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* rtc-s3c: Use is_power_of_2() macro for simplicity.Robert P. J. Day2008-02-06
| | | | | | | | | | Use is_power_of_2() macro for simplicity. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-pcf8583: Don't abuse I2C_M_NOSTARTJean Delvare2008-02-06
| | | | | | | | | | | | The rtc-pcf8583 driver is using the I2C_M_NOSTART flag but shouldn't. This flag is only meant for broken chips and the PCF8583 RTC chip is not one of these. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Cosmetic fixes to RTC subsystem's KconfigAlessandro Zummo2008-02-06
| | | | | | | | | | Add adds a warning if a potentially conflicting RTC option has been selected and makes some other cosmetic fixes to the Kconfig. Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fuse: limit queued background requestsMiklos Szeredi2008-02-06
| | | | | | | | | | | | | | | | Libfuse basically creates a new thread for each new request. This is fine for synchronous requests, which are naturally limited. However background requests (especially writepage) can cause a thread creation storm. To avoid this, limit the number of background requests available to userspace. This is done by introducing another queue for background requests, and a counter for the number of "active" requests, which are currently available for userspace. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fuse: save space in struct fuse_reqMiklos Szeredi2008-02-06
| | | | | | | | | Move the fields 'dentry' and 'vfsmount' into the request specific union, since these are only used for the RELEASE request. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fuse: fix attribute caching after createMiklos Szeredi2008-02-06
| | | | | | | | | Invalidate attributes on create, since st_ctime is updated. Reported by Szabolcs Szakacsits. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ecryptfs: check for existing key_tfm at mount timeEric Sandeen2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | Jeff Moyer pointed out that a mount; umount loop of ecryptfs, with the same cipher & other mount options, created a new ecryptfs_key_tfm_cache item each time, and the cache could grow quite large this way. Looking at this with mhalcrow, we saw that ecryptfs_parse_options() unconditionally called ecryptfs_add_new_key_tfm(), which is what was adding these items. Refactor ecryptfs_get_tfm_and_mutex_for_cipher_name() to create a new helper function, ecryptfs_tfm_exists(), which checks for the cipher on the cached key_tfm_list, and sets a pointer to it if it exists. This can then be called from ecryptfs_parse_options(), and new key_tfm's can be added only when a cached one is not found. With list locking changes suggested by akpm. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Cc: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* eCryptfs: change the type of cipher_code from u16 to u8Trevor Highland2008-02-06
| | | | | | | | | | Only the lower byte of cipher_code is ever used, so it makes sense for its type to be u8. Signed-off-by: Trevor Highland <trevor.highland@gmail.com> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* eCryptfs: Minor fixes to printk messagesMichael Halcrow2008-02-06
| | | | | | | | | | The printk statements that result when the user does not have the proper key available could use some refining. Signed-off-by: Mike Halcrow <mhalcrow@us.ibm.com> Cc: Mike Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ecryptfs: remove debug as mount option, and warn if set via modprobeEric Sandeen2008-02-06
| | | | | | | | | | | | | | | ecryptfs_debug really should not be a mount option; it is not per-mount, but rather sets a global "ecryptfs_verbosity" variable which affects all mounted filesysytems. It's already settable as a module load option, I think we can leave it at that. Also, if set, since secret values come out in debug messages, kick things off with a stern warning. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Mike Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ecryptfs: make show_options reflect actual mount optionsEric Sandeen2008-02-06
| | | | | | | | | | | | | | | | Change ecryptfs_show_options to reflect the actual mount options in use. Note that this does away with the "dir=" output, which is not a valid mount option and appears to be unused. Mount options such as "ecryptfs_verbose" and "ecryptfs_xattr_metadata" are somewhat indeterminate for a given fs, but in any case the reported mount options can be used in a new mount command to get the same behavior. [akpm@linux-foundation.org: fix printk warning] Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* eCryptfs: set inode key only once per crypto operationTrevor Highland2008-02-06
| | | | | | | | | | There is no need to keep re-setting the same key for any given eCryptfs inode. This patch optimizes the use of the crypto API and helps performance a bit. Signed-off-by: Trevor Highland <trevor.highland@gmail.com> Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* eCryptfs: track header bytes rather than extentsMichael Halcrow2008-02-06
| | | | | | | | | | Remove internal references to header extents; just keep track of header bytes instead. Headers can easily span multiple pages with the recent persistent file changes. Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/ecryptfs/: possible cleanupsAdrian Bunk2008-02-06
