This patch register the dma controller with generic dma helpers only
in DT case. This also adds some extra error handling in the driver.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Reported-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Issues raised in last series to propose this have now been resolved
so there should be no reason this driver cannot graduate from staging.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Now the mysterious NOSTART flag is gone from the read, we can use the
i2c_smbus_read_byte/word/i2c_block_data functions instead of the
local reimplementation of these standard functions.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
This flag makes no sense whatsoever where it is.
Documentation/i2c/i2c-protocol states:
If you set the I2C_M_NOSTART variable for the first partial message,
we do not generate Addr, but we do generate the startbit S. This will
probably confuse all other clients on your bus, so don't try this.
This is exactly what is going on here. Likelihood given that the
driver never checked for this protocol mangling being available is that
it wasn't present on the test boards and hence this flag was simply
ignored. No indication of why it would be necessary has been found in
the datasheets.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Reentrancy into the clock framework is necessary for clock operations
that result in nested calls to the clk api. A common example is a clock
that is prepared via an i2c transaction, such as a clock inside of a
discrete audio chip or a power management IC. The i2c subsystem itself
will use the clk api resulting in a deadlock:
clk_prepare(audio_clk)
i2c_transfer(..)
clk_prepare(i2c_controller_clk)
The ability to reenter the clock framework prevents this deadlock.
Other use cases exist such as allowing .set_rate callbacks to call
clk_set_parent to achieve the best rate, or to save power in certain
configurations. Yet another example is performing pinctrl operations
from a clk_ops callback. Calls into the pinctrl subsystem may call
clk_{un}prepare on an unrelated clock. Allowing for nested calls to
reenter the clock framework enables both of these use cases.
Reentrancy is implemented by two global pointers that track the owner
currently holding a global lock. One pointer tracks the owner during
sleepable, mutex-protected operations and the other one tracks the owner
during non-interruptible, spinlock-protected operations.
When the clk framework is entered we try to hold the global lock. If it
is held we compare the current task against the current owner; a match
implies a nested call and we reenter. If the values do not match then
we block on the lock until it is released.
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: Rajagopal Venkat <rajagopal.venkat@linaro.org>
Cc: David Brown <davidb@codeaurora.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Create locking helpers for the global mutex and global spinlock. The
definitions of these helpers will be expanded upon in the next patch
which introduces reentrancy into the locking scheme.
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: Rajagopal Venkat <rajagopal.venkat@linaro.org>
Cc: David Brown <davidb@codeaurora.org>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
This patch finally adds the WM8850 SoC to the multi_v7_defconfig.
We don't have a seperate defconfig for this SoC as it is only
available as a multiplatform option.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Olof Johansson <olof@lixom.net>
Convert AMD erratum 400 to the bug infrastructure. Then, retract all
exports for modules since they're not needed now and make the AMD
erratum checking machinery local to amd.c. Use forward declarations to
avoid shuffling too much code around needlessly.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1363788448-31325-7-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Convert the AMD erratum 383 testing code to the bug infrastructure. This
allows keeping the AMD-specific erratum testing machinery private to
amd.c and not export symbols to modules needlessly.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1363788448-31325-6-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
We add another 32-bit vector at the end of the ->x86_capability
bitvector which collects bugs present in CPUs. After all, a CPU bug is a
kind of a capability, albeit a strange one.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1363788448-31325-2-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Make sure that msg pointer is set back to error value in case of
MSG_COPY flag is set and desired message to copy wasn't found. This
garantees that msg is either a error pointer or a copy address.
Otherwise the last message in queue will be freed without unlinking from
the queue (which leads to memory corruption) and the dummy allocated
copy won't be released.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Provide RESET and Power regulators for the USB PHY,
the USB Host port mode and the PHY device.
Also provide pin multiplexer information for USB host
pins.
