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* MIPS: Octeon: Use optimized memory barrier primitives.David Daney2010-02-272-13/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to achieve correct synchronization semantics, the Octeon port had defined CONFIG_WEAK_REORDERING_BEYOND_LLSC. This resulted in code that looks like: sync ll ... . . . sc ... . . sync The second SYNC was redundant, but harmless. Octeon has a SYNCW instruction that acts as a write-memory-barrier (due to an erratum in some parts two SYNCW are used). It is much faster than SYNC because it imposes ordering on the writes, but doesn't otherwise stall the execution pipeline. On Octeon, SYNC stalls execution until all preceeding writes are committed to the coherent memory system. Using: syncw;syncw ll . . . sc . . Has identical semantics to the first sequence, but is much faster. The SYNCW orders the writes, and the SC will not complete successfully until the write is committed to the coherent memory system. So at the end all preceeding writes have been committed. Since Octeon does not do speculative reads, this functions as a full barrier. The patch removes CONFIG_WEAK_REORDERING_BEYOND_LLSC, and substitutes SYNCW for SYNC in write-memory-barriers. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/850/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: New macro smp_mb__before_llsc.David Daney2010-02-276-25/+32
| | | | | | | | | | | | | | | | | Replace some instances of smp_llsc_mb() with a new macro smp_mb__before_llsc(). It is used before ll/sc sequences that are documented as needing write barrier semantics. The default implementation of smp_mb__before_llsc() is just smp_llsc_mb(), so there are no changes in semantics. Also simplify definition of smp_mb(), smp_rmb(), and smp_wmb() to be just barrier() in the non-SMP case. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/851/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Remove unused macros from barrier.hDavid Daney2010-02-271-2/+0
| | | | | | | | | | The smp_llsc_rmb() and smp_llsc_wmb() macros are not used in the tree, remove them. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/848/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Register some devices on the I2C bus.David Daney2010-02-271-0/+13
| | | | | | | | | | | Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: linux-i2c@vger.kernel.org To: ben-linux@fluff.org To: khali@linux-fr.org Cc: Rade Bozic <rade.bozic.ext@nsn.com> Patchwork: http://patchwork.linux-mips.org/patch/845/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: I2C: Add driver for Cavium OCTEON I2C ports.Rade Bozic2010-02-273-0/+662
| | | | | | | | | | | | | | Signed-off-by: Rade Bozic <rade.bozic.ext@nsn.com> Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: Michael Lawnick <michael.lawnick.ext@nsn.com> To: linux-mips@linux-mips.org To: linux-i2c@vger.kernel.org To: ben-linux@fluff.org To: khali@linux-fr.org Cc: rade.bozic.ext@nsn.com Cc: Michael Lawnick <michael.lawnick.ext@nsn.com> Patchwork: http://patchwork.linux-mips.org/patch/890/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Octeon: Add I2C platform device.David Daney2010-02-272-0/+77
| | | | | | | | | | | Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org To: linux-i2c@vger.kernel.org To: ben-linux@fluff.org To: khali@linux-fr.org Cc: Rade Bozic <rade.bozic.ext@nsn.com> Patchwork: http://patchwork.linux-mips.org/patch/847/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Simplify param.h by using <asm-generic/param.h>Robert P. J. Day2010-02-271-16/+1
| | | | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/810/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: get rid of common/reset.cManuel Lauss2010-02-278-225/+99
| | | | | | | | | | | | | Implement reset / poweroff in the board code instead. The peripheral reset code is gone too since YAMON which all in-tree boards use does the same work when it boots. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: Linux-MIPS <linux-mips@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/783/ Patchwork: http://patchwork.linux-mips.org/patch/882/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Two-level pagetables for 64-bit kernels with 64KB pages.David Daney2010-02-278-35/+71
| | | | | | | | | | | | | For 64-bit kernels with 64KB pages and two level page tables, there are 42 bits worth of virtual address space This is larger than the 40 bits of virtual address space obtained with the default 4KB Page size and three levels, so there are no draw backs for using two level tables with this configuration. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/761/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: irq: use runtime CPU type detectionManuel Lauss2010-02-271-43/+54
