Commit Graph

112 Commits

Author SHA1 Message Date
Jiri Kosina d014d04386 Merge branch 'for-next' into for-linus
Conflicts:

	kernel/irq/chip.c
2009-12-07 18:36:35 +01:00
André Goddard Rosa af901ca181 tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-12-04 15:39:55 +01:00
David S. Miller e29d436317 Revert "isdn: isdn_ppp: Use SKB list facilities instead of home-grown implementation."
This reverts commit 38783e6713.

It causes kernel bugzilla #14594

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-15 22:23:47 -08:00
Dirk Hohndel 06fe9fb418 tree-wide: fix a very frequent spelling mistake
something-bility is spelled as something-blity
so a grep for 'blit' would find these lines

this is so trivial that I didn't split it by subsystem / copy
additional maintainers - all changes are to comments
The only purpose is to get fewer false positives when grepping
around the kernel sources.

Signed-off-by: Dirk Hohndel <hohndel@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-09 09:40:54 +01:00
Xiaotian Feng 2bd9af046f isdn: fix possible circular locking dependency
There's a circular locking dependency:

---> isdn_net_get_locked_lp
    --->lock &nd->queue_lock
    --->lock &nd->queue->xmit_lock
    .....................
    ---->unlock &nd->queue_lock

---> isdn_net_writebuf_skb (called with &nd->queue->xmit_lock locked)
    ---->isdn_net_inc_frame_cnt
         ---->isdn_net_device_busy
              ----> lock &nd->queue_lock

This will trigger lockdep warnings:

 =======================================================
 [ INFO: possible circular locking dependency detected ]
 2.6.32-rc4-testing #7
 -------------------------------------------------------
 ipppd/28379 is trying to acquire lock:
 (&netdev->queue_lock){......}, at: [<e62ad0fd>] isdn_net_device_busy+0x2c/0x74 [isdn]

 but task is already holding lock:
 (&netdev->local->xmit_lock){+.....}, at: [<e62aefc2>] isdn_net_write_super+0x3f/0x6e [isdn]

 which lock already depends on the new lock.
 .......

 We don't need to lock nd->queue->xmit_lock to protect single
isdn_net_lp_busy(). This can fix above lockdep warnings.

Reported-and-tested-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Xiaotian Feng <xtfeng@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-22 18:27:53 -07:00
Randy Dunlap 8823ad31cd isdn: fix netjet/isdnhdlc build errors
Commit cb3824bade didn't fix this problem.

Fix build errors in netjet, using isdnhdlc module:

drivers/built-in.o: In function `mode_tiger':
netjet.c:(.text+0x1ca0c7): undefined reference to `isdnhdlc_rcv_init'
netjet.c:(.text+0x1ca0d4): undefined reference to `isdnhdlc_out_init'
drivers/built-in.o: In function `fill_dma':
netjet.c:(.text+0x1ca2bd): undefined reference to `isdnhdlc_encode'
drivers/built-in.o: In function `read_dma':
netjet.c:(.text+0x1ca614): undefined reference to `isdnhdlc_decode'
drivers/built-in.o: In function `nj_irq':
netjet.c:(.text+0x1cb07a): undefined reference to `isdnhdlc_encode'

drivers/built-in.o: In function `isdnhdlc_decode':
(.text+0x1c2088): undefined reference to `crc_ccitt_table'
drivers/built-in.o: In function `isdnhdlc_encode':
(.text+0x1c2339): undefined reference to `crc_ccitt_table'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-28 12:47:36 -07:00
Anand Gadiyar 411c940385 trivial: fix typo "for for" in multiple files
trivial: fix typo "for for" in multiple files

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-09-21 15:14:54 +02:00
Stephen Hemminger 8b62ff2dbc isdn: convert to netdev_tx_t
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 01:13:16 -07:00
David S. Miller aa11d958d1 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	arch/microblaze/include/asm/socket.h
2009-08-12 17:44:53 -07:00
Karsten Keil f3fad223ed ISDN: Fix isdnhdlc for one byte hdlc packets
Normally HDLC packets contain more as one byte (e.g a X25/X75 header).
But if you use plain HDLC framing, the current code do not encode
1 byte payloads, this patch fix that.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
2009-07-25 20:16:17 +02:00
Karsten Keil c38fc3bc2e ISDN: Add support for none reverse bitstreams to isdnhdc
The original isdnhdlc code was developed for devices which had
reversed bitorder in the byte stream. Adding code to handle normal
bitstreams as well.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
2009-07-25 20:16:01 +02:00
Karsten Keil 6bd4bcd3cd ISDN: Clean up isdnhdlc code
Clean up isdnhdlc to meet current code standard.
Remove hint to already removed bit reversal table.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
2009-07-25 20:15:54 +02:00
Karsten Keil cb3824bade ISDN: Make isdnhdlc usable for other ISDN drivers
isdnhdlc is useful for other ISDN drivers as well.
Move the include file to a central location and the source
to the central isdn location.

