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* some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau2007-07-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Freezer: make kernel threads nonfreezable by defaultRafael J. Wysocki2007-07-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-07-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (50 commits) [ARM] sa1100: remove boot time RTC initialisation [ARM] sa1100: stop doing our own rtc management over suspend [ARM] 4474/1: Do not check the PSR_F_BIT in valid_user_regs [ARM] 4473/2: Take the HWCAP definitions out of the elf.h file [ARM] pxa: move platform devices to separate header file [ARM] pxa: move device registration into CPU-specific file [ARM] pxa: remove boot time RTC initialisation [ARM] pxa: stop doing our own rtc management over suspend [ARM] 4451/1: pxa: make dma.c generic and remove cpu specific dma code [ARM] 4450/1: pxa: add pxa25x_init_irq() and pxa27x_init_irq() [ARM] 4440/1: PXA: enable the checking of ICIP2 for IRQs [ARM] 4438/1: PXA: remove #ifdef .. #endif from pxa_gpio_demux_handler() [ARM] 4437/1: PXA: move the GPIO IRQ initialization code to pxa_init_irq_gpio() [ARM] 4436/1: PXA: move low IRQ initialization code to pxa_init_irq_low() [ARM] 4435/1: PXA: remove PXA_INTERNAL_IRQS [ARM] 4434/1: PXA: remove PXA_IRQ_SKIP [ARM] pxa: Fix PXA27x suspend type validation, remove pxa_pm_prepare() [ARM] pxa: move pm_ops structure into CPU specific files [ARM] pxa: introduce cpu_is_pxaXXX macros [ARM] pxa: remove MMC register defines from pxa-regs.h ...
| * [ARM] pxa: remove MMC register defines from pxa-regs.hRussell King2007-07-12
| | | | | | | | | | | | | | pxamci.h redefines the MMC registers differently so they can be used with ioremap. Remove the incompatible definitions from pxa-regs.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | mmc: at91_mci: fix hanging and rework to match flowchartsNicolas Ferre2007-07-09
| | | | | | | | | | | | | | | | | | | | | | | | Fixes hanging using multi block operations (seen during CMD25). Follows closely the datasheet flowcharts. This piece of code handles better big file writing. I had to take care of the notbusy signal during write (at91_mci_handle_cmdrdy function) and to rearrange the AT91_MCI_ENDRX and AT91_MCI_RXBUFF flag usage. Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: at91_mci typoNicolas Ferre2007-07-09
| | | | | | | | | | | | | | | | Typo fix in at91_mci driver : standardized the typo (at91_mci everywhere) Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | sdhci: Fix "Unexpected interrupt" handlingRolf Eike Beer2007-07-09
| | | | | | | | | | | | | | | | | | Whenever a power interrupt is signaled it is also reported as an unexpected one. All other unexpected interrupts get lost. Cause is a not inversed bitmask to remove power interrupts from the status. Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: fix silly copy-and-paste errorPierre Ossman2007-07-09
| | | | | | | | Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: move layer init and workqueue to core filePierre Ossman2007-07-09
| | | | | | | | Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: refactor host class handlingPierre Ossman2007-07-09
| | | | | | | | | | | | Move basic host class device handling to its own file for clarity. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: refactor bus operationsPierre Ossman2007-07-09
| | | | | | | | | | | | | | | | Move bus operations to its own file for the sake of clarity. Also delegate sysfs attributes to bus handlers in preparation for other more exotic types. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | sdhci: add ene controller idMilko Krachounov2007-07-09
| | | | | | | | | | | | | | | | | | ENE has a very weird design where an SDHCI device (0805) is presented on the PCI bus, but that device is non-functional, and the real device is hidden as a more generic device. Signed-off-by: Milko Krachounov <milko@3mhz.net> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: bounce requests for simple hostsPierre Ossman2007-07-09
|/ | | | | | | | Some hosts cannot do scatter/gather in hardware. Since not doing sg is such a big performance hit, we (optionally) bounce the requests to a simple linear buffer that we hand over to the driver. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: get back read-only switch functionPierre Ossman2007-06-13
| | | | | | | Somehow the code to read the read-only switch of SD cards got lost in the reorganisation. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc-omap: fix sd response type 6 vs. 1Ragner Magalhaes2007-06-13
| | | | | | | | | Ignoring OMAP_MMC_STAT_CARD_ERR, treating it as if the command completed correctly. Signed-off-by: Ragner Magalhaes <ragner.magalhaes@indt.org.br> Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: don't call switch on old cardsPierre Ossman2007-06-07
| | | | | | | | Make sure we don't call the switch function on cards too old to support it. They should just ignore it, but some have been reported to lock up instead. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: fix broken if clausePierre Ossman2007-06-07
| | | | | | | | | Fix a broken if clause which was causing SD cards to go into 4-bit mode even if the host did not support it. (Reported by David Brownell and Marc Pignat) Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* au1xmmc: Replace C code with call to ARRAY_SIZE() macro.Robert P. J. Day2007-06-07
| | | | | Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc-atmel: remove linux/mmc/protocol.h dependenciesMarc Pignat2007-06-07
| | | | | | | | Fix compilation error by removing command decoding from at91_mci.c driver. Decoding commands in the host driver is the wrong way. Signed-off-by: Marc Pignat <marc.pignat@hevs.ch> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: clean up unused parts of block driverPierre Ossman2007-05-24
