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There is no reason to break a line shorter than 80 columns.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Since commit 323de9efdf3e ("pinctrl: make pinctrl_register() return proper
error code"), pinctrl_register returns an error code rather than NULL on
failure. Update a driver that was introduced more recently.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e,e1,e2;
@@
e = pinctrl_register(...)
... when != e = e1
if (
- e == NULL
+ IS_ERR(e)
) {
...
return
- e2
+ PTR_ERR(e)
;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Since commit 323de9efdf3e ("pinctrl: make pinctrl_register() return proper
error code"), pinctrl_register returns an error code rather than NULL on
failure. Update some drivers that were introduced more recently.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression e,e1,e2;
@@
e = pinctrl_register(...)
... when != e = e1
if (
- e == NULL
+ IS_ERR(e)
) {
...
return
- e2
+ PTR_ERR(e)
;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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If gpio-omap probe fails with -EPROBE_DEFER, the GPIO numbering
keeps increasing. Only increase the gpio count if gpiochip_add()
was successful as otherwise the numbers will increase for each
probe attempt.
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The GPIO documentation mentions that GPIOs are mapped by defining a
<function>-gpios property in the consumer device's node but a -gpio
sufix is also supported after commit:
dd34c37aa3e8 ("gpio: of: Allow -gpio suffix for property names")
Update the documentation to match the implementation.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Currently we gpio-omap breaks if gpiochip_add() returns -EPROBE_DEFER:
[ 0.570000] gpiochip_add: GPIOs 0..31 (gpio) failed to register
[ 0.570000] omap_gpio 48310000.gpio: Could not register gpio chip -517
...
[ 3.670000] omap_gpio 48310000.gpio: Unbalanced pm_runtime_enable!
Let's fix the issue by adding the missing pm_runtime_put() on error.
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The driver has a I2C device id table that is used to create the module
aliases and also "sx150x" isn't a supported I2C id, so it's never used.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The con_id parameter has to match the GPIO description and is automatically
extended by the GPIO suffix if not NULL. I had to look into the code to
understand this and properly find the GPIO I've been looking for, so document
this.
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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With commit 39b2bbe3d715 ("gpio: add flags argument to gpiod_get*()
functions") the gpiod_get*() functions got a 'flags' parameter. Reflect
this in the documentation, too.
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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It's possible to have gpio chips hanging off unreliable remote buses
where the get() operation will fail to acquire a readout of the current
gpio state. Propagate these errors to the consumer so that they can
act on, retry or ignore these failing reads, instead of treating them as
the line being held high.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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8cd1470("gpio: rcar: Add r8a7795 (R-Car H3) support") added
GPIO support for r8a7795. r8a7795 based on CONFIG_ARM64.
OTOH, GPIO_RCAR driver can be compiled fine on non-ARM.
This patch removed ARM dependency for it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Need to check return value of irq_alloc_generic_chip, because
it may return NULL.
1. Change mxs_gpio_init_gc return type from void to int.
2. Add a new lable out_irqdomain_remove to remove the irq domain
when mxc_gpio_init_gc fail.
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Need to check return value of irq_alloc_generic_chip, because
it may return NULL.
1. Change mxc_gpio_init_gc return type from void to int.
2. Add a new lable out_irqdomain_remove to remove the irq domain
when mxc_gpio_init_gc fail.
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
[Manually rebased]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The power table is not being freed on error from cpufreq_cooling
register or when unregistering. Free it.
Fixes: c36cf0717631 ("thermal: cpu_cooling: implement the power cooling device API")
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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build_dyn_power_table() allocates the power table while holding
rcu_read_lock. kcalloc using GFP_KERNEL may sleep, so it can't be
called in an RCU read-side path.
Move the rcu protection to the part of the function that really needs
it: the part that handles the dev_pm_opp pointer received from
dev_pm_opp_find_freq_ceil(). In the unlikely case that there is an OPP
added to the cpu while this function is running, return -EAGAIN.
Fixes: c36cf0717631 ("thermal: cpu_cooling: implement the power cooling device API")
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luis@debethencourt.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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None of the patches are reaching Viresh or Daniel directly as
get_maintainers doesn't report us as maintainers. Looks like file header
or history of commits isn't able to do that properly.
Add a separate entry for cpu_cooling driver in MAINTAINERS.
