For historical reasons, ARM used to set r0-r2 in start_thread() to the
first values on the user stack when starting a new user application. The
same logic has been inherited in AArch64. The x0 register is overridden
by the sys_execve() return value so it's always zero on success. The x1
and x2 registers are ignored by AArch64 and EABI AArch32 applications,
so we can safely remove the register setting for both native and compat
user space.
This also fixes a potential fault with the kernel accessing user space
stack directly.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
According to Documentation/arm64/booting.txt, the kernel image must be
loaded at a pre-defined offset from the start of RAM so that the kernel
can calculate PHYS_OFFSET based on this address. If the DT contains
memory blocks below this PHYS_OFFSET, report them and ignore the
corresponding memory range.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
With commit 576094b7 (time: Introduce new GENERIC_TIME_VSYSCALL) the old
update_vsyscall() prototype is no longer available. This patch updates
the arm64 port.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
With commit 786d35d4 (make most arch asm/module.h files use
asm-generic/module.h) arm64 needs to enable MODULES_USE_ELF_RELA for
loadable modules.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Pull MIPS fixes from Ralf Baechle:
"Random small fixes across the MIPS code."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: CMP: Fix physical core number calculation logic
MIPS: JZ4740: Forward declare struct uart_port in header.
MIPS: JZ4740: Fix '#include guard' in serial.h
MIPS: hugetlbfs: Fix hazard between tlb write and pagemask restoration.
MIPS: Restore pagemask after dumping the TLB.
MIPS: Hugetlbfs: Handle huge pages correctly in pmd_bad()
MIPS: R5000: Fix TLB hazard handling.
MIPS: tlbex: Deal with re-definition of label
MIPS: Make __{,n,u}delay declarations match definitions and generic delay.h
Pull powerpc fixes from Benjamin Herrenschmidt:
"Here are a handful of powerpc related fixes."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
cpuidle/powerpc: Fix snooze state problem in the cpuidle design on pseries.
cpuidle/powerpc: Fix smt_snooze_delay functionality.
cpuidle/powerpc: Fix target residency initialisation in pseries cpuidle
powerpc: Build fix for powerpc KVM
Revert "powerpc/perf: Use pmc_overflow() to detect rolled back events"
A handful of fixes:
- a fix for dtc from upstream
- sparse fixes in DeviceTree code
- stub of_get_child_by_name for !OF builds
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJQgCc2AAoJEMhvYp4jgsXiIdQIAKKph1glOZ6KVa80c12iR+fy
lSUKi6ZGr1C/AmAiknzYRTsF1ouw02ySD2Z1AsaQsnEHU9S5jUO7qgTohS30p7zg
RfEh/646bOOc+l6LvT1jEJJNwmyLyJjtWqFtJf/QBcxsLNkJciEoHfcss05GYEIu
H8NGWYVEhngC1vmTmlYQ9xDjA+YGQ2OEVqMSxFDf6K+5uJqMpvSNNenC6TeHK6iP
/+fMnpKyU3EFzIO0r+AF4crIlJzTbrJQFJPrOZySthQhaqJPfvKVsHA20TOeYADP
7po8Km9zWGBqY19Ied6ZzdLm6qg1LTOGWVFlRICL0AUP9OPmmUT6p9OZRceKT1Q=
=MTRP
-----END PGP SIGNATURE-----
Merge tag 'dt-fixes-for-3.7' of git://sources.calxeda.com/kernel/linux
Pull DeviceTree fixes from Rob Herring:
"A handful of fixes:
- a fix for dtc from upstream
- sparse fixes in DeviceTree code
- stub of_get_child_by_name for !OF builds"
* tag 'dt-fixes-for-3.7' of git://sources.calxeda.com/kernel/linux:
dtc: fix for_each_*() to skip first object if deleted
of/platform: sparse fix
of/irq: sparse fixes
of/address: sparse fixes
of: add stub of_get_child_by_name for non-OF builds
Significant changes are:
- A regression fix for the new HD-audio LPIB delay counting,
VGA-switcheroo race fix
- ASoC ams-delta fix for the broken driver loading
Otherwise a collection of mostly small / trivial fixes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=bW/T
-----END PGP SIGNATURE-----
Merge tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Significant changes are:
- A regression fix for the new HD-audio LPIB delay counting,
VGA-switcheroo race fix
- ASoC ams-delta fix for the broken driver loading
Otherwise a collection of mostly small / trivial fixes."
* tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: emu10k1: add chip details for E-mu 1010 PCIe card
ALSA: hda - Always check array bounds in alc_get_line_out_pfx
ASoC: bells: Correct typo in sub speaker DAI name for WM5110
ALSA: hda - Stop LPIB delay counting on broken hardware
ALSA: hda - Fix registration race of VGA switcheroo
ALSA: hda - Clean up superfluous position_fix list entries
ALSA: ac97 - Fix missing NULL check in snd_ac97_cvol_new()
ASoC: codecs: da9055: Minor improvement in ALC calibration process
ASoC: dmaengine: Correct Makefile when sound is built as module
ASoC: fsi: don't reschedule DMA from an atomic context
ASoC: fix documentation in soc-jack
ARM: pxa: Fix build error caused by sram.h rename
ASoC: wm2200: Fix non-inverted OUT2 mute control
ASoC: wm2200: Use rev A register patches on rev B
ASoC: bells: Correct typo in sub speaker DAI name for WM5110
ASoC: ams-delta: Convert to use snd_soc_register_card()
ASoC: omap-mcpdm: Remove OMAP revision check
ASoC: Fix wrong include for McPDM
ASoC: omap-abe-twl6040: Fix typo of Vibrator
ASoC: twl6040: Fix Stream DAPM mapping
Change event type to switch for the power and autopower switches.
Additionally, this patch aligns the keycodes with the other linkstation
boards already supported by linux.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Don't use the specific board name in a the common device tree include file.
Instead use the common name 'lsxl'.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Move the CACHE_FEROCEON_L2 test to kirkwood_l2_init, since linking
fails on the reference to feroceon_l2_init.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Based on information from the ZTE Windows drivers.
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here's the first set of fixes for v3.7-rc cycle.
DesignWare Core USB3 Driver (dwc3) got two fixes. The first one fixes a long
standing bug which would keep endpoint with BUSY flag set forever if we cancel
a transfer which has already been started by the controller. The second fix
will just switch PHYs back off when DWC3 driver is removed.
MUSB fixed a bug which would cause a Kernel Oops at least on AM3517 when
removing a device. For some reason that particular device can fall into a
situation where you have both Disconnect and Endpoint IRQs happen
simultaneously (have both bits set in IRQ_STATUS register) and, because
Disconnect Interrupt is handled before Endpoint Interrupts, we would try to
transfer data over a disconnected device, thus generating a kernel oops.
Renensas' USB DRD driver got two fixes which are a) fixing an off-by-one bug on
the pipe iterator implementation and b) fixing Interrupt Status Clear procedure
in order to properly clear a single Interrupt event without clearing (and
masking) other events we didn't handle yet.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=IlgT
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-v3.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
usb: fixes for v3.7-rc2
Here's the first set of fixes for v3.7-rc cycle.
DesignWare Core USB3 Driver (dwc3) got two fixes. The first one fixes a long
standing bug which would keep endpoint with BUSY flag set forever if we cancel
a transfer which has already been started by the controller. The second fix
will just switch PHYs back off when DWC3 driver is removed.
MUSB fixed a bug which would cause a Kernel Oops at least on AM3517 when
removing a device. For some reason that particular device can fall into a
situation where you have both Disconnect and Endpoint IRQs happen
simultaneously (have both bits set in IRQ_STATUS register) and, because
Disconnect Interrupt is handled before Endpoint Interrupts, we would try to
transfer data over a disconnected device, thus generating a kernel oops.
Renensas' USB DRD driver got two fixes which are a) fixing an off-by-one bug on
the pipe iterator implementation and b) fixing Interrupt Status Clear procedure
in order to properly clear a single Interrupt event without clearing (and
masking) other events we didn't handle yet.
This minor change adds a new system to which the "Fix Compliance Mode
on SN65LVPE502CP Hardware" patch has to be applied also.
System added:
Vendor: Hewlett-Packard. System Model: Z1
Signed-off-by: Alexis R. Cortes <alexis.cortes@ti.com>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure port data is initialised before creating sysfs attributes to
avoid a race.
A recent patch ("USB: io_ti: fix port-data memory leak") got the
sysfs-attribute creation and port-data initialisation ordering wrong.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure sysfs attributes are created at port probe.
A recent patch ("USB: iuu_phoenix: fix port-data memory leak") removed
the sysfs-attribute creation by mistake.
Reported-by: Yuanhan Liu <yuanhan.liu@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The CPUNum Field in EBase register is 10bit wide, so after 1 bit right
shift, the mask value should be 0x1ff.
