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* [S390] tty3270: fix put_char fail/success conversion.Heiko Carstens2008-05-07
| | | | | | | | | | | | | The wrong function got coverted ;) CC drivers/s390/char/tty3270.o drivers/s390/char/tty3270.c:1747: warning: initialization from incompatible pointer type Acked-by: Alan Cox <alan@redhat.com> Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] compat ptrace cleanupRoland McGrath2008-05-07
| | | | | | | | | | This removes redundant arch code for generic ptrace requests already handled by ptrace_request and compat_ptrace_request. It simplifies things to just have the standard entry points, and use the generic compat_sys_ptrace. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] s390mach compile warningMartin Schwidefsky2008-05-07
| | | | | | | | | Fix the following compile warning: drivers/s390/s390mach.c: In function 's390_collect_crw_info': drivers/s390/s390mach.c:77: warning: ignoring return value of 'down_interruptibl Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Fix parsing mechanism for blacklisted devices.Michael Ernst2008-05-07
| | | | | | | New format cssid.ssid.devno is now parsed correctly. Signed-off-by: Michael Ernst <mernst@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Remove cio_msg kernel parameter.Michael Ernst2008-05-07
| | | | | | | | | The only sporadically used CIO_DEBUG messages are replaced by ordinary CIO_MSG_EVENT messages. The CIO_MSG_EVENT messages debug levels are consolidated. Signed-off-by: Michael Ernst <mernst@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] s390-kvm: leave sie context on work. Removes preemption requirementChristian Borntraeger2008-05-07
| | | | | | | | | | | | | | | | | | | | | | | | | | From: Martin Schwidefsky <schwidefsky@de.ibm.com> This patch fixes a bug with cpu bound guest on kvm-s390. Sometimes it was impossible to deliver a signal to a spinning guest. We used preemption as a circumvention. The preemption notifiers called vcpu_load, which checked for pending signals and triggered a host intercept. But even with preemption, a sigkill was not delivered immediately. This patch changes the low level host interrupt handler to check for the SIE instruction, if TIF_WORK is set. In that case we change the instruction pointer of the return PSW to rerun the vcpu_run loop. The kvm code sees an intercept reason 0 if that happens. This patch adds accounting for these types of intercept as well. The advantages: - works with and without preemption - signals are delivered immediately - much better host latencies without preemption Acked-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] s390: Optimize user and work TIF checkMartin Schwidefsky2008-05-07
| | | | | | | | | | | | On return from syscall or interrupt, we have to check if we return to userspace (likely) and if there is work todo (less likely) to decide if we handle the work. We can optimize this check: we first check for the less likely work case and then check for userspace. This patch is also a preparation for an additional patch, that fixes a bug in KVM dealing with cpu bound guests. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Revert "uml: fix gcc problem"Linus Torvalds2008-05-06
| | | | | | | | | | | | | | | | This reverts commit 22eecde2f9034764a3fd095eecfa3adfb8ec9a98. Uli reports that it breaks UML on x86-64 with the Fedora 8 gcc (gcc 4.1.2), causing a crash on startup. See http://marc.info/?l=linux-kernel&m=121011722806093&w=2 for a trace. Reported-by: Ulrich Drepper <drepper@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix bogus warning in sysdev_driver_register()OGAWA Hirofumi2008-05-06
| | | | | | | | | | | | | if ((drv->entry.next != drv->entry.prev) || (drv->entry.next != NULL)) { warns list_empty(&drv->entry). Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Greg KH <gregkh@suse.de> Cc: Len Brown <lenb@kernel.org> [ Version 2 totally redone based on suggestions from Linus & Greg ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* VFS: fix unused variable warningLinus Torvalds2008-05-06
