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* Blackfin: move internal irq prototypes out of global namespaceMike Frysinger2011-05-25
| | | | | | | | These are only used in a few internal Blackfin places, so move the irq prototypes out of the global header and into the internal irq one. No functional changes other than shuffling locales. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clean up irq ifdef logic a bitMike Frysinger2011-05-25
| | | | | | | | Prefer MMR named checks over part-specific lists, condense duplicated code across different #ifdef branches, simplify CONFIG_PM ifdefs, and drop unused kgdb header. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: bf51x/bf52x: fix typo in hysteresis MMR namesMike Frysinger2011-05-25
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: delete duplicated user single step prototypesMike Frysinger2011-05-25
| | | | | | These are in linux/ptrace.h, so no need for us to duplicate them. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: kgdb: cache flushing is not safe in SMP modeSonic Zhang2011-05-25
| | | | | | | | Make sure we mark cache flushing as unsafe to kgdb in SMP mode so that kgdb doesn't flush things incorrectly on us. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: SMP: drop unused blackfin_cpudata.idle pointerMike Frysinger2011-05-25
| | | | | | | Not sure when we stopped using this field, but nothing in the tree uses this now, so punt it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: SMP: fix cpudata cache setupMike Frysinger2011-05-25
| | | | | | | | | | After some cache setup reordering changesets, the blackfin_cpudata init was left behind. While cpu0's data was correct, cpu1's data was not. Not that big of a deal as these are only used in the cpuinfo output, but should still be fixed. So move the setup of these fields to the common cache setup function to avoid this happening again in the future. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clean up /proc/cpuinfo outputMike Frysinger2011-05-25
| | | | | | | | | The smp flush lines are too long and have too many newlines, so scale them back to match the other lines. The %p modifier shows "(null)" for 0, so use %08x instead. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: bf527-ezkit: tweak sound defconfigMike Frysinger2011-05-25
| | | | | | | Build the sound pieces that the board actually has into the kernel, and punt older devices that we discourage. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: bf533/bf537/bf561: convert to BFIN_IRQ helperMike Frysinger2011-05-25
| | | | | | | This brings the parts in line with newer ones, and makes things easier to read at a glance. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clean up style in irq definesMike Frysinger2011-05-25
| | | | | | | | | | These files had a lot of whitespace damage, mostly due to copying and pasting original files that had damage. The BF561 header also had a lot of unused CONFIG_DEF_xxx defines, so punt them all. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: unify core IRQ definitionsMike Frysinger2011-05-25
| | | | | | | Start a new common IRQ header and move all of the CEC pieces there. This lets the individual part headers worry just about its SIC defines. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: ints-priority: unify duplicate vec to irq lookup logicMike Frysinger2011-05-25
| | | | | | | | Seems the ipipe code just copied & pasted the existing irq lookup logic, so pull the logic out of do_irq() and into a local helper, and convert the two users over to that. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: ints-priority: clean up some local varsMike Frysinger2011-05-25
| | | | | | | | The local ivg structs need not be exported, so mark them as static. Further, the "num_spurious" variable is only incremented and never actually read anywhere, so punt it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: don't attempt to flush on-chip L1 SRAM regionsSonic Zhang2011-05-25
| | | | | | | | | Since the on-chip L1 regions are not cacheable, there is no point in trying to flush/invalidate them. Plus, older Blackfin parts like to trigger an exception (like BF533-0.3). Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: first pass at debug mmr supportMike Frysinger2011-05-25
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Merge branch 'for-linus/2640/i2c' of git://git.fluff.org/bjdooks/linuxLinus Torvalds2011-05-24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus/2640/i2c' of git://git.fluff.org/bjdooks/linux: (21 commits) mach-ux500: set proper I2C platform data from MOP500s i2c-nomadik: break out single messsage transmission i2c-nomadik: reset the hw after status check i2c-nomadik: remove the unnecessary delay i2c-nomadik: change the TX and RX threshold i2c-nomadik: add code to retry on timeout failure i2c-nomadik: use pm_runtime API i2c-nomadik: print abort cause only on abort tag i2c-nomadik: correct adapter timeout initialization i2c-nomadik: remove the redundant error message i2c-nomadik: corrrect returned error numbers i2c-nomadik: fix speed enumerator i2c-nomadik: make i2c timeout specific per i2c bus i2c-nomadik: add regulator support i2c: i2c-sh_mobile bus speed platform data V2 i2c: i2c-sh_mobile clock string removal i2c-eg20t: Support new device ML7223 IOH i2c: tegra: Add de-bounce cycles. i2c: tegra: fix repeated start handling i2c: tegra: recover from spurious interrupt storm ...
