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path: root/drivers/char/synclink_gt.c (follow)
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2010-08-23synclink: add mutex_unlock() on error pathDan Carpenter1-1/+3
There is a path which still holds its mutex here. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10tty: release BTM while sleeping in block_til_readyArnd Bergmann1-0/+2
Most tty drivers may block while opening a device. Since this possibly depends on another thread closing it first and both threads may need the BTM, we need to release it here. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10synclink: reworking locking a bitAlan Cox1-1/+11
Use the port mutex and port lock to fix the various races. The locking still isn't totally consistent but its better than before. Wants switching to the port helpers. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10synclink: kill the big kernel lockAlan Cox1-44/+34
We don't need it while waiting and we can lock the ioctls using the port mutex. While at it eliminate use of the hangup mutex and switch to the port mutex. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-07-20synclink: use ARRAY_SIZEKulikov Vasiliy1-1/+1
Change sizeof(x) / sizeof(*x) to ARRAY_SIZE(x). Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Acked-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-03-02serial: synclink_gt: dropped transmit data bugfixPaul Fulghum1-81/+105
Fix transmit bug that could drop send data if write() called close to serial transmitter going idle after sending previous data. Bug is caused by incorrect use of device information member tx_count. Driver originally processed one data block (write call) at a time, waiting for transmit idle before sending more. tx_count recorded how much data was loaded in DMA buffers on write(), and was cleared on send completion. tx_count use was overloaded to record accumulated data from put_char() callback when transmitter was idle. A bug was introduced when transmit code was reworked to allow multiple blocks of data in the tx DMA buffers which keeps transmitter from going idle between blocks. tx_count was set to size of last block loaded, cleared when tx went idle, and monitored to know when to restart transmitter without proper synchronization. tx_count could be cleared when unsent data remained in DMA buffers and transmitter required restarting, effectively dropping unsent data. Solution: 1. tx_count now used only to track accumulated data from put_char 2. DMA buffer state tracked by direct inspection of descriptors with spinlock synchronization 3. consolidate these tasks in tx_load() : a. check for available buffer space b. load buffers c. restart DMA and or serial transmitter as needed These steps were previously duplicated in multiple places, sometimes incompletely. 4. fix use of tx_count as active transmit indicator, instead using tx_active which is meant for that purpose Signed-off-by: Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-01hdlc: convert to netdev_tx_tStephen Hemminger1-4/+3
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-12headers: smp_lock.h reduxAlexey Dobriyan1-0/+1
* 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>
2009-06-24synclink_gt: fix transmit race and timeoutPaul Fulghum1-42/+30
Fix race condition when adding transmit data to active DMA buffer ring that can cause transmit stall. Update transmit timeout when adding data to active DMA buffer ring. Base transmit timeout on amount of buffered data instead of using fixed value. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: synclink_gt add receive pio modePaul Fulghum1-9/+68
Add receive programmed IO mode to reduce receive latency when using low data rates. The receive FIFO trigger level of 128 bytes used in DMA mode creates excessive latency when operating at low data rates. PIO mode is selected when user application requests data in blocks of less than 128 bytes. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11tty: Add carrier processing on close to the tty_port coreAlan Cox1-3/+6
Some drivers implement this internally, others miss it out. Push the behaviour into the core code as that way everyone will do it consistently. Update the dtr rts method to raise or lower depending upon flags. Having a single method in this style fits most of the implementations more cleanly than two funtions. We need this in place before we tackle the USB side Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02synclink_gt: add clock optionsPaul Fulghum1-20/+38
Add support for x8 asynchronous sample rate and ability to specify base clock frequency. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01proc tty: switch synclink_gt to ->proc_fopsAlexey Dobriyan1-40/+34
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-21WAN: Convert generic HDLC drivers to netdev_ops.Krzysztof Hałasa1-7/+11
Also remove unneeded last_rx update from Synclink drivers. Synclink part mostly by Stephen Hemminger. Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-15synclink_gt: enable RI interruptPaul Fulghum1-10/+6
- Enable ring indicator interrupt. - Remove vendor specific CVS version tags. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02tty: Introduce some close helpers for portsAlan Cox1-49/+2
Again this is a lot of common code we can unify Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02tty: Pull the dtr raise into tty portAlan Cox1-6/+15
This moves another per device special out of what should be shared open wait paths into private methods Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-02tty_port: Add a port level carrier detect operationAlan Cox1-17/+31
This is the first step to generalising the various pieces of waiting logic duplicated in all sorts of serial drivers. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-16removed unused #include <version.h>Huang Weiyi1-1/+0
The drivers below do not use LINUX_VERSION_CODE nor KERNEL_VERSION. drivers/char/pcmcia/ipwireless/tty.c drivers/char/synclink_gt.c drivers/char/xilinx_hwicap/xilinx_hwicap.c This patch removes the said #include <version.h>. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-07Merge branch 'for-jeff' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6 into tmpJeff Garzik1-5/+0
2008-07-23Remove bogus dosyncppp variable from synclink drivers.Krzysztof Hałasa1-5/+0
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
2008-07-22synclink_gt fix locking in error path of rx enablePaul Fulghum1-1/+3
Fix locking in error path of rx_enable() introduced by synclink_gt-add-rx-dma-buffer-fill-level-control patch. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22synclink_gt: add rx DMA buffer fill level controlPaul Fulghum1-15/+27
Add run time control for receive DMA buffer fill level to allow application to control receive latency when using stream oriented serial protocols that pass receive data to application only after a DMA buffer fills. This was previously a compile time option, but run time control is needed when application changes data rate (and latency requirements) or uses different data rates on different ports. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22synclink_gt: leave transmitter in reset state after configurationPaul Fulghum1-1/+1