| | | | | | | | | | | | | | | | | | - make the following needlessly global code static: - crypto.c:ecryptfs_lower_offset_for_extent() - crypto.c:key_tfm_list - crypto.c:key_tfm_list_mutex - inode.c:ecryptfs_getxattr() - main.c:ecryptfs_init_persistent_file() - remove the no longer used mmap.c:ecryptfs_lower_page_cache - #if 0 the unused read_write.c:ecryptfs_read() Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/isdn/hardware/eicon/debug.c: fix uninitialized var warningAndrew Morton2008-02-06
| | | | | | | | | drivers/isdn/hardware/eicon/debug.c: In function 'SuperTraceASSIGN': drivers/isdn/hardware/eicon/debug.c:1191: warning: 'rx_dma_magic' may be used uninitialized in this function Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/isdn/hardware/eicon/message.c fix 'and' typo in eicons' AddInfo()Roel Kluin2008-02-06
| | | | | | | | | '!' has a higher priority than '&'. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ser_gigaset: convert mutex to completionTilman Schmidt2008-02-06
| | | | | | | | | | | The ser_gigaset ISDN driver was using a mutex in its close() method for waiting for other running ldisc methods to finish. That's what completions are for. Incidentally, this also avoids a spurious "BUG: lock held at task exit time" message when the driver's userspace daemon daemonizes itself. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Gigaset: permit module unloadTilman Schmidt2008-02-06
| | | | | | | | | | | | Fix the initialization and reference counting of the Gigaset driver modules so that they can be unloaded when they are not actually in use. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Greg KH <gregkh@suse.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: atomic cleanupTilman Schmidt2008-02-06
| | | | | | | | | Convert atomic_t variables that don't actually use atomic_t functionality to int. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* usb_gigaset: suspend supportTilman Schmidt2008-02-06
| | | | | | | | | | | | | | | | | Add basic suspend/resume support to the usb_gigaset driver for the Siemens Gigaset M105 USB DECT adapter. Only the USB aspects are handled so far; the ISDN subsystem is not notified in any way, for lack of information about how to do that. The driver does not check for active connections before suspending. They will be dropped when the device loses USB power. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bas_gigaset: suspend supportTilman Schmidt2008-02-06
| | | | | | | | | | | | | | | | Add basic suspend/resume support to the bas_gigaset ISDN driver for the Siemens Gigaset SX255 series of ISDN DECT bases. Only the USB aspects are handled so far; the ISDN subsystem is not notified in any way, for lack of information about how to do that. The driver will refuse to suspend if a connection is active. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: code cleanupsTilman Schmidt2008-02-06
| | | | | | | | | | | | | | | Some cleanups to the bas-gigaset and usb-gigaset USB ISDN drivers: - simplified error handling - improved debug messages - readability improvements - removal of obsolete defines and comments Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gigaset: clean up urb->status usageTilman Schmidt2008-02-06
| | | | | | | | | | | | Make there only be one reference to urb->status per URB callback, and none outside, in preparation for removal of that field. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Greg KH <gregkh@suse.de> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kprobes: kretprobe user entry-handlerAbhishek Sagar2008-02-06
| | | | | | | | | | | | | | Provide support to add an optional user defined callback to be run at function entry of a kretprobe'd function. Also modify the kprobe smoke tests to include an entry-handler during the kretprobe sanity test. Signed-off-by: Abhishek Sagar <sagar.abhishek@gmail.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Acked-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: remove more dev->power.power_state usageDavid Brownell2008-02-06
| | | | | | | | | | | Remove some more references to dev->power.power_state. That field is overdue for removal, but we can't do that while it's still referenced in the kernel. The only reason to update it was to make the /sys/devices/.../power/state files (now removed) work better. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin: headers are not for changelogsMike Frysinger2008-02-06
| | | | | | | | | | | Use simpler comment headers, and strip out information that is maintained in GIT history Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin: wait for tx to complete on write pathsSonic Zhang2008-02-06
| | | | | | | | | | SPI writes should also not return until the last bit is sent. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin: wait for tx to complete on full duplex pathsBryan Wu2008-02-06
| | | | | | | | | | | | | Full duplex SPI operation should not read a dummy byte at the first transfer. Bug and fix by Jean-Christian de Rivaz <jc@eclis.ch>: http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3678 Signed-off-by: Jean-Christian de Rivaz <jc@eclis.ch> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin: wait for tx to complete on some cs_chg pathsBryan Wu2008-02-06
| | | | | | | | | | | | | PBX 2 SPI devices need the nonstandard "cs change per word" mechanism. This patch is one of three updating this driver to make the last data bits get sent before advancing the transfer ... in this case, before the chipselect gets deactivated. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin: use more useful GPIO labelsBryan Wu2008-02-06