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Acked-by: Amit Daniel Kachhap <amit.kachhap@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Move the dependencies to menu, so we avoid showing it wrongly.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to ti-soc driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to qcom_spmi driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to exynos driver to facilitate
maintenance.
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to armada driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to dove driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to kirkwood driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to rockchip driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: linux-pm@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to spear driver to facilitate
maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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Adding COMPILE_TEST flag to hisi driver to facilitate maintenance.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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thermal_zone_of_sensor_register is documented as returning a pointer
to either a valid thermal_zone_device on success, or a corresponding
ERR_PTR() value.
In contrast, the function returns NULL when THERMAL_OF is configured
off. Fix this.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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If the pool is configured with 'ignore_discard' its discard support is
disabled. The pool's thin devices should also have queue_limits that
reflect discards are disabled.
Fixes: 34fbcf62 ("dm thin: range discard support")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 4.1+
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If the default PM Domain using PM_CLK is used for PM runtime, the real
Clock Domain cannot be registered from DT later.
Hence do not enable it when running a multi-platform kernel with genpd
support on R-Car or RZ. The CPG/MSTP Clock Domain driver will take care
of PM runtime management of the module clocks.
Now most multi-platform ARM shmobile platforms (SH-Mobile, R-Mobile,
R-Car, RZ) use DT-based PM Domains to take care of PM runtime management
of the module clocks, simplify the platform logic by replacing the
explicit SoC checks by a single check for the presence of MSTP clocks in
DT.
Backwards-compatiblity with old DTs (mainly for R-Car Gen2) is provided
by checking for the presence of a "#power-domain-cells" property in DT.
The default PM Domain is still needed for:
- backwards-compatibility with old DTs that lack PM Domain properties,
- the CONFIG_PM=n case,
- legacy (non-DT) ARM/shmobile platforms without genpd support
(r8a7778, r8a7779),
- legacy SuperH.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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EMMA Mobile EV2 doesn't have MSTP clocks. All its device drivers manage
clocks explicitly, without relying on Runtime PM, so it doesn't need the
legacy default PM Domain.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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There is no code to handle an error return in visornic, when it tries to
register with visorbus. This patch handles an error return from
visorbus_register_visor_driver() by dropping out of initialization.
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In cases where visorbus is compiled directly into the kernel, if
visorbus registration fails for any reason, it is still possible for
other drivers to call visorbus_register_visor_driver(), which could
cause an oops. Prevent this by saving the result of the call to
create_bus() in a static variable, and return an error code when the bus
hasn't been registered successfully.
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If there is an error in registering driver attributes, unregister
the driver as well.
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The receive byte statistics was wrong in /proc/net/dev.
Move the collection of statistics after the proper amount
of bytes has been calculated and make sure you add it to
rx_bytes instead of just replacing it.
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Noticed we were not unregistering the netdevice if we failed to
create the debugfs entries. This patch fixes that problem.
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Calling the setup of the SPI master directly causes a NULL pointer
dereference with master drivers without a separate setup function.
This problem is reproduceable on ARM MXS platform.
So fix this issue by using spi_setup() instead.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since the result of the setup function isn't adequate to check
9-bit SPI support, we better check bits_per_word_mask. Btw this
change avoids a NULL pointer dereference with master drivers
without a separate setup function.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that the lustre.org domain has been liberated we can again
use that for the main website URL and mailing list.
Also update the URL for userspace tools downloads and Git repo.
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We discussed a bit with the folks on the Cc: list below what to do
with ION. Two big take-aways:
- High-performance drivers (like gpus) always want to play tricks with
coherency and will lie to the dma api (radeon, nouveau, i915 gpu
drivers all do so in upstream). What needs to be done here is fill
gaps in dma-buf so that we can do this without breaking the dma-api
expections of other clients like v4l. The consesus is that hw won't
stop needing these tricks anytime soon.
- Placement constraints for shared buffers won't be solved any other
way than through something platform-specific like ion with
platform-specific knowledge in userspace in something like gralloc.
For general-purpose devices where this assumption would be painful
for userspace (like servers) the consensus is that such devices will
have proper MMUs where placement constraint handling is fairly
irrelevant.
Hence it is reasonable to destage ion as-is without changing the
overall design to enable these use-cases and just fixing up a these
few fairly minor things. Since there won't relly be an open-source
userspace for ion (and hence drm maintainers won't take it) the
proposal is to eventually move it to drivers/android/ion.[hc]. Laura
would be ok with being maintainer once this is all done and ion is
destaged.
