- 17 Jul, 2007 40 commits
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Christoph Hellwig authored
There's a clear subfunctionality of reconnecting a given dentry to the main dentry tree in find_exported_dentry, that can be called both for the dentry we're looking for or it's parent directory. This patch splits the subfunctionality out into a separate helper to make the code more readable and document it's intent. As a nice side-optimization we can avoid getting a superfluous dentry reference count in the case we need to reconnect a directory on it's own. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Christoph Hellwig authored
Break the loop that finds the root of a disconnected subtree into a helper of its own to make reading easier and document the intent. Signed-off-by:
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Christoph Hellwig authored
All callers of find_acceptable_alias check if the current dentry is acceptable before looking for other acceptable aliases using find_acceptable_alias. Move the check into find_acceptable_alias to make the code a little more dense and add a comment to find_acceptable_alias that documents its intent. Signed-off-by:
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Christoph Hellwig authored
Rework some logic in find_exported_dentry so that we only have a single S_ISDIR check and logic that makes clear to the reader what we're really doing here. Signed-off-by:
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Christoph Hellwig authored
Currently exportfs uses a way to call methods very differently from the rest of the kernel. This patch changes it to the standard conventions for method calls. Signed-off-by:
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Christoph Hellwig authored
Currently NFSD calls directly into filesystems through the export_operations structure. I plan to change this interface in various ways in later patches, and want to avoid the export of the default operations to NFSD, so this patch adds two simple exportfs_encode_fh/exportfs_decode_fh helpers for NFSD to call instead of poking into exportfs guts. Signed-off-by:
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Christoph Hellwig authored
When the exportfs interface was added the expectation was that filesystems provide an operation to convert from a file handle to an inode/dentry, but it kept a backwards compat option that still calls into iget. Calling into iget from non-filesystem code is very bad, because it gives too little information to filesystem, and simply crashes if the filesystem doesn't implement the ->read_inode routine. Fortunately there are only two filesystems left using this fallback: efs and jfs. This patch moves a copy of export_iget to each of those to implement the get_dentry method. While this is a temporary increase of lines of code in the kernel it allows for a much cleaner interface and important code restructuring in later patches. [akpm@linux-foundation.org: add jfs_get_inode_flags() declaration] Signed-off-by:
Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by:
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Christoph Hellwig authored
currently the export_operation structure and helpers related to it are in fs.h. fs.h is already far too large and there are very few places needing the export bits, so split them off into a separate header. [akpm@linux-foundation.org: fix cifs build] Signed-off-by:
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Vasily Averin authored
Fix output of i2o debug messages, extra KERN_ are removed. Signed-off-by:
Vasily Averin <vvs@sw.ru> Acked-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Acked-by:
Kirill Korotaev <dev@openvz.org> Signed-off-by:
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Vasily Averin authored
Fix oops on reading from some i2o proc files (i2o_seq_show_driver_store() and other) because their handlers uses "exec" field in struct i2o_controller Signed-off-by:
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Vasily Averin authored
We need to free i2o msg in case of error. Signed-off-by:
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Vasily Averin authored
This patch fixes access to memory that has not been allocated: i2o_msg_get_wait() can returns errors different from I2O_QUEUE_EMPTY. But the result is checked only against this code. If it is not I2O_QUEUE_EMPTY then we dereference the error code as the pointer later. Signed-off-by:
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Vasily Averin authored
This patch fixes a number of issues in i2o_cfg_passthru{,32}: - i2o_msg_get_wait() return vaile is not checked; - i2o_message memory leaks on error paths; - infinite loop to sg_list_cleanup in passthru32 It's important issue because of i2o_cfg_passthru is used by raidutils for monitorig controllers state, and in case of memory shortage it leads to the node crash or disk IO stall. [akpm@linux-foundation.org: fix null-ptr deref] Signed-off-by: -
Armin Schindler authored
coverity spotted a possible leak in the idifunc.c file (bug id #1252), in um_new_card(), if the diva_user_mode_idi_create_adapter() fails, we dont free the memory allocated for card Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Acked-by:
