Nisar Sayed says:
====================
lan78xx: Fixes to lan78xx driver
This series of patches are for lan78xx driver.
These patches fixes potential issues associated with lan78xx driver
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix to handle hard_header_len update
When ifconfig up/down sequence is initiated hard_header_len
get updated incrementally for each ifconfig up /down sequence,
this leads invalid hard_header_len, moving to lan78xx_bind
to have one time update of hard_header_len addresses the issue.
Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
USB fast connect/disconnect crash fix
When USB plugged/unplugged at fast rate,
lan78xx_mdio_init() in lan78xx_bind() failing case is not handled.
Whenever lan78xx_mdio_init() failed, dev->mdiobus will be freed, however
since lan78xx_bind() not consider as error and try to proceed for
further initialization in lan78xx_probe() which leads system hung/crash.
Also when register_netdev() failed, netdev is freed without calling lan78xx_unbind().
Hence halting the failed cases right manner fixes the system crash/hung issue.
Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Repeated dereference of nvmsg.msg.v1_msg.send_rndis_pkt can be
shortened by using a temporary. Do so.
No change in object code.
Miscellanea:
o Use * const for rpkt and nvchan
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The Renesas uPD72020x XHCI controller seems to suffer from a really
annoying bug, where it may retain some of its DMA programming across a XHCI
reset, and despite the driver correctly programming new DMA addresses.
This is visible if the device has been using 64-bit DMA addresses, and is
then switched to using 32-bit DMA addresses. The top 32 bits of the
address (now zero) are ignored are replaced by the 32 bits from the
*previous* programming. Sticking with 64-bit DMA always works, but doesn't
seem very appropriate.
A PCI reset of the device restores the normal functionality, which is done
at probe time. Unfortunately, this has to be done before any quirk has
been discovered, hence the intrusive nature of the fix.
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
CC: stable@vger.kernel.org # v4.11+
One critical clock fix for sun5i (A10s/A13/R8) which enables propogation
of clock rate changes from the "cpu" clock to it's parent PLL clock.
This fixes cpufreq related crashes that have been observed on KernelCI
with the C.H.I.P. and multi_v7_defconfig.
-----BEGIN PGP SIGNATURE-----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=uoCy
-----END PGP SIGNATURE-----
Merge tag 'sunxi-clk-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-fixes
Pull one Allwinner clock fix from Chen-Yu Tsai:
One critical clock fix for sun5i (A10s/A13/R8) which enables propagation
of clock rate changes from the "cpu" clock to it's parent PLL clock.
This fixes cpufreq related crashes that have been observed on KernelCI
with the C.H.I.P. and multi_v7_defconfig.
* tag 'sunxi-clk-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi-ng: sun5i: Add clk_set_rate_parent to the CPU clock
Devices that expose their interrupt status registers via system
registers (e.g. Statistical profiling, CPU PMU, DynamIQ PMU, arch timer,
vgic (although unused by Linux), ...) rely on a context synchronising
operation on the CPU to ensure that the updated status register is
visible to the CPU when handling the interrupt. This usually happens as
a result of taking the IRQ exception in the first place, but there are
two race scenarios where this isn't the case.
For example, let's say we have two peripherals (X and Y), where Y uses a
system register for its interrupt status.
Case 1:
1. CPU takes an IRQ exception as a result of X raising an interrupt
2. Y then raises its interrupt line, but the update to its system
register is not yet visible to the CPU
3. The GIC decides to expose Y's interrupt number first in the Ack
register
4. The CPU runs the IRQ handler for Y, but the status register is stale
Case 2:
1. CPU takes an IRQ exception as a result of X raising an interrupt
2. CPU reads the interrupt number for X from the Ack register and runs
its IRQ handler
3. Y raises its interrupt line and the Ack register is updated, but
again, the update to its system register is not yet visible to the
CPU.
4. Since the GIC drivers poll the Ack register, we read Y's interrupt
number and run its handler without a context synchronisation
operation, therefore seeing the stale register value.
In either case, we run the risk of missing an IRQ. This patch solves the
problem by ensuring that we execute an ISB in the GIC drivers prior
to invoking the interrupt handler. This is already the case for GICv3
and EOIMode 1 (the usual case for the host).
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
The version check was added due to dependency to
a618c7f89a ACPICA: Add support for new SRAT subtable
Now, that this code is in the kernel, remove the check. This is esp.
useful to enable backports.