Leave the transmitter in reset state after configuration so that transmit signal is held at mark until transmitter is explicitly enabled by application, otherwise transmitter sends idle pattern. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22synclink_gt: improve TIOCOUTQ accuracyPaul Fulghum1-2/+57
Improve the accuracy of TIOCOUTQ value as implemented in chars_in_buffer() method by walking and counting tx DMA buffers, reading controller tx FIFO level and accounting for controller tx shift register. The greatly improves application control of transmit latency at lower data rates. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22synclink_gt: add serial bit order controlPaul Fulghum1-0/+2
Add control of hardware serial bit order between LSB first (default/standard) and MSB first. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22synclink_gt: improve and simplify write methodPaul Fulghum1-27/+11
Improve write method by allowing multiple HDLC frames to be loaded into tx DMA buffer ring for continuous frame transmission. This simplifies the transmit code by using the common procedures for all serial protocols. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-22tty: rework break handlingAlan Cox1-4/+5
Some hardware needs to do break handling itself and may have partial support only. Make break_ctl return an error code. Add a tty driver flag so you can indicate driver hardware side break support. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-16/+12
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (1232 commits) iucv: Fix bad merging. net_sched: Add size table for qdiscs net_sched: Add accessor function for packet length for qdiscs net_sched: Add qdisc_enqueue wrapper highmem: Export totalhigh_pages. ipv6 mcast: Omit redundant address family checks in ip6_mc_source(). net: Use standard structures for generic socket address structures. ipv6 netns: Make several "global" sysctl variables namespace aware. netns: Use net_eq() to compare net-namespaces for optimization. ipv6: remove unused macros from net/ipv6.h ipv6: remove unused parameter from ip6_ra_control tcp: fix kernel panic with listening_get_next tcp: Remove redundant checks when setting eff_sacks tcp: options clean up tcp: Fix MD5 signatures for non-linear skbs sctp: Update sctp global memory limit allocations. sctp: remove unnecessary byteshifting, calculate directly in big-endian sctp: Allow only 1 listening socket with SO_REUSEADDR sctp: Do not leak memory on multiple listen() calls sctp: Support ipv6only AF_INET6 sockets. ...
2008-07-20tty: add more tty_port fieldsAlan Cox1-9/+7
Move more bits into the tty_port structure Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20synclink: use tty_portAlan Cox1-104/+97
Switch the synclink ports to use the new tty_port structure Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-20tty: Ldisc revampAlan Cox1-2/+2
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>
2008-07-04WAN: convert drivers to use built-in netdev_statsKrzysztof Halasa1-16/+12
There is no point in using separate net_device_stats structs when the one in struct net_device is present. Compiles. Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-13drivers/char/synclink_gt.c: don't return an uninitialised localAndrew Morton1-1/+1
drivers/char/synclink_gt.c: In function 'put_char': drivers/char/synclink_gt.c:919: warning: 'ret' may be used uninitialized in this function The compiler speaketh truth. Cc: Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30char serial: switch drivers to ioremap_nocacheAlan Cox1-1/+1
Simple search/replace except for synclink.c where I noticed a real bug and fixed it too. It was doing NULL + offset, then checking for NULL if the remap failed. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30synclink series: switch to int put_char methodAlan Cox1-5/+9
Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.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>
2008-04-30tty/serial: lay the foundations for the next set of reworksAlan Cox1-2/+4
- 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>
2008-04-30synclink series: Prepare for BKL pushdownAlan Cox1-19/+39
As these are quite complex I've simply pushed the BKL down into the ioctl handler not tried to do anything neater. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28synclink drivers bool conversionJoe Perches1-51/+51
Remove more TRUE/FALSE defines and uses Remove == TRUE tests Convert BOOLEAN to bool Convert int to bool where appropriate Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-20drivers/char: minor irq handler cleanupsJeff Garzik1-9/+4
- remove always-false tests - don't overload 'irq' argument, pass data properly via dev_id - remove pointless casts from void* Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-02-06synclink_gt fix missed serial input signal changesPaul Fulghum1-31/+37
Fix missed serial input signal changes caused by rereading the serial status register during interrupt processing. Now processing is performed on original status register value. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06synclink: standardize format of linux header file include's with "<>"Robert P. J. Day1-2/+1
Use the recommended form of "<>" to include linux header files, and move those includes up to join the rest of the linux includes. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-14synclink_gt endianness annotationsAl Viro1-4/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-22synclink_gt fix module referencePaul Fulghum1-0/+4
Get module reference on open() by generic HDLC to prevent module from unloading while interface is active. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31synclink_gt: fix transmit DMA stallPaul Fulghum1-29/+46
Fix transmit DMA stall when write() called in window after previous transmit DMA completes but before previous serial transmission completes. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau1-2/+1
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16synclink: remove bogus 'no change' termios optimisation from synclink driversAlan Cox1-8/+0
Again this check is wrong now, and un-needed Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11synclink_gt: add compat_ioctlPaul Fulghum1-0/+107
Add support for 32 bit ioctl on 64 bit systems for synclink_gt Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08synclink_gt use dynamic tty device registrationPaul Fulghum1-16/+18
Change synclink_gt driver to use dynamic tty device registration. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] Char: timers cleanupJiri Slaby1-13/+6
- Use timer macros to set function and data members and to modify expiration time. - Use DEFINE_TIMER for global timers and do not init them at run-time in these cases. - del_timer_sync is common in most cases -- we want to wait for timer function if it's still running. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Kylene Jo Hall <kjhall@us.ibm.com> Cc: Wim Van Sebroeck <wim@iguana.be> Acked-by: Dmitry Torokhov <dtor@mail.ru> (Input bits) Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>