summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2007-10-17firewire: optimize fw_core_add_address_handlerStefan Richter
Potentially avoids unnecessary loop runs. Guarantee quadlet-aligned starts of address regions. Document the return values. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: ieee1394_core.c: use DEFINE_SPINLOCK for spinlock definitionMatthias Kaehlcke
drivers/ieee1394/ieee1394_core.c: Define spinlock using DEFINE_SPINLOCK instead of assignment to SPIN_LOCK_UNLOCKED Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: csr1212: proper refcountingStefan Richter
At least since nodemgr got rid of coarse global locking, accesses to struct csr1212_keyval's reference counter should be atomic and coupled with proper barriers. Also, calls to csr1212_keep_keyval(kv) should occur before kv is being used. (We probably should convert refcnt to struct kref, but how to keep csr1212_destroy_keyval's implementation non-recursively then?) Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: nodemgr: fix leak of struct csr1212_keyvalStefan Richter
csr1212_keep_keyval(kv) in nodemgr_process_root_directory was unbalanced if ne->vendor_name_kv already exists. This happens for example if eth1394 or raw1394 modify the local config ROM and it is parsed again. As a bonus, the attempt to add the vendor_name_kv sysfs attribute when it already exists is now fixed for good. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: pcilynx: I2C cleanupsJean Delvare
* Delete optional and empty i2c client_register and client_unregister callbacks. * Use the proper i2c adapter ID. * Don't use a template to initialize the i2c_adapter structure, it's inefficient. * Update a misleading comment on why we use i2c_transfer rather than higher level i2c functions. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: Fix kthread stopping in nodemgr_host_threadSatyam Sharma
The nodemgr host thread can exit on its own even when kthread_should_stop is not true, on receiving a signal (might never happen in practice, as it ignores signals). But considering kthread_stop() must not be mixed with kthreads that can exit on their own, I think changing the code like this is clearer. This change means the thread can cut its sleep short when receive a signal but looking at the code around, that sounds okay (and again, it might never actually recieve a signal in practice). Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: sbp2: fix unsafe iteration over list of devicesStefan Richter
sbp2_host_reset and sbp2_handle_status_write are not serialized against sbp2_alloc_device and sbp2_remove_device. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: pcilynx: superfluous local variablesStefan Richter
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: eth1394: fix lock imbalanceStefan Richter
bad_proto can be reached from points which did not take priv->lock. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16ieee1394: eth1394: superfluous local variableStefan Richter
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-10-16x86: fix boot error introduced by kbuildSam Ravnborg
x86 uses target specific assignment of EXTRA_AFLAGS, EXTRA_CFLAGS - this caused troubles with introducing asflags-y, ccflags-y. Fixed the target specific assignments in arch/x86/boot/Makefile and auditted the rest of the kernel for similar usage. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-10-16amd74xx: remove /proc/ide/amd74xxBartlomiej Zolnierkiewicz
This belongs to user-space (and only if really needed). text data bss dec hex filename 6723 2000 28 8751 222f drivers/ide/pci/amd74xx.o.before 3833 2000 16 5849 16d9 drivers/ide/pci/amd74xx.o.after Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16amd74xx/via82cxxx: don't initialize drive->dnBartlomiej Zolnierkiewicz
drive->dn is initialized by ide-probe.c::probe_hwif() so no need to do it in ->init_hwif method. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16sis5513: remove /proc/ide/sisBartlomiej Zolnierkiewicz
This belongs to user-space (and only if really needed). text data bss dec hex filename 7129 404 8 7541 1d75 drivers/ide/pci/sis5513.o.before 3916 404 1 4321 10e1 drivers/ide/pci/sis5513.o.after Additionaly to being bloat the code contained two bugs: - wrong cable bit was checked (0x0001 instead of 0x8000) on ATA_133 chipsets - incorrect UDMA cycle time was reported on ATA_100a/ATA_133 chipsets Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove CONFIG_IDEDMA_ONLYDISKBartlomiej Zolnierkiewicz
