| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
MAINTAINERS
drivers/net/Kconfig
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
drivers/net/ethernet/broadcom/tg3.c
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
drivers/net/wireless/rt2x00/rt2800usb.c
drivers/net/wireless/wl12xx/main.c
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* 'fixes' of git://git.linaro.org/people/arnd/arm-soc:
mach-integrator: fix VGA base regression
arm/dt: Tegra: Update SDHCI nodes to match bindings
ARM: EXYNOS4: fix incorrect pad configuration for keypad row lines
ARM: SAMSUNG: fix to prevent declaring duplicated
ARM: SAMSUNG: fix watchdog reset issue with clk_get()
ARM: S3C64XX: Remove un-used code backlight code on SMDK6410
ARM: EXYNOS4: restart clocksource while system resumes
ARM: EXYNOS4: Fix routing timer interrupt to offline CPU
ARM: EXYNOS4: Fix return type of local_timer_setup()
ARM: EXYNOS4: Fix wrong pll type for vpll
ARM: Dove: fix second SPI initialization call
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The changes introduced in commit
cc22b4c18540e5e8bf55c7d124044f9317527d3c
"ARM: set vga memory base at run-time"
Makes the Integrator/AP freeze completely. I appears that
this is due to the VGA base address being assigned at PCI
init time, while this base is needed earlier than that.
Moving the initialization of the base address to the
.map_io function solves this problem.
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The bindings were recently updated to have separate properties for each
type of GPIO. Update the Device Tree source to match that.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The keypad controller requires a external pull-up for all the keypad
row lines. Fix the incorrect pad configuration for keypad controller
row lines by enabling the pad pull-up for the all row lines of the
keypad controller.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The plat/clock.h revised to prevent declaring duplicated.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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clkdev framework uses global mutex to protect clock tree, so it is not
possible to call clk_get() in interrupt context. This patch fixes this
issue and makes system reset by watchdog call working again.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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According to commit 96d78686d4("ARM: S3C64XX: Add PWM backlight
support on SMDK6410") and commit f00207b255("ARM: SAMSUNG: Create
a common infrastructure for PWM backlight support"), this should
not be used anymore.
And this patch fixes follwing warning:
arch/arm/mach-s3c64xx/mach-smdk6410.c:296: warning: 'smdk6410_backlight_device' defined but not used
Signed-off-by: Banajit Goswami <banajit.g@samsung.com>
[kgene.kim@samsung.com: modified commit message]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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System resume can't be completed because mct-frc isn't restarted
after system suspends. This patch restarts mct-frc during system
resume.
Reported-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The commit 5dfc54e087c15f823ee9b6541d2f0f314e69cbed
("ARM: GIC: avoid routing interrupts to offline CPUs")
prevents routing interrupts to offline CPUs. But in
case of timer on EXYNOS4, the irq_set_affinity() method
is called in percpu_timer_setup() before CPU1 becomes
online. So this patch fixes routing timer interrupt to
offline CPU.
Reported-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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According to commmit af90f10d ("ARM: 6759/1: smp: Select
local timers vs broadcast timer support"), the return type
of local_timer_setup() should be int instead of void.
Reported-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The PLL4650C is used for VPLL on EXYNOS4 so should be fixed.
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
[kgene.kim@samsung.com: added message]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Commit 980f9f601a "ARM: orion: Consolidate SPI initialization."
broke it by overwriting the SPI0 registration.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: <stable@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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* '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
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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... 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>
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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>
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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>
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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>
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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>
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* 'upstream/bugfix' of git://github.com/jsgf/linux-xen:
xen: use non-tracing preempt in xen_clocksource_read()
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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>
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* '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
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git://gitorious.org/khilman/linux-omap-pm into fixes
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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>
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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>
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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
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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>
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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
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'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
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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>
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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>
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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>
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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>
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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.
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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>
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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>
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