summaryrefslogtreecommitdiffstats
path: root/arch
Commit message (Collapse)AuthorAgeFilesLines
* powerpc: Fix oops when echoing bad values to /sys/devices/system/memory/probeAnton Blanchard2011-09-203-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we echo an address the hypervisor doesn't like to /sys/devices/system/memory/probe we oops the box: # echo 0x10000000000 > /sys/devices/system/memory/probe kernel BUG at arch/powerpc/mm/hash_utils_64.c:541! The backtrace is: create_section_mapping arch_add_memory add_memory memory_probe_store sysdev_class_store sysfs_write_file vfs_write SyS_write In create_section_mapping we BUG if htab_bolt_mapping returned an error. A better approach is to return an error which will propagate back to userspace. Rerunning the test with this patch applied: # echo 0x10000000000 > /sys/devices/system/memory/probe -bash: echo: write error: Invalid argument Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Coding style cleanupsAnton Blanchard2011-09-202-10/+17
| | | | | | | | While converting code to use for_each_node_by_type I noticed a number of coding style issues. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Use for_each_node_by_type instead of open coding itAnton Blanchard2011-09-203-8/+7
| | | | | | | Use for_each_node_by_type instead of open coding it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Remove double of_node_put in hot_add_node_scn_to_nidAnton Blanchard2011-09-201-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | During memory hotplug testing, I got the following warning: ERROR: Bad of_node_put() on /memory@0 of_node_release kref_put of_node_put of_find_node_by_type hot_add_node_scn_to_nid hot_add_scn_to_nid memory_add_physaddr_to_nid ... of_find_node_by_type() loop does the of_node_put for us so we only need the handle the case where we terminate the loop early. As suggested by Stephen Rothwell we can do the of_node_put unconditionally outside of the loop since of_node_put handles a NULL argument fine. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@kernel.org Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Remove duplicate RECLAIM_DISTANCE definitionAnton Blanchard2011-09-201-10/+0
| | | | | | | | We have two identical definitions of RECLAIM_DISTANCE, looks like the patch got applied twice. Remove one. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Disable NEWIDLE balancing at node levelAnton Blanchard2011-09-201-1/+1
| | | | | | | | | | | | | On big POWER7 boxes we see large amounts of CPU time in system processes like workqueue and watchdog kernel threads. We currently rebalance the entire machine each time a task goes idle and this is very expensive on large machines. Disable newidle balancing at the node level and rely on the scheduler tick to rebalance across nodes. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Increase SD_NODES_PER_DOMAIN to 32.Anton Blanchard2011-09-201-0/+6
| | | | | | | | | | | | The largest POWER7 boxes have 32 nodes. SD_NODES_PER_DOMAIN groups nodes into chunks of 16 and adds a global balancing domain (SD_ALLNODES) above it. If we bump SD_NODES_PER_DOMAIN to 32, then we avoid this extra level of balancing on our largest boxes. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc/numa: Enable SD_WAKE_AFFINE in node definitionAnton Blanchard2011-09-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When chasing a performance issue on ppc64, I noticed tasks communicating via a pipe would often end up on different nodes. It turns out SD_WAKE_AFFINE is not set in our node defition. Commit 9fcd18c9e63e (sched: re-tune balancing) enabled SD_WAKE_AFFINE in the node definition for x86 and we need a similar change for ppc64. I used lmbench lat_ctx and perf bench pipe to verify this fix. Each benchmark was run 10 times and the average taken. lmbench lat_ctx: before: 66565 ops/sec after: 204700 ops/sec 3.1x faster perf bench pipe: before: 5.6570 usecs after: 1.3470 usecs 4.2x faster Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge remote-tracking branch 'origin/master' into nextBenjamin Herrenschmidt2011-09-2062-152/+368
|\ | | | | | | (Merge in order to get the PCIe mps/mrss code fixes)
| * Merge branch 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xenLinus Torvalds2011-09-163-9/+8
| |\ | | | | | | | | | | | | | | | | | | | | | * 'stable/bug.fixes' of git://oss.oracle.com/git/kwilk/xen: xen/i386: follow-up to "replace order-based range checking of M2P table by linear one" xen/irq: Alter the locking to use a mutex instead of a spinlock. xen/e820: if there is no dom0_mem=, don't tweak extra_pages. xen: disable PV spinlocks on HVM