ATAPI devices with broken DMA support should be handled by DMA blacklist and for debugging purposes we have new shiny "hdx=nodma" kernel paremeter. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: add "hdx=nodma" kernel parameterBartlomiej Zolnierkiewicz
* Add "hdx=nodma" option allowing user to disallow DMA for a given device. * Obsolete "ide=nodma" option. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove hwif->autodma and drive->autodmaBartlomiej Zolnierkiewicz
* hpt34x.c: disable DMA masks for HPT345 (hwif->autodma is zero so DMA won't be enabled anyway). * trm290.c: disable IDE_HFLAG_TRUST_BIOS_FOR_DMA flag (hwif->autodma is zero so DMA won't be enabled anyway). * Check noautodma global variable instead of drive->autodma in ide_tune_dma(). This fixes handling of "ide=nodma" kernel parameter for icside, ide-cris, au1xxx-ide, pmac, it821x, jmicron, sgiioc4 and siimage host drivers. * Remove hwif->autodma (it was not checked by IDE core code anyway) and drive->autodma (was set by all host drivers - except HPT345/TRM290 special cases - unless "ide=nodma" was used). While at it: - remove needless printk() from icside.c - remove stale FIXME/comment from ide-probe.c - don't force DMA off if PCI bus-mastering had to be enabled in setup-pci.c (this setting was always later over-ridden by host drivers anyway) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove "idex=dma" kernel parameterBartlomiej Zolnierkiewicz
It has been obsoleted since 1 Nov 2004, is valid only when used together with "ide=nodma" kernel parameter (which makes no sense) and only for aec62xx, cmd64x, cs5220, generic, hpt366, sl82c105, tc86c001 and triflex host drivers. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove CONFIG_BLK_DEV_IDEDMA_FORCEDBartlomiej Zolnierkiewicz
This code doesn't use pci_assign_resource() and ide_get_or_set_dma_base() uses pci_resource_start() to get DMA base address so it has no chance of working. Moreover this belongs to PCI quirks (in case somebody would like to fix it). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: use PCI_VDEVICE() macroBartlomiej Zolnierkiewicz
While at it: - make struct pci_device_id tables const - use PCI_DEVICE_ID_ITE_8213 define in it8213.c - fix comment in generic.c Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16sis5513: clear prefetch and postwrite for ATAPI devicesBartlomiej Zolnierkiewicz
Clear prefetch and postwrite for ATAPI devices instead of depending on BIOS. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16it8213/piix/slc90e66: "de-couple" PIO and UDMA modesBartlomiej Zolnierkiewicz
Don't force PIO4 when programming UDMA mode (suggested by Sergei). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: unexport noautodmaAdrian Bunk
noautodma can now be unexported. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: unexport ide_tune_dmaAdrian Bunk
static code mustn't be exported. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove ->ide_dma_check (take 2)Bartlomiej Zolnierkiewicz
* Add IDE_HFLAG_TRUST_BIOS_FOR_DMA host flag for host drivers that depend on BIOS for programming device/controller for DMA. Set it in cy82c693, generic, ns87415, opti621 and trm290 host drivers. * Add IDE_HFLAG_VDMA host flag for host drivers using VDMA. Set it in cs5520 host driver. * Teach ide_tune_dma() about IDE_HFLAG_TRUST_BIOS_FOR_DMA flag. * Add generic ide_dma_check() helper and remove all open coded ->ide_dma_check implementations. Fix all places checking for presence of ->ide_dma_check hook to check for ->ide_dma_on instead. * Remove no longer needed code from config_drive_for_dma(). * Make ide_tune_dma() static. v2: * Fix config_drive_for_dma() return values. * Fix ide-dma.c build for CONFIG_BLK_DEV_IDEDMA_PCI=n by adding dummy config_drive_for_dma() inline. * Fix IDE_HFLAG_TRUST_BIOS_FOR_DMA handling in ide_dma_check(). * Fix init_hwif_it8213() comment. There should be no functionality changes caused by this patch. Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide-pmac: add PIO autotune fallback to ->ide_dma_checkBartlomiej Zolnierkiewicz
Since ide-pmac allows separate PIO and DMA timings, and ide-pmac always sets ->autotune this change shouldn't have any other effect than bringing ide-pmac driver in-line with other host drivers wrt ->ide_dma_check implementation. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide-cris: add PIO autotune fallback to ->ide_dma_checkBartlomiej Zolnierkiewicz
Since ide-cris allows separate PIO and DMA timings, and ide-cris always sets ->autotune this change shouldn't have any other effect than bringing ide-cris driver in-line with other host drivers wrt ->ide_dma_check implementation. Cc: Mikael Starvik <starvik@axis.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16sl82c105: add PIO autotune fallback to ->ide_dma_checkBartlomiej Zolnierkiewicz