Signed-off-by: jerin jacob <jerinjacobk@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4420/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
- Based on v3.7-rc1
Adds:
- missing break;s from converting if{}s to switch{}
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
iQEcBAABAgAGBQJQfu6DAAoJEAi3KVZQDZAe+UcIAIzjCYanLNeL35Y4CUB/sT0a
JzGm39H2GCrDPQz1Wuv1paApfXAB6Fia8o2NjF6BZOsWXDayIGH/4H0qFRGZrQ+2
p4NADdg3Lk5uL+Bn9kc0cyFiNIP1FktkUcleZSS2dQAZ/BY5EMj+urlttN5gSt5J
8Aj6txYleMgEKqxdtXHiJXIregia6qaRM6uqEqF9ov/La9tLfBHZgjOJ1rGg6K6f
TaUrgOMKFzn8fcp9NjXEuaHLazUM/x2QarqdSje+qoZpj+9jB4Su4bQdpblUw2TB
YPecxQsD7hAjZmDzzTzvSsQq6ZT0xKWyqRJNcLO5caSY1lNxAm4v76anb697HSo=
=3Nqp
-----END PGP SIGNATURE-----
Merge tag 'mvebu_gpio_fixes_for_v3.7' of git://git.infradead.org/users/jcooper/linux into fixes
From Jason Cooper:
- missing break;s from converting if{}s to switch{}
* tag 'mvebu_gpio_fixes_for_v3.7' of git://git.infradead.org/users/jcooper/linux:
gpio: mvebu: Add missing breaks in mvebu_gpio_irq_set_type
- Based against v3.7-rc1
- Latest changes to arch/arm/mm/cache-tauros2.c
c2b7e05 ARM: cache: add dt support for tauros2 cache
Misc. fixes for latest changes to mach-dove/
Fixes build breakage for mach-dove
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)
iQEcBAABAgAGBQJQfutwAAoJEAi3KVZQDZAeJlYH/2n8rEqGCrZuU16XVl3Hwc5q
mUkF0PexHDnGGNrgfOEAIaouG3rCTVVdj+NTqnz3gK8jaJHF06tfhpwZaxymDFzW
m4Lt45IuDvU5jEuCBm1IDHWHLro/73YepZJJRt9yAwI1DdWAhUBYLS8cd7fIoLAJ
th0TI7PObmHRVlY2mS+ByuU5wnqV5mJMMPN6oU4RzO91rNuhoQRm8WvjzEs+tSfU
GluD05p/bm3dL9Aq6146h80CZn3W4SVIKeS2l/GdQV6bqaIUvsp0F3xfzggcrcLF
rZxOom72BgnEzA1enu+adJwKY8dHxOAZ4Iuf4HUXI5DKVfVCOrmJmWfp0mS8oyc=
=RP8E
-----END PGP SIGNATURE-----
Merge tag 'mvebu_dove_late_fixes_for_v3.7' of git://git.infradead.org/users/jcooper/linux into fixes
From Jason Cooper:
Misc. fixes for latest changes to mach-dove/
Fixes build breakage for mach-dove
* tag 'mvebu_dove_late_fixes_for_v3.7' of git://git.infradead.org/users/jcooper/linux:
ARM: dove: Add crypto engine to DT
ARM: dove: Remove watchdog from DT
ARM: dove: Restructure SoC device tree descriptor
ARM: dove: Fix clock names of sata and gbe
ARM: dove: Fix tauros2 device tree init
ARM: dove: Add pcie clock support
a regression fix for local timer, and a clockdomain locking fix.
Also few minor fixes for boot time and sparse warnings.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=4meh
-----END PGP SIGNATURE-----
Merge tag 'omap-for-v3.7-rc1/fixes-take5-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
A boot problem fix for am33xx beaglebone caused by GPMC,
a regression fix for local timer, and a clockdomain locking fix.
Also few minor fixes for boot time and sparse warnings.
* tag 'omap-for-v3.7-rc1/fixes-take5-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Allow kernel to boot even if GPMC fails to reserve memory
ARM: OMAP: clockdomain: Fix locking on _clkdm_clk_hwmod_enable / disable
ARM: OMAP4: devices: fixup OMAP4 DMIC platform device error message
ARM: OMAP2+: clock data: Add dev-id for the omap-gpmc dummy fck
ARM: OMAP: resolve sparse warning concerning debug_card_init()
ARM: OMAP4: Fix twd_local_timer_register regression
This branch contains a couple small fixes for Tegra for 3.7.
* A fix for another clock rate calculation overflow
* A revert of a change that removed the "timer" clock on Tegra, coupled
with a fix for the confusing symbol name clash that triggered it.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)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=Cjt7
-----END PGP SIGNATURE-----
Merge tag 'tegra-for-3.7-fixes-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into fixes
From Stephen Warren: ARM: tegra: fixes for 3.7-rc2
This branch contains a couple small fixes for Tegra for 3.7.