Armin Schindler <armin@melware.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by:
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Andrew Morton authored
drivers/isdn/capi/capi.c: In function 'handle_minor_send': drivers/isdn/capi/capi.c:552: warning: cast from pointer to integer of different size Of course, the code here might actually be buggy, in which case this patch should not be applied? Answer: No this field is ignored inside linux kernel.Yes this is ugly, but it's the CAPI spec for all OS. CAPI DATA_B3 Request/Indication CAPI Message has a mandatory field which represent the 32 bit buffer address of the payload data. In linux the payload data do not use a sperate buffer, data follows directely after the CAPI Message in the same skb and we use this assumption inside the drivers, so we can ignore this field. Inside the linux CAPI implemetation we never use this field, so it could also have no value, but since random data in a message is bad as well (e.g. displayed in CAPI traces) we set is to the most adequate value. Outside the kernel the capi20 library sets the correct addresses (there is an optional second field for 64 bit adresses for 64 bit systems, we do not use here). Acked-by:
Karsten Keil <kkeil@suse.de> Signed-off-by:
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Jan Engelhardt authored
Transform Kconfig objects from "menu, config" into "menuconfig" so that the user can disable the whole feature without having to enter the menu first. Signed-off-by:
Jan Engelhardt <jengelh@gmx.de> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by:
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Jan Engelhardt authored
Transform Kconfig objects from "menu, config" into "menuconfig" so that the user can disable the whole feature without having to enter the menu first. Signed-off-by:
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Jan Engelhardt authored
Transform "depends on" into a simpler if-endif block style dependency. Signed-off-by:
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Jan Engelhardt authored
Transform Kconfig objects from "menu, config" into "menuconfig" so that the user can disable the whole feature without having to enter the menu first. Signed-off-by:
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Karsten Keil authored
The interrupts schould be disabled until the driver is ready and the IRQ function was registered. Thanks to Bastian Friedrich and Thomas Voegtle for spotting this. Signed-off-by:
Bastian Friedrich <bastian@bastian-friedrich.de> Signed-off-by:
Thomas Voegtle <tv@lio96.de> Signed-off-by:
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Pavel Emelianov authored
The similar code exists here and is called capi_driver_get_idx(). Use generic helpers now and remember to convert list_head to struct capi_driver in .show callback. Signed-off-by:
Pavel Emelianov <xemul@openvz.org> Acked-by:
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David Woodhouse authored
The {l1,l2,l3,lli,tei}_revision strings in the HiSax driver are 'const', but have a mismatching declaration as 'extern char *' in config.c. Signed-off-by:David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Matthias Kaehlcke authored
The CAPI 2.0 driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by:
Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Acked-by:
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Matthias Kaehlcke authored
The SPI core/init code uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by:
David Brownell <david-b@pacbell.net> Signed-off-by:
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Atsushi Nemoto authored
This is a driver for SPI controller built into TXx9 MIPS SoCs. This driver is derived from arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by:
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Samuel Ortiz authored
Add OMAP24XX McSPI (Multichannel SPI) controller driver. This driver is tested very well under OMAP GIT tree with N800 - Nokia Internet Tablet, and some other OMAP2 boards. Recent updates included bugfixes, cleanups, speedups, and better conformance to the current SPI programming interface. This doesn't yet understand the third controller instance on the OMAP 2430. [david-b@pacbell.net: more minor cleanups to the omap2_mcspi driver] Signed-off-by:
Juha Yrjölä <juha.yrjola@solidboot.com> Signed-off-by:
Trilok Soni <soni.trilok@gmail.com> Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Cc: Tony Lindgren <tony@atomide.com> Signed-off-by:
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Joakim Tjernlund authored
Quicc Engine enabled mpc83xx CPU's has a somewhat different HW interface to the SPI controller. This patch adds a qe_mode knob that sees to that needed adaptions are performed. Signed-off-by:
Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by:
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Andrei Konovalov authored
Simple SPI master driver for Xilinx SPI controller. No support for multiple masters. Not using level 1 drivers from EDK. [akpm@linux-foundation.org: uninlining] Signed-off-by:
Yuri Frolov <yfrolov@ru.mvista.com> Signed-off-by:
Andrei Konovalov <akonovalov@ru.mvista.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Ben Dooks authored