| | | | | | | | | | | Use the SPI driver's name when requesting gpio lines. When there are gpio conflicts, this helps to narrow down the problems; "bfin-spi" is not informative. Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_bfin: remove useless fault pathBryan Wu2008-02-06
| | | | | | | | | | | Remove useless return status check in restore_state function. Issue was pointed out by Michael. Cc: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: omap2_mcspi handles omap3 tooGirish2008-02-06
| | | | | | | | | This adds driver OMAP SPI specific changes to support OMAP 3430 Signed-off-by: Girish S G <girishsg@ti.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: SuperH SPI using SCIMagnus Damm2008-02-06
| | | | | | | | | | | | | Add support for SPI over SCI pins. SCI is a very simple serial controller block that can be found on older SuperH processors. In theory it is possible to use the SCI hardware block in syncronous mode, but this version of the driver simply hooks up the bit banging code on the SCI pins. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: s3c drivers shouldn't care about spi_board_infoDavid Brownell2008-02-06
| | | | | | | | | | | | | | | | The two S3C SPI master drivers got merged without much review, so I just noticed that they're doing something that the SPI core code is responsible for, rather than any adapter driver: they try to register SPI devices. This removes that support from those drivers so they act normally. Interestingly, none of the current boards are affected. So it's a net code shrink with no loss of functionality. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* atmel_spi: fix dmachain oops with DEBUG enabledHaavard Skinnemoen2008-02-06
| | | | | | | | | | | | | | | | In atmel_spi_next_xfer, xfer can be NULL because the next transfer may already have been submitted to the PDC (using DMA chaining). This can cause an oops, since the debug message assumed it was never null. The fix changes how those debug messages are issued, ensuring that one is issued each time a transfer is started instead of once per call. Also, properly indent the "can this transfer be chained" test so it's not hidden as if it were non-conditional code. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* atmel_spi: chain DMA transfersSilvester Erdeg2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | Add support for chained transfers in the atmel_spi driver, letting the DMA controller switch to the next buffer pair without CPU intervention. This reduced I/O latencies by about 2% in one bulk I/O test. It should also help work around several interrelated errata affecting chipselect 0 on at91rm9200 chips. Almost all of the changes are in the reworked atmel_spi_next_xfer() function. That's now called with the driver in one of three states: 1. It isn't transferring anything (in which case the first transfer of the current message is going to be sent) 2. It has finished transfering a non-chainable transfer (in which case it will go to the next transfer in the message) 3. It has finished transfering a chained transfer (in which case the next transfer is already queued) After that it will queue the next transfer if it can be chained. Signed-off-by: Szilveszter Ordog <slipszi@gmail.com> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* atmel_spi throughput improvementHaavard Skinnemoen2008-02-06
| | | | | | | | | | | | | | | | | Don't insert (undesirable) delays between consecutive words (DLYBCT) or when activating chipselects (DLYBS). Removing the between-word delays improves the performance of bulk transfers (such as mtd_dataflash, m25p80, mmc_spi) significantly. In one test, the improvement was a factor of more than eight! (The large DLYBCT value came from the legacy at91 SPI driver, and it's not clear why it used such a huge value.) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi core: stop updating dev->power.power_stateDavid Brownell2008-02-06
| | | | | | | | | | Don't update dev->power.power_state any more in the SPI core. The only reason to update this scheduled-to-be-removed field was to make the already-removed /sys/devices/.../power/state files work better. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Atari floppy: Rename disk_type to atari_disk_typeGeert Uytterhoeven2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | Commit edfaa7c36574f1bf09c65ad602412db9da5f96bf Driver core: convert block from raw kobjects to core devices This moves the block devices to /sys/class/block. It will create a flat list of all block devices, with the disks and partitions in one directory. For compatibility /sys/block is created and contains symlinks to the disks. introduced a global disk_type variable in <linux/genhd.h>, causing the following compile error on Atari: drivers/block/ataflop.c:93: error: conflicting types for 'disk_type' include/linux/genhd.h:21: error: previous declaration of 'disk_type' was here Rename the local disk_type variable in drivers/block/ataflop.c to atari_disk_type, to avoid the conflict. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* W1: w1_therm.c standardize units to millidegrees CDavid Fries2008-02-06