| *---. Merge branches 'for-2639/i2c-eg20t', 'for-2639/i2c-shmobile', ↵Ben Dooks2011-05-24
| |\ \ \ | | | | | | | | | | | | | | | 'for-2639/i2c-tegra' and 'for-2639/i2c-nomadik2' into for-linus/2640/i2c
| | | | * mach-ux500: set proper I2C platform data from MOP500sLinus Walleij2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This specifies the new per-platform timeout per I2C bus and switches the I2C buses to fast mode, and increase the FIFO depth to 8 for reads and writes. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: break out single messsage transmissionLinus Walleij2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reduce code size in the message transfer function by factoring out a single-message transfer function. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: reset the hw after status checkVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of I2C timeout, reset the HW only after the HW status is read, otherwise the staus will be lost. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: remove the unnecessary delayVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The delay in the driver seems to be not needed, so remove it. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Markus Grape <markus.grape@stericsson.com> Tested-by: Per Persson <per.xb.persson@stericsson.com> Tested-by: Chethan Krishna N <chethan.krishna@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: change the TX and RX thresholdVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) Increase RX FIFO threshold so that there is a reduction in the number of interrupts handled to complete a transaction. 2) Fill TX FIFO in the write function. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: add code to retry on timeout failureVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is seen that i2c-nomadik controller randomly stops generating the interrupts leading to a i2c timeout. As a workaround to this problem, add retries to the on going transfer on failure. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: use pm_runtime APIRabin Vincent2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the pm_runtime API for pins control. Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> [deleted some surplus runtime PM code] Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: print abort cause only on abort tagVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modify the code to: 1)Print the cause of i2c failure only if the status is set to ABORT. 2)Print slave address on send/receive fail, will help in which slave failed. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: correct adapter timeout initializationVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct the incorrect initialization of adapter timeout not to be in milliseconds, as it needs to be done in jiffies. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: remove the redundant error messagesrinidhi kasagar2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The abort cause string itself is an error, so remove the redundant explicit error message. Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: corrrect returned error numbersVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code was returning bad error numbers or just -1 in some cases. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: fix speed enumeratorLinus Walleij2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The I2C speed enumerators in the i2c-nomadik header file were in the wrong order. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: make i2c timeout specific per i2c busVirupax Sadashivpetimath2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add option to have different i2c timeout delay for different i2c buses specified in platform data. Default to the old value unless specified. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | | * i2c-nomadik: add regulator supportJonas Aberg2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This on-chip I2C controller needs to fetch the regulator representing its voltage domain so that it won't be switched off. Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | * | i2c: tegra: Add de-bounce cycles.Jay Cheng2011-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This enables debouncing of the I2C lines. The debounce period is 2 * the debounce register field value, in terms of the I2C block's main clock. The Tegra TRM indicates that a setting yielding >50nS is desirable. Hence, a setting of 2 => 4 clocks @ 72MHz => ~55nS. Signed-off-by: Ken Radtke <kradtke@nvidia.com> [swarren: Added commit description body, Fixed 80-column limit, Reverted file permission change] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | * | i2c: tegra: fix repeated start handlingErik Gilling2011-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A repeated start should be used for all but the last msg in an xfer. The NOSTART flag is for skipping the START frame (addr/rw) Signed-off-by: Erik Gilling <konkers@android.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | * | i2c: tegra: recover from spurious interrupt stormTodd Poynor2011-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-init the I2C controller when an IRQ arrives with no I2C_INT_STATUS bits set to indicate why the interrupt was sent. Storms of such mystery interrupts are infrequently seen. Dump some more status when these interrupts arrive. Set an error for the current request and wake up the requester (rather than timing out the request or possibly silently ignoring the interrupts). If the I2C block is inside the DVC, also ACK the DVC I2C transfer done interrupt in the ISR error return path, as is done for the normal return path. Signed-off-by: Todd Poynor <toddpoynor@google.com> [swarren: Fix minor checkpatch whitespace issue, commit tag] Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | | * | i2c: tegra: Enable new slave mode.Kenneth Waters2011-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For Tegra i2c controller to function properly new slave mode must be enabled. swarren notes: In particular, I found this was needed when working on enabling the Tegra audio driver on the Seaboard board. There are two different PCB layouts for this board; a "clamshell" version, which works just fine without this change, and the original non-clamshell version, which needs this change in order for I2C to operate correctly. Without it, I2C probing fails for some devices, e.g. with: wm8903 0-001a: Device with ID register 0 is not a WM8903 wm8903 0-001a: asoc: failed to probe CODEC wm8903.0-001a: -19 asoc: failed to instantiate card tegra-wm8903: -19 ALSA device list: No soundcards found. Signed-off-by: Rakesh Iyer <riyer@nvidia.com> Cc: stable <stable@kernel.