Note that Thiago is working on exposing the cpu cache flushing for
cpu access from userspace through mmaps so this is alread in progress.
Also adding him to the Cc: list.
v2: Add ION_IOC_IMPORT to the list of ioctl that probably should go.
Cc: Laura Abbott <labbott@redhat.com>
Cc: sumit.semwal@linaro.org
Cc: laurent.pinchart@ideasonboard.com
Cc: ghackmann@google.com
Cc: robdclark@gmail.com
Cc: david.brown@arm.com
Cc: romlem@google.com
Cc: Tiago Vignatti <tiago.vignatti@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If NO_DMA=y:
ERROR: "dma_free_coherent" [drivers/staging/most/mostcore/mostcore.ko] undefined!
ERROR: "dma_alloc_coherent" [drivers/staging/most/mostcore/mostcore.ko] undefined!
As all MOST sub drivers use DMA functionality, add a dependency on
HAS_DMA to MOSTCORE, and to MOST, which selects MOSTCORE.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix kconfig dependency warning and build errors.
warning: (HDM_USB) selects AIM_NETWORK which has unmet direct dependencies (STAGING && MOST && NET)
drivers/built-in.o: In function `aim_resume_tx_channel':
networking.c:(.text+0xd6f7a2): undefined reference to `netif_tx_wake_queue'
drivers/built-in.o: In function `aim_rx_data':
networking.c:(.text+0xd6f8c5): undefined reference to `__netdev_alloc_skb'
networking.c:(.text+0xd6f99a): undefined reference to `skb_put'
networking.c:(.text+0xd6fa44): undefined reference to `eth_type_trans'
networking.c:(.text+0xd6fa6f): undefined reference to `netif_rx'
drivers/built-in.o: In function `most_nd_setup':
networking.c:(.text+0xd6fad2): undefined reference to `ether_setup'
drivers/built-in.o: In function `most_nd_set_mac_address':
networking.c:(.text+0xd6fb0f): undefined reference to `eth_mac_addr'
drivers/built-in.o: In function `most_nd_open':
networking.c:(.text+0xd6fd37): undefined reference to `netif_tx_wake_queue'
drivers/built-in.o: In function `aim_probe_channel':
networking.c:(.text+0xd6febb): undefined reference to `alloc_netdev_mqs'
networking.c:(.text+0xd6ff18): undefined reference to `register_netdev'
networking.c:(.text+0xd6ff4a): undefined reference to `free_netdev'
drivers/built-in.o: In function `most_net_rm_netdev_safe.isra.0':
networking.c:(.text+0xd6ffcf): undefined reference to `unregister_netdev'
networking.c:(.text+0xd6ffdf): undefined reference to `free_netdev'
drivers/built-in.o: In function `most_nd_start_xmit':
networking.c:(.text+0xd70390): undefined reference to `kfree_skb'
drivers/built-in.o: In function `most_deliver_netinfo':
(.text+0xd70499): undefined reference to `netif_tx_wake_queue'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Christian Gromm <christian.gromm@microchip.com>
Cc: Michael Fabry <Michael.Fabry@microchip.com>
Cc: Christian Gromm <chris@engineersdelight.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The original patch introducing this header wrote the number of CPUs available
and online in one order and then swapped those values when reading, fix it.
Before:
# perf record usleep 1
# perf report --header-only | grep 'nrcpus \(online\|avail\)'
# nrcpus online : 4
# nrcpus avail : 4
# echo 0 > /sys/devices/system/cpu/cpu2/online
# perf record usleep 1
# perf report --header-only | grep 'nrcpus \(online\|avail\)'
# nrcpus online : 4
# nrcpus avail : 3
# echo 0 > /sys/devices/system/cpu/cpu1/online
# perf record usleep 1
# perf report --header-only | grep 'nrcpus \(online\|avail\)'
# nrcpus online : 4
# nrcpus avail : 2
After the fix, bringing back the CPUs online:
# perf report --header-only | grep 'nrcpus \(online\|avail\)'
# nrcpus online : 2
# nrcpus avail : 4
# echo 1 > /sys/devices/system/cpu/cpu2/online
# perf record usleep 1
# perf report --header-only | grep 'nrcpus \(online\|avail\)'
# nrcpus online : 3
# nrcpus avail : 4
# echo 1 > /sys/devices/system/cpu/cpu1/online
# perf record usleep 1
# perf report --header-only | grep 'nrcpus \(online\|avail\)'
# nrcpus online : 4
# nrcpus avail : 4
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: fbe96f29ce4b ("perf tools: Make perf.data more self-descriptive (v8)")
Link: http://lkml.kernel.org/r/20150911153323.GP23511@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The ddc-i2c-bus property was missing from the veyron dtsi file since
downstream the ddc-i2c-bus was still being specified in rk3288.dtsi and
nobody noticed when the veyron dtsi was sent upstream. Add it.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Commit 03fbf488cece ("spi: pxa2xx: Differentiate Intel LPSS types") caused
build error here because it removed the type LPSS_SSP and I didn't notice
the type was used here too.