CC: Benoît Cousson <b-cousson@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulator
and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulator
and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulator
and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulator
and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulator
and NOP PHY device. VAUX2 supplies the PHY's VCC.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulator
and the NOP PHY device. VAUX2 supplies the PHY's VCC.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulators
and the NOP PHY devices.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulators
and the NOP PHY devices.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulators
and the NOP PHY devices.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulators
and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's VCC and RESET
regulators and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulators
and the NOP PHY devices.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's RESET regulators
and the NOP PHY devices.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's VCC and RESET
regulators and the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Use usbhs_init_phys() to register the PHY's VCC and RESET
regulators and the NOP PHY device.
Get rid of managing the PHY clock as it will be done by the PHY driver.
For that to work we create a clock alias that links the PHY clock name
to the PHY device name.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This helper allows board support code to add the PHY's
VCC and RESET regulators which are GPIO controlled as well
as the NOP PHY device.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
In efi_init() memory aligns in IA64_GRANULE_SIZE(16M). If set "crashkernel=1024M-:600M"
and use sparse memory model, when crash kernel booting it changes [128M-728M] to [128M-720M].
But initrd memory is in [709M-727M], and virt_addr_valid() *can not* check the invalid pages
when freeing initrd memory, because there are some pages missed at the end of the section,
and this causes error.
...
Unpacking initramfs...
Freeing initrd memory: 19648kB freed
BUG: Bad page state in process swapper pfn:02d00
page:e0000000102dd800 flags:(null) count:0 mapcount:1 mapping:(null) index:0
Call Trace:
[<a000000100018dc0>] show_stack+0x80/0xa0
sp=e000000021e8fbd0 bsp=e000000021e81360
[<a00000010090fcc0>] dump_stack+0x30/0x50
sp=e000000021e8fda0 bsp=e000000021e81348
[<a0000001001a3180>] bad_page+0x280/0x380
sp=e000000021e8fda0 bsp=e000000021e81308
[<a0000001001a8740>] free_hot_cold_page+0x3a0/0x5c0
sp=e000000021e8fda0 bsp=e000000021e812a0
[<a0000001001a8a50>] free_hot_page+0x30/0x60
sp=e000000021e8fda0 bsp=e000000021e81280
[<a0000001001a8b30>] __free_pages+0xb0/0xe0
sp=e000000021e8fda0 bsp=e000000021e81258
[<a0000001001a8c00>] free_pages+0xa0/0xc0
sp=e000000021e8fda0 bsp=e000000021e81230
[<a000000100bb40c0>] free_initrd_mem+0x230/0x290
sp=e000000021e8fda0 bsp=e000000021e811d8
[<a000000100ba6620>] populate_rootfs+0x1c0/0x280
sp=e000000021e8fdb0 bsp=e000000021e811a0
[<a00000010000ac30>] do_one_initcall+0x3b0/0x3e0
sp=e000000021e8fdb0 bsp=e000000021e81158
[<a000000100ba0a90>] kernel_init+0x3f0/0x4b0
sp=e000000021e8fdb0 bsp=e000000021e81108
[<a000000100016890>] kernel_thread_helper+0xd0/0x100
sp=e000000021e8fe30 bsp=e000000021e810e0
[<a00000010000a4c0>] start_kernel_thread+0x20/0x40
sp=e000000021e8fe30 bsp=e000000021e810e0
...
In "http://marc.info/?l=linux-arch&m=136147092429314&w=2" Tony said:
"Perhaps in Documentation/kdump/kdump.txt (which the crashkernel entry
in kernel-parameters.txt points at). The ia64 section of kdump.txt
notes that the start address will be rounded up to a GRANULE boundary,
but doesn't talk about restrictions on the size."
This patch add size restriction to the documentation of kdump.
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
I got a "sched_setaffinity:: Invalid argument" error when using
err_injection_tool to inject error on a system with over 32 cpus.
Error information when injecting an error on a system with over 32 cpus:
$ ./err_injection_tool -i
/sys/devices/system/cpu/cpu0/err_inject//err_type_info
Begine at Tue Mar 26 11:20:08 2013
Configurations:
On cpu32: loop=10, interval=5(s) err_type_info=4101,err_struct_info=95
Error sched_setaffinity:: Invalid argument
All done
This because there is overflow when calculating the cpumask: the
type of (1<<k) is int, while mask[j] is unsigned long. When k > 31,
(1<<k) is truncated to ZERO, resulting in a unexpected cpumask.