| | * xen/i386: follow-up to "replace order-based range checking of M2P table by ↵Jan Beulich2011-09-151-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | linear one" The numbers obtained from the hypervisor really can't ever lead to an overflow here, only the original calculation going through the order of the range could have. This avoids the (as Jeremy points outs) somewhat ugly NULL-based calculation here. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen/e820: if there is no dom0_mem=, don't tweak extra_pages.David Vrabel2011-09-131-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch "xen: use maximum reservation to limit amount of usable RAM" (d312ae878b6aed3912e1acaaf5d0b2a9d08a4f11) breaks machines that do not use 'dom0_mem=' argument with: reserve RAM buffer: 000000133f2e2000 - 000000133fffffff (XEN) mm.c:4976:d0 Global bit is set to kernel page fffff8117e (XEN) domain_crash_sync called from entry.S (XEN) Domain 0 (vcpu#0) crashed on cpu#0: ... The reason being that the last E820 entry is created using the 'extra_pages' (which is based on how many pages have been freed). The mentioned git commit sets the initial value of 'extra_pages' using a hypercall which returns the number of pages (if dom0_mem has been used) or -1 otherwise. If the later we return with MAX_DOMAIN_PAGES as basis for calculation: return min(max_pages, MAX_DOMAIN_PAGES); and use it: extra_limit = xen_get_max_pages(); if (extra_limit >= max_pfn) extra_pages = extra_limit - max_pfn; else extra_pages = 0; which means we end up with extra_pages = 128GB in PFNs (33554432) - 8GB in PFNs (2097152, on this specific box, can be larger or smaller), and then we add that value to the E820 making it: Xen: 00000000ff000000 - 0000000100000000 (reserved) Xen: 0000000100000000 - 000000133f2e2000 (usable) which is clearly wrong. It should look as so: Xen: 00000000ff000000 - 0000000100000000 (reserved) Xen: 0000000100000000 - 000000027fbda000 (usable) Naturally this problem does not present itself if dom0_mem=max:X is used. CC: stable@kernel.org Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen: disable PV spinlocks on HVMStefano Stabellini2011-09-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PV spinlocks cannot possibly work with the current code because they are enabled after pvops patching has already been done, and because PV spinlocks use a different data structure than native spinlocks so we cannot switch between them dynamically. A spinlock that has been taken once by the native code (__ticket_spin_lock) cannot be taken by __xen_spin_lock even after it has been released. Reported-and-Tested-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| * | asm alternatives: remove incorrect alignment notesLinus Torvalds2011-09-153-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On x86-64, they were just wasteful: with the explicitly added (now unnecessary) padding, the size of the alternatives structure was 16 bytes, and an alignment of 8 bytes didn't hurt much. However, it was still silly, since the natural size and alignment for the structure is actually just 12 bytes, 4-byte aligned since commit 59e97e4d6fbc ("x86: Make alternative instruction pointers relative"). So removing the padding, and removing the extra alignment is just a good idea. On x86-32, the alignment of 4 bytes was correct, but was incorrectly hardcoded as 8 bytes in <asm/alternative-asm.h>. That header file had used to be an x86-64 only header file, but various unification efforts have made it be used for x86-32 too (ie the unification of rwlock and rwsem). That in turn caused x86-32 boot failures, because the extra alignment would result in random zero-filled words in the altinstructions section, causing oopses early at boot when doing alternative instruction replacement. So just remove all the alignment noise entirely. It's wrong, and it's unnecessary. The section itself is already properly aligned by the linker scripts, and all additions to the section had better be of the proper 12-byte format, keeping it aligned. So if the align directive were to ever make a difference, that would be an indication of a serious bug to begin with. Reported-by: Werner Landgraf <w.landgraf@ru.r> Acked-by: Andrew Lutomirski <luto@mit.