| | | | | | | | | | Commit 33dcdac2df54e66c447ae03f58c95c7251aa5649 ("kill ->put_inode") removed the final use of i_op->put_inode, but left the now totally unused "op" variable in iput(). Get rid of it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: fix PAE pmd_bad bootup warningHugh Dickins2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix warning from pmd_bad() at bootup on a HIGHMEM64G HIGHPTE x86_32. That came from 9fc34113f6880b215cbea4e7017fc818700384c2 x86: debug pmd_bad(); but we understand now that the typecasting was wrong for PAE in the previous version: pagetable pages above 4GB looked bad and stopped Arjan from booting. And revert that cded932b75ab0a5f9181ee3da34a0a488d1a14fd x86: fix pmd_bad and pud_bad to support huge pages. It was the wrong way round: we shouldn't weaken every pmd_bad and pud_bad check to let huge pages slip through - in part they check that we _don't_ have a huge page where it's not expected. Put the x86 pmd_bad() and pud_bad() definitions back to what they have long been: they can be improved (x86_32 should use PTE_MASK, to stop PAE thinking junk in the upper word is good; and x86_64 should follow x86_32's stricter comparison, to stop thinking any subset of required bits is good); but that should be a later patch. Fix Hans' good observation that follow_page() will never find pmd_huge() because that would have already failed the pmd_bad test: test pmd_huge in between the pmd_none and pmd_bad tests. Tighten x86's pmd_huge() check? No, once it's a hugepage entry, it can get quite far from a good pmd: for example, PROT_NONE leaves it with only ACCESSED of the KERN_PGTABLE bits. However... though follow_page() contains this and another test for huge pages, so it's nice to keep it working on them, where does it actually get called on a huge page? get_user_pages() checks is_vm_hugetlb_page(vma) to to call alternative hugetlb processing, as does unmap_vmas() and others. Signed-off-by: Hugh Dickins <hugh@veritas.com> Earlier-version-tested-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jeff Chua <jeff.chua.linux@gmail.com> Cc: Hans Rosenfeld <hans.rosenfeld@amd.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-05-06
|\ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: [PATCH] fix SMP ordering hole in fcntl_setlk() [PATCH] kill ->put_inode [PATCH] fix reservation discarding in affs
| * [PATCH] fix SMP ordering hole in fcntl_setlk()Al Viro2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fcntl_setlk()/close() race prevention has a subtle hole - we need to make sure that if we *do* have an fcntl/close race on SMP box, the access to descriptor table and inode->i_flock won't get reordered. As it is, we get STORE inode->i_flock, LOAD descriptor table entry vs. STORE descriptor table entry, LOAD inode->i_flock with not a single lock in common on both sides. We do have BKL around the first STORE, but check in locks_remove_posix() is outside of BKL and for a good reason - we don't want BKL on common path of close(2). Solution is to hold ->file_lock around fcheck() in there; that orders us wrt removal from descriptor table that preceded locks_remove_posix() on close path and we either come first (in which case eviction will be handled by the close side) or we'll see the effect of close and do eviction ourselves. Note that even though it's read-only access, we do need ->file_lock here - rcu_read_lock() won't be enough to order the things. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] kill ->put_inodeChristoph Hellwig2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | And with that last patch to affs killing the last put_inode instance we can finally, after many years of transition kill this racy and awkward interface. (It's kinda funny that even the description in Documentation/filesystems/vfs.txt was entirely wrong..) Also remove a very misleading comment above the defintion of struct super_operations. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] fix reservation discarding in affsRoman Zippel2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - remove affs_put_inode, so preallocations aren't discared unnecessarily often. - remove affs_drop_inode, it's called with a spinlock held, so it can't use a mutex. - make i_opencnt atomic - avoid direct b_count manipulations - a few allocation failure fixes, so that these are more gracefully handled now. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2008-05-06
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (27 commits) pata_atiixp: Don't disable sata_inic162x: update intro comment, up the version and drop EXPERIMENTAL sata_inic162x: add cardbus support sata_inic162x: kill now unused SFF related stuff sata_inic162x: use IDMA for ATAPI commands sata_inic162x: use IDMA for non DMA ATA commands sata_inic162x: kill now unused bmdma related stuff sata_inic162x: use IDMA for ATA_PROT_DMA sata_inic162x: update TF read handling sata_inic162x: add / update constants sata_inic162x: misc clean ups sata_mv use hweight16() for bit counting (V2) sata_mv NCQ-EH for FIS-based switching sata_mv delayed eh handling libata: export ata_eh_analyze_ncq_error sata_mv new mv_port_intr function sata_mv fix mv_host_intr bug for hc_irq_cause sata_mv NCQ and SError fixes for mv_err_intr sata_mv rearrange mv_config_fbs sata_mv errata workaround for sata25 part 1 ...