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
numa_clear_node() function is not implemented under IA64,
it will be called in unmap_cpu_on_node() in mm/memory_hotplug.c.
This cause build error under IA64, this patch adds numa_clear_node()
in IA64 to fix this problem.
[Added __cpuinit notation to numa_clear_node() to keep linker happy -Tony]
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Fixes the following errors:
ERROR: do not initialise statics to 0 or NULL
ERROR: space required after that ',' (ctx:VxV)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Back 2010 during a revamp of the irq code some initializations
were moved from ia64_mca_init() to ia64_mca_late_init() in
commit c75f2aa13f
Cannot use register_percpu_irq() from ia64_mca_init()
But this was hideously wrong. First of all these initializations
are now down far too late. Specifically after all the other cpus
have been brought up and initialized their own CMC vectors from
smp_callin(). Also ia64_mca_late_init() may be called from any cpu
so the line:
ia64_mca_cmc_vector_setup(); /* Setup vector on BSP */
is generally not executed on the BSP, and so the CMC vector isn't
setup at all on that processor.
Make use of the arch_early_irq_init() hook to get this code executed
at just the right moment: not too early, not too late.
Reported-by: Fred Hartnett <fred.hartnett@hp.com>
Tested-by: Fred Hartnett <fred.hartnett@hp.com>
Cc: stable@kernel.org # v2.6.37+
Signed-off-by: Tony Luck <tony.luck@intel.com>
Each iommu window can have access permissions associated with it. Extended the
window_enable API to incorporate window access permissions.
In case of PAMU each window can have its specific set of permissions.
Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
This is required in case of PAMU, as it can support a window size of up
to 64G (even on 32bit).
Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
commit 00cfec3748 (net: add a synchronize_net() in
netdev_rx_handler_unregister())
allows us to remove the synchronized_net() call from del_nbp()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Veaceslav Falico <vfalico@redhat.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 6bbb6d9 "net/mlx4_en: Optimize Rx fast path filter checks" introduced a regression
under which the MAC address read from the card was not converted correctly
(the most significant byte was not handled), fix that.
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Yan Burman <yanb@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that netdev_rx_handler_unregister contains synchronize_net(), we need
to call it outside of bond->lock, cause it might sleep. Also, remove the
already unneded synchronize_net().
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After a quiet set of fixes for 3.9-rc4, a lot of people woke up and sent
urgent fixes for 3.9. I pushed back on a number of them that got
deferred to 3.10, but these are the ones that seemed important.
Regression in 3.9:
- Multiple regressions in OMAP2+ clock cleanup
- SH-Mobile frame buffer bug fix that merged here because of maintainer MIA
- ux500 prcmu changes broke DT booting
- MMCI duplicated regulator setup on ux500
- New ux500 clock driver broke ethernet on snowball
- Local interrupt driver for mvebu broke ethernet
- MVEBU GPIO driver did not get set up right on Orion DT
- incorrect interrupt number on Orion crypto for DT
Long-standing bugs, including candidates for stable:
- Kirkwood MMC needs to disable invalid card detect pins
- MV SDIO pinmux was wrong on Mirabox
- GoFlex Net board file needs to set NAND chip delay
- MSM timer restart race
- ep93xx early debug code broke in 3.7
- i.MX CPU hotplug race
- Incorrect clock setup for OMAP1 USB
- Workaround for bad clock setup by some old OMAP4 boot loaders
- Static I/O mappings on cns3xxx since 3.2
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC bug fixes from Arnd Bergmann:
"After a quiet set of fixes for 3.9-rc4, a lot of people woke up and
sent urgent fixes for 3.9. I pushed back on a number of them that got
deferred to 3.10, but these are the ones that seemed important.