| | | | | | | | | | | | | | | | | | | Standardize the temperature units to millidegrees C for the two sensor conversion routines. Previously the routines were, w1_DS18B20_convert_temp degrees C w1_DS18S20_convert_temp millidegrees C Unfortunately this will break any program using the ds18b20 value as it will now be 1000 times bigger. Fortunately there can't be that many users out there, or some of these bugs will have been fixed by now, such as the negative C error (see previous patch) that makes me think the ds18b20 is the better choice to change because of the current bugs. Signed-off-by: David Fries <david@fries.net> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/cdrom/cdrom.c: simplify logic in cdrom_release()Borislav Petkov2008-02-06
| | | | | | | | | Simplify logic in cdrom_release() without semantic change. Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: remove unused and confusing variable.Evgeniy Polyakov2008-02-06
| | | | | | | | | | Remvoe variable which actually is not used (except assigning it a value) and confusing break out of the family checking loop. Found by Harry Mason. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Cc: Harry J Mason <hjm03r@ecs.soton.ac.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tpm: infineon section mismatchRandy Dunlap2008-02-06
| | | | | | | | | | | | | Fix section mismatch by making the driver template variable name match one of the whitelisted variable names in modpost. WARNING: vmlinux.o(.data+0x7a9e8): Section mismatch: reference to .init.text:tpm_inf_pnp_probe (between 'tpm_inf_pnp' and 'cn_idx') Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Marcel Selhorst <tpm@selhorst.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* speed up jiffies conversion functions if HZ==USER_HZAndrew Morton2008-02-06
| | | | | | | | | | | Avoid calling do_div(x, 1) in this case. Cc: David Fries <david@fries.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* system timer: fix crash in <100Hz system timerDavid Fries2008-02-06
| | | | | | | | | | | | | | | | | | | | | The kernel has a divide by zero crash when trying to run the system timer less than 100Hz. The problem is x/(HZ/USER_HZ) and related. Now x*(USER_HZ/HZ) will be used if HZ<USER_HZ. I'm running the Linux kernel under qemu and went to run a slower system timer to take less CPU (and battery) on the host. I found that the kernel paniced under emulation because of a divide by zero in three places. Here is the patch. The base git was updated today 01-05-2008. I went for a 20Hz system time by adding config HZ_20 etc to kernel/Kconfig.hz. With this patch I verified the system timer by looking at /proc/interrupts. [akpm@linux-foundation.org: partially clean up the macro maze] Signed-off-by: David Fries <david@fries.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* phantom: don't grab other devicesJiri Slaby2008-02-06
| | | | | | | | | | | Specify also sub pci ids to not grab devices with properly set sub ids. This devices has these set (unset) to the same as (plx 9050) ids. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Andreas Block <andreas.block@esd-electronics.com> Cc: Oliver Thimm <oliver.thimm@esd-electronics.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Claim maintainership for block2mtd and update email addressesJoern Engel2008-02-06
| | | | | | | | | | | | | | I have been prime author and maintainer of block2mtd from day one, but neither MAINTAINERS nor the module source makes this fact clear. And while I'm at it, update my email addresses tree-wide, as the old address currently bounces and change my name to "joern" as unicode will likely continue to cause trouble until the end of this century. Signed-off-by: Joern Engel <joern@lazybastard.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Documentation: add hint about call traces & module symbols to BUG-HUNTINGRichard Kennedy2008-02-06
| | | | | | | | | | | | | Here's a couple of small additions to BUG-HUNTING. 1. point out that you can list code in gdb with only one command (gdb) l *(<symbol> + offset) 2. give a very brief hint how to decode module symbols in call traces Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* make sys_poll() wait at least timeout msKarsten Wiese2008-02-06
| | | | | | | | | | | | | schedule_timeout(jiffies) waits for at least jiffies - 1. Add 1 jiffie to the timeout_jiffies calculated in sys_poll() to wait at least timeout_msecs, like poll() manpage says. Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix IXANY and restart after signal (e.g. ctrl-C) in n_tty line disciplineJoe Peterson2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | Fix two N_TTY line discipline issues related to resuming a stopped TTY (typically done with ctrl-S): 1) Fix handling of character that resumes a stopped TTY (with IXANY) With "stty ixany", the TTY line discipline would lose the first character after the stop, so typing, for example, "hi^Sthere" resulted in "hihere" (the 't' would cause the resume after ^S, but it would then be thrown away rather than processed as an input character). This was inconsistent with the behavior of other Unix systems. 2) Fix interrupt signal (e.g. ctrl-C) behavior in stopped TTYs With "stty -ixany" (often the default), interrupt signals were ignored in a stopped TTY until the TTY was resumed with the start char (typically ctrl-Q), which was inconsistent with the behavior of other Unix systems. Signed-off-by: Joe Peterson <joe@skyrush.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>
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