Signed-off-by: Karsten Keil <keil@b1-systems.de>
2009-07-25 20:15:21 +02:00
Alexey Dobriyan 405f55712d headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12 12:22:34 -07:00
Patrick McHardy ec634fe328 net: convert remaining non-symbolic return values in ndo_start_xmit() functions
This patch converts the remaining occurences of raw return values to their
symbolic counterparts in ndo_start_xmit() functions that were missed by the
previous automatic conversion.

Additionally code that assumed the symbolic value of NETDEV_TX_OK to be zero
is changed to explicitly use NETDEV_TX_OK.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-05 19:23:38 -07:00
Patrick McHardy 6ed106549d net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions
This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.

Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-05 19:16:04 -07:00
Patrick McHardy d77eeb702c net: fix network drivers ndo_start_xmit() return values
Fix up remaining drivers returning a magic or an errno value from their
ndo_start_xmit() functions that were missed in the first pass:

- isdn_net: missed conversion
- bpqether: missed conversion: skb is freed, so return NETDEV_TX_OK
- hp100: intention appears to be to resubmit skb once resources are
  available, but due to no queue handling it is dropped for now.
- lapbether: skb is freed, so return NETDEV_TX_OK

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-17 04:31:16 -07:00
Patrick McHardy 5b54814022 net: use symbolic values for ndo_start_xmit() return codes
Convert magic values 1 and -1 to NETDEV_TX_BUSY and NETDEV_TX_LOCKED respectively.

0 (NETDEV_TX_OK) is not changed to keep the noise down, except in very few cases
where its in direct proximity to one of the other values.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-13 01:18:50 -07:00
Roel Kluin 395df11f5f drivers/isdn/i4l/isdn_tty.c: fix check for array overindexing
The check for overindexing of dev->mdm.info[] has an off-by-one.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Karsten Keil <keil@b1-systems.de>
2009-06-11 19:05:10 +02:00
Tilman Schmidt 5a1888ea99 gigaset: move up Kconfig inclusion point
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>
2009-05-17 20:51:26 -07:00
Daniele Venzano 26285ba358 isdn: Fix missing ifdef in isdn_ppp
The following patch fixes a warning caused by a missing ifdef in
isdn_ppp.c. A function was defined, but never used if CONFIG_IPPP_FILTER
was not defined.

The warning was: 'get_filter' defined but not used
Patch is against 2.6.28.1

Signed-off-by: Daniele Venzano <venza@brownhat.org>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-26 12:24:38 -08:00
Paul Bolle 5f3e54057c i4l: minor cleanups
Minor cleanups, either made possible or obvious after commit d700555 (I4l:
convert to net_device_ops).

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-14 14:42:21 -08:00
Paul Bolle bae5843160 i4l: do not print a warning when shutting down an i4l ppp interface
When an i4l ppp interface is shut down (e.g. with /sbin/ifdown ippp0) a
scary warning is logged:
    
    isdn_free_channel: called with invalid drv(-1) or channel(-1)
    
This warning is caused by isdn_net_unbind_channel(), which always calls
isdn_free_channel() even if isdn_net_local->isdn_device and
isdn_net_local->isdn_channel are (still) in a perfectly acceptable
default state, so let's not do that.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-14 14:41:00 -08:00
Stephen Hemminger d700555bda I4l: convert to net_device_ops
Add net_device_ops and use interal stats 

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-07 18:04:17 -08:00
Wang Chen 838361fe78 isdn: Kill directly reference of netdev->priv
Simply use netdev_priv() to replace netdev->priv.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-03 15:49:46 -08:00
Harvey Harrison c19d0369d4 isdn: isdn_net.c annotate struct ip_ports and trivial sparse fixes
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-20 04:10:51 -08:00
David S. Miller 198d6ba4d7 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/isdn/i4l/isdn_net.c
	fs/cifs/connect.c
2008-11-18 23:38:23 -08:00
Harvey Harrison 584c650b4e isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply
commit a144ea4b7a [IPV4]: annotate struct in_ifaddr

Missed this extra byteswap as the isdn inlines hide the htonl inside
put_u32 which causes an extra byteswap on little-endian arches.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-16 23:03:45 -08:00
Harvey Harrison 00bcd522ea isdn: use %pI4, remove get_{u8/u16/u32} and put_{u8/u16/u32} inlines
They would have been better named as get_be16, put_be16, etc.
as they were hiding an endian shift inside.