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | alpha, gpio: GENERIC_GPIO default must be nBen Hutchings2011-09-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since GPIOLIB is optional on alpha, GENERIC_GPIO must not be selected by default. If GPIOLIB is enabled, it will select GENERIC_GPIO. See <http://bugs.debian.org/638696> for an example of what 'def_bool y' breaks. Reported-by: Michael Cree <mcree@orcon.net.nz> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: fix strrchr() problemsAl Viro2011-09-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | richard@nod.at: Fixes: /usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex': (.text+0x0): multiple definition of `strrchr' If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strrchr may clash with the kernel implementation. This workaround comes originally from Jeff Dike: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: clean arch_ptrace() up a bitAl Viro2011-09-145-46/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) take subarch-specific stuff to subarch_ptrace() 2) PTRACE_{PEEK,POKE}{TEXT,DATA} is handled by ptrace_request() just fine... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: PTRACE_[GS]ETFPXREGS had been wired on the wrong subarchAl Viro2011-09-142-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's 32bit-only, not 64bit-only... And while we are at it, it's set_fpxregs(), not set_fpregs()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: fix free_winch() messAl Viro2011-09-141-14/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | while not doing free_irq() from irq handler is commendable, kfree() on the data passed to said handler before free_irq() is Not Good(tm). Freeing the stack it's being run on is also not nice... Solution: delay actually freeing stuff. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: winch_interrupt() can happen inside of free_winch()Al Viro2011-09-141-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... so set winch->fd to -1 before doing free_irq(), to avoid having winch_interrupt() come from/during the latter and attempt to do reactivate_fd() on something that's already gone. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: fix oopsable race in line_close()Al Viro2011-09-142-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tty->count is decremented only after ->close() had been called and several tasks can hit it in parallel. As the result, using tty->count to check if you are the last one is broken. We end up leaving line->tty not reset to NULL and the next IRQ on that sucker will blow up trying to dereference pointers from kfree'd struct tty. Fix is obvious: we need to use a counter of our own. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: Save FPU registers between task switchesIngo van Lil2011-09-147-5/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some time ago Jeff prepared 42daba316557 ("uml: stop saving process FP state") for UML to stop saving the process FP state between task switches. The assumption was that since with SKAS0 every guest process runs inside a host process context the host OS will take care of keeping the proper FP state. Unfortunately this is not true for multi-threaded applications, where all guest threads share a single host process context yet all may use the FPU on their own. Although I haven't verified it I suspect things to be even worse in SKAS3 mode where all guest processes run inside a single host process. The patch reintroduces the saving and restoring of the FP context between task switches. [richard@nod.at: Ingo posted this patch in 2009, sadly it was never applied and got lost. Now in 2011 the problem was reported by Gunnar.] Signed-off-by: Ingo van Lil <inguin@gmx.de> Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: <gunnarlindroth@hotmail.com> Tested-by: <gunnarlindroth@hotmail.com> Cc: Stanislav Meduna <stano@meduna.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: drivers/xterm.c: fix a file descriptor leakJonathan Neuschäfer2011-09-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I could use out_close1, but that seems to be the code path to close the fd returned by os_create_unix_socket, and using it to close the fd returned by mkstemp might lead to some confusion, so I don't do it. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | um: disable CMPXCHG_DOUBLE as it breaks UML buildThadeu Lima de Souza Cascardo2011-09-141-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b789ef518b2 ("slub: Add cmpxchg_double_slab()") tests for cmpxchg_double support in the SLUB code and it breaks UML builds with SLUB. Since UML does not support checking for CPU features, disable CMPXCHG_DOUBLE just like CMPXCHG_LOCAL is disabled for UML. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | Merge branch 'upstream/bugfix' of git://github.com/jsgf/linux-xenLinus Torvalds2011-09-121-2/+3
| |\ \ | | | | | | | | | | | | | | | | * 'upstream/bugfix' of git://github.com/jsgf/linux-xen: xen: use non-tracing preempt in xen_clocksource_read()
