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path: root/drivers/sbus/char
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2009-05-11block: implement and enforce request peek/start/fetchTejun Heo
Till now block layer allowed two separate modes of request execution. A request is always acquired from the request queue via elv_next_request(). After that, drivers are free to either dequeue it or process it without dequeueing. Dequeue allows elv_next_request() to return the next request so that multiple requests can be in flight. Executing requests without dequeueing has its merits mostly in allowing drivers for simpler devices which can't do sg to deal with segments only without considering request boundary. However, the benefit this brings is dubious and declining while the cost of the API ambiguity is increasing. Segment based drivers are usually for very old or limited devices and as converting to dequeueing model isn't difficult, it doesn't justify the API overhead it puts on block layer and its more modern users. Previous patches converted all block low level drivers to dequeueing model. This patch completes the API transition by... * renaming elv_next_request() to blk_peek_request() * renaming blkdev_dequeue_request() to blk_start_request() * adding blk_fetch_request() which is combination of peek and start * disallowing completion of queued (not started) requests * applying new API to all LLDs Renamings are for consistency and to break out of tree code so that it's apparent that out of tree drivers need updating. [ Impact: block request issue API cleanup, no functional change ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Mike Miller <mike.miller@hp.com> Cc: unsik Kim <donari75@gmail.com> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: David S. Miller <davem@davemloft.net> Cc: Laurent Vivier <Laurent@lvivier.info> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Adrian McMenamin <adrian@mcmen.demon.co.uk> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: Pierre Ossman <drzeus@drzeus.cx> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: Stefan Weinhuber <wein@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11jsflash: dequeue in-flight requestTejun Heo
jsflash processes requests one-by-one synchronously from a kthread and can be easily converted to dequeueing model. Convert it. [ Impact: dequeue in-flight request ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11block: blk_rq_[cur_]_{sectors|bytes}() usage cleanupTejun Heo
With the previous changes, the followings are now guaranteed for all requests in any valid state. * blk_rq_sectors() == blk_rq_bytes() >> 9 * blk_rq_cur_sectors() == blk_rq_cur_bytes() >> 9 Clean up accessor usages. Notable changes are * nbd,i2o_block: end_all used instead of explicit byte count * scsi_lib: unnecessary conditional on request type removed [ Impact: cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-11block: convert to pos and nr_sectors accessorsTejun Heo
With recent cleanups, there is no place where low level driver directly manipulates request fields. This means that the 'hard' request fields always equal the !hard fields. Convert all rq->sectors, nr_sectors and current_nr_sectors references to accessors. While at it, drop superflous blk_rq_pos() < 0 test in swim.c. [ Impact: use pos and nr_sectors accessors ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Tested-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Adrian McMenamin <adrian@mcmen.demon.co.uk> Acked-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Borislav Petkov <petkovbb@googlemail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Eric Moore <Eric.Moore@lsi.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Tim Waugh <tim@cyberelk.net> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Alex Dubov <oakad@yahoo.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Dario Ballabio <ballabio_dario@emc.com> Cc: David S. Miller <davem@davemloft.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: unsik Kim <donari75@gmail.com> Cc: Laurent Vivier <Laurent@lvivier.info> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-04-28block: replace end_request() with [__]blk_end_request_cur()Tejun Heo
end_request() has been kept around for backward compatibility; however, it's about time for it to go away. * There aren't too many users left. * Its use of @updtodate is pretty confusing. * In some cases, newer code ends up using mixture of end_request() and [__]blk_end_request[_all](), which is way too confusing. So, add [__]blk_end_request_cur() and replace end_request() with it. Most conversions are straightforward. Noteworthy ones are... * paride/pcd: next_request() updated to take 0/-errno instead of 1/0. * paride/pf: pf_end_request() and next_request() updated to take 0/-errno instead of 1/0. * xd: xd_readwrite() updated to return 0/-errno instead of 1/0. * mtd/mtd_blkdevs: blktrans_discard_request() updated to return 0/-errno instead of 1/0. Unnecessary local variable res initialization removed from mtd_blktrans_thread(). [ Impact: cleanup ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Joerg Dorchain <joerg@dorchain.net> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Laurent Vivier <Laurent@lvivier.info> Cc: Tim Waugh <tim@cyberelk.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: unsik Kim <donari75@gmail.com>
2009-04-14sbus: changed ioctls to unlockedStoyan Gaydarov
Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13sbus: Auto-load openprom module when device opened.Scott James Remnant
The openprom module is missing the char-major-10-139 alias that would cause it to be auto-loaded when a device of that type is opened. This patch adds the alias. Signed-off-by: Scott James Remnant <scott@canonical.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sparc64: wait_event_interruptible_timeout may return -ERESTARTSYSRoel Kluin
wait_event_interruptible_timeout may return -ERESTARTSYS. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04jsflash: stop defining MAJOR_NRChristoph Hellwig
Ever since early 2.5 kernels block drivers don't need to define MAJOR_NR anymore, so use the JSFD_MAJOR defined directly and kill it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-06sparc64: Fix unsigned long long warnings in drivers.Sam Ravnborg
Fix warnings caused by the unsigned long long usage in sparc specific drivers. The drivers were considered sparc specific more or less from the filename alone. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-01Revert "of_platform_driver noise on sparce"Linus Torvalds
This reverts commit e669dae6141ff97d3c7566207f5de3b487dcf837, since it is incomplete, and clashes with fuller patches and the sparc 32/64 unification effort. Requested-by: David Miller <davem@davemloft.net> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-30of_platform_driver noise on sparceAl Viro