| * | pata_atiixp: Don't disableAlan Cox2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A couple of distributions (Fedora, Ubuntu) were having weird problems with the ATI IXP series PATA controllers being reported as simplex. At the heart of the problem is that both distros ignored the recommendations to load pata_acpi and ata_generic *AFTER* specific host drivers. The underlying cause however is that if you D3 and then D0 an ATI IXP it helpfully throws away some configuration and won't let you rewrite it. Add checks to ata_generic and pata_acpi to pin ATIIXP devices. Possibly the real answer here is to quirk them and pin them, but right now we can't do that before they've been pcim_enable()'d by a driver. I'm indebted to David Gero for this. His bug report not only reported the problem but identified the cause correctly and he had tested the right values to prove what was going on [If you backport this for 2.6.24 you will need to pull in the 2.6.25 removal of the bogus WARN_ON() in pcim_enagle] Signed-off-by: Alan Cox <alan@redhat.com> Tested-by: David Gero <davidg@havidave.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: update intro comment, up the version and drop EXPERIMENTALTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | sata_inic162x is now ready for production use. Bump the version, explain what's working and what's not and drop EXPERIMENTAL. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: add cardbus supportTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | When attached to cardbus, mmio region is at BAR 1. Other than that, everything else is the same. Add support for it. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: kill now unused SFF related stuffTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sata_inic162x now doesn't use any SFF features. Remove all SFF related stuff. * Mask unsolicited ATA interrupts. This removes our primary source of spurious interrupts and spurious interrupt handling can be tightened up. There's no need to clear ATA interrupts by reading status register either. * Don't dance with IDMA_CTL_ATA_NIEN and simplify accesses to IDMA_CTL. * Inherit from sata_port_ops instead of ata_sff_port_ops. * Don't initialize or use ioaddr. There's no need to map BAR0-4 anymore. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: use IDMA for ATAPI commandsTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use IDMA for ATAPI commands. Write and some misc commands time out when executed using ATAPI_PROT_DMA but ATAPI_PROT_PIO works fine. As PIO is driven by DMA too, it doesn't make any noticeable difference for native SATA devices. inic_check_atapi_dma() is implemented to force PIO for those ATAPI commands. After this change, sata_inic162x issues all commands using IDMA. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: use IDMA for non DMA ATA commandsTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use IDMA for PIO and non-data commands. This allows sata_inic162x to safely drive LBA48 devices. Kill inic_dev_config() which contains code to reject LBA48 devices. With this change, status checking in inic_qc_issue() to avoid hard lock up after hotplug can go away too. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: kill now unused bmdma related stuffTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sata_inic162x doesn't use BMDMA anymore. Kill bmdma related stuff. * prdctl manipulation * port IRQ mask manipulation * inherit ATA_BASE_SHT instead of ATA_BMDMA_SHT * BMDMA methods Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: use IDMA for ATA_PROT_DMATejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The modified driver on initio site has enough clue on how to use IDMA. Use IDMA for ATA_PROT_DMA. * LBA48 now works as long as it uses DMA (LBA48 devices still aren't allowed as it can destroy data if PIO is used for any reason). * No need to mask IRQs for read DMAs as IDMA_DONE is properly raised after transfer to memory is actually completed. There will be some spurious interrupts but host_intr will handle it correctly and manipulating port IRQ mask interacts badly with the other port for some reason, so command type dependent port IRQ masking is not used anymore. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: update TF read handlingTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | inic162x can't reliably read back TF or at least we don't know how to do it yet. The only values which seem reliable are status and error. This patch updates access to TF. * implement inic_tf_read() which reads the TF area in mmio area * implement custom inic_qc_fill_rtf() which only returns true if status indicates device error. it'll be returning bogus addresses for device errors but it'll be able to report why it failed at least. * implement custom inic_check_ready() and use ata_wait_after_reset() instead of the SFF version. * use inic_tf_read() for classification. This is not perfect but it fixes hotplug detection failure and at least makes the driver report 0's instead of random garbages while reporting valid status and error for device errors. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: add / update constantsTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * add a bunch of constants, most are from the datasheet, a few undocumented ones are from initio's modified driver * HCTL_PWRDWN is bit 12 not 13 This is in preparation of further inic162x updates. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_inic162x: misc clean upsTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * use larger indents for structure member definitions * kill unused variable @addr in inic_scr_write() * kill unnecessary flushes in inic_freeze/thaw() * kill buggy explicit kfree() on devres managed port private data This is in preparation of further inic162x updates. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv use hweight16() for bit counting (V2)Mark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some tidying as suggested by Grant Grundler. Nuke local bit-counting function from sata_mv in favour of using hweight16(). Also add a short explanation for the 15msec timeout used when waiting for empty/idle. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv NCQ-EH for FIS-based switchingMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert sata_mv's EH for FIS-based switching (FBS) over to the sequence recommended by Marvell. This enables us to catch/analyze multiple failed links on a port-multiplier when using NCQ. To do this, we clear the ERR_DEV bit in the EDMA Halt-Conditions register, so that the EDMA engine doesn't self-disable on the first NCQ error. Our EH code sets the MV_PP_FLAG_DELAYED_EH flag to prevent new commands being queued while we await completion of all outstanding NCQ commands on all links of the failed PM. The SATA Test Control register tells us which links have failed, so we must only wait for any other active links to finish up before we stop the EDMA and run the .error_handler afterward. The patch also includes skeleton code for handling of non-NCQ FBS operation. This is more for documentation purposes right now, as that mode is not yet enabled in sata_mv. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv delayed eh handlingMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a new "delayed error handling" mechanism in sata_mv, to enable us to eventually deal with multiple simultaneous NCQ failures on a single host link when a PM is present. This involves a port flag (MV_PP_FLAG_DELAYED_EH) to prevent new commands being queued, and a pmp bitmap to indicate which pmp links had NCQ errors. The new mv_pmp_error_handler() uses those values to invoke ata_eh_analyze_ncq_error() on each failed link, prior to freezing the port and passing control to sata_pmp_error_handler(). This is based upon a strategy suggested by Tejun. For now, we just implement the delayed mechanism. The next patch in this series will add the multiple-NCQ EH code to take advantage of it. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | libata: export ata_eh_analyze_ncq_errorMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | Export ata_eh_analyze_ncq_error() for subsequent use by sata_mv, as suggested by Tejun. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv new mv_port_intr functionMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Separate out the inner loop body of mv_host_intr() into it's own function called mv_port_intr(). This should help maintainabilty. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv fix mv_host_intr bug for hc_irq_causeMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | Remove the unwanted reads of hc_irq_cause from mv_host_intr(), thereby removing a bug whereby we were not always reading it when needed.. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv NCQ and SError fixes for mv_err_intrMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sigh. Undo some earlier changes to mv_port_intr(), so that we now read/clear SError again in all cases. Arrange the top of the function to be as close as possible to what we need for a later update (in this series) for ERR_DEV handling. Fix things so that libata-eh can attempt a READ_LOG_EXT_10H in response to a failed NCQ command, by just doing a local mv_eh_freeze() rather than ata_port_freeze(). This will now fully handle NCQ errors much of the time, but more fixes are needed for FBS/PMP, and for certain chip errata. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv rearrange mv_config_fbsMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rearrange mv_config_fbs() to more closely follow the (corrected) datasheet recommendations for NCQ and FIS-based switching (FBS). Also, maintain a port flag to let us know when FBS is enabled. We will make more use of that flag later in this patch series. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv errata workaround for sata25 part 1Mark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Part 1 of workaround for errata "sata#25" for the 60x1 series (the second half of this errata workaround is still in development. Bit22 of the GPIO port has to be set "on" when in NCQ mode. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv new mv_qc_defer methodMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The EDMA engine cannot tolerate a mix of NCQ/non-NCQ commands, and cannot be used for PIO at all. So we need to prevent libata from trying to feed us such mixtures. Introduce mv_qc_defer() for this purpose, and use it for all chip versions. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv wait for empty+idleMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When performing EH, it is recommended to wait for the EDMA engine to empty out requests-in-progress before disabling EDMA. Introduce code to poll the EDMA_STATUS register for idle/empty bits before disabling EDMA. For non-EH operation, this will normally exit without delay, other than the register read. A later series of patches may focus on eliminating this and various other register reads (when possible) throughout the driver, but for now we're focussing on solid reliablity. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv pci featuresMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the GenIIe EDMA optimizations should not be used for non-PCI (SOC) devices, and nor for certain configurations of conventional PCI (non PCI-X, PCIe) buses. Logic taken/simplified from that in the Marvell proprietary driver. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | sata_mv more cosmetic changesMark Lord2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More cosmetic changes; no code changes. -- try and improve consistency of naming. -- add missing _OFS to tails of register offset definitions. -- rename mv_setup_ifctl() to mv_setup_ifcfg(), since that's what it really does. -- remove/move some dead comments Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | libata: Add Intel SCH PATA driverAlek Du2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds Intel SCH chipsets (AF82US15W, AF82US15L, AF82UL11L) PATA controller support. Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | ata_piix: verify SIDPR access before enabling itTejun Heo2008-05-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On certain configurations (certain macbooks), even though all the conditions for SIDPR access described in the datasheet are met, actually reading those registers just returns 0 and have no effect on write. Verify SIDPR is actually working before enabling it. This is reported by Ryan Roth in bz#10512. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Ryan Roth <ryan.roth@ch2m.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| * | libata: improve post-reset device ready testTejun Heo2008-05-06
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some controllers (jmb and inic162x) use 0x77 and 0x7f to indicate that the device isn't ready yet. It looks like they use 0xff if device presence is detected but connection isn't established. 0x77 or 0x7f after connection is established and use the value from signature FIS after receiving it. This patch implements ata_check_ready(), which takes TF status value and determines whether the port is ready or not considering the above and other conditions, and use it in @check_ready() functions. This is safe as both 0x77 and 0x7f aren't valid ready status value even though they have BSY bit cleared. This fixes hot plug detection failures which can be triggered with certain drives if they aren't already spun up when the data connector is hot plugged. Tested on sil, sil24, ahci (jmb/ich), piix and inic162x combined with eight drives from all major vendors. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2008-05-06