| | | | | | Remove dead code and unused structs from the block driver. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* pxamci: fix PXA27x MMC workaround for bad CRC with 136 bit responseNicolas Pitre2007-05-14
| | | | | | | ... and make it depend on the response flag instead of the command type. Signed-off-by: Nicolas Pitre <npitre@mvista.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: use assigned major for block devicePierre Ossman2007-05-14
| | | | | | | The MMC block devices now have an assigned major. Make sure we actually use it. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* sdhci: handle dma boundary interruptsPierre Ossman2007-05-14
| | | | | | | | When the device hits certain memory boundaries, it signals an interrupt and expects to be serviced. We don't need the feature but we need to make sure the device doesn't stall. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: au1xmmc command types check from data flagsYoichi Yuasa2007-05-14
| | | | | | | | | | This patch has changed command types check from data flags. MMC_STOP_TRANSMISSION is never passed to au1xmmc_send_command(). SEND_STOP() is used for MMC_STOP_TRANSMISSION. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* [S390] Kconfig: menus with depends on HAS_IOMEM.Martin Schwidefsky2007-05-10
| | | | | | | Add "depends on HAS_IOMEM" to a number of menus to make them disappear for s390 which does not have I/O memory. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* mmc build fixAndrew Morton2007-05-09
| | | | | | Cc: Pierre Ossman <drzeus@drzeus.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mmc: use lock instead of claim in debug checkPierre Ossman2007-05-08
| | | | | | | | As mmc_detect_change() can be called from irq context, using claim (which can sleep) is inherently unsafe. Use the host spinlock instead, which also is faster. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* mmc: Use menuconfig objectsJan Engelhardt2007-05-08
| | | | | | | | | Change 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> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* disable socket power in adapter driver instead of media oneAlex Dubov2007-05-08
| | | | | | | | | Socket power must be fully controlled by adapter driver. This also prevents unnecessary power-off of the socket when media driver is unloaded, yet media remains in the socket. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-05-06
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (82 commits) [ARM] Add comments marking in-use ptrace numbers [ARM] Move syscall saving out of the way of utrace [ARM] 4360/1: S3C24XX: regs-udc.h remove unused macro [ARM] 4358/1: S3C24XX: mach-qt2410.c: remove linux/mmc/protocol.h header [ARM] mm 10: allow memory type to be specified with ioremap [ARM] mm 9: add additional device memory types [ARM] mm 8: define mem_types table L1 bit 4 to be for ARMv6 [ARM] iop: add missing parens in macro [ARM] mm 7: remove duplicated __ioremap() prototypes ARM: OMAP: fix OMAP1 mpuio suspend/resume oops ARM: OMAP: MPUIO wake updates ARM: OMAP: speed up gpio irq handling ARM: OMAP: plat-omap changes for 2430 SDP ARM: OMAP: gpio object shrinkage, cleanup ARM: OMAP: /sys/kernel/debug/omap_gpio ARM: OMAP: Implement workaround for GPIO wakeup bug in OMAP2420 silicon ARM: OMAP: Enable 24xx GPIO autoidling [ARM] 4318/2: DSM-G600 Board Support [ARM] 4227/1: minor head.S fixups [ARM] 4328/1: Move i.MX UART regs to driver ...
| * [ARM] 4304/1: removes the unnecessary bit number from CKENnn_XXXXEric Miao2007-04-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the unnecessary bit number from CKENnn_XXXX definitions for PXA, so that CKEN0_PWM0 --> CKEN_PWM0 CKEN1_PWM1 --> CKEN_PWM1 ... CKEN24_CAMERA --> CKEN_CAMERA The reasons for the change of these defitions are: 1. they do not scale - they are currently valid for pxa2xx, but definitely not valid for pxa3xx, e.g., pxa3xx has bit 3 for camera instead of bit 24 2. they are unnecessary - the peripheral name within the definition has already announced its usage, we don't need those bit numbers to know which peripheral we are going to enable/disable clock for 3. they are inconvenient - think about this: a driver programmer for pxa has to remember which bit in the CKEN register to turn on/off Another change in the patch is to make the definitions equal to its clock bit index, so that #define CKEN_CAMERA (24) instead of #define CKEN_CAMERA (1 << 24) this change, however, will add a run-time bit shift operation in pxa_set_cken(), but the benefit of this change is that it scales when bit index exceeds 32, e.g., pxa3xx has two registers CKENA and CKENB, totally 64 bit for this, suppose CAMERA clock enabling bit is CKENB:10, one can simply define CKEN_CAMERA to be (32 + 10) and so that pxa_set_cken() need minimum change to adapt to that. Signed-off-by: eric miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | mmc-omap: Clean up omap set_ios and make MMC_POWER_ON workTony Lindgren2007-05-01
| | | | | | | | | | | | | | | | Move divisor calculation into a separate function and re-arrange the init order to make MMC_POWER_ON work. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc-omap: Fix omap to use MMC_POWER_ONTony Lindgren2007-05-01
| | | | | | | | | | | | | | | | | | As discussed earlier on LKML: http://lkml.org/lkml/2006/5/4/44 Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc-omap: add missing '\n'Arnaud Patard2007-05-01
| | | | | | | | | | | | | | | | | | This patch add a missing '\n' at the end of the 'cover is open' string in mmc_omap_switch_handler(). Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: make tifm_sd_set_dma_data() staticAdrian Bunk2007-05-01
| | | | | | | | | | | | | | This patch makes the needlessly global tifm_sd_set_dma_data() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: remove old card statesPierre Ossman2007-05-01
