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* [S390] Avoid excessive inlining.Heiko Carstens2007-02-05
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Convert memory detection into C code.Heiko Carstens2007-02-05
| | | | | | | | | | | | | | Hopefully this will make it more maintainable and less error prone. Code makes use of search_exception_tables(). Since it calls this function before the kernel exeception table is sorted, there is an early call to sort_main_extable(). This way it's easy to use the already present infrastructure of fixup sections. Also this would allows to easily convert the rest of head[31|64].S into C code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Calibrate delay and bogomips.Martin Schwidefsky2007-02-05
| | | | | | | | | Preset the bogomips number to the cpu capacity value reported by store system information in SYSIB 1.2.2. This value is constant for a particular machine model and can be used to determine relative performance differences between machines. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Add crypto support for 3592 tape devicesMichael Holzheu2007-02-05
| | | | | | | | | | | | 3592 tape devices are able to write data encrpyted on tape mediums. This z/Linux device driver support includes the following functions: * ioctl to switch on/off encryption * ioctl to query encryption status of drive * ioctls to set and query key encrypting keys (kekls) * long busy interrupt handling Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] ETR support.Martin Schwidefsky2007-02-05
| | | | | | | | | | | | | This patch adds support for clock synchronization to an external time reference (ETR). The external time reference sends an oscillator signal and a synchronization signal every 2^20 microseconds to keep the TOD clocks of all connected servers in sync. For availability two ETR units can be connected to a machine. If the clock deviates for more than the sync-check tolerance all cpus get a machine check that indicates that the clock is out of sync. For the lovely details how to get the clock back in sync see the code below. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Don't spam debug feature.Cornelia Huck2007-02-05
| | | | | | | | Lower priority of "Blacklisted device detected" messages so we don't overwrite more useful messages. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Cleanup of CHSC event handling.Peter Oberparleiter2007-02-05
| | | | | | | Change CHSC event handling to be more easily extensible. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: declare hardware structures packed.Peter Oberparleiter2007-02-05
| | | | | Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Catch operand exceptions on stsch.Cornelia Huck2007-02-05
| | | | | | | | | | If we have a subchannel id which has been generated via for_each_subchannel(), it might contain an invalid subchannel set id. We need to catch the ensuing operand exception by using stsch_err() instead of stsch() in all possible cases. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd: fix unconditional reserve handling.Horst Hummel2007-02-05
| | | | | | | | | | The reserve/release IOCTLs sometimes do not work. If second system does a 'steal lock' the pending unit check (Format 3 Msg F) is delivered. Since ERP is disabled for reserve/release, the IOCTL call fails. We have to allow basic ERP (retries) for reserve/release IOCTLs. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Remove dasd_ccw_log function.Horst Hummel2007-02-05
| | | | | | | | Logging of relevant information is already done by disciplines dump_sense function. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Small barrier() and cpu_relax() cleanup.Heiko Carstens2007-02-05
| | | | | | | | | cpu_relax() has barrier() semantics hence there is no need to use both of them in conjunction in sclp_sync_wait(). Also change cpu_relax() so it's more obvious that it has barrier semantics. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Use device_{create,remove}_bin_file.Cornelia Huck2007-02-05
| | | | | | | | Create/remove the channel measurement binary files with device_{create,remove}_bin_file instead of sysfs_{create,remove}_bin_file. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] sclp: don't call local_bh_disable/_local_bh_enable if in_interrupt()Heiko Carstens2007-02-05
| | | | | | | | | local_bh_disable/_local_bh_enable must not be called if in_irq() is true. Besides that if in_interrupt() is true bottom halves are disabled anyway. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Show loaded DCSS segments under /proc/iomem.Gerald Schaefer2007-02-05
| | | | | | | | Currently loaded DCSS segments are now listed in /proc/iomem with their name followed by a trailing "(DCSS)". Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Restart path verification after unsolicited interrupt.Cornelia Huck2007-02-05