Add support for the Infineon TLE62x0 series of low-side driver chips, such as the TLE6220 or TLE6230. These can be viewed as output GPIOs specialized for power switching applications. The driver provides a userspace interface to those GPIOs, and to the switch status they provide. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
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David Brownell authored
Tweak Kconfig for the S3C24XX SPI controller drivers. Both use the bitbang framework; only one previously said that. Plus in this case "select" is the right way to manage that dependency, since folk will not know up front to enable bitbang in order to even see those S3C drivers in order to enable them. Signed-off-by:
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David Brownell authored
Update chipselect handling for atmel_spi: * Teach it how to leave chipselect active between messages; this helps various drivers work better. * Cope with at91rm0200 errata: nCS0 can't be managed with GPIOs. The MR.PCS value is now updated whenever a chipselect changes. (This requires SPI pinmux init for that controller to change, and also testing on rm9200; doesn't break at91sam9 or avr32.) * Fix minor glitches: spi_setup() must leave chipselects inactive, as must removal of the spi_device. Also tweak diagnostic messaging to be a bit more useful. Signed-off-by:Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by:
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David Brownell authored
Minor updates to atmel_spi: - DMA: * Comments to explain the DMA policies * Report any mapping errors from spi_transfer() * Remove extra loop for DMA mapping - Diagnostics: report minimum clock rate, if we need to reject a spi_setup() request because that rate is too low. Signed-off-by: -
Clifford Wolf authored
The MPC83xx SPI controller clock divider can divide the system clock by not more then 1024. The spi_mpc83xx driver does not check this and silently writes garbage to the SPI controller registers when asked to run at lower frequencies. I've tried to run the SPI on a 266MHz MPC8349E with 100kHz for debugging a bus problem and suddenly was confronted with a 2nd problem to debug.. ;-) The patch adds an additional check which avoids writing garbage to the SPI controller registers and warn the user about it. This might help others to avoid simmilar problems. Cc: Kumar Gala <galak@gate.crashing.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by:
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Kaiwan N Billimoria authored
This adds a driver for the LM70-LLP parport adapter, which is an eval board for the LM70 temperature sensor. For those without that board, it may be a simpler example of a parport-to-SPI adapter then spi_butterfly. Signed-off-by:
Kaiwan N Billimoria <kaiwan@designergraphix.com> Doc, coding style, and interface updates; build fixes. Minor rename. Signed-off-by:
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David Brownell authored
Get rid of annoying GCC warning on 32-bit platforms. drivers/spi/spidev.c: In function 'spidev_message': drivers/spi/spidev.c:184: warning: cast to pointer from integer of different size drivers/spi/spidev.c:216: warning: cast to pointer from integer of different size The trick is to add an extra cast using "ptrdiff_t" to convert the u64 to the correct size integer, and only then casting it into a "void *" pointer. Signed-off-by:
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Jan Nikitenko authored
Add CRC7 routines, used for example in MMC over SPI communication. Kerneldoc updates [akpm@linux-foundation.org: fix funny mix of const and non-const] Signed-off-by:
Jan Nikitenko <jan.nikitenko@gmail.com> Signed-off-by:
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David Brownell authored
Add a new spi->mode bit: SPI_3WIRE, for chips where the SI and SO signals are shared (and which are thus only half duplex). Update the LM70 driver to require support for that hardware mode from the controller. Signed-off-by:
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David Brownell authored
Minor SPI controller driver updates: make the setup() methods reject spi->mode bits they don't support, by masking aginst the inverse of bits they *do* support. This insures against misbehavior later when new mode bits get added. Most controllers can't support SPI_LSB_FIRST; more handle SPI_CS_HIGH. Support for all four SPI clock/transfer modes is routine. Signed-off-by:
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Dmitry Torokhov authored
IBMASM: must depend on CONFIG_INPUT The driver registers couple of input devices and therefore must depend on CONFIG_INPUT. Signed-off-by:
Dmitry Torokhov <dtor@mail.ru> Cc: Vernon Mauery <vernux@us.ibm.com> Cc: Max Asbock <masbock@us.ibm.com> Signed-off-by:
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Dmitry Torokhov authored
IBMASM: miscellaneous fixes Fix some minor issues, such as: - properly set up ID of keyboard device (was mixed up with mouse) - constify translation tables - change some variables to #defines - set up input device's parent to form proper sysfs hierarchy - minor formatting changes Signed-off-by:
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