canon-specials"). I added the following patch (which may not be correct). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-30isdn: use the common ascii hex helpersHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-24gigaset: gigaset_isowbuf_getbytes() may return signed unnoticedTilman Schmidt
ifd->offset is unsigned. gigaset_isowbuf_getbytes() may return signed unnoticed. Revised version of patch originally submitted by Roel Kluin <12o3l@tiscali.nl>. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-24gigaset: use dev_ macros for messagesTilman Schmidt
The info() / warn() / err() macros from usb.h for generating kernel messages are considered inferior to dev_info() / dev_warn() / dev_err() from device.h. Replace them where possible. Also correct the severity level and improve the text of one message. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20tty: Ldisc revampAlan Cox
Move the line disciplines towards a conventional ->ops arrangement. For the moment the actual 'tty_ldisc' struct in the tty is kept as part of the tty struct but this can then be changed if it turns out that when it all settles down we want to refcount ldiscs separately to the tty. Pull the ldisc code out of /proc and put it with our ldisc code. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30tty: The big operations reworkAlan Cox
- Operations are now a shared const function block as with most other Linux objects - Introduce wrappers for some optional functions to get consistent behaviour - Wrap put_char which used to be patched by the tty layer - Document which functions are needed/optional - Make put_char report success/fail - Cache the driver->ops pointer in the tty as tty->ops - Remove various surplus lock calls we no longer need - Remove proc_write method as noted by Alexey Dobriyan - Introduce some missing sanity checks where certain driver/ldisc combinations would oops as they didn't check needed methods were present [akpm@linux-foundation.org: fix fs/compat_ioctl.c build] [akpm@linux-foundation.org: fix isicom] [akpm@linux-foundation.org: fix arch/ia64/hp/sim/simserial.c build] [akpm@linux-foundation.org: fix kgdb] Signed-off-by: Alan Cox <alan@redhat.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-07gigaset: fix Oops on module unload regressionTilman Schmidt
The card state mutex was only initialized when a device was connected, but used during unload unconditionally, leading to an Oops if a driver was loaded and unloaded again without ever connecting a device. Fix this by initializing the mutex as soon as the structure is allocated. Also add a missing mutex unlock revealed in the same execution path. This fixes a possible Oops in 2.6.25-rc that was introduced by commit e468c04894f36045cf93d1384183a461014b6840 ("Gigaset: permit module unload"). Thanks to Roland Kletzing for reporting this problem. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Tested-by: Roland Kletzing <devzero@web.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06ser_gigaset: convert mutex to completionTilman Schmidt
The ser_gigaset ISDN driver was using a mutex in its close() method for waiting for other running ldisc methods to finish. That's what completions are for. Incidentally, this also avoids a spurious "BUG: lock held at task exit time" message when the driver's userspace daemon daemonizes itself. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06Gigaset: permit module unloadTilman Schmidt
Fix the initialization and reference counting of the Gigaset driver modules so that they can be unloaded when they are not actually in use. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Greg KH <gregkh@suse.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06gigaset: atomic cleanupTilman Schmidt
Convert atomic_t variables that don't actually use atomic_t functionality to int. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06usb_gigaset: suspend supportTilman Schmidt
Add basic suspend/resume support to the usb_gigaset driver for the Siemens Gigaset M105 USB DECT adapter. Only the USB aspects are handled so far; the ISDN subsystem is not notified in any way, for lack of information about how to do that. The driver does not check for active connections before suspending. They will be dropped when the device loses USB power. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06bas_gigaset: suspend supportTilman Schmidt
Add basic suspend/resume support to the bas_gigaset ISDN driver for the Siemens Gigaset SX255 series of ISDN DECT bases. Only the USB aspects are handled so far; the ISDN subsystem is not notified in any way, for lack of information about how to do that. The driver will refuse to suspend if a connection is active. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06gigaset: code cleanupsTilman Schmidt
Some cleanups to the bas-gigaset and usb-gigaset USB ISDN drivers: - simplified error handling - improved debug messages - readability improvements - removal of obsolete defines and comments Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06gigaset: clean up urb->status usageTilman Schmidt
Make there only be one reference to urb->status per URB callback, and none outside, in preparation for removal of that field. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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