switch to __init for those; unlike powerpc sparc has no hotplug support for that stuff and their ->probe() tends to call __init functions while being declared __devinit. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-04drivers: remove duplicated #includeJianjun Kong
Signed-off-by: Jianjun Kong <jianjun@zeuux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-09-03sparc: Kill sbus mostek RTC driver.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31sparc: Annotate of_device_id arrays with const or __initdata.David S. Miller
As suggested by Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29bbc_envctrl: Fix build errors from bbc_i2c OF conversion.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29bbc_i2c: Convert to pure OF driver.David S. Miller
This thing was a mess, who wrote this junk? :) Luckily we'll soon have nice generic I2C layer drivers for this PCF based I2C stuff on sparc64. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29envctrl: Convert to pure OF driver.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29display7seg: Convert to pure OF device driver.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29cpwatchdog: Move to drivers/watchdog/cpwd.cDavid S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29cpwatchdog: Cleanup and convert to pure OF driver.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29riowatchdog: Move under drivers/watchdogDavid S. Miller
The config stuff was already in drivers/watchdog/Kconfig Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29riowatchdog: Convert to pure OF driver.David S. Miller
This also cleans up a lot of crud in this driver: 1) Don't touch the BBC regs, just leave the watchdog trigger behavior whatever the firmware programmed it to. 2) Use WATCHDOG_MINOR instead of hardcoded and not properly allocated RIOWD_MINOR. Hey, I haven't touched it since I wrote it years ago :-) Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Convert uctrl driver to OF driver.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Convert flash driver to OF device probing.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill videopix SBUS driver.David S. Miller
This has been marked BROKEN for a long time and it's more likely to get rewritten from scratch than to be fixed up and made usable. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Delete bare sbus char bpp driver, obsoleted by parport_sunbppDavid S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-17drivers/sbus/: cleanupsAdrian Bunk
This patch contains the following cleanups: - make the following needlessly global code static: - char/uctrl.c: uctrl_get_event_status() - char/uctrl.c: uctrl_get_external_status() - char/vfc_dev.c: struct vfc_dev_lst - char/vfc_dev.c: vfc_lock_device() - char/vfc_dev.c: vfc_unlock_device() - char/vfc_dev.c: vfc_captstat_reset() - char/vfc_dev.c: vfc_memptr_reset() - char/vfc_dev.c: vfc_csr_init() - char/vfc_dev.c: vfc_saa9051_init() - char/vfc_dev.c: init_vfc_hw() - char/vfc_dev.c: init_vfc_devstruct() - char/vfc_dev.c: init_vfc_device() - char/vfc_dev.c: vfc_get_dev_ptr() - char/vfc_dev.c: vfc_capture_start() - char/vfc_dev.c: vfc_capture_poll() - char/vfc_dev.c: vfc_port_change_ioctl() - char/vfc_dev.c: vfc_set_video_ioctl() - char/vfc_dev.c: vfc_get_video_ioctl() - char/vfc_i2c.c: vfc_i2c_wait_for_bus() - char/vfc_i2c.c: vfc_i2c_wait_for_pin() - char/vfc_i2c.c: vfc_i2c_xmit_addr() - char/vfc_i2c.c: vfc_i2c_xmit_byte() - char/vfc_i2c.c: vfc_i2c_recv_byte() - dvma.c: init_one_dvma() - remove an unused variable from a function: - char/uctrl.c: ts102_uctrl_init() - remove the following unused and empty function: - char/uctrl.c: uctrl_set_video() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14Merge commit 'v2.6.26' into bkl-removalJonathan Corbet
2008-07-02uctrl: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02sbus-rtc: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02riowatchdog: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-07-02openprom: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20jsflash: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20flash: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20envctrl: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20display7seg: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20cpwatchdog: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-20videopix: BKL pushdownJonathan Corbet
Add explicit lock_kernel() calls to vfc_open(). Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20bpp: bkl pushdownJonathan Corbet
Put explicit lock_kernel() calls into bpp_open(). It has locking, but I'm not convinced it won't race with ioctl(). Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-05-21sbus bpp: instances missed in s/dev_name/bpp_dev_name/Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-05sbus: Fix bpp driver build.David S. Miller
Using the variable name 'dev_name' in the top-level namespace is a bad idea. This conflicts with linux/device.h's inline function of the same name. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-30drivers: replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-19[WATCHDOG] Sbus: cpwatchdog, remove SPIN_LOCK_UNLOCKEDJiri Slaby
cpwatchdog, remove SPIN_LOCK_UNLOCKED SPIN_LOCK_UNLOCKED is deprecated, use __SPIN_LOCK_UNLOCKED with an unique name instead Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-10-20vfc_dev conversion to mutex: falloutAl Viro
Commit 7b96dc023a1b487bce59256fde14b8bb28b45aea ("[SPARC] Videopix Frame Grabber: Convert device_lock_sem to mutex") missed one place. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17[SPARC] Videopix Frame Grabber: Convert device_lock_sem to mutexMatthias Kaehlcke
Videopix Frame Grabber: Convert the semaphore device_lock_sem to the mutex API Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31[BBC_I2C]: kmalloc + memset conversion to kzallocMariusz Kozlowski
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31[BBC_ENVCTRL]: kmalloc + memset conversion to kzallocMariusz Kozlowski
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31[SPARC] Videopix Frame Grabber: Fix unreleased lock in vfc_debug()Matthias Kaehlcke
Videopix Frame Grabber: vfc_debug() doesn't release the device lock when copy_from_user() fails Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-24Merge branch 'master' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Mark most of initial bootup asm as .text.init.ref_ok [SPARC32]: Fix bug in sparc optimized memset. [SPARC64]: Update defconfig. [SPARC]: Add missing NOTES section. [SPARC32]: missing exports [SPARC32]: Deal with rtc/sun_mostek_rtc conflict.
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