| | | | | | | | | Use runtime CPU detection instead of relying on preprocessor symbols. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/701/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Only build AU1000 INTC code for compatible cpusManuel Lauss2010-02-273-10/+12
| | | | | | | | | | Use the GPIO config symbol to only build Au1000 interrupt code on chips with compatible hw. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/670/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: use runtime cpu detection in GPIO code.Manuel Lauss2010-02-272-49/+51
| | | | | | | | | | | Remove the cpu subtype cpp macros in favor of runtime detection, to improve compile coverage of the alchemy common code. (Increases kernel size by 700 bytes). Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/699/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* NET: au1000-eth: Convert to platform_driver modelFlorian Fainelli2010-02-272-218/+232
| | | | | | | | | | | | | | | | This patch converts the au1000-eth driver to become a full platform-driver as it ought to be. We now pass PHY-speficic configurations through platform_data but for compatibility the driver still assumes the default settings (search for PHY1 on MAC0) when no platform_data is passed. Tested on my MTX-1 board. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org Acked-by: David S. Miller <davem@davemloft.net> Patchwork: http://patchwork.linux-mips.org/patch/619/ Patchwork: http://patchwork.linux-mips.org/patch/963/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Add au1000-eth platform deviceFlorian Fainelli2010-02-273-0/+124
| | | | | | | | | | | | | | This patch makes the board code register the au1000-eth platform device. The au1000-eth platform data can be overriden with the au1xxx_override_eth_cfg function like it has to be done for the Bosporus board which uses a different MAC/PHY setup. Signed-off-by: Florian Fainelli <florian@openwrt.org> Cc: David Miller <davem@davemloft.net> Cc: linux-mips@linux-mips.org Cc: netdev@vger.kernel.org Patchwork: http://patchwork.linux-mips.org/patch/618/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: DB1200 defconfig updateManuel Lauss2010-02-271-631/+850
| | | | | | Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS/SOUND: Alchemy: DB1200 AC97+I2S audio support.Manuel Lauss2010-02-275-150/+200
| | | | | | | | | | | | | Machine driver for DB1200 AC97 and I2S audio systems, intended as a proper reference asoc machine for Alchemy-based systems. AC97/I2S can be selected at boot time by setting switch S6.7. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Cc: alsa-devel@alsa-project.org Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Extended DB1200 board support.Manuel Lauss2010-02-278-75/+654
| | | | | | | | | | | | | | | | | | | Create own directory for DB1200 code and update it with new features. - SPI support: - tmp121 temperature sensor - SPI flash on DB1200 - I2C support - NE1619 sensor - AT24 eeprom - I2C/SPI can be selected at boot time via switch S6.8 - Carddetect IRQs for SD cards. - gen_nand based NAND support. - hexleds count sleep/wake transitions. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: physmap-flash for all devboardsManuel Lauss2010-02-2711-173/+163
| | | | | | | | | | | Replace the devboard NOR MTD mapping driver with physmap-flash support. Also honor the "swapboot" switch settings wrt. to the layout of the NOR partitions. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Acked-By: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Don't include <linux/smp_lock.h> unnecessarily.Ralf Baechle2010-02-274-4/+0
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* SERIAL 8250: Fixes for Alchemy UARTs.Manuel Lauss2010-02-271-7/+8
| | | | | | | | | | | | | | | | | | Limit the amount of address space claimed for Alchemy serial ports to 0x1000. On the Au1300, ports are only 0x1000 apart, and the registers only extend to 0x110 at most on all supported alchemy models. On the Au1300 the autodetect logic no longer works and this makes it necessary to specify the port type through platform data. Because of this the MSR quirk needs to be moved outside the autoconfig() function which will no longer be called when UPF_FIXED_TYPE is specified. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org>, Cc: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: UARTs are of type 16550AManuel Lauss2010-02-271-1/+3
| | | | | | | | | UART autodetection breaks on the Au1300 but the IP blocks are identical, at least according to the datasheets. Help the 8250 driver by passing on uart type information via platform data. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Turn on -Werror for devboards and xss1500Florian Fainelli2010-02-272-0/+4
| | | | | | | | Warnings being suppressed, we can now turn on -Werror for boards which did not have it already (devboards and xss1500). Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Fix warnings in DB1x00 / PB1000 / PB1550 board setup codeFlorian Fainelli2010-02-273-5/+10