They don't add much over explicitly coding the byteshifting
and gcc sometimes has a problem with builtin_constant_p inside
inline functions, so it may do a better job of byteswapping
at compile time rather than runtime.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-13 22:41:29 -08:00
Harvey Harrison 8cf14e3837 net: easy removals of HIPQUAD using %pI4 format
As a bonus, removes some unnecessary byteswapping.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29 22:43:33 -07:00
David S. Miller 38783e6713 isdn: isdn_ppp: Use SKB list facilities instead of home-grown implementation.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-22 01:15:02 -07:00
David S. Miller 49997d7515 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	Documentation/powerpc/booting-without-of.txt
	drivers/atm/Makefile
	drivers/net/fs_enet/fs_enet-main.c
	drivers/pci/pci-acpi.c
	net/8021q/vlan.c
	net/iucv/iucv.c
2008-07-18 02:39:39 -07:00
Jonathan Corbet 2fceef397f Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
Darren Jenkins 4fc89e3911 drivers/isdn/i4l/isdn_common.c fix small resource leak
Coverity CID: 1356 RESOURCE_LEAK

I found a very old patch for this that was Acked but did not get applied
https://lists.linux-foundation.org/pipermail/kernel-janitors/2006-September/016362.html

There looks to be a small leak in isdn_writebuf_stub() in isdn_common.c, when
copy_from_user() returns an un-copied data length (length != 0).  The below
patch should be a minimally invasive fix.

Signed-off-by: Darren Jenkins <darrenrjenkins@gmailcom>
Acked-by: Karsten Keil <kkeil@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-12 14:33:41 -07:00
David S. Miller 5aa709954a pkt_sched: Add qdisc_reset_all_tx().
Isolate callers that want to simply reset all the TX qdiscs from the
details of TX queues.

Use this in the ISDN code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 22:59:10 -07:00
David S. Miller b0e1e6462d netdev: Move rest of qdisc state into struct netdev_queue
Now qdisc, qdisc_sleeping, and qdisc_list also live there.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 17:42:10 -07:00
Jonathan Corbet 1bcaa0bd6f isdn: cdev lock_kernel() pushdown
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:49 -06:00
Alan Cox 978e595f88 tty/serial: lay the foundations for the next set of reworks
- Stop drivers calling their own flush method indirectly, it obfuscates code
  and it will change soon anyway

- A few more lock_kernel paths temporarily needed in some driver internal
  waiting code

- Remove private put_char method that does a write call for one char - we
  have that anyway

- Most but not yet all of the termios copy under lock fixing (some has other
  dependencies to follow)

- Note a few locking bugs in drivers found in the process

- Kill remaining [ab]users of TIOCG/SSOFTCAR in the driver, these must go to
  fix the termios locking

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:45 -07:00
Alan Cox 6e4d376c66 isdn_tty: Prepare for BKL push down
Three things here
- Remove softcar handler
- Correct termios change detection logic
- Wrap break/ioctl in lock_kernel ready to drop it in the caller

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30 08:29:40 -07:00
Harvey Harrison 156f1ed640 isdn: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:34 -07:00
Paul Bolle d2dcba612b [ISDN]: Do not validate ISDN net device address prior to interface-up
Commit bada339 (Validate device addr prior to interface-up) caused a regression
in the ISDN network code, see: http://bugzilla.kernel.org/show_bug.cgi?id=9923
The trivial fix is to remove the pointer to eth_validate_addr() in the
net_device struct in isdn_net_init().
    
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-13 22:44:20 -07:00
Linus Torvalds 609eb39c8d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits)
  [SCTP]: Fix local_addr deletions during list traversals.
  net: fix build with CONFIG_NET=n
  [TCP]: Prevent sending past receiver window with TSO (at last skb)
  rt2x00: Add new D-Link USB ID
  rt2x00: never disable multicast because it disables broadcast too
  libertas: fix the 'compare command with itself' properly
  drivers/net/Kconfig: fix whitespace for GELIC_WIRELESS entry
  [NETFILTER]: nf_queue: don't return error when unregistering a non-existant handler
  [NETFILTER]: nfnetlink_queue: fix EPERM when binding/unbinding and instance 0 exists
  [NETFILTER]: nfnetlink_log: fix EPERM when binding/unbinding and instance 0 exists
  [NETFILTER]: nf_conntrack: replace horrible hack with ksize()
  [NETFILTER]: nf_conntrack: add \n to "expectation table full" message
  [NETFILTER]: xt_time: fix failure to match on Sundays
  [NETFILTER]: nfnetlink_log: fix computation of netlink skb size
  [NETFILTER]: nfnetlink_queue: fix computation of allocated size for netlink skb.
  [NETFILTER]: nfnetlink: fix ifdef in nfnetlink_compat.h
  [NET]: include <linux/types.h> into linux/ethtool.h for __u* typedef
  [NET]: Make /proc/net a symlink on /proc/self/net (v3)
  RxRPC: fix rxrpc_recvmsg()'s returning of msg_name
  net/enc28j60: oops fix
  ...
2008-03-12 13:08:09 -07:00
Harvey Harrison d4f7751495 isdn: replace __inline with inline
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 18:37:39 -08:00
Julia Lawall ae91d60ba8 drivers/isdn: correct use of ! and &
In commit e6bafba5b4 ("wmi: (!x & y)
strikes again"), a bug was fixed that involved converting !x & y to !(x
& y).  The code below shows the same pattern, and thus should perhaps be
fixed in the same way.

