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2010-05-05powerpc/4xx: Add optional "reset_type" property to control reboot via dtsStefan Roese
By setting "reset_type" to one of the following values, the default software reset mechanism may be overidden. Here the possible values of "reset_type": 1 - PPC4xx core reset 2 - PPC4xx chip reset 3 - PPC4xx system reset (default) This will be used by a new PPC440SPe board port, which needs a "chip reset" instead of the default "system reset" to be asserted. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/47x: defconfig for 476 on the iss 4xx simulatorDave Kleikamp
A defconfig for the IBM ISS 476 simulator Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/4xx: Simple platform for the ISS 4xx simulatorTorez Smith
This is a trivial 4xx plaform that uses the new simple bsp from Josh and is handy to use in simulators such as ISS or even Mambo who don't properly implement most of the actual devices in the SoC but really only the core. Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/476: Add isync after loading mmu and debug spr'sDave Kleikamp
476 requires an isync after loading MMU and debug related SPR's. Some of these are in performance-critical paths and may need to be optimized, but initially, we're playing it safe. Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/476: add machine check handler for 47x coreDave Kleikamp
The 47x core's MCSR varies from 44x, so it needs it's own machine check handler. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/47x: Base ppc476 supportDave Kleikamp
This patch adds the base support for the 476 processor. The code was primarily written by Ben Herrenschmidt and Torez Smith, but I've been maintaining it for a while. The goal is to have a single binary that will run on 44x and 47x, but we still have some details to work out. The biggest is that the L1 cache line size differs on the two platforms, but it's currently a compile-time option. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/44x: break out cpu init code into stand-alone functionDave Kleikamp
The 47x platform supports multiple cores and shares code with 44x. Break out code that is common for initializing the primary and secondary cpus into a function which can be called for both. Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-05-05powerpc/booke: Add Stack Marking support to Booke Exception PrologTorez Smith
This patch adds a marker to the exception stack frame to aid in debugging. It's already inserted on other platforms and xmon recognizes it and identifies exception frames when showing stack traces. Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2010-04-13Revert "powerpc/mm: Bump SECTION_SIZE_BITS from 16MB to 256MB"Benjamin Herrenschmidt
This reverts commit 7545ba6f82924d4523f8f8a2baf2e517a750265d. It breaks eHEA among other issues
2010-04-07powerpc: Add kprobe-based event tracerMahesh Salgaonkar
This patch ports the kprobe-based event tracer to powerpc. This patch is based on x86 port. This brings powerpc on par with x86. Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/vio: Add power management supportBenjamin Herrenschmidt
Adds support for suspend/resume for VIO devices. This is needed for support for HMC initiated hibernation. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/iseries/pci: Use __ratelimitAkinobu Mita
Replace open-coded rate limiting logic with __ratelimit(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@ozlabs.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/mm: Bump SECTION_SIZE_BITS from 16MB to 256MBAnton Blanchard
The current setting for SECTION_SIZE_BITS is quite small compared to everyone else: arch/powerpc/include/asm/sparsemem.h:#define SECTION_SIZE_BITS 24 arch/sparc/include/asm/sparsemem.h:#define SECTION_SIZE_BITS 30 arch/ia64/include/asm/sparsemem.h:#define SECTION_SIZE_BITS (30) arch/s390/include/asm/sparsemem.h:#define SECTION_SIZE_BITS 28 arch/x86/include/asm/sparsemem.h:# define SECTION_SIZE_BITS 27 And it has proven to be an issue during boot on very large machines. If hotplug memory is enabled, drivers/base/memory.c does this: for (i = 0; i < NR_MEM_SECTIONS; i++) { if (!present_section_nr(i)) continue; err = add_memory_block(0, __nr_to_section(i), MEM_ONLINE, 0, BOOT); if (!ret) ret = err; } Which creates a sysfs directory for every 16MB of memory. As a result I'm seeing up to 30 minutes spent here during boot: c000000000248ee0 .__sysfs_add_one+0x28/0x128 c0000000002492a8 .sysfs_add_one+0x38/0x188 c000000000249c88 .create_dir+0x70/0x138 c000000000249d98 .sysfs_create_dir+0x48/0x78 c00000000032bad8 .kobject_add_internal+0x140/0x308 c00000000032beb4 .kobject_init_and_add+0x4c/0x68 c00000000046c2c0 .sysdev_register+0xa0/0x220 c00000000047b1dc .add_memory_block+0x124/0x1e8 c0000000008d1f28 .memory_dev_init+0xf4/0x168 c0000000008d1b64 .driver_init+0x50/0x64 c000000000890378 .do_basic_setup+0x40/0xd4 I assume there are some O(n^2) issues in sysfs as we add all the memory nodes. Bumping SECTION_SIZE_BITS to 256 MB drops the time to about 10 seconds and results in a much smaller /sys. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pseries: Call ibm,os-term if the ibm,extended-os-term is presentAnton Blanchard