| | | | | | | | | This patch fixes warnings due to potentially unused variables in board setup code or mixed variables declaration and code (forbidden by ISO C90). Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: remove unused SYS area structureManuel Lauss2010-02-271-49/+0
| | | | | | | Nothing in-tree uses it, so get rid of it. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: get rid of superfluous UART definitionsManuel Lauss2010-02-272-115/+21
| | | | | | | Remove unused uart bit definitions and base macros. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: prom_putchar is board dependentManuel Lauss2010-02-277-69/+51
| | | | | | | | | | | | | | | This patch replaces the general alchemy prom_putchar() implementation in favor of board-specific versions: The UART where the output of prom_putchar is directed to really depends on the board, the current implementation hardcodes this on a per-SoC basis which is just wrong. So a generic uart tx function is provided in the alchemy headers, and the boards can provide their own prom_putchar with custom destination uart, and all in-kernel alchemy boards support early printk. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: change dbdma to accept physical memory addressesManuel Lauss2010-02-277-26/+26
| | | | | | | | | | DMA can only be done from physical addresses; move the "virt_to_phys" source/destination buffer address translation from the dbdma queueing functions (since the hardware can only DMA to/from physical addresses) to their respective users. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: remove dbdma compat macrosManuel Lauss2010-02-277-51/+32
| | | | | | | | | | | | Remove dbdma compat macros, move remaining users over to default queueing functions and -flags. (Queueing function signature has changed in order to give a build failure instead of silent functional changes due to the no longer implicitly specified DDMA_FLAGS_IE flag) Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: reduce size of irq dispatcherManuel Lauss2010-02-271-3/+5
| | | | | | | | By replacing an extra do_IRQ with a goto, the assembly shrinks from 260 to 212 bytes (gcc-4.3.4). Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Stop IRQ name sharingManuel Lauss2010-02-2719-665/+743
| | | | | | | | | | | | | | | | | | | | Eliminate the sharing of IRQ names among the differenct Alchemy variants. IRQ numbers need no longer be hidden behind a CONFIG_SOC_AU1XXX symbol: step 1 in my quest to make the Alchemy code less reliant on a hardcoded subtype. This patch also renames the GPIO irq number constants. It's really an interrupt line, NOT a GPIO number! Code which relied on certain irq numbers to have the same name across all supported cpu subtypes is changed to determine current cpu subtype at runtime; in some places this isn't possible so a "compat" symbol is used. Run-tested on DB1200. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Simple cpu subtype detectorManuel Lauss2010-02-271-0/+31
| | | | | | | | | | Extract the alchemy chip variant from c0_prid register. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/14/ Patchwork: http://patchwork.linux-mips.org/patch/707/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: higher priority for system timer.Manuel Lauss2010-02-271-5/+5
| | | | | | | | Raise RTCMATCH2 interrupt priority in case it is used as the system timer tick. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: Remove USB_DEV_REQ_INT prioritization hackManuel Lauss2010-02-271-28/+22
| | | | | | | | | | | | The Alchemy hardware provides a method to prioritize interrupts on a controller by assigning them to a differenct core request line. Assign usb device request interrupt to IC0 Request 0 (which has highest priority in the core and the dispatcher) and others to Request 1. The explicit check for usb device request occurrence should be obsolete now. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: XXS1500 PCMCIA driver rewriteManuel Lauss2010-02-277-206/+433
| | | | | | | | | | Rewritten XXS1500 PCMCIA socket driver, standalone (doesn't depend on au1000_generic.c) and added carddetect IRQ support. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Florian Fainelli <florian@openwrt.org> Cc: Linux-PCMCIA <linux-pcmcia@lists.infradead.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: devboards: wire up new PCMCIA driver.Manuel Lauss2010-02-2722-125/+412
| | | | | | | | | Register the PCMCIA driver on all boards supported by it, get rid of now-unused pcmcia macros in the board headers (and subsequently empty pb1100/pb1500 ones). Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: PCMCIA: new socket driver for Au1000 demoboards.Manuel Lauss2010-02-279-451/+660