This is not tested and clearly changes the semantics, so it is only
something to consider.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@ expression E1,E2; @@
(
  !E1 & !E2
|
- !E1 & E2
+ !(E1 & E2)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:16 -08:00
Daniel Walker 4749380ed6 drivers/isdn/i4l/isdn_tty.c: remove write_sem
I couldn't find any users, so removing it..

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:07 -08:00
Alexey Dobriyan eaa0ff15c3 fix ! versus & precedence in various places
Fix various instances of

	if (!expr & mask)

which should probably have been

	if (!(expr & mask))

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Peter Osterlund <petero2@telia.com>
Cc: Karsten Keil <kkeil@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:40:59 -08:00
Matthias Goebl 7fde4d779b [ISDN]: i4l: Fix DLE handling for i4l-audio
The DLE handling in i4l-audio seems to be broken.

It produces spurious DLEs so asterisk 1.2.24 with chan_modem_i4l
gets irritated, the error message is:
"chan_modem_i4l.c:450 i4l_read: Value of escape is ^ (17)".
-> There shouldn't be a DLE-^.
If a spurious DLE-ETX occurs, the audio connection even dies.
I use a "AVM Fritz!PCI" isdn card.

I found two issues that only appear if ISDN_AUDIO_SKB_DLECOUNT(skb) > 0:
- The loop in isdn_tty.c:isdn_tty_try_read() doesn't escape a DLE if it's
  the last character.

- The loop in isdn_common.c:isdn_readbchan_tty() doesn't copy its characters,
  it only remembers the last one ("last = *p;").

  Compare it with the loop in isdn_common.c:isdn_readbchan(), that *does*
  copy them ("*cp++ = *p;") correctly.
  The special handling of the "last" character made it more difficult.
  I compared it to linux-2.4.19: There was no "last"-handling and both loops
  did escape and copy all characters correctly.

Signed-off-by: Matthias Goebl <matthias.goebl@goebl.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 03:55:44 -08:00
Matthias Goebl 00409bb045 [ISDN] i4l: 'NO CARRIER' message lost after ldisc flush
The ISDN tty layer doesn't produce a 'NO CARRIER' message after hangup.

I suppose it broke when tty_buffer_flush() has been added to
tty_ldisc_flush() in the commit below.

For isdn_tty_modem_result(RESULT_NO_CARRIER..) the
message inserted via isdn_tty_at_cout() -> tty_insert_flip_char()
is flushed immediately by tty_ldisc_flush() -> tty_buffer_flush().
More annoyingly, the audio abort sequence DLE-ETX is also lost.

This patch fixes only active audio connections, because I assume that nobody
changes the line discipline for audio.

For non-audio connections the problem remains.
Maybe we can remove the tty_ldisc_flush() in isdn_tty_modem_result()
at all because it's done at tty_close?

On Mon, May 07, 2007 at 04:05:57PM -0500, Paul Fulghum wrote:
> Flush the tty flip buffer when the line discipline
> input queue is flushed, including the user call
> tcflush(TCIFLUSH/TCIOFLUSH). This prevents unexpected
> stale data after a user application calls tcflush().
>
> Cc: Alan Cox <alan@lxorguk.org.uk>
> Cc: Antonino Ingargiola <tritemio@gmail.com>
> Signed-off-by: Paul Fulghum <paulkf@microgate.com>
>
> --- a/drivers/char/tty_io.c	2007-05-04 05:46:55.000000000 -0500
> +++ b/drivers/char/tty_io.c	2007-05-05 03:23:46.000000000 -0500
> @@ -1240,6 +1263,7 @@ void tty_ldisc_flush(struct tty_struct *
>  			ld->flush_buffer(tty);
>  		tty_ldisc_deref(ld);
>  	}
> +	tty_buffer_flush(tty);
[..]

Signed-off-by: Matthias Goebl <matthias.goebl@goebl.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-04 03:55:40 -08:00
Karsten Keil eafe1aa37e I4L: fix isdn_ioctl memory overrun vulnerability
Fix possible memory overrun issue in the isdn ioctl code.

Found by ADLAB <adlab@venustech.com.cn>

Signed-off-by: Karsten Keil <kkeil@suse.de>
Cc: ADLAB <adlab@venustech.com.cn>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-03 08:13:17 -08:00
Karsten Keil 0f13864e5b isdn: avoid copying overly-long strings
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=9416

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-26 19:08:18 -08:00