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net_cls_act: act_simple dont ignore realloc code iwlwifi: make IWLWIFI a tristate Revert "atm: Do not free already unregistered net device." dccp: return -EINVAL on invalid feature length irda: fix !PNP support for drivers/net/irda/smsc-ircc2.c irda: fix !PNP support in drivers/net/irda/nsc-ircc.c net_cls_act: Make act_simple use of netlink policy. ip: Use inline function dst_metric() instead of direct access to dst->metric[] ip: Make use of the inline function dst_metric_locked() atm: Bad locking on br2684_devs modifications. atm: Do not free already unregistered net device. mac80211: Do not free net device after it is unregistered. bridge: Consolidate error paths in br_add_bridge(). bridge: Net device leak in br_add_bridge(). niu: Fix probing regression for maramba on-board chips. lapbeth: Release ->ethdev when unregistering device. xfrm: convert empty xfrm_audit_* macros to functions net: Fix useless comment reference loop. sch_htb: remove from event queue in htb_parent_to_leaf()
| * net_cls_act: act_simple dont ignore realloc codeJamal Hadi Salim2008-05-06
| | | | | | | | | | | | | | | | reallocation of the policy data was being ignored. It could fail. Simplify so that there is no need for reallocating. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
| * iwlwifi: make IWLWIFI a tristateAdrian Bunk2008-05-06
| | | | | | | | | | | | | | | | | | | | | | IWLWIFI should be a tristate so that if IWLCORE and/or IWL3945 are m and none of them is y kbuild doesn't create an empty drivers/net/wireless/built-in.o This patch also removes the pointless "default n". Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Revert "atm: Do not free already unregistered net device."David S. Miller2008-05-06
| | | | | | | | | | | | | | | | | | | | This reverts commit 65e4113684e50cee75357ce10dc9026b0929e4e9. Unlike the other cases Pavel fixed, this case did not setup a netdev->destructor of free_netdev, therefore this change was not correct. Signed-off-by: David S. Miller <davem@davemloft.net>
| * dccp: return -EINVAL on invalid feature lengthChris Wright2008-05-05
| | | | | | | | | | | | | | | | | | | | dccp_feat_change() validates length and on error is returning 1. This happens to work since call chain is checking for 0 == success, but this is returned to userspace, so make it a real error value. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * irda: fix !PNP support for drivers/net/irda/smsc-ircc2.cIngo Molnar2008-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86.git testing found this build bug on v2.6.26-rc1: ERROR: "pnp_get_resource" [drivers/net/irda/smsc-ircc2.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 the driver did not anticipate the case of !CONFIG_PNP which is rare but still possible. Instead of restricting the driver to PNP-only in the Kconfig space, add the (trivial) dummy struct pnp_driver - this is that other drivers use in the !PNP case too. The driver itself can in theory be initialized on !PNP too in certain cases, via smsc_ircc_legacy_probe(). Patch only minimally build tested, i dont have this hardware. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David S. Miller <davem@davemloft.net>
| * irda: fix !PNP support in drivers/net/irda/nsc-ircc.cIngo Molnar2008-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86.git testing found the following build failure in latest -git: drivers/built-in.o: In function `nsc_ircc_pnp_probe': nsc-ircc.c:(.text+0xdf1b6): undefined reference to `pnp_get_resource' nsc-ircc.c:(.text+0xdf1d4): undefined reference to `pnp_get_resource' nsc-ircc.c:(.text+0xdf1ee): undefined reference to `pnp_get_resource' nsc-ircc.c:(.text+0xdf237): undefined reference to `pnp_get_resource' nsc-ircc.c:(.text+0xdf24c): undefined reference to `pnp_get_resource' drivers/built-in.o:nsc-ircc.c:(.text+0xdf266): more undefined references to `pnp_get_resource' follow make: *** [.tmp_vmlinux1] Error 1 triggered via this config: http://redhat.com/~mingo/misc/config-Sat_May__3_20_53_13_CEST_2008.bad while generally most users will have PNP enabled, drivers can support non-PNP build mode too - and most drivers implement it. That is typically done by providing a dummy pnp_driver structure that will not probe anything. The fallback routines in the driver will handle this dumber mode of operation too. This patch implements that. I have not tested whether this actually works on real hardware so take care. It does resolve the build bug. [ Another solution that is used by a few drivers is to exclude the driver in the Kconfig if PNP is disabled, via "depends on PNP", but this would limit the availability of the driver needlessly. ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David S. Miller <davem@davemloft.net>
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