We have had issues in the past with ibm,os-term initiating shutdown of a partition. This is confusing to the user, especially if panic_timeout is non zero. The temporary fix was to avoid calling ibm,os-term if a panic_timeout was set and since we set it on every boot we basically never call ibm,os-term. An extended version of ibm,os-term has since been implemented which gives us the behaviour we want: "When the platform supports extended ibm,os-term behavior, the return to the RTAS will always occur unless there is a kernel assisted dump active as initiated by an ibm,configure-kernel-dump call." This patch checks for the ibm,extended-os-term property and calls ibm,os-term if it exists. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/numa: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaimAnton Blanchard
I noticed /proc/sys/vm/zone_reclaim_mode was 0 on a ppc64 NUMA box. It gets enabled via this: /* * If another node is sufficiently far away then it is better * to reclaim pages in a zone before going off node. */ if (distance > RECLAIM_DISTANCE) zone_reclaim_mode = 1; Since we use the default value of 20 for REMOTE_DISTANCE and 20 for RECLAIM_DISTANCE it never kicks in. The local to remote bandwidth ratios can be quite large on System p machines so it makes sense for us to reclaim clean pagecache locally before going off node. The patch below sets a smaller value for RECLAIM_DISTANCE and thus enables zone reclaim. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pmac: Fix dangling pointersWolfram Sang
Fix I2C-drivers which missed setting clientdata to NULL before freeing the structure it points to. Also fix drivers which do this _after_ the structure was freed already. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Colin Leroy <colin@colino.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc: Use set_cpus_allowed_ptrJulia Lawall
Use set_cpus_allowed_ptr rather than set_cpus_allowed. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E1,E2; @@ - set_cpus_allowed(E1, cpumask_of_cpu(E2)) + set_cpus_allowed_ptr(E1, cpumask_of(E2)) @@ expression E; identifier I; @@ - set_cpus_allowed(E, I) + set_cpus_allowed_ptr(E, &I) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pmac: Add missing unlocks in error pathJulia Lawall
In some error handling cases the lock is not unlocked. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irqsave (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/vio: Add missing unlock in error pathJulia Lawall
Add an unlock before exiting the function. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irq (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pseries/dlpar: Use kasprintfJulia Lawall
kasprintf combines kmalloc and sprintf, and takes care of the size calculation itself. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression a,flag; expression list args; statement S; @@ a = - \(kmalloc\|kzalloc\)(...,flag) + kasprintf(flag,args) <... when != a if (a == NULL || ...) S ...> - sprintf(a,args); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Nathan Fontenot <nfont@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pseries/dlpar: Eliminate use after freeJulia Lawall
dlpar_free_cc_nodes frees its argument, so dlpar_online_cpu should not be called on the same value. Skip over the call to dlpar_online_cpu by jumping directly to out. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E,E2; @@ dlpar_free_cc_nodes(E) ... ( E = E2 | * E ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pmac/windfarm: Correct potential double freeJulia Lawall
The conditionals were testing different values, but then all freeing the same one, which could result in a double free. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,e; identifier f; iterator I; statement S; @@ *kfree(x); ... when != &x when != x = e when != I(x,...) S *x // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc: Fix handling of strncmp with zero lenJeff Mahoney
Commit 0119536c, which added the assembly version of strncmp to powerpc, mentions that it adds two instructions to the version from boot/string.S to allow it to handle len=0. Unfortunately, it doesn't always return 0 when that is the case. The length is passed in r5, but the return value is passed back in r3. In certain cases, this will happen to work. Otherwise it will pass back the address of the first string as the return value. This patch lifts the len <= 0 handling code from memcpy to handle that case. Reported by: Christian_Sellars@symantec.com Signed-off-by: Jeff Mahoney <jeffm@suse.com> CC: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pmac/windfarm: Don't test pointers before kfree()d binderman