* A fix for another clock rate calculation overflow
* A revert of a change that removed the "timer" clock on Tegra, coupled
with a fix for the confusing symbol name clash that triggered it.
* tag 'tegra-for-3.7-fixes-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: tegra: add tegra_timer clock
ARM: tegra: rename tegra system timer
ARM: tegra30: clk: Fix output_rate overflow
Signed-off-by: Olof Johansson <olof@lixom.net>
Earlier without cpuidle framework on pseries, the native arch
idle routine comprised of both snooze and nap
states. smt_snooze_delay variable was used to delay
the idle process entry to deeper idle state like nap.
With the coming of cpuidle, this arch specific idle was replaced
by two different idle routines, one for supporting snooze and other
for nap. This enabled addition of more
low level idle states on pseries in the future.
On adopting the generic cpuidle framework for POWER systems,
the decision of which idle state to choose from, given a predicted
idle time is taken by the menu governor based on
target_residency and exit_latency of the idle states.
target_residency is the minimum time to be resident in that idle state.
Exit_latency is time taken to exit out of idle state.
Deeper the idle state, both the target residency and exit latency
would be higher.
In the current design, smt_snooze_delay is used as target_residency
for the snooze state which is incorrect, as it is not the
minimum but the maximum duration to be in snooze state.
This would result in the governor in taking bad decision,
as presently target_residency of nap < target_residency of snooze
inspite of nap being deeper idle state.
This patch aims to fix this problem by replacing the smt_snooze_delay loop
in snooze state, with the need_resched() as the governor is aware of
entry and exit of various idle transitions based on which
next idle time prediction.
The governor is intelligent enough to determine the idle state the needs to
be transitioned to and maintains a whole of heuristics including
io load, previous idle states predictions etc for the same, based on
which idle state entry decision is taken.
With this fix, of setting target_residency of snooze to 0
nap to smt_snooze_delay
if the predicted idle time is less
than smt_snooze_delay (target_residency of nap)
value governor would pick snooze state, else nap. This adhers to the
previous native idle design.
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
smt_snooze_delay was designed to delay idle loop's nap entry
in the native idle code before it got ported over to use as part of
the cpuidle framework.
A -ve value assigned to smt_snooze_delay should result in
busy looping, in other words disabling the entry to nap state.
- https://lists.ozlabs.org/pipermail/linuxppc-dev/2010-May/082450.html
This particular functionality can be achieved currently by
echo 1 > /sys/devices/system/cpu/cpu*/state1/disable
but it is broken when one assigns -ve value to the smt_snooze_delay
variable either via sysfs entry or ppc64_cpu util.
This patch aims to fix this, by disabling nap state when smt_snooze_delay
variable is set to -ve value.
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Remove the redundant target residency initialisation in pseries_cpuidle_driver_init().
This is currently over-writing the residency time updated as part of the static
table, resulting in all the idle states having the same target
residency of 100us which is incorrect. This may result in the menu governor making
wrong state decisions.
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Fix build failure for powerpc KVM by adding missing VPN_SHIFT definition
and the ';'
arch/powerpc/kvm/book3s_32_mmu_host.c: In function 'kvmppc_mmu_map_page':
arch/powerpc/kvm/book3s_32_mmu_host.c:176: error: 'VPN_SHIFT' undeclared (first use in this function)
arch/powerpc/kvm/book3s_32_mmu_host.c:176: error: (Each undeclared identifier is reported only once
arch/powerpc/kvm/book3s_32_mmu_host.c:176: error: for each function it appears in.)
arch/powerpc/kvm/book3s_32_mmu_host.c:178: error: expected ';' before 'next_pteg'
arch/powerpc/kvm/book3s_32_mmu_host.c:190: error: label 'next_pteg' used but not defined
make[1]: *** [arch/powerpc/kvm/book3s_32_mmu_host.o] Error 1
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The capability defines have moved causing the auto generated names
of capabilities that apparmor uses in logging to be incorrect.
Fix the autogenerated table source to uapi/linux/capability.h
Reported-by: YanHong <clouds.yan@gmail.com>
Reported-by: Krzysztof Kolasa <kkolasa@winsoft.pl>
Analyzed-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
alloc_tty_driver was always assumed to succeed. Add code to check the
return value and return -ENOMEM if alloc_tty_driver fails.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
register_proc_table and unregister_proc_table didn't deal with the
possibility that the *table pointer could be NULL. Check for this and
return if table is NULL.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The previous definition of for_each_*() would always include the very
first object within the list, irrespective of whether it was marked
deleted, since the deleted flag was not checked on the first object,
but only on any "next" object.