| | | | | | | | | | If we try to start path verification when an unsolicited interrupt is already pending, stctl shows status pending and we delay path verification again. We need to check for the doverify bit when the unsolicited interrupt comes in and then do path verification. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] dasd: fix bug in dasd initialization cleanupStefan Weinhuber2007-02-05
| | | | | | | | | | | | | | | | The initialization of the dasd_eer code is one of the last steps of the dasd driver initialization. When initialization fails in one of the earlier steps, the dasd_exit function is called to clean up what has been done so far. So the dasd_eer_exit function may be called, although the dasd_eer_init function wasn't called before and dasd_eer_exit tries to unregister a misc device that wasn't registered, which results in a BUG. Make sure that dasd_eer_exit can be called without initialization. Use a dynamically allocated struct miscdevice instead of a static one, so we only try to unregister the device if it exists and was actually registered. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] sclp: invalid handling of temporary 'not operational' statusPeter Oberparleiter2007-02-05
| | | | | | | | | | | Requests are aborted when the sclp interface reports 'not operational' even though they may still be active at the sclp, leading to concurrent writes to request memory by both the kernel and the sclp interface. Do not abort requests for which the sclp interface reports not operational status during request retry. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>5A Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Remove check for ssd in chpids_show().Cornelia Huck2007-02-05
| | | | | | | | Since ssd_info is now available before the subchannel is registered, we don't need to check whether it is available. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Check the return value of kthread_run().Akinobu Mita2007-02-05
| | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Get rid of a lot of sparse warnings.Heiko Carstens2007-02-05
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2007-01-09
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: pcnet_cs : add new id chelsio: error path fix s390: iucv Kconfig help description changes s390: qeth driver fixes: atomic context fixups s390: qeth driver fixes: packet socket s390: qeth driver fixes: VLAN hdr, perf stats forcedeth: sideband management fix Revert "[PATCH] e1000: disable TSO on the 82544 with slab debugging" qeth: fix uaccess handling and get rid of unused variable qla3xxx: Add delay to NVRAM register access. qla3xxx: Remove NETIF_F_LLTX from driver features. ixgb: Write RA register high word first, increment version ixgb: Maybe stop TX if not enough free descriptors ixgb: Fix early TSO completion [PATCH] ipw2100: Fix dropping fragmented small packet problem [PATCH] ieee80211: WLAN_GET_SEQ_SEQ fix (select correct region)
| * s390: iucv Kconfig help description changesFrank Pavlic2007-01-09
| | | | | | | | | | | | | | | | | | | | | | [PATCH 4/5] s390: iucv Kconfig help description changes From: Ursula Braun <braunu@de.ibm.com> remove text from help description which does not apply anymore for 2.6 kernel series. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * s390: qeth driver fixes: atomic context fixupsFrank Blaschka2007-01-09
| | | | | | | | | | | | | | | | | | | | - qeth device functions were not callable in atomic context due to usage of wait_event_xxx operations in qeth. "schedule while atomic" message appeared and kernel dumped when removing slave from bond device. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * s390: qeth driver fixes: packet socketFrank Blaschka2007-01-09
| | | | | | | | | | | | | | | | | | | | | | - packet socket support is not complete. Recvfrom a packet socket does not fill the sockaddr_ll structure. device function hard_header_parse is not implemented. For layer 2 mode and layer 3 mode with fake_ll turned on, we have the information to fill sockaddr_ll. Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * s390: qeth driver fixes: VLAN hdr, perf statsFrank Blaschka2007-01-09
| | | | | | | | | | | | | | | | | | | | | | From: Ursula Braun <braunu@de.ibm.com> - VLAN header reordering did not work on packets received through qeth interface in layer 2 mode. This caused dhcpcd not to work with VLAN devices. - set qeth performance statistics initally inactive Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * qeth: fix uaccess handling and get rid of unused variableHeiko Carstens2007-01-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [patch] qeth: fix uaccess handling and get rid of unused variable drivers/s390/net/qeth_main.c: In function `qeth_process_inbound_buffer': drivers/s390/net/qeth_main.c:2563: warning: unused variable `vlan_addr' include/asm/uaccess.h: In function `qeth_do_ioctl': drivers/s390/net/qeth_main.c:4847: warning: ignoring return value of `copy_to_user' drivers/s390/net/qeth_main.c:4849: warning: ignoring return value of `copy_to_user' drivers/s390/net/qeth_main.c:4996: warning: ignoring return value of `copy_to_user' Cc: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [S390] locking problem with __cpcmd.Christian Borntraeger2007-01-09