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This seven is mostly minor build, Kconfig and error leg fixes.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQIcBAABAgAGBQJZgeACAAoJEAVr7HOZEZN4vxwP/0GZc1EWDubS8DZZOr4X25WA
jofQFCrWYf9jBcCA64pv7kF5wCbQk0MFXMvs2u5YHGMV8U4VyquNT2zEYm+R5ZD8
C3sIdgZyxb7x+KkUJ5NxvDBIzAQuQcPEUPZspgi809veoATQ28qoMO1NkOJzbJGE
nUs/6TZcpA5xGdqXtI3G6IsbvuAFO1hmI2aIUAj5UVKV+B9ILGsxWHPzYPErgtra
afTJ8jO4vYW/wcyY7/DG/V8UAvU/0pe9NZqgt0Gn+XiSq5C9HnqS9+BWjU9nx98g
EiPuvP6UBq7zGmjFQdUTwYuysbPDwyVfB1l7RJFVeBTPj6sINFrqTQPU8qwy96S8
gxfObnfbEkx4zJmv4iP8HtAgRQMVsVN64ICD6oeS4JQWmXoz90S0vCLwrTQv36ll
UHmBaSKMqPHTt+emEmup3rcOBU+4PIVq40jQjUyBCJXd/kg5GUz7Og++/NHX8JDZ
qhVJ/VhkBacnDD9fZLQ2cMfcB/E5pUmEgx3MycZty8pXx0AkttWyB0lIddln2yiL
qpZwbJ4nbhS7TO1/ScZlHEqp/rVY3aaIvLovWrhrmy4N1KBk41EmSxCokxkv+Kmd
Twy35eHLDT9Hn0emT+y12Ul5y0cTxy1JMOcMf6LLXAHQsKgg2khm3JfHcXC7H4mO
H/FpxwQT7z47yU3FF2mZ
=/+Ot
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"These seven patches are mostly minor build, Kconfig and error leg
fixes"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Fix return code in qedi_ep_connect()
scsi: lpfc: fix linking against modular NVMe support
scsi: scsi_transport_fc: return -EBUSY for deleted vport
scsi: libcxgbi: add check for valid cxgbi_task_data
scsi: aic7xxx: fix firmware build with O=path
scsi: megaraid_sas: fix memleak in megasas_alloc_cmdlist_fusion
scsi: qedi: Add ISCSI_BOOT_SYSFS to Kconfig
Commit a53e35db70 ("reset: Ensure drivers are explicit when requesting
reset lines") started to transition the reset control request API calls
to explicitly state whether the driver needs exclusive or shared reset
control behavior. Convert all drivers requesting exclusive resets to the
explicit API call so the temporary transition helpers can be removed.
No functional changes.
Cc: linux-ide@vger.kernel.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Drop static on a local variable, when the variable is initialized before
any possible use. Thus, the static has no benefit.
The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Quite a few fixes here that have been sent since the merge window, the
biggest one is the fix from Tony for some confusion with the device
property API which was causing issues with the of-graph card. This is
fixed with some changes in the graph API itself as it seemed very likely
to be error prone.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAlmB51ATHGJyb29uaWVA
a2VybmVsLm9yZwAKCRAk1otyXVSH0G39B/90DuMEckKIUVTPyIpyHetKl46eFRDJ
9t3EnovAZJX6zZ7bdlkcCg33wGmcIkn9PFfLpPcnbxYeKP0xGah/GGKec1K/aeTn
FiD2LjmO5Cc0adk5tEwqiVrL0cOVrUdXuMpvhoMQqD1EBzsgDQtUpG6EL8SGbrtd
dfSLFDrYHIBO2b3iZOZPJvqMPnh9jJ4zEyBwVpQGOCoQdD/AP5S84McxwGhlJfl4
UqAY8keZYlW/Gl1DSnc8BDDCuLrexdCEUAR/0Vz3QFQk+sSnKVlkE+XXo0L4AVZl
XoDGjB5DL8FjXPG7yKO0rAytFFFzSJCWwBRnESAIGKz9o5HIUfOZtE8Q
=10Px
-----END PGP SIGNATURE-----
Merge tag 'asoc-fix-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.13
Quite a few fixes here that have been sent since the merge window, the
biggest one is the fix from Tony for some confusion with the device
property API which was causing issues with the of-graph card. This is
fixed with some changes in the graph API itself as it seemed very likely
to be error prone.
This patch fixes a missing selection of DMIC in CIC filter source path
to dapm route. Without this patch dmic is not functional.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
MCLK for internal audio codec is expected to be at 9.6MHz by default.
This patch adds support to 9.6MHz to make the default case possible.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds support to set_sysclk() which can let the sound
card driver to set default mclk rate. In this case MCLK for
internal audio codec is expected to be at 9.6MHz by default.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds support to set_sysclk() which can let the sound
card driver to set default mclk rate. In this case MCLK for
internal audio codec is expected to be at 9.6MHz by default.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
submit_bio_wait() does not consume bio reference. Add comment about
that.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When blk_mq_get_request() failed, preempt counter isn't
released, and blk_mq_make_request() doesn't release the counter
too.
This patch fixes the issue, and makes sure that preempt counter
is only held if rq is allocated successfully. The same policy is
applied on .q_usage_counter too.
Signed-off-by: Ming Lei <minlei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In both the CP110 master and slave description, the node describing
the RTC was at the wrong place when taking into account increasing
register addresses. Interestingly, it was not even at the same (wrong)
place in both files.