| | * | xen: use non-tracing preempt in xen_clocksource_read()Jeremy Fitzhardinge2011-08-241-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tracing code used sched_clock() to get tracing timestamps, which ends up calling xen_clocksource_read(). xen_clocksource_read() must disable preemption, but if preemption tracing is enabled, this results in infinite recursion. I've only noticed this when boot-time tracing tests are enabled, but it seems like a generic bug. It looks like it would also affect kvm_clocksource_read(). Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Avi Kivity <avi@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com>
| * | | Merge branch 'fixes' of git://git.linaro.org/people/arnd/arm-socLinus Torvalds2011-09-1218-18/+72
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'fixes' of git://git.linaro.org/people/arnd/arm-soc: ARM: CSR: add missing sentinels to of_device_id tables ARM: cns3xxx: Fix newly introduced warnings in the PCIe code ARM: cns3xxx: Fix compile error caused by hardware.h removed ARM: davinci: fix cache flush build error ARM: davinci: correct MDSTAT_STATE_MASK ARM: davinci: da850 EVM: read mac address from SPI flash OMAP: omap_device: fix !CONFIG_SUSPEND case in _noirq handlers OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[] OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the WKUP clockdomain OMAP4: clock: fix compile warning OMAP4: clock: re-enable previous clockdomain enable/disable sequence OMAP: clockdomain: Wait for powerdomain to be ON when using clockdomain force wakeup OMAP: powerdomains: Make all powerdomain target states as ON at init
| | * \ \ Merge branch 'for_3.1/pm-fixes-2' of ↵Arnd Bergmann2011-09-121-0/+3
| | |\ \ \ | | | | | | | | | | | | | | | | | | git://gitorious.org/khilman/linux-omap-pm into fixes
| | | * | | OMAP: omap_device: fix !CONFIG_SUSPEND case in _noirq handlersKevin Hilman2011-09-061-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The suspend/resume _noirq handlers were #ifdef'd out in the !CONFIG_SUSPEND case, but were still assigned to the dev_pm_ops struct. Fix by defining them to NULL in the !CONFIG_SUSPEND case. Reported-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kevin Hilman <khilman@ti.com>
| | * | | | Merge branch 'sirf/fixes' into fixesArnd Bergmann2011-09-124-0/+4
| | |\ \ \ \
| | | * | | | ARM: CSR: add missing sentinels to of_device_id tablesJamie Iles2011-09-114-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The of_device_id tables used for matching should be terminated with empty sentinel values. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Barry Song <baohua.song@csr.com>
| | | | | | |
| | | \ \ \ \
| | *-. \ \ \ \ Merge branches 'cns3xxx/fixes', 'omap/fixes' and 'davinci/fixes' into fixesArnd Bergmann2011-09-109-14/+64
| | |\ \ \ \ \ \
| | | | * | | | | ARM: davinci: fix cache flush build errorLinus Walleij2011-09-071-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TNET variant of DaVinci compiles some code that it shares with other DaVinci variants, however it has a V6 CPU rather than an ARM926T, thus the hardcoded call to arm926_flush_kern_cache_all() in sleep.S will obviously fail, and we need to build with the v6_flush_kern_cache_all() call instead. This was triggered by manually altering the DaVinci config to build the TNET version. Cc: Dave Martin <dave.martin@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Cc: stable@kernel.org
| | | | * | | | | ARM: davinci: correct MDSTAT_STATE_MASKSergei Shtylyov2011-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MDSTAT.STATE occupies bits 0..5 according to all available documentation, so fix the #define MDSTAT_STATE_MASK at last. Using the wrong value seems to have been harmless though... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
| | | | * | | | | ARM: davinci: da850 EVM: read mac address from SPI flashRajashekhara, Sudhakar2011-09-071-0/+28
| | | | |/ / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DA850/OMAP-L138 EMAC driver uses random mac address instead of a fixed one because the mac address is not stuffed into EMAC platform data. This patch provides a function which reads the mac address stored in SPI flash (registered as MTD device) and populates the EMAC platform data. The function which reads the mac address is registered as a callback which gets called upon addition of MTD device. NOTE: In case the MAC address stored in SPI flash is erased, follow the instructions at [1] to restore it. [1] http://processors.wiki.ti.com/index.php/GSG:_OMAP-L138_DVEVM_Additional_Procedures#Restoring_MAC_address_on_SPI_Flash Modifications in v2: Guarded registering the mtd_notifier only when MTD is enabled. Earlier this was handled using mtd_has_partitions() call, but this has been removed in Linux v3.0. Modifications in v3: a. Guarded da850_evm_m25p80_notify_add() function and da850evm_spi_notifier structure with CONFIG_MTD macros. b. Renamed da850_evm_register_mtd_user() function to da850_evm_setup_mac_addr() and removed the struct mtd_notifier argument to this function. c. Passed the da850evm_spi_notifier structure to register_mtd_user() function. Modifications in v4: Moved the da850_evm_setup_mac_addr() function within the first CONFIG_MTD ifdef construct. Signed-off-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Cc: stable@kernel.org