| | | | | | | | | | | | | | | | | | Changeset 740b5706b9c4b3767f597b3ea76654c6f2a800b2 moved the protecting spinlock from __cpcmd to cpcmd. Therefore vmcp can no longer use __cpcmd, instead we have to use cpcmd. Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | [S390] cio: use barrier() in stsch_reset.Heiko Carstens2007-01-09
|/ | | | | | | | | | | | | Use barrier() in stsch_reset() instead of duplicating the stsch() inline assembly and adding "memory" to the clobberlist. Pointed out by Chuck Ebbert. Real fix would be to add a fixup section to the stsch() and extend the basic program check handler so it searches the exception tables in case of a program check. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: fix stsch_reset.Michael Holzheu2006-12-27
| | | | | | | | | Copy inline assembly of stsch and add "memory" to clobber list in order to prevent gcc from optimizing away the checking of the global variable "pgm_check_occured". Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Change max. buffer size for monwriter device.Melissa Howland2006-12-27
| | | | | | | | Reduce the max. buffer size for the monwriter device to prevent a possible problem with the z/VM monitor service. Signed-off-by: Melissa Howland <melissah@us.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: css_register_subchannel race.Stefan Bader2006-12-15
| | | | | | | | | Asynchronous probe can release memory of a subchannel before css_get_ssd_info is called. To fix this call css_get_ssd_info before registering with driver core. Signed-off-by: Stefan Bader <shbader@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Fix reboot hang on LPARsMichael Holzheu2006-12-15
| | | | | | | | | | | | | | Reboot hangs on LPARs without diag308 support. The reason for this is, that before the reboot is done, the channel subsystem is shut down. During the reset on each possible subchannel a "store subchannel" is done. This operation can end in a program check interruption, if the specified subchannel set is not implemented by the hardware. During the reset, currently we do not have a program check handler, which leads to the described kernel bug. We install now a new program check handler for the reboot code to fix this problem. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] sclp_cpi module license.Christian Borntraeger2006-12-15
| | | | | | | sclp_cpi is GPL. Make the module not taint the kernel Signed-off-by: Christian Borntraeger <cborntra@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zcrypt: module unload fixes.Ralph Wuerthner2006-12-15
| | | | | | | | Add code to reset all queues for a domain and add missing tasklet_kill call to ap bus module exit code. Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Hipersocket multicast queue: make sure outbound handler is calledUrsula Braun2006-12-15
| | | | | | | | | | A HiperSocket multicast queue works asynchronously. When sending buffers, the buffer state change from PRIMED to EMPTY may happen delayed. Reschedule the checking for changes in the outbound queue, if there are still PRIMED buffers. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [PATCH] getting rid of all casts of k[cmz]alloc() callsRobert P. J. Day2006-12-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Run this: #!/bin/sh for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do echo "De-casting $f..." perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f done And then go through and reinstate those cases where code is casting pointers to non-pointers. And then drop a few hunks which conflicted with outstanding work. Cc: Russell King <rmk@arm.linux.org.uk>, Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Greg KH <greg@kroah.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Karsten Keil <kkeil@suse.de> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Ian Kent <raven@themaw.net> Cc: Steven French <sfrench@us.ibm.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Jaroslav Kysela <perex@suse.cz> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2006-12-08
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Poison init section before freeing it. [S390] Use add_active_range() and free_area_init_nodes(). [S390] Virtual memmap for s390. [S390] Update documentation for dynamic subchannel mapping. [S390] Use dev->groups for adding/removing the subchannel attribute group. [S390] Support for disconnected devices reappearing on another subchannel. [S390] subchannel lock conversion. [S390] Some preparations for the dynamic subchannel mapping patch. [S390] runtime switch for qdio performance statistics [S390] New DASD feature for ERP related logging [S390] add reset call handler to the ap bus. [S390] more workqueue fixes. [S390] workqueue fixes. [S390] uaccess_pt: add missing down_read() and convert to is_init().