| | | | | | | | | | | | Remove card states that no longer make any sense. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: support unsafe resume of cardsPierre Ossman2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since many have the system root on MMC/SD we must allow some foot shooting when it comes to resume. We cannot detect if a card is removed and reinserted during suspend, so the safe approach would be to assume it was, avoiding potential filesystem corruption. This will of course not work if you cannot release the card before suspend. This commit adds a compile time option that makes the MMC layer assume the card wasn't touched if it is redetected upon resume. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: separate out reading EXT_CSDPierre Ossman2007-05-01
| | | | | | | | | | | | | | Separate the reading and decoding of the EXT_CSD register with the actions taken on it. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: break apart switch functionPierre Ossman2007-05-01
| | | | | | | | | | | | | | Break apart the SD switch function into one that reads the capabilities and one that acts on them. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | MMC: Fix handling of low-voltage cardsPhilip Langdale2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix handling of low voltage MMC cards. The latest MMC and SD specs both agree that support for low-voltage operations is indicated by bit 7 in the OCR. The MMC spec states that the low voltage range is 1.65-1.95V while the SD spec leaves the actual voltage range undefined - meaning that there is still no such thing as a low voltage SD card. However, an old Sandisk spec implied that bits 7.0 represented voltages below 2.0V in 1V or 0.5V increments, and the code was accordingly written with that expectation. This confusion meant that host drivers attempting to support the typical low voltage (1.8V) would set the wrong bits in the host OCR mask (usually bits 5 and/or 6) resulting in the the low voltage mode never being used. This change corrects the low voltage range and adds sanity checks on the reserved bits (0-6) and for SD cards that claim to support low-voltage operations. Signed-off-by: Philip Langdale <philipl@overt.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | MMC: Consolidate voltage definitionsPhilip Langdale2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Consolidate the list of available voltages. Up until now, a separate set of defines has been used for host->vdd than that used for the OCR voltage mask values. Having two sets of defines allows them to get out of sync and the current sets are already inconsistent with one claiming to describe ranges and the other specific voltages. Only the SDHCI driver uses the host->vdd defines and it is easily fixed to use the OCR defines. Signed-off-by: Philip Langdale <philipl@overt.org> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: add bus handlerPierre Ossman2007-05-01
| | | | | | | | | | | | | | | | | | | | | | Delegate protocol handling to "bus handlers". This allows the core to just handle the task of arbitrating the bus. Initialisation and pampering of cards is now done by the different bus handlers. This design also allows MMC and SD (and later SDIO) to be more cleanly separated, allowing easier maintenance. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | wbsd: check for data opcode earlierPierre Ossman2007-05-01
| | | | | | | | | | | | | | Move the check for supported data opcodes to the beginning of the request function to avoid wedging the card. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: Separate out protocol opsPierre Ossman2007-05-01
| | | | | | | | | | | | | | | | Move protocol operations and definitions into their own files in an effort to separate protocol handling and bus arbitration more clearly. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: Move core functions to subdirPierre Ossman2007-05-01
| | | | | | | | | | | | | | Create a "core" subdirectory to house the central bus handling functions. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: deprecate mmc bus topologyPierre Ossman2007-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The classic MMC bus was defined as multi card bus system, which is reflected in the design in the MMC layer. When SD showed up, the bus topology was abandoned and a star topology (one card per host) was mandated. MMC version 4 has followed this, officially deprecating the bus topology. As we do not have any known users of the bus topology we can remove support for it. This will simplify the code and rectify some incorrect assumptions in the newer additions. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: remove card upon suspendPierre Ossman2007-05-01
| | | | | | | | | | | | | | Suspending MMC/SD cards (versus removing and readding them) is an inherently unsafe operation and has even been broken for some time. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: allow suspended block driver to be removedPierre Ossman2007-05-01
| | | | | | | | | | | | | | | | Make sure we don't deadlock when removing a suspended block queue, something that might happen if the card is removed during suspend. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: Flush pending detects on host removalPierre Ossman2007-05-01
| | | | | | | | | | | | | | | | | | Make sure we kill of any pending detection runs when the host is removed instead of when it is freed. Also add some debugging to make sure the driver doesn't queue up more detection after it has removed the host. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | mmc: Move host and card drivers to subdirsPierre Ossman2007-05-01
| | | | | | | | | | | | | | Clean up the drivers/mmc directory by moving card and host drivers into subdirectories. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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