| | | | | | | |
| | | | \ \ \ \
| | | | \ \ \ \
| | | | \ \ \ \
| | | | \ \ \ \
| | | | \ \ \ \
| | | *-----. \ \ \ \ Merge branches 'non_hwmod_compliant_fix_3.1rc', 'omap3_clock_fixes_3.1rc', ↵Paul Walmsley2011-09-0465-332/+582
| | | |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'omap4_clock_fixes_3.1rc', 'missing_2430_musb_adds_terminator_fix_3.1rc' and 'pwrdm_clkdm_fixes_3.1rc' into prcm-fixes-a-3.1rc
| | | | | | | * | | | | OMAP: clockdomain: Wait for powerdomain to be ON when using clockdomain ↵Santosh Shilimkar2011-08-192-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | force wakeup While using clockdomain force wakeup method, not waiting for powerdomain to be effectively ON may end up locking the clockdomain FSM until a next wakeup event occurs. One such issue was seen on OMAP4430, where L4_PER was periodically getting stuck in in-transition state when transitioning from from OSWR to ON. This issue was reported and investigated by Patrick Titiano <p-titiano@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Rajendra Nayak <rnayak@ti.com> Reported-by: Patrick Titiano <p-titiano@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: Benoit Cousson <b-cousson@ti.com> Cc: Paul Walmsley <paul@pwsan.com> [paul@pwsan.com: updated to apply; added transition wait on clkdm_deny_idle(); remove two superfluous pwrdm_wait_transition() calls] Signed-off-by: Paul Walmsley <paul@pwsan.com>
| | | | | | | * | | | | OMAP: powerdomains: Make all powerdomain target states as ON at initRajendra Nayak2011-08-191-9/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Program all powerdomain target state as ON; this is to prevent domains from hitting low power states (if bootloader has target states set to something other than ON) and potentially even losing context while PM is not fully initialized, which can cause the system to crash. The PM late init code can then program the desired target state for all the power domains. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [paul@pwsan.com: dropped comment typo hunk; fixed comment indent and moved to kerneldoc; moved code to pwrdm_init(); changed pwrdm_init() argument name to prevent clash; cleaned up patch description] Signed-off-by: Paul Walmsley <paul@pwsan.com>
| | | | | | * | | | | | OMAP2430: hwmod: musb: add missing terminator to omap2430_usbhsotg_addrs[]Paul Walmsley2011-09-041-0/+1
| | | | | | | |_|/ / / | | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a missing array terminator to omap2430_usbhsotg_addrs[]. Without this terminator, the omap_hwmod resource building code runs off the end of the array, resulting in at least this error -- if not worse behavior: [ 0.578002] musb-omap2430: failed to claim resource 4 [ 0.583465] omap_device: musb-omap2430: build failed (-16) [ 0.589294] Could not build omap_device for musb-omap2430 usb_otg_hs This should have been part of commit 78183f3fdf76f422431a81852468be01b36db325 ("omap_hwmod: use a null structure record to terminate omap_hwmod_addr_space arrays") but was evidently missed. Signed-off-by: Paul Walmsley <paul@pwsan.com>
| | | | | * | | | | | OMAP4: clock: fix compile warningPaul Walmsley2011-08-211-0/+2
| | | | | | |/ / / / | | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following compile warning: arch/arm/mach-omap2/clock44xx_data.c: In function 'omap4xxx_clk_init': arch/arm/mach-omap2/clock44xx_data.c:3371:6: warning: 'cpu_clkflg' may be used uninitialized in this function The approach taken here is intended to work if omap4xxx_clk_init() is converted into an initcall. Thanks to Bjarne Steinsbo <bsteinsbo@gmail.com> for proposing another approach. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Bjarne Steinsbo <bsteinsbo@gmail.com>
| | | | * | | | | | OMAP3: clock: indicate that gpt12_fck and wdt1_fck are in the WKUP clockdomainPaul Walmsley2011-08-221-0/+2
| | | | | |_|_|/ / | | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The oscillator that supplies GPT12_FCLK and WDT1_FCLK exists in the WKUP powerdomain[1]. This resolves at least one boot-time warning: omap_hwmod: gpt12_fck: missing clockdomain for gpt12_fck. 1. _OMAP34xx Multimedia High Security (HS) Device Silicon Revision 3.1.x Security Addendum Version K (SWPU119K)_ Figure 3-29. August 2010.
