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* dm: move include filesAlasdair G Kergon2008-04-2510-274/+11
| | | | | | Publish the dm-io, dm-log and dm-kcopyd headers in include/linux. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm kcopyd: renameAlasdair G Kergon2008-04-252-0/+0
| | | | | | Rename kcopyd.[ch] to dm-kcopyd.[ch]. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm: expose macrosAlasdair G Kergon2008-04-251-89/+0
| | | | | | Make dm.h macros and inlines available in include/linux/device-mapper.h Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm kcopyd: remove redundant client countingMikulas Patocka2008-04-253-98/+29
| | | | | | | | | | | | Remove client counting code that is no longer needed. Initialization and destruction is made globally from dm_init and dm_exit and is not based on client counts. Initialization allocates only one empty slab cache, so there is no negative impact from performing the initialization always, regardless of whether some client uses kcopyd or not. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm kcopyd: private mempoolMikulas Patocka2008-04-251-13/+19
| | | | | | | | Change the global mempool in kcopyd into a per-device mempool to avoid deadlock possibilities. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm kcopyd: per deviceMikulas Patocka2008-04-251-59/+73
| | | | | | | | Make one kcopyd thread per device. The original shared kcopyd could deadlock. Configuration:
* dm log: make module use tracking internalJonathan Brassow2008-04-252-31/+94
| | | | | | | Remove internal module reference fields from the interface. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm log: move register functionsAlasdair G Kergon2008-04-251-26/+26
| | | | | | Reorder a couple of functions in the file so the next patch is readable. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm log: clean interfaceHeinz Mauelshagen2008-04-254-103/+112
| | | | | | | Clean up the dm-log interface to prepare for publishing it in include/linux. Signed-off-by: Heinz Mauelshagen <hjm@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm kcopyd: clean interfaceHeinz Mauelshagen2008-04-255-58/+62
| | | | | | | Clean up the kcopyd interface to prepare for publishing it in include/linux. Signed-off-by: Heinz Mauelshagen <hjm@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm io: clean interfaceHeinz Mauelshagen2008-04-258-25/+33
| | | | | | | Clean up the dm-io interface to prepare for publishing it in include/linux. Signed-off-by: Heinz Mauelshagen <hjm@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm io: rename error to error_bitsAlasdair G Kergon2008-04-251-7/+7
| | | | | | Rename 'error' to 'error_bits' for clarity. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm snapshot: store pointer to target instanceMikulas Patocka2008-04-252-4/+4
| | | | | | | Save pointer to dm_target in dm_snapshot structure. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm log: move dirty region log code into separate moduleHeinz Mauelshagen2008-04-253-12/+11
| | | | | | | | Move the dirty region log code into a separate module so other targets can share the code. Signed-off-by: Heinz Mauelshagen <hjm@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm log: generalise name in messagesHeinz Mauelshagen2008-04-251-7/+8
| | | | | | | | Change dm-log.c messages from "mirror log" to "dirty region log" as a new dm target wants to share this code. Signed-off-by: Heinz Mauelshagen <hjm@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm raid1: use list_split_initRobert P. J. Day2008-04-251-6/+4
| | | | | | | Use shorter list_splice_init() for brevity. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm snapshot: reduce default memory allocationMilan Broz2008-04-251-2/+2
| | | | | | | | | Limit the amount of memory allocated per snapshot on systems with a large page size. (The larger default chunk size on these systems compensates for the smaller number of pages reserved.) Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
* dm snapshot: fix chunksize sector conversionMikulas Patocka2008-04-251-1/+1
| | | | | | | | | | | If a snapshot has a smaller chunksize than the page size the conversion to pages currently returns 0 instead of 1, causing: kernel BUG in mempool_resize. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: stable@kernel.org
* Merge branch 'for-linus' of ↵Linus Torvalds2008-04-241-18/+17
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-fixes * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-fixes: "make namespacecheck" fixes x86: fix compilation error in VisWS x86: voyager fix x86: Drop duplicate from setup.c intel-iommu.c: dma ops fix