Fix minor nits found by cppcheck [./macintosh/windfarm_pm81.c:760]: (style) Redundant condition. It is safe to deallocate a NULL pointer [./macintosh/windfarm_pm81.c:762]: (style) Redundant condition. It is safe to deallocate a NULL pointer Signed-off-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pmac/low_i2c.c: three minor problemsd binderman
Fix minor nits found by cppcheck [./arch/powerpc/platforms/powermac/low_i2c.c:594]: (style) The scope of the variable chans can be reduced [./arch/powerpc/platforms/powermac/low_i2c.c:594]: (style) The scope of the variable i can be reduced [./arch/powerpc/platforms/powermac/low_i2c.c:1260]: (style) Redundant condition. It is safe to deallocate a NULL pointer Signed-off-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/aoa: gpio-pmf.c: 3 * redundant coded binderman
Signed-off-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/8xx: Use SPRG2 and DAR registers to stash r11 and cr.Joakim Tjernlund
This avoids storing these registers in memory. CPU6 errata will still use the old way. Remove some G2 leftover accesses from 2.4 Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/8xx: Don't touch ACCESSED when no SWAP.Joakim Tjernlund
Only the swap function cares about the ACCESSED bit in the pte. Do not waste cycles updateting ACCESSED when swap is not compiled into the kernel. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/8xx: Avoid testing for kernel space in ITLB Miss.Joakim Tjernlund
Only modules will cause ITLB Misses as we always pin the first 8MB of kernel memory. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/8xx: Optimze TLB Miss handlersJoakim Tjernlund
This removes a couple of insn's from the TLB Miss handlers whithout changing functionality. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/ppc32: Fixup pmd_page to work when ARCH_PFN_OFFSET is non-zeroJason Gunthorpe
Instead of referencing mem_map directly, use pfn_to_page. Otherwise the kernel crashes when trying to start userspace if ARCH_PFN_OFFSET is non-zero and CONFIG_BOOKE is not defined Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/pseries: Export data from new hcall H_EM_GET_PARMSVaidyanathan Srinivasan
Add support for H_EM_GET_PARMS hcall that will return data related to power modes from the platform. Export the data directly to user space for administrative tools to interpret and use. cat /proc/powerpc/lparcfg will export power mode data Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc: Disable interrupts for data breakpoint exceptionsK.Prasad
Data address breakpoint exceptions are currently handled along with page-faults which require interrupts to remain in enabled state. Since exception handling for data breakpoints aren't pre-empt safe, we handle them separately. Signed-off-by: K.Prasad <prasad@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/vio: Add modalias supportBenjamin Herrenschmidt
BenH: Added to vio_cmo_dev_attrs as well Provide a modalias entry for VIO devices in sysfs. I believe this was another initrd generation bugfix for anaconda. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc: Fix ioremap_flags() with book3e pte definitionBenjamin Herrenschmidt
We can't just clear the user read permission in book3e pte, because that will also clear supervisor read permission. This surely isn't desired. Fix the problem by adding the supervisor read back. BenH: Slightly simplified the ifdef and applied to ppc64 too Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc/mpsc: Set the port device in the mpsc serial driverCorey Minyard
The mpsc serial driver needx to set the port's device tree element to register properly. Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07powerpc: Add a new zImage for maple using a different link addressCorey Minyard
The maple platform failed to load because it's firmware could not take a link address of 0x4000000. A new platform type with a link address of 0x400000 had to be created for the maple. Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-07Remove unused HDPU driverBenjamin Herrenschmidt
This driver seems to be specific to a "Sky CPU" board for which we don't appear to have upstream support (or not any more). No Kconfig file in the kernel ever enables it. So remove it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-04-06Merge branch 'urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 * 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: pcmcia: fix up alignf issues
2010-04-06Merge branch 'irq-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: Force MSI irq handlers to run with interrupts disabled