| | | * | | | | | OMAP4: clock: re-enable previous clockdomain enable/disable sequencePaul Walmsley2011-08-191-1/+7
| | | | |/ / / / | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit 665d001338b494d6d62810aa99b4c0fa1a0884b9 ("OMAP2+: hwmod: Follow the recommended PRCM module enable sequence"), device drivers for OMAP IP blocks that do not use runtime PM can cause oopses or kernel instability[1][2]. This is because those non-runtime PM drivers do not use the hwmod code, which implements the correct IP block enable and disable sequence. Several options for dealing with this problem have been proposed: 1. Add a new field to the OMAP struct clk to mark clocks that are currently used by non-runtime PM drivers. Modify the clock code to use the old clockdomain sequence for these marked clocks. As drivers are converted to use runtime PM, remove the annotation from the clocks. 2. Similar to #1, but associate the flag with the struct omap_clk instead. 3. Add IDLEST wait support to the OMAP4 clock code, similar to the way it is implemented for OMAP2/3, and enable it in each struct clk currently used by non-runtime PM drivers. As drivers are converted to use runtime PM, remove the annotation from the clocks. 4. Do nothing; leave the problem to those responsible for the unconverted drivers. 5. Re-enable clock-based clockdomain control in the OMAP4 clock code. This would revert back to the behavior of Linux 3.0, simply with a slightly longer module enable/disable latency. Unfortunately, no approach seemed particularly good. Options 1 through 3 seemed unwise due to the following reasons: A. The OMAP struct clks are intended primarily to describe hardware clock nodes, and the intention is that no driver-specific data should be stored there (applies to #1) B. The resulting patch would have been quite large for the -rc series (applies to #1, #2, #3) C. The patch would have been a new, yet temporary hack; and similar fixes have drawn negative comments in the recent past (see for example [3]) Option 4 is undesirable because commit 665d001338b494d6d62810aa99b4c0fa1a0884b9 ("OMAP2+: hwmod: Follow the recommended PRCM module enable sequence") has resulted in a less stable kernel; and kernel stability is more important than OMAP4 power management. Option 5 is the approach taken in this patch. This seemed to be the least intrusive approach for 3.1-rc. The approach in this patch was originally proposed by Ohad Ben-Cohen <ohad@wizery.com>. I'm simply writing the commit message and passing it along. ... Thanks to Luciano Coelho <coelho@ti.com> for reporting the problem. Thanks to Ohad Ben-Cohen <ohad@wizery.com> for tracking the problem down, generating a temporary workaround, and proposing a patch to deal with the problem. Thanks to Rajendra Nayak <rnayak@ti.com> for proposing another patch to deal with the problem. Thanks to Felipe Balbi <balbi@ti.com> for comments. 1. Coelho, Luciano <coelho@ti.com>. _Re: Oops on ehci_hcd when booting 3.0.0-rc2 on panda_. Tue, 09 Aug 2011 14:26:08 +0300. Posted to the <linux-omap@vger.kernel.org> mailing list. Available from (among others) http://www.spinics.net/linux/lists/linux-omap/msg55213.html 2. Munegowda, Keshava <keshava_mgowda@ti.com>. _Re: Oops on ehci_hcd when booting 3.0.0-rc2 on panda_. Thu, 11 Aug 2011 13:51:05 +0530. Posted to the <linux-omap@vger.kernel.org> mailing list. Available from (among others) http://www.spinics.net/linux/lists/linux-omap/msg55371.html 3. King, Russell <linux@arm.linux.org.uk>. _Re: [PATCH 5/8] OMAP4: PM: TEMP: Prevent l3init from idling/force sleep_. Thu, 23 Jun 2011 16:22:49 +0100. Posted to the <linux-omap@vger.kernel.org> mailing list. Available from (among others) http://www.mail-archive.com/linux-omap@vger.kernel.org/msg51392.html Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Luciano Coelho <coelho@ti.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Benoît Cousson <b-cousson@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