| | | | | | | | | | | | | | | | | | | New PCMCIA socket driver for all Db/Pb1xxx boards (except Pb1000), which replaces au1000_db1x00.c and (most of) au1000_pb1x00.c. Notable improvements: - supports Db1000, DB/PB1100/1500/1550/1200. - support for carddetect and statuschange IRQs. - pcmcia socket mem/io/attr areas and irqs passed through platform resource information. - doesn't freeze system during card insertion/ejection like the one it replaces. - boardtype is automatically detected using BCSR ID register. Run-tested on the DB1200. Cc: Linux-PCMCIA <linux-pcmcia@lists.infradead.org> Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: remove board_init_irq() function.Manuel Lauss2010-02-2720-348/+192
| | | | | | | | | | | | | remove board_init_irq(): On all in-kernel boards it is sufficient to initialize board interrupts in an arch_initcall by using the default linux irq functions. Some small irqmap.c files have been folded into board_setup files. Run-tested on DB1200; compile-tested on all other affected boards. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: devboards: factor out PB1200 IRQ cascade code.Manuel Lauss2010-02-273-70/+76
| | | | | | | | Move the PB1200 IRQ cascade code out to the BCSR support code: upcoming DB1300 support can use it too. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Alchemy: devboard register abstractionManuel Lauss2010-02-2719-596/+475
| | | | | | | | | | | | | | | | | | All Alchemy development boards have external CPLDs with a few registers in them. They all share an identical register layout with only a few minor differences (except the PB1000) in bit functions and base addresses. This patch - adds a primitive facility to initialize and use these external registers, - replaces all occurrences of bcsr->xxx accesses with calls to the new functions (the pb1200 cascade irq handling code is special). - collects BCSR register information scattered throughout the board headers in a central place. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Fix build error for uncompressed non-plain vmlinux kernelsRalf Baechle2010-02-271-2/+11
| | | | | | | | | | | | | | Seen on rm200_defconfig for example: CC arch/mips/boot/compressed/decompress.o /home/ralf/src/linux/upstream-linus/arch/mips/boot/compressed/decompress.c: In function ‘decompress_kernel’: /home/ralf/src/linux/upstream-linus/arch/mips/boot/compressed/decompress.c:116: error: implicit declaration of function ‘decompress’ make[3]: *** [arch/mips/boot/compressed/decompress.o] Error 1 make[2]: *** [vmlinuz.ecoff] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-02-2728-84/+631
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / Hibernate: Fix preallocating of memory PM / Hibernate: Remove swsusp.c finally PM / Hibernate: Remove trailing space in message PM: Allow SCSI devices to suspend/resume asynchronously PM: Allow USB devices to suspend/resume asynchronously USB: implement non-tree resume ordering constraints for PCI host controllers PM: Allow PCI devices to suspend/resume asynchronously PM / Hibernate: Swap, remove useless check from swsusp_read() PM / Hibernate: Really deprecate deprecated user ioctls PM: Allow device drivers to use dpm_wait() PM: Start asynchronous resume threads upfront PM: Add facility for advanced testing of async suspend/resume PM: Add a switch for disabling/enabling asynchronous suspend/resume PM: Asynchronous suspend and resume of devices PM: Add parent information to timing messages PM: Document device power attributes in sysfs PM / Runtime: Add sysfs switch for disabling device run-time PM
| * PM / Hibernate: Fix preallocating of memoryRafael J. Wysocki2010-02-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The hibernate memory preallocation code allocates memory to push some user space data out of physical RAM, so that the hibernation image is not too large. It allocates more memory than necessary for creating the image, so it has to release some pages to make room for allocations made while suspending devices and disabling nonboot CPUs, or the system will hang due to the lack of free pages to allocate from. Unfortunately, the function used for freeing these pages, free_unnecessary_pages(), contains a bug that prevents it from doing the job on all systems without highmem. Fix this problem, which is a regression from the 2.6.30 kernel, by using the right condition for the termination of the loop in free_unnecessary_pages(). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-and-tested-by: Alan Jenkins <sourcejedi.lkml@googlemail.com> Cc: stable@kernel.org
| * PM / Hibernate: Remove swsusp.c finallyJiri Slaby2010-02-261-58/+0
| | | | | | | | | | | | | | | | | | | | | | | | Its contents and entry in Makefile were already removed in 8e60c6a1348e17e68ad73589a52a03876e7059be (Shift remaining code from swsusp.c to hibernate.c) but somehow it remained in-place (rjw: which most likely was my mistake). Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Nigel Cunningham <nigel@tuxonice.net> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * PM / Hibernate: Remove trailing space in messageFrans Pop2010-02-261-1/+1