2010-04-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] hpwdt - fix lower timeout limit [WATCHDOG] iTCO_wdt: TCO Watchdog patch for additional Intel Cougar Point DeviceIDs [WATCHDOG] doc: Fix use of WDIOC_SETOPTIONS ioctl. [WATCHDOG] doc: watchdog simple example: don't fail on fsync() [WATCHDOG] set max63xx driver as ARM only [WATCHDOG] powerpc: pika_wdt ident cannot be const
2010-04-06Merge branch 'upstream-linus' of ↵Linus Torvalds
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: libata: unlock HPA if device shrunk libata: disable NCQ on Crucial C300 SSD libata: don't whine on spurious IRQ
2010-04-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (37 commits) smc91c92_cs: fix the problem of "Unable to find hardware address" r8169: clean up my printk uglyness net: Hook up cxgb4 to Kconfig and Makefile cxgb4: Add main driver file and driver Makefile cxgb4: Add remaining driver headers and L2T management cxgb4: Add packet queues and packet DMA code cxgb4: Add HW and FW support code cxgb4: Add register, message, and FW definitions netlabel: Fix several rcu_dereference() calls used without RCU read locks bonding: fix potential deadlock in bond_uninit() net: check the length of the socket address passed to connect(2) stmmac: add documentation for the driver. stmmac: fix kconfig for crc32 build error be2net: fix bug in vlan rx path for big endian architecture be2net: fix flashing on big endian architectures be2net: fix a bug in flashing the redboot section bonding: bond_xmit_roundrobin() fix drivers/net: Add missing unlock net: gianfar - align BD ring size console messages net: gianfar - initialize per-queue statistics ...
2010-04-06proc: copy_to_user() returns unsignedDan Carpenter
copy_to_user() returns the number of bytes left to be copied. This was a typo from: d82ef020cf31 "proc: pagemap: Hold mmap_sem during page walk". Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-06libata: unlock HPA if device shrunkTejun Heo
Some BIOSes don't configure HPA during boot but do so while resuming. This causes harddrives to shrink during resume making libata detach and reattach them. This can be worked around by unlocking HPA if old size equals native size. Add ATA_DFLAG_UNLOCK_HPA so that HPA unlocking can be controlled per-device and update ata_dev_revalidate() such that it sets ATA_DFLAG_UNLOCK_HPA and fails with -EIO when the above condition is detected. This patch fixes the following bug. https://bugzilla.kernel.org/show_bug.cgi?id=15396 Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Oleksandr Yermolenko <yaa.bta@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-06libata: disable NCQ on Crucial C300 SSDTejun Heo
Crucial said, Thank you for contacting us. We know that with our M225 line of SSDs you sometimes need to disable NCQ (native command queuing) to avoid just the type of errors you're seeing. Our recommendation for the M225 is to add libata.force=noncq to your Linux kernel boot options, under the kernel ATA library option. I have sent your feedback to the engineers working on the C300, and asked them to please pass it on to the firmware team. I have been notified that they are in the process of testing and finalizing a new firmware version, that you can expect to see released around the end of April. We’ll keep you posted as to when it will be available for download. So, turn off NCQ on the drive w/ the current firmware revision. Reported in the following bug. https://bugzilla.kernel.org/show_bug.cgi?id=15573 Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: lethalwp@scarlet.be Reported-by: Luke Macken <lmacken@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-06libata: don't whine on spurious IRQTejun Heo
On configurations where IRQ line is shared with a different controller, spurious IRQs may happen continuously. The message was put there primarily for debugging anyway. Kill it. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2010-04-06[WATCHDOG] hpwdt - fix lower timeout limitThomas Mingarelli
[Novell Bug 581103] HP Watchdog driver has arbitrary (wrong) timeout limits. Fix the lower timeout limit to a more appropriate value. Signed-off-by: Thomas Mingarelli <Thomas.Mingarelli@hp.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: stable <stable@kernel.org>
2010-04-06[WATCHDOG] iTCO_wdt: TCO Watchdog patch for additional Intel Cougar Point ↵Seth Heasley
DeviceIDs This patch adds the Intel Cougar Point PCH LPC Controller DeviceIDs for iTCO Watchdog. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: stable <stable@kernel.org>
2010-04-06[WATCHDOG] doc: Fix use of WDIOC_SETOPTIONS ioctl.James Hogan
In the watchdog-test program and watchdog-api.txt, pass the values to the WDIOC_SETOPTIONS ioctl as a pointer to an integer containing the values intead of directly in the third ioctl argument. The actual watchdog drivers in drivers/watchdog don't read the options directly from the argument but use get_user and copy_from_user. Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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