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | * | | i2c: i2c-sh_mobile bus speed platform data V2Magnus Damm2011-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support to the i2c-sh_mobile driver for setting the I2C bus speed using platform data. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| | * | | i2c: i2c-sh_mobile clock string removalMagnus Damm2011-05-11
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the clock string magic from the i2c-sh_mobile driver now when all platforms support clkdev properly. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| * / / i2c-eg20t: Support new device ML7223 IOHTomoya MORINAGA2011-05-11
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | Support new device OKI SEMICONDUCTOR ML7223 IOH(Input/Output Hub). The ML7223 IOH is for MP(Media Phone) use. The ML7223 is companion chip for Intel Atom E6xx series. The ML7223 is completely compatible for Intel EG20T PCH. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
* | | Merge branch 'i2c-for-linus' of ↵Linus Torvalds2011-05-24
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: i2c-parport: Various cleanups i2c-i801: Don't depend on other kernel driver config options i2c-i801: Check for vendor Fujitsu before probing for apanel i2c-i801: Don't probe for slaves on IDF channels i2c-i801: SMBus patch for Intel Panther Point DeviceIDs i2c/writing-clients: Fix foo_driver.id_table
| * | | i2c-parport: Various cleanupsJean Delvare2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Fix white space. * Rename labels to something meaningful. * Prefix defines with PORT_ to avoid collision with macros from <linux/parport.h>. * Add const markers where possible. Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * | | i2c-i801: Don't depend on other kernel driver config optionsJean Delvare2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't let other driver config options influence us, as it makes the code more complex and fragile for a small benefit. There's nothing wrong with instantiating I2C devices even if they don't have a driver. And we're talking about 835 extra bytes in the binary on x86-64, that's hardly worth arguing about. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Woodhouse <david.woodhouse@intel.com> Cc: Hans de Goede <hdegoede@redhat.com>
| * | | i2c-i801: Check for vendor Fujitsu before probing for apanelJean Delvare2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Scanning the BIOS memory for the apanel information is costly, so avoid doing it on non-Fujitsu machines. Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * | | i2c-i801: Don't probe for slaves on IDF channelsJean Delvare2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I don't know if Fujitsu is ever going to produce Patsburg-based machines, but if they do, I'd rather not probe the secondary (IDF) SMBus channels. At least not until we have a good reason for doing so. On a side note, I'm not even sure if it is right to enable detection of HWMON and DDC devices on the IDF channels. Time will tell... Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | i2c-i801: SMBus patch for Intel Panther Point DeviceIDsSeth Heasley2011-05-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the SMBus controller DeviceID for the Intel Panther Point PCH. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * | | i2c/writing-clients: Fix foo_driver.id_tableVikram Narayanan2011-05-24
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | The i2c_device_id structure variable's name is not used in the i2c_driver structure. Signed-off-by: Vikram Narayanan <vikram186@gmail.com> Cc: stable@kernel.org Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | | Merge branch 'for_linus' of ↵Linus Torvalds2011-05-24
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6: jbd: Fix comment to match the code in journal_start() jbd/jbd2: remove obsolete summarise_journal_usage. jbd: Fix forever sleeping process in do_get_write_access() ext2: fix error msg when mounting fs with too-large blocksize jbd: fix fsync() tid wraparound bug ext3: Fix fs corruption when make_indexed_dir() fails ext3: Fix lock inversion in ext3_symlink()
| * | | jbd: Fix comment to match the code in journal_start()Eryu Guan2011-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | journal_start returns an ERR_PTR() value rather than NULL on failure. Cc: Jan Kara <jack@suse.cz> Signed-off-by: Eryu Guan <guaneryu@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
| * | | jbd/jbd2: remove obsolete summarise_journal_usage.Tao Ma2011-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | summarise_journal_usage seems to be obsolete for a long time, so remove it. Cc: Jan Kara <jack@suse.cz> Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz>
| * | | jbd: Fix forever sleeping process in do_get_write_access()Jan Kara2011-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In do_get_write_access() we wait on BH_Unshadow bit for buffer to get from shadow state. The waking code in journal_commit_transaction() has a bug because it does not issue a memory barrier after the buffer is moved from the shadow state and before wake_up_bit() is called. Thus a waitqueue check can happen before the buffer is actually moved from the shadow state and waiting process may never be woken. Fix the problem by issuing proper barrier. CC: stable@kernel.org Reported-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz>
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