Regression in 3.9:
- Multiple regressions in OMAP2+ clock cleanup
- SH-Mobile frame buffer bug fix that merged here because of
maintainer MIA
- ux500 prcmu changes broke DT booting
- MMCI duplicated regulator setup on ux500
- New ux500 clock driver broke ethernet on snowball
- Local interrupt driver for mvebu broke ethernet
- MVEBU GPIO driver did not get set up right on Orion DT
- incorrect interrupt number on Orion crypto for DT
Long-standing bugs, including candidates for stable:
- Kirkwood MMC needs to disable invalid card detect pins
- MV SDIO pinmux was wrong on Mirabox
- GoFlex Net board file needs to set NAND chip delay
- MSM timer restart race
- ep93xx early debug code broke in 3.7
- i.MX CPU hotplug race
- Incorrect clock setup for OMAP1 USB
- Workaround for bad clock setup by some old OMAP4 boot loaders
- Static I/O mappings on cns3xxx since 3.2"
* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: cns3xxx: fix mapping of private memory region
arm: mvebu: Fix pinctrl for Armada 370 Mirabox SDIO port.
arm: orion5x: correct IRQ used in dtsi for mv_cesa
arm: orion5x: fix orion5x.dtsi gpio parameters
ARM: Kirkwood: fix unused mvsdio gpio pins
arm: mvebu: Use local interrupt only for the timer 0
ARM: kirkwood: Fix chip-delay for GoFlex Net
ARM: ux500: Enable the clock controlling Ethernet on Snowball
ARM: ux500: Stop passing ios_handler() as an MMCI power controlling call-back
ARM: ux500: Apply the TCPM and TCDM locations and sizes to dbx5x0 DT
fbdev: sh_mobile_lcdc: fixup B side hsync adjust settings
ARM: OMAP: clocks: Delay clk inits atleast until slab is initialized
ARM: imx: fix sync issue between imx_cpu_die and imx_cpu_kill
ARM: msm: Stop counting before reprogramming clockevent
ARM: ep93xx: Fix wait for UART FIFO to be empty
ARM: OMAP4: PM: fix PM regression introduced by recent clock cleanup
ARM: OMAP3: hwmod data: keep MIDLEMODE in force-standby for musb
ARM: OMAP4: clock data: lock USB DPLL on boot
ARM: OMAP1: fix USB host on 1710
Current driver does not clear the IOMMU event log interrupt bit
in the IOMMU status register after processing an interrupt.
This causes the IOMMU hardware to generate event log interrupt only once.
This has been observed in both IOMMU v1 and V2 hardware.
This patch clears the bit by writing 1 to bit 1 of the IOMMU
status register (MMIO Offset 2020h)
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
In order to migrate the PMU state correctly, we need to restore the
values of MSR_CORE_PERF_GLOBAL_STATUS (a read-only register) and
MSR_CORE_PERF_GLOBAL_OVF_CTRL (which has side effects when written).
We also need to write the full 40-bit value of the performance counter,
which would only be possible with a v3 architectural PMU's full-width
counter MSRs.
To distinguish host-initiated writes from the guest's, pass the
full struct msr_data to kvm_pmu_set_msr.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
"Since commit 0536bdf33f (ARM: move iotable mappings within the vmalloc
region), [...] the pre-defined iotable mappings is not in the vmalloc
region. [...] move the iotable mappings into the vmalloc region, and
merge the MPCore private memory region (containing the SCU, the GIC and
the TWD) as a single region."
Plus there is a small cosmetic fix, also from Mac Lin.
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Merge tag 'v3.9-rc1_cns3xxx_fixes' of git://git.infradead.org/users/cbou/linux-cns3xxx into next/fixes-non-critical
From Anton Vorontsov <anton@enomsg.org>:
This tag includes Mac Lin's work to revive CNS3xxx booting:
"Since commit 0536bdf33f (ARM: move iotable mappings within the vmalloc
region), [...] the pre-defined iotable mappings is not in the vmalloc
region. [...] move the iotable mappings into the vmalloc region, and
merge the MPCore private memory region (containing the SCU, the GIC and
the TWD) as a single region."
Plus there is a small cosmetic fix, also from Mac Lin.
* tag 'v3.9-rc1_cns3xxx_fixes' of git://git.infradead.org/users/cbou/linux-cns3xxx:
ARM: cns3xxx: remove unused virtual address and iotable defines
ARM: cns3xxx: fix mapping of private memory region
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