Fix for_each_*() to check the deleted flag in the loop body every
iteration to correct this.
(upstream dtc commit 1762ab42ef77db7ab2776d0d6cba3515150f518a)
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
drivers/of/address.c:66:29: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:66:29: expected restricted __be32 const [usertype] *cell
drivers/of/address.c:66:29: got unsigned int [usertype] *addr
drivers/of/address.c:87:32: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:87:32: expected restricted __be32 const [usertype] *cell
drivers/of/address.c:87:32: got unsigned int [usertype] *addr
drivers/of/address.c:91:30: warning: incorrect type in assignment (different base types)
drivers/of/address.c:91:30: expected unsigned int [unsigned] [usertype] <noident>
drivers/of/address.c:91:30: got restricted __be32 [usertype] <noident>
drivers/of/address.c:92:22: warning: incorrect type in assignment (different base types)
drivers/of/address.c:92:22: expected unsigned int [unsigned] [usertype] <noident>
drivers/of/address.c:92:22: got restricted __be32 [usertype] <noident>
drivers/of/address.c:147:35: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:147:35: expected restricted __be32 const [usertype] *addr
drivers/of/address.c:147:35: got unsigned int [usertype] *addr
drivers/of/address.c:157:34: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:157:34: expected restricted __be32 const [usertype] *cell
drivers/of/address.c:157:34: got unsigned int [usertype] *
drivers/of/address.c:256:29: warning: restricted __be32 degrades to integer
drivers/of/address.c:256:36: warning: restricted __be32 degrades to integer
drivers/of/address.c:262:34: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:262:34: expected restricted __be32 const [usertype] *cell
drivers/of/address.c:262:34: got unsigned int [usertype] *
drivers/of/address.c:372:41: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:372:41: expected restricted __be32 const [usertype] *cell
drivers/of/address.c:372:41: got unsigned int [usertype] *addr
drivers/of/address.c:395:53: warning: incorrect type in argument 2 (different base types)
drivers/of/address.c:395:53: expected restricted __be32 const [usertype] *addr
drivers/of/address.c:395:53: got unsigned int [usertype] *addr
drivers/of/address.c:443:50: warning: incorrect type in argument 2 (different base types)
drivers/of/address.c:443:50: expected restricted __be32 const [usertype] *addr
drivers/of/address.c:443:50: got unsigned int *<noident>
drivers/of/address.c:455:49: warning: incorrect type in argument 1 (different base types)
drivers/of/address.c:455:49: expected restricted __be32 const [usertype] *cell
drivers/of/address.c:455:49: got unsigned int *<noident>
drivers/of/address.c:480:60: warning: incorrect type in argument 2 (different base types)
drivers/of/address.c:480:60: expected restricted __be32 const [usertype] *addr
drivers/of/address.c:480:60: got unsigned int *<noident>
drivers/of/address.c:412:5: warning: symbol '__of_translate_address' was not declared. Should it be static?
drivers/of/address.c:520:14: error: symbol 'of_get_address' redeclared with different type (originally declared at include/linux/of_address.h:22) - different base types
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Fixes build error on s3c6400_defconfig, introduced by commit
06455bbcab, "dt/s3c64xx/spi: Use
of_get_child_by_name to get a named child".
drivers/spi/spi-s3c64xx.c: In function 's3c64xx_get_slave_ctrldata':
drivers/spi/spi-s3c64xx.c:838:2: error: implicit declaration of function
'of_get_child_by_name' [-Werror=implicit-function-declaration]
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by moving port data allocation and
deallocation to port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Note that the write waitqueue was initialised but never used.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by moving port data allocation and
deallocation to port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Note that the write waitqueue was initialised but never used.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by moving port data allocation and
deallocation to port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix port-data memory leak by replacing attach and release with
port_probe and port_remove.
Since commit 0998d06310 (device-core: Ensure drvdata = NULL when no
driver is bound) the port private data is no longer freed at release as
it is no longer accessible.
Compile-only tested.
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current code assumes that CSIZE is 0000060, which appears to be
wrong on some arches (such as powerpc).
Signed-off-by: Nicolas Boullis <nboullis@debian.org>
Acked-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Device-tree probed devices don't get a dev.dma_mask set. This patch
sets a default 32bit mask on arch-vt8500 when using devicetree.
Without this patch, arch-vt8500 cannot detect ehci attached devices.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