| * [S390] Use dev->groups for adding/removing the subchannel attribute group.Cornelia Huck2006-12-08
| | | | | | | | | | | | | | Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] Support for disconnected devices reappearing on another subchannel.Cornelia Huck2006-12-08
| | | | | | | | | | | | | | | | | | | | | | - create a 'pseudo_subchannel' per channel subsystem (the 'orphanage') - use the orphanage as a shelter for ccw_devices that can't remain on the same subchannel Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] subchannel lock conversion.Cornelia Huck2006-12-08
| | | | | | | | | | | | | | | | | | | | Convert the subchannel lock to a pointer to a lock. Needed for the dynamic subchannel mapping patch. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] Some preparations for the dynamic subchannel mapping patch.Cornelia Huck2006-12-08
| | | | | | | | | | | | | | | | | | | | | | - Move adding subchannel attributes to css_register_subchannel(). - Don't call device_trigger_reprobe() for non-operational devices. - Introduce io_subchannel_create_ccwdev(). Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] runtime switch for qdio performance statisticsUrsula Braun2006-12-08
| | | | | | | | | | | | | | | | Remove CONFIG_QETH_PERF_STATS and use a sysfs attribute instead. We want to have the ability to turn the statistics on/off at runtime. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] New DASD feature for ERP related loggingHorst Hummel2006-12-08
| | | | | | | | | | | | | | | | | | It is now possible to enable/disable ERP related logging without re-compile and re-ipl. A additional sysfs-attribute 'erplog' allows to switch the logging non-interruptive. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] add reset call handler to the ap bus.Ralph Wuerthner2006-12-08
| | | | | | | | | | Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] more workqueue fixes.Martin Schwidefsky2006-12-08
| | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * [S390] workqueue fixes.Andrew Morton2006-12-08
| | | | | | | | | | | | | | Cc: David Howells <dhowells@redhat.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | [PATCH] tty: switch to ktermiosAlan Cox2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the grungy swap all the occurrences in the right places patch that goes with the updates. At this point we have the same functionality as before (except that sgttyb() returns speeds not zero) and are ready to begin turning new stuff on providing nobody reports lots of bugs If you are a tty driver author converting an out of tree driver the only impact should be termios->ktermios name changes for the speed/property setting functions from your upper layers. If you are implementing your own TCGETS function before then your driver was broken already and its about to get a whole lot more painful for you so please fix it 8) Also fill in c_ispeed/ospeed on init for most devices, although the current code will do this for you anyway but I'd like eventually to lose that extra paranoia [akpm@osdl.org: bluetooth fix] [mp3@de.ibm.com: sclp fix] [mp3@de.ibm.com: warning fix for tty3270] [hugh@veritas.com: fix tty_ioctl powerpc build] [jdike@addtoit.com: uml: fix ->set_termios declaration] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Acked-by: Peter Oberparleiter <oberpar@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] struct path: convert s390-driversJosef Sipek2006-12-08
| | | | | | | | | | | | Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] tty: ->signal->tty lockingPeter Zijlstra2006-12-08
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the locking of signal->tty. Use ->sighand->siglock to protect ->signal->tty; this lock is already used by most other members of ->signal/->sighand. And unless we are 'current' or the tasklist_lock is held we need ->siglock to access ->signal anyway. (NOTE: sys_unshare() is broken wrt ->sighand locking rules) Note that tty_mutex is held over tty destruction, so while holding tty_mutex any tty pointer remains valid. Otherwise the lifetime of ttys are governed by their open file handles. This leaves some holes for tty access from signal->tty (or any other non file related tty access). It solves the tty SLAB scribbles we were seeing. (NOTE: the change from group_send_sig_info to __group_send_sig_info needs to be examined by someone familiar with the security framework, I think it is safe given the SEND_SIG_PRIV from other __group_send_sig_info invocations) [schwidefsky@de.ibm.com: 3270 fix] [akpm@osdl.org: various post-viro fixes] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Alan Cox <alan@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Roland McGrath <roland@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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