| | | | | | | | | | | | | | | | Remove a trailing space from a message in swsusp_save(). Signed-off-by: Frans Pop <elendil@planet.nl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * PM: Allow SCSI devices to suspend/resume asynchronouslyRafael J. Wysocki2010-02-262-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set power.async_suspend for all SCSI devices, targets and hosts, so that they can be suspended and resumed in parallel with the main suspend/resume thread and possibly with other devices they don't depend on in a known way (i.e. devices which are not their parents or children). The power.async_suspend flag is also set for devices that don't have suspend or resume callbacks, because otherwise they would make the main suspend/resume thread wait for their "asynchronous" children (during suspend) or parents (during resume), effectively negating the possible gains from executing these devices' suspend and resume callbacks asynchronously. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * PM: Allow USB devices to suspend/resume asynchronouslyRafael J. Wysocki2010-02-263-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Set power.async_suspend for USB devices, endpoints and interfaces, allowing them to be suspended and resumed asynchronously during system sleep transitions. The power.async_suspend flag is also set for devices that don't have suspend or resume callbacks, because otherwise they would make the main suspend/resume thread wait for their "asynchronous" children (during suspend) or parents (during resume), effectively negating the possible gains from executing these devices' suspend and resume callbacks asynchronously. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * USB: implement non-tree resume ordering constraints for PCI host controllersAlan Stern2010-02-263-1/+135
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch (as1331) adds non-tree ordering constraints needed for proper resume of PCI USB host controllers from hibernation. The main issue is that non-high-speed devices must not be resumed before the high-speed root hub, because it is the ehci_bus_resume() routine which takes care of handing the device connection over to the companion controller. If the device resume is attempted before the handover then the device won't be found and it will be treated as though it had disconnected. The patch adds a new field to the usb_bus structure; for each full/low-speed bus this field will contain a pointer to the companion high-speed bus (if one exists). It is used during normal device resume; if the hs_companion pointer isn't NULL then we wait for the root-hub device on the hs_companion bus. A secondary issue is that an EHCI controlller shouldn't be resumed before any of its companions. On some machines I have observed handovers failing if the companion controller is reinitialized after the handover. Thus, the EHCI resume routine must wait for the companion controllers to be resumed. The patch also fixes a small bug in usb_hcd_pci_probe(); an error path jumps to the wrong label, causing a memory leak. [rjw: Fixed compilation for CONFIG_PM_SLEEP unset.] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * PM: Allow PCI devices to suspend/resume asynchronouslyRafael J. Wysocki2010-02-263-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Set power.async_suspend for all PCI devices and PCIe port services, so that they can be suspended and resumed in parallel with other devices they don't depend on in a known way (i.e. devices which are not their parents or children). This only affects the "regular" suspend and resume stages, which means in particular that the restoration of the PCI devices' standard configuration registers during resume will still be carried out synchronously (at the "early" resume stage). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * PM / Hibernate: Swap, remove useless check from swsusp_read()Jiri Slaby2010-02-261-4/+0
| | | | | | | | | | | | | | | | | | It will never reach here if the sws_resume_bdev is erratic. swsusp_read() is called only from software_resume(), but after swsusp_check() which would catch the error state. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| * PM / Hibernate: Really deprecate deprecated user ioctlsJiri Slaby2010-02-262-4/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | They were deprecated and removed from exported headers more than 2 years ago. Inform users about their removal in the future now. (Switch cases needed to be reorderded for an easy fall through.) And add an entry to feature-removal-schedule. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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