| | * | | | | | ARM: cns3xxx: Fix newly introduced warnings in the PCIe codeAnton Vorontsov2011-09-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit d5341942d784134f2997b3ff82cd63cf71d1f932 ("PCI: Make the struct pci_dev * argument of pci_fixup_irqs const") did not change argument of pdev_to_cnspci(), and thus introduced the following warnings: CHECK arch/arm/mach-cns3xxx/pcie.c pcie.c:177:60: warning: incorrect type in argument 1 (different modifiers) pcie.c:177:60: expected struct pci_dev *dev pcie.c:177:60: got struct pci_dev const *dev CC arch/arm/mach-cns3xxx/pcie.o pcie.c: In function 'cns3xxx_pcie_map_irq': pcie.c:177: warning: passing argument 1 of 'pdev_to_cnspci' discards qualifiers from pointer target type pcie.c:52: note: expected 'struct pci_dev *' but argument is of type 'const struct pci_dev *' This patch fixes the issue. Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| | * | | | | | ARM: cns3xxx: Fix compile error caused by hardware.h removedTommy Lin2011-09-093-3/+0
| | | |_|_|/ / | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit c9d95fbe59e426eed7f16e7cac812e46ac4772d0 "ARM: convert PCI defines to variables" deleted cns3xxx' hardware.h, but didn't remove references for it, so do it now. This patch removes lines that refer to hardware.h. Signed-off-by: Tommy Lin <tommy.lin.1101@gmail.com> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
| * | | | | | Merge branch 'for-linus' of git://openrisc.net/~jonas/linuxLinus Torvalds2011-09-114-27/+96
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://openrisc.net/~jonas/linux: Add missing DMA ops openrisc: don't use pt_regs in struct sigcontext
| | * | | | | | Add missing DMA opsJonas Bonn2011-09-112-3/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the initial architecture submission, not all of the DMA ops were implemented. This patch adds the *map_page and *map_sg variants of the DMA mapping ops. This patch is currently of interest mainly to some drivers that haven't been submitted upstream yet. Signed-off-by: Jonas Bonn <jonas@southpole.se>
| | * | | | | | openrisc: don't use pt_regs in struct sigcontextJonas Bonn2011-09-052-24/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As it was decided not to export struct pt_regs to userspace, struct sigcontext shouldn't be using it either. The pt_regs struct for OpenRISC is kernel internal and the layout of the registers may change in the future. The struct user_regs_struct is what is guaranteed to remain stable, so struct sigcontext may use that instead. This patch removes the usage of struct pt_regs in struct sigcontext and makes according changes in signal.c to get the register layout right. The usp field is removed from the sigcontext structure as this information is already contained in the user_regs_struct. Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Emilio Cota <cota@braap.org>
| * | | | | | | Merge branch 'fixes' of ↵Linus Torvalds2011-09-105-7/+33
| |\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: ARM: 7088/1: entry: fix wrong parameter name used in do_thumb_abort ARM: 7080/1: l2x0: make sure I&D are not locked down on init ARM: 7081/1: mach-integrator: fix the clocksource NET: am79c961: fix race in link status code ARM: 7067/1: mm: keep significant bits in pfn_valid
| | * | | | | | | ARM: 7088/1: entry: fix wrong parameter name used in do_thumb_abortJanusz Krzysztofik2011-09-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit be020f8618ca, "ARM: entry: abort-macro: specify registers to be used for macros", while replacing register numbers with macro parameter names, mismatched the name used for r1. For me, this resulted in user space built for EABI with -march=armv4t -mtune=arm920t -mthumb-interwork -mthumb broken on my OMAP1510 based Amstrad Delta (old ABI and no thumb still worked for me though). Fix this by using correct parameter name fsr instead of mismatched psr, used by callers for another purpose. Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | | | | ARM: 7080/1: l2x0: make sure I&D are not locked down on initLinus Walleij2011-09-072-2/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fighting unfixed U-Boots and other beasts that may the cache in a locked-down state when starting the kernel, we make sure to disable all cache lock-down when initializing the l2x0 so we are in a known state. Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Rabin Vincent <rabin.vincent@stericsson.com> Cc: Adrian Bunk <adrian.bunk@movial.com> Cc: Rob Herring <robherring2@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reported-by: Jan Rinze <janrinze@gmail.com> Tested-by: Robert Marklund <robert.marklund@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
OpenPOWER on IntegriCloud