Since sl82c105 re-programs DMA/PIO timings for DMA enable/disable, and sets ->autotune this change shouldn't have any other effect than bringing sl82c105 driver in-line with other host drivers wrt ->ide_dma_check implementation. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16cs5530/sc1200: add PIO autotune fallback to ->ide_dma_checkBartlomiej Zolnierkiewicz
* Add PIO autotune fallback to ->ide_dma_check. Since cs5530/sc1200 allow separate PIO and DMA timings, and cs5530/sc1200 always set ->autotune this change shouldn't have any other effect than bringing these drivers in-line with other host drivers wrt ->ide_dma_check implementations. * Fix ->ide_dma_check to return "-1" if DMA cannot be set. * Bump driver version. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove ide_use_fast_pio()Bartlomiej Zolnierkiewicz
Remove ide_use_fast_pio() and just re-tune PIO unconditionally if DMA tuning has failed in ->ide_dma_check. All host drivers using ide_use_fast_pio() set drive->autotune so PIO is always tuned anyway and in some cases we _really_ need to re-tune PIO because PIO and DMA timings are shared. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: remove drive->init_speed zeroingBartlomiej Zolnierkiewicz
Several host drivers used to reset drive->init_speed in their ->ide_dma_check implementations which resulted in incorrect init speed being reported to the user, fix it. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16au1xxx-ide: use ide_tune_dma()Bartlomiej Zolnierkiewicz
* Remove needless setting of drive->using_dma from auide_dma_check(). * Split off auide_mdma_filter() from auide_dma_check(). * Use ide_tune_dma() in auide_dma_check(), this fixes following issues: - device's DMA capability bit not being checked - device not being checked against generic DMA blacklist - transfer mode not being set on device/host * Add PIO autotune fallback to auide_dma_check(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16it8213/piix/slc90e66: remove {it8213,piix,slc90e66}_dma_2_pio()Bartlomiej Zolnierkiewicz
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16atiixp: DMA setup fixesBartlomiej Zolnierkiewicz
* Fix handling of unsupported/invalid modes in atiixp_set_dma_mode(). * ATI controllers allow separate PIO and DMA timings so remove programming of PIO modes from atiixp_set_dma_mode(). Also remove no longer needed atiixp_dma_2_pio() helper. * SWDMA timings are not programmed by atiixp_set_dma_mode() and if SWDMA mode is chosen atiixp_dma_host_on() erroneously enables UDMA, just disable support for SWDMA modes for now. * Enable support for MWDMA0 mode. * Bump driver version. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16sc1200: always tune PIOBartlomiej Zolnierkiewicz
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16cs5530: always tune PIOBartlomiej Zolnierkiewicz
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide-cris: always tune PIOBartlomiej Zolnierkiewicz
Acked-by: Mikael Starvik <starvik@axis.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16slc90e66: always tune PIOBartlomiej Zolnierkiewicz
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16aec62xx: always tune PIOBartlomiej Zolnierkiewicz
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16sis5513: always tune PIOBartlomiej Zolnierkiewicz
* Always set ->autotune in init_hwif_sis5513(), this means practically no change in behavior since PIO was always tuned in ->ide_dma_check and >autotune was always set for ->dma_base == 0 case. * Bump driver version. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16sis5513: DMA setup fixesBartlomiej Zolnierkiewicz
* Add sis_ata133_get_base() helper function for obtaining the address of the drive control registers on chipset_family == ATA_133 chipsets. * Add three helper functions for programming PIO/MWDMA timings: - sis_ata16_program_timings() (for ATA_16/33/66/100a chipset families) - sis_ata100_program_timings() (for ATA_100/133a chipset families) - sis_ata133_program_timings() (for ATA_133 chipset family) MWDMA timings are taken from datasheets and they match ATA spec. * Add generic helper function sis_program_timings() and use it in ->set_pio_mode and ->set_dma_mode methods (previously the driver depended on BIOS to program the correct MWDMA timings). * Remove redundant !chipset_family check from init_hwif_sis5513() (init_chipset_sis5513() guarantees that we will never get here if chipset_family cannot be determined). * SWDMA seems to be unsupported by SiS chipsets (no info about SWDMA in datasheets and for SWDMA0 mode timing requirements are impossible to fulfill) so remove ->swdma_mask from init_hwif_sis5513() and handling of SWDMA modes from sis_set_dma_mode(). * Enable DMA support for chipset_family == ATA_16. * Bump driver version. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16hpt366: always tune PIOBartlomiej Zolnierkiewicz