I believe commit a6e56c28a178 ("ARM: pxa: ssp: add DT bindings") added it
accidentally by copying all enum pxa_ssp_type types from
include/linux/pxa2xx_ssp.h even LPSS_SSP was for Intel LPSS SPI devices.
Fix the build error by removing this incorrect binding.
Fixes: 03fbf488cece ("spi: pxa2xx: Differentiate Intel LPSS types")
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reported-by: Axel Lin <axel.lin@ingics.com>
Cc: <stable@vger.kernel.org> # 4.2
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
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After the conversion of pxa architecture to common clock framework, the
NAND clock can be disabled on startup if no nand driver claims it.
In this case, it happens that if the bootloader used the NAND and set
the DFI arbitration bit, the next access to a static memory controller
area, such as an ethernet card, the system bus will stall, and the core
will be stalled forever.
Fix this by clearing the DFI arbritration bit in pxa3xx startup. The bit
will be enabled the pxa3xx-nand driver on need anyway. The only left
requirement is that upon pxa3xx-nand removal, the bit should be cleared
before the clock is disabled.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
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We currently use PERF_EVENT_TXN flag to determine if we are in the middle
of a transaction. If in a transaction, we defer the schedulability checks
from pmu->add() operation to the pmu->commit() operation.
Now that we have "transaction types" (PERF_PMU_TXN_ADD, PERF_PMU_TXN_READ)
we can use the type to determine if we are in a transaction and drop the
PERF_EVENT_TXN flag.
When PERF_EVENT_TXN is dropped, the cpuhw->group_flag on some architectures
becomes unused, so drop that field as well.
This is an extension of the Powerpc patch from Peter Zijlstra to s390,
Sparc and x86 architectures.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1441336073-22750-11-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The 24x7 counters in Powerpc allow monitoring a large number of counters
simultaneously. They also allow reading several counters in a single
HCALL so we can get a more consistent snapshot of the system.
Use the PMU's transaction interface to monitor and read several event
counters at once. The idea is that users can group several 24x7 events
into a single group of events. We use the following logic to submit
the group of events to the PMU and read the values:
pmu->start_txn() // Initialize before first event
for each event in group
pmu->read(event); // Queue each event to be read
pmu->commit_txn() // Read/update all queuedcounters
The ->commit_txn() also updates the event counts in the respective
perf_event objects. The perf subsystem can then directly get the
event counts from the perf_event and can avoid submitting a new
->read() request to the PMU.
Thanks to input from Peter Zijlstra.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1441336073-22750-10-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Define a new PERF_PMU_TXN_READ interface to read a group of counters
at once.
pmu->start_txn() // Initialize before first event
for each event in group
pmu->read(event); // Queue each event to be read
rc = pmu->commit_txn() // Read/update all queued counters
Note that we use this interface with all PMUs. PMUs that implement this
interface use the ->read() operation to _queue_ the counters to be read
and use ->commit_txn() to actually read all the queued counters at once.
PMUs that don't implement PERF_PMU_TXN_READ ignore ->start_txn() and
->commit_txn() and continue to read counters one at a time.
Thanks to input from Peter Zijlstra.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1441336073-22750-9-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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When we implement the ability to read several counters at once (using
the PERF_PMU_TXN_READ transaction interface), perf_event_read() can
fail when the 'group' parameter is true (eg: trying to read too many
events at once).
For now, have perf_event_read() return an integer. Ignore the return
value when the 'group' parameter is false.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1441336073-22750-8-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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