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linux-2.6
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linux-2.6/drivers
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Russ Gorby 6ab8fba7fc tty: n_gsm: Added refcount usage to gsm_mux and gsm_dlci structs 
The gsm_mux is created/destroyed when ldisc is
opened/closed but clients of the MUX channel devices (gsmttyN)
may access this structure as long as the TTYs are open.
For the open, the ldisc open is guaranteed to preceed the TTY open,
but the close has no such guaranteed ordering. As a result,
the gsm_mux can be freed in the ldisc close before being accessed
by one of the TTY clients. This can happen if the ldisc is removed
while there are open, active MUX channels.
A similar situation exists for DLCI-0, it is basically a resource
shared by MUX and DLCI  , and should not be freed while they can
be accessed

To avoid this, gsm_mux and dlcis now have a reference counter
ldisc open takes a reference on the mux and all the dlcis
gsmtty_open takes a reference on the mux, dlci0 and its specific
dlci. Dropping the last reference initiates the actual free.

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
 		2011-07-01 15:34:50 -07:00
..
accessibility
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acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2011-05-29 11:19:16 -07:00
amba ARM: 6829/1: amba: make hardcoded periphid override hardware 2011-05-26 10:33:34 +01:00
ata Merge branch 'for-2.6.40/core' of git://git.kernel.dk/linux-2.6-block 2011-05-25 09:14:07 -07:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
auxdisplay
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base mm: per-node vmstat: show proper vmstats 2011-05-25 08:39:07 -07:00
bcma drivers/bcma/host_pci.c needs slab.h 2011-05-26 17:12:32 -07:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2011-06-04 08:11:26 +09:00
bluetooth Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
cdrom block: fix mismerge of the DISK_EVENT_MEDIA_CHANGE removal 2011-06-02 05:29:19 +09:00
char virtio console: don't manually set or finalize VIRTIO_CONSOLE_F_MULTIPORT. 2011-05-30 11:14:13 +09:30
clk
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clocksource Revert "clocksource: sh_cmt: Runtime PM support" 2011-05-31 15:26:42 +09:00
connector
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cpufreq cpufreq: make DB8500 cpufreq driver compile 2011-05-24 22:20:14 +02:00
cpuidle Merge branch 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 2011-05-29 11:18:09 -07:00
crypto [S390] ap: skip device registration on type probe failure 2011-05-23 10:24:29 +02:00
dca
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dio
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dma dmaengine: shdma: fix a regression: initialise DMA channels for memcpy 2011-06-02 14:40:43 +09:00
edac edac,rcu: use synchronize_rcu() instead of call_rcu()+rcu_barrier() 2011-05-26 17:12:37 -07:00
eisa
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firewire
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firmware Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
gpio arm gpio drivers: make them 'depends on ARM' 2011-05-29 14:06:42 -07:00
gpu vmscan: change shrinker API by passing shrink_control struct 2011-05-25 08:39:26 -07:00
hid Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-05-23 12:33:02 -07:00
hwmon hwmon: (max6642): Better chip detection schema 2011-06-04 10:34:28 -07:00
hwspinlock
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i2c mfd: Use mfd cell platform_data for timberdale cells platform bits 2011-05-26 19:45:05 +02:00
ide block: fix mismerge of the DISK_EVENT_MEDIA_CHANGE removal 2011-06-02 05:29:19 +09:00
idle
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ieee802154
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infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2011-05-26 12:13:57 -07:00
input Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
isdn Revert "tty: make receive_buf() return the amout of bytes received" 2011-06-04 06:33:24 +09:00
leds leds: Add ASIC3 LED support 2011-05-26 19:45:46 +02:00
lguest
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macintosh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
mca
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md dm kcopyd: return client directly and not through a pointer 2011-05-29 13:03:13 +01:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2011-05-27 10:14:22 -07:00
memstick
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message Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
mfd mfd: Fix build breakage caused by tps65910 gpio directory move 2011-05-28 08:38:55 +02:00
misc pch_phub: Fix register miss-setting issue 2011-07-01 15:33:10 -07:00
mmc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-05-27 19:51:32 -07:00
mtd Merge git://git.infradead.org/mtd-2.6 2011-05-27 20:06:53 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2011-06-04 23:16:00 +09:00
nfc
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nubus
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of Merge branch 'devicetree/arm-next' of git://git.secretlab.ca/git/linux-2.6 into devel-stable 2011-05-25 00:08:17 +01:00
oprofile oprofile: Use linux/mutex.h 2011-05-24 12:45:59 +02:00
parisc
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parport parport/serial: add support for Timedia/SUNIX cards to parport_serial 2011-06-07 09:35:57 -07:00
pci Merge git://git.infradead.org/iommu-2.6 2011-06-02 05:48:50 +09:00
pcmcia
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platform Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 2011-05-29 11:44:33 -07:00
pnp
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power Merge git://git.infradead.org/battery-2.6 2011-05-27 10:12:35 -07:00
pps
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ps3
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ptp ptp: Added a clock driver for the National Semiconductor PHYTER. 2011-05-23 13:10:23 -07:00
rapidio
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regulator regulator: Fix _regulator_get_voltage if get_voltage callback is NULL 2011-05-27 10:49:30 +01:00
rtc drivers/rtc/rtc-mxc.c: remove defines already included in rtc.h 2011-05-26 17:12:33 -07:00
s390 [S390] irq: merge irq.c and s390_ext.c 2011-05-26 09:48:24 +02:00
sbus
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scsi [SCSI] Fix oops caused by queue refcounting failure 2011-06-02 18:34:43 +09:00
sfi
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sh Merge branch 'sh/genirq-threading' into sh-latest 2011-05-23 11:36:14 +09:00
sn
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spi spi/spi_bfin_sport: new driver for a SPI bus via the Blackfin SPORT peripheral 2011-05-27 01:23:54 -06:00
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
staging Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-05-26 13:19:00 -07:00
target [SCSI] target: Convert TASK_ATTR to scsi_tcq.h definitions 2011-05-24 13:03:56 -04:00
tc
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telephony
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thermal
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tty tty: n_gsm: Added refcount usage to gsm_mux and gsm_dlci structs 2011-07-01 15:34:50 -07:00
uio
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usb Merge branch 'for-usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci 2011-05-28 12:36:15 -07:00
uwb
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vhost vhost: support event index 2011-05-30 11:14:15 +09:30
video drivers/video/mb862xx/mb862xxfbdrv.c needs uaccess.h 2011-05-26 17:12:32 -07:00
virtio virtio: add api for delayed callbacks 2011-05-30 11:14:16 +09:30
vlynq
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w1 w1: add Maxim/Dallas DS2780 Stand-Alone Fuel Gauge IC support 2011-05-26 17:12:38 -07:00
watchdog mfd: Use mfd cell platform_data for rdc321x cells platform bits 2011-05-26 19:45:06 +02:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/djm/tmem 2011-05-26 10:50:56 -07:00
zorro
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Kconfig ptp: Added a brand new class driver for ptp clocks. 2011-05-23 13:01:00 -07:00
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2011-05-28 12:35:15 -07:00