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide-cs: Add additional id string (corsair, 1GB)Kristoffer Ericson
This patch adds id strings for Corsair 1GB (identified as Hyperstone Model1) inside legacy/ide-cs.c. It also includes some minor whitespace cleanups. Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16ide: fix serverworks.c UDMA regressionTony Battersby
The patch described by the following excerpt from ChangeLog-2.6.22 makes it impossible to use UDMA on a Tyan S2707 motherboard (SvrWks CSB5): commit 2d5eaa6dd744a641e75503232a01f52d0768884c Author: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Date: Thu May 10 00:01:08 2007 +0200 ide: rework the code for selecting the best DMA transfer mode (v3) ... This one-line patch against 2.6.23 fixes the problem. Signed-off-by: Tony Battersby <tonyb@cybernetics.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-16[IA64] Fix build for CONFIG_SMP=nTony Luck
d5a7430ddcdb598261d70f7eb1bf450b5be52085 missed a spot where we use cpu_sibling_map and cpu_core_map. These don't exist on a uni-processor build. Wrap #ifdef CONFIG_SMP ... #endif around it. Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-10-16Update PowerPC vmemmap code for 1TB segmentsAnton Blanchard
htab_bolt_mapping takes another argument now the 1TB code has been merged. Update vmemmap_populate to match. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16Fix powerpc breakage in sg chaining codeAnton Blanchard
Commit 78bdc3106a877cfa50439fa66b52acbc4e7868df ("PPC: sg chaining support") looks to have removed some unrelated ppc code. Lets put it back in. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits) kbuild: introduce ccflags-y, asflags-y and ldflags-y kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP kbuild: enable use of AFLAGS and CFLAGS on commandline kbuild: enable 'make AFLAGS=...' to add additional options to AS kbuild: fix AFLAGS use in h8300 and m68knommu kbuild: check for wrong use of CFLAGS kbuild: enable 'make CFLAGS=...' to add additional options to CC kbuild: fix up CFLAGS usage kbuild: make modpost detect unterminated device id lists kbuild: call export_report from the Makefile kbuild: move Kai Germaschewski to CREDITS kconfig/menuconfig: distinguish between selected-by-another options and comments kconfig: tristate choices with mixed tristate and boolean values include/linux/Kbuild: remove duplicate entries kbuild: kill backward compatibility checks kbuild: kill EXTRA_ARFLAGS kbuild: fix documentation in makefiles.txt kbuild: call make once for all targets when O=.. is used kbuild: pass -g to assembler under CONFIG_DEBUG_INFO kbuild: update _shipped files for kconfig syntax cleanup ... Fix up conflicts in arch/um/sys-{x86_64,i386}/Makefile manually.
2007-10-16Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Increase cp0 compare clockevent min_delta_ns from 0x30 to 0x300. [MIPS] Cache: Provide more information on cache policy on bootup. [MIPS] Fix aliasing bug in copy_user_highpage, take 2. [MIPS] VPE loader: convert from struct class_ device to struct device [MIPS] MIPSsim: Fix booting from NFS root [MIPS] Alchemy: Get rid of au1xxx_irq_map_t. [MIPS] Alchemy: Get rid of au_ffz(). [MIPS] Alchemy: Get rid of au_ffs(). [MIPS] Alchemy: cleanup interrupt code. [MIPS] Lasat: Fix build by conversion to irq_cpu.c. [MIPS] Lasat: Add #ifndef ... #endif include warpper to lasatint.h. [MIPS] IP22: Enable -Werror. [MIPS] IP22: Fix warning. [MIPS] IP22: Complain if requesting the front panel irq failed. [MIPS] vmlinux.lds.S: Handle KPROBES_TEXT. [MIPS] vmlinux.lds.S: Fix handling of .notes in final link. [MIPS] vmlinux.lds.S: Remove duplicate comment. [MIPS] MSP71XX: Add workarounds file. [MIPS] IP32: Fix build by conversion to irq_cpu.c.
2007-10-16[MIPS] Increase cp0 compare clockevent min_delta_ns from 0x30 to 0x300.Ralf Baechle
Extremly low values are of dubious usefulness anyway but in this case they actually were killing Qemu which simply wasn't able to complete mips_next_event() within 0x30 100MHz cycles even on fast hosts. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>