| * intel-iommu.c: dma ops fixIngo Molnar2008-04-241-18/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stephen Rothwell noticed that: Commit 2be621498d461b63ca6124f86e3b9582e1a8e722 ("x86: dma-ops on highmem fix") in Linus' tree introduced a new warning (noticed in the x86_64 allmodconfig build of linux-next): drivers/pci/intel-iommu.c:2240: warning: initialization from incompatible pointer type Which points at an instance of map_single that needs updating. Fix it to the new prototype. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvbLinus Torvalds2008-04-24408-7330/+24793
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (452 commits) V4L/DVB (7731): tuner-xc2028: fix signal strength calculus V4L/DVB (7730): tuner-xc2028: Fix SCODE load for MTS firmwares V4L/DVB (7729): Fix VIDIOCGAP corruption in ivtv V4L/DVB (7728): tea5761: bugzilla #10462: tea5761 autodetection code were broken V4L/DVB (7726): cx23885: Enable cx23417 support on the HVR1800 V4L/DVB (7725): cx23885: Add generic cx23417 hardware encoder support V4L/DVB (7723): pvrusb2: Clean up input selection list generation in V4L interface V4L/DVB (7722): pvrusb2: Implement FM radio support for Gotview USB2.0 DVD 2 V4L/DVB (7721): pvrusb2: Restructure cx23416 firmware loading to have a common exit point V4L/DVB (7720): pvrusb2: Fix bad error code on cx23416 firmware load failure V4L/DVB (7719): pvrusb2: Implement input selection enforcement V4L/DVB (7718): pvrusb2-dvb: update Kbuild selections V4L/DVB (7717): pvrusb2-dvb: add DVB-T support for Hauppauge pvrusb2 model 73xxx V4L/DVB (7716): pvrusb2: clean up global functions V4L/DVB (7715): pvrusb2: Clean out all use of __FUNCTION__ V4L/DVB (7714): pvrusb2: Fix hang on module removal V4L/DVB (7713): pvrusb2: Implement cleaner DVB kernel thread shutdown V4L/DVB (7712): pvrusb2: Close connect/disconnect race V4L/DVB (7711): pvrusb2: Fix race on module unload V4L/DVB (7710): pvrusb2: Implement critical digital streaming quirk for onair devices ...
| * | V4L/DVB (7731): tuner-xc2028: fix signal strength calculusMauro Carvalho Chehab2008-04-241-3/+10
| | | | | | | | | | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7730): tuner-xc2028: Fix SCODE load for MTS firmwaresMauro Carvalho Chehab2008-04-241-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are different tables for MTS firmwares. This should be taken into account while selecting the proper firmware. While at tuner-xc2028.h, improve some comments. Thanks to Edward J. Sheldrake <ejs1920@yahoo.co.uk> for helping to diagnose such troubles with PAL/I standard. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7729): Fix VIDIOCGAP corruption in ivtvAlan Cox2008-04-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Frank Bennett reported that ivtv was causing skype to crash. With help from one of their developers he showed it was a kernel problem. VIDIOCGCAP copies a name into a fixed length buffer - ivtv uses names that are too long and does not truncate them so corrupts a few bytes of the app data area. Possibly the names also want trimming but for now this should fix the corruption case. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7728): tea5761: bugzilla #10462: tea5761 autodetection code were brokenMauro Carvalho Chehab2008-04-242-8/+13
| | | | | | | | | | | | Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7726): cx23885: Enable cx23417 support on the HVR1800Steven Toth2008-04-244-2/+89
| | | | | | | | | | | | | | | | | | | | | | | | cx23885: Enable cx23417 support on the HVR1800 Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7725): cx23885: Add generic cx23417 hardware encoder supportSteven Toth2008-04-244-31/+1921
| | | | | | | | | | | | | | | | | | | | | | | | cx23885: Add generic cx23417 hardware encoder support. Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7723): pvrusb2: Clean up input selection list generation in V4L ↵Mike Isely2008-04-241-32/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | interface Change how list of possible pvrusb2 inputs is generated to include only those interfaces that make sense for the interface instance. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7722): pvrusb2: Implement FM radio support for Gotview USB2.0 DVD 2Mike Isely2008-04-243-1/+31
| | | | | | | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7721): pvrusb2: Restructure cx23416 firmware loading to have a ↵Mike Isely2008-04-241-4/+8
| | | | | | | | | | | | | | | | | | | | | common exit point Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7720): pvrusb2: Fix bad error code on cx23416 firmware load failureMike Isely2008-04-241-1/+1
| | | | | | | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7719): pvrusb2: Implement input selection enforcementMike Isely2008-04-247-74/+246
| | | | | | | | | | | | | | | | | | In the pvrusb2 driver, different interfaces (e.g. V4L, DVB) have Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7718): pvrusb2-dvb: update Kbuild selectionsMichael Krufky2008-04-241-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | These changes are required with the addition of digital television support for the Hauppauge HVR1900 & HVR1950, the OnAir Creator and Sasem USB HDTV Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7717): pvrusb2-dvb: add DVB-T support for Hauppauge pvrusb2 model 73xxxMichael Krufky2008-04-241-4/+48
| | | | | | | | | | | | | | | Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7716): pvrusb2: clean up global functionsAdrian Bunk2008-04-242-50/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains the following cleanups: - make the following needlessly global function static: - pvr2_hdw_set_cur_freq() - #if 0 the following unused global functions: - pvr2_hdw_get_state_name() - pvr2_hdw_get_debug_info_unlocked() - pvr2_hdw_get_debug_info_locked() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7715): pvrusb2: Clean out all use of __FUNCTION__Mike Isely2008-04-241-20/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Apparently the kernel developers no longer consider it proper etiquette to use __FUNCTION__; everyone must instead use __func__ (even though it breaks with older compilers). And worse still, actual effort is being expended to sweep this change throughout the kernel source tree. Don't these people have better things to do? So... Completely clean out all use of __FUNCTION__ from the pvrusb2 driver (it was just in the sysfs interface). I'm not going to use __func__ either. So there. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7714): pvrusb2: Fix hang on module removalMike Isely2008-04-241-1/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pvrusb2 driver was getting had by this scenario: 1. Task A calls kthread_stop() for task B. 2. Before exiting, then Task B calls kthread_stop() for task C. The problem is, kthread_stop() wants to allocate an internal resource to itself (i.e. acquire a lock), which won't be released until kthread_stop() returns. But kthread_stop() won't return until task B is dead. But task B won't die until it finishes its call to kthread_stop() for task C, and that will block waiting on the resource already allocated inside task A. Deadlock. With the pvrusb2 driver, task A is the caller to pvr_exit(), task B is the control thread run inside of pvrusb2-context.c, and task C is any worker thread run inside of pvrusb2-hdw.c. This problem got introduced by the previous threading setup change, which was itself an attempt to fix a module tear-down race (which it actually did fix). The lesson here is that a task being waited on as part of a kthread_stop() simply cannot be allow to also issue a kthread_stop() - or we make sure not to issue the enclosing kthread_stop() until we know that the inner kthread_stop() has completed first. The solution for the pvrusb2 driver is some hackish code which changes the main control thread tear down into a two step process. This then makes it possible to delay issuing the kthread_stop() on the control thread until after we know that everything has been torn down first. (And yes, we really need that kthread_stop() because it's the only way to safely guarantee that a module-referencing kernel thread has safely returned back out of the module before we finally remove the module.) Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7713): pvrusb2: Implement cleaner DVB kernel thread shutdownMike Isely2008-04-242-6/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Earlier fix to handle DVB feed thread aborts was overly-aggressive. We can take better advantage of what kthread_stop() can do. This change simplifies things. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7712): pvrusb2: Close connect/disconnect raceMike Isely2008-04-241-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a disconnect happens before initialization is completed, the pvrusb2 driver can accidentally touch dangling pointers. The whole initialization function must be protected by the big_lock, and once inside that lock, the initialization function should abort if it is discovered that a disconnect has already taken place. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7711): pvrusb2: Fix race on module unloadMike Isely2008-04-243-51/+174
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pvrusb2 driver - for basically forever - was not enforcing a proper module tear-down. Kernel threads are used inside the driver and all must be gone before the module can be safely removed. This changeset reimplements a chunk of pvrusb2-context.c to enforce this correctly. Unfortunately this is not a simple fix. The new implementation also cuts back on kernel thread usage; instead of there being 1 control thread per instance now it's just 1 control thread shared by all instances. (By dropping to a single thread then the module exit function can block on its shutdown and the thread itself can monitor and cleanly shut down all of the other instances first.) Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7710): pvrusb2: Implement critical digital streaming quirk for ↵Mike Isely2008-04-243-7/+156
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | onair devices Implement timed measurement of encoder operation for the first time it is run. This allows the driver to note when the encoder has been run successfully for at least 1/4 second. On top of that implement various bits to ensure that the encoder has been run once before digital streaming for OnAir devices. This is done via several core state machine tweaks. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7709): pvrusb2: New device attribute for encoder usage in digital modeMike Isely2008-04-243-9/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | Some tuners seem to not work in digital mode unless the encoder is healthy. Implement a device attribute to represent this flag and modify the core state machines to enforce this requirement. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7708): pvrusb2-dvb: Fix stuck thread on streaming abortMike Isely2008-04-242-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the device fails to stream, the feed thread will block forever waiting for buffers. But while in this state it was not looking for an exit condition from the driver DVB interface. This caused the thread to jam. Implement a new stop flag (which will be set appropriately) to tell the thread to stop. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7707): pvrusb2-dvb: add atsc/qam support for Hauppauge pvrusb2 ↵Michael Krufky2008-04-241-0/+60
| | | | | | | | | | | | | | | | | | | | | | | | model 750xx Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7706): pvrusb2: create a separate pvr2_device_desc structure for ↵Michael Krufky2008-04-241-5/+23
| | | | | | | | | | | | | | | | | | | | | 751xx models Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7705): pvrusb2: Enable OnAir digital operationMichael Krufky2008-04-241-1/+74
| | | | | | | | | | | | | | | | | | Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7704): pvrusb2: Fix slop involving use of struct which might not be ↵Mike Isely2008-04-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | defined When the DVB interface is not compiled, the pvr2_dvb_props struct is not available - so it really should be ifdef'ed out as well. This didn't cause an error because in this context its usage was as an opaque pointer. But it really shouldn't be present at all if DVB is not enabled. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7703): pvrusb2: Fix minor problem involving ARRAY_SIZE confusionMike Isely2008-04-241-2/+2
| | | | | | | | | | | | | | | Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7702): pvrusb2: Rework USB streaming start/stop executionMike Isely2008-04-241-15/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commands to start / stop USB streaming for an analog device are fairly standard, owing to the fact that all supported devices apparently started from the same common reference design. However with digital mode, the commands seem to vary by vendor. This change makes that variance more explicit. It also cleans up a related problem for OnAir devices which prevented digital mode from working at all. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| * | V4L/DVB (7701): pvrusb2: Centralize handling of simple FX2 commandsMike Isely2008-04-241-82/+116
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Numerous places in the driver need to issue simple commands to the FX2 microcontroller (e.g. only 1 or 2 bytes, no reply needed). Previously each place that did this, had to take lock, set up a central buffer, and call the function to perform the handshake. This change puts these steps into a single spot. This also has the effect of removing the need to mess with the control lock from numerous places in the code. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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