This commit adjusts that, making the master and slave descriptions
more aligned.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
This patch adds an stdout-path to the mcbin device tree. This allows to
use earlycon.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Add support for PCIe with the the PCIe reset signal wired up to the
appropriate GPIO pin.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
(excepted the reset part)
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The MACCHIATOBin board has a PCA9548 I2C mux for the SFP ports on
CP100 master I2C bus 1. Add the DT description for it.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Due to the lack of GPIO support, the USB3 regulator definition was
left unfinished in the MacchiatoBin DT description. Now that GPIO
support is available, this commit adjusts the Device Tree to properly
describe the USB3 regulator.
[gregory.clement@free-electrons.com: use commit log from Thomas]
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Add pinctrl nodes to describe the CPM I2C0 and CPS SPI1 settings.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Add the GPIO interrupts for the CP110.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The Espressobin SBC has a USB2 interface available on J8. Let's
enable it.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The Cortex-A53s that power the Armada-37xx SoCs are equipped with
a PMUv3, just like most ARMv8 cores.
Advertise the PMUv3 presence in the device tree, and wire its
interrupt. This allows the perf subsystem to work correctly.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The Cortex-A53s that power the Armada-37xx SoCs are equipped with
a GIC CPU interface that gets enabled when coupled with a GICv3
interrupt controller, such as the GIC-500 on the this SoC.
Advertise the MMIO ranges provided by the CPUs, which enables
(among other things) GICv2 guests to run under a hypervisor such
as KVM.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The GIC-500 integrated in the Armada-37xx SoCs is compliant with
the GICv3 architecture, and thus provides a maintenance interrupt
that is required for hypervisors to function correctly.
With the interrupt provided in the DT, KVM now works as it should.
Tested on an Espressobin system.
Fixes: adbc3695d9 ("arm64: dts: add the Marvell Armada 3700 family and
a development board")
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
The number of pins in South Bridge is 30 and not 29. There is a fix for
the driver for the pinctrl, but a fix is also need at device tree level
for the GPIO.
Fixes: afda007fed ("ARM64: dts: marvell: Add pinctrl nodes for Armada
3700")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Sergey noticed a small but fatal mistake in __tty_insert_flip_char,
leading to an oops in an interrupt handler when using any serial
port.
The problem is that I accidentally took the tty_buffer pointer
before calling __tty_buffer_request_room(), which replaces the
buffer. This moves the pointer lookup to the right place after
allocating the new buffer space.
Fixes: 979990c628 ("tty: improve tty_insert_flip_char() fast path")
Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
rpc_clnt_add_xprt() expects the callback function to be synchronous, and
expects to release the transport and switch references itself.
Fixes: 04fa2c6bb5 ("NFS pnfs data server multipath session trunking")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Always enable AEABI for ARMv6+, as these use the double-word exclusives
which must be passed an even register to avoid errors such as:
/tmp/ccG2rCwe.s:905: Error: even register required -- `ldrexd r5,r6,[r7]'
/tmp/ccG2rCwe.s:909: Error: even register required -- `strexd sl,r3,r4,[r7]'
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Avoid repeatedly saving and restoring registers around the calls to
trace_hardirqs_on() and context_tracking_user_exit(). With the
previous changes, we no longer need to preserve "lr" across these
calls, and if we re-load r0-r3 later, we can avoid preserving these
regsiters too.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Move the saved PC value into r9, thereby moving it into a caller-saved
register for functions that we may call during the entry to a syscall.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Obtain the thread info structure later in the syscall processing, so
that we free up a register for earlier code.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Use aliases for the saved (and preserved) PSR and PC values so that we
can control which registers are used.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Add missing errno include to make the header self-contained and avoid
compilation breakage when compiling shared code without
CONFIG_HAVE_ARM_SCU.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Add missing types.h include to make the suspend header self-contained
and avoid compilation breakage due to include-directive ordering.
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
The nf_loginfo structures are only passed as the seventh argument to
nf_log_trace, which is declared as const or stored in a local const
variable. Thus the nf_loginfo structures themselves can be const.
Done with the help of Coccinelle.
// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct nf_loginfo i@p = { ... };
@ok1@
identifier r.i;
expression list[6] es;
position p;
@@
nf_log_trace(es,&i@p,...)
@ok2@
identifier r.i;
const struct nf_loginfo *e;
position p;
@@
e = &i@p
@bad@
position p != {r.p,ok1.p,ok2.p};
identifier r.i;
struct nf_loginfo e;
@@
e@i@p
@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct nf_loginfo i = { ... };
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
When a nf_conntrack_l3/4proto parameter is not on the left hand side
of an assignment, its address is not taken, and it is not passed to a
function that may modify its fields, then it can be declared as const.
This change is useful from a documentation point of view, and can
possibly facilitate making some nf_conntrack_l3/4proto structures const
subsequently.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The target variable is not used in the compat_copy_entry_from_user().
So It can be removed.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Sony VAIO VPCL14M1R needs the quirk to make the speaker working properly.
Tested-by: Dmitriy <mexx400@yandex.ru>
Cc: <stable@vger.kernel.org>
Signed-off-by: Sergei A. Trusov <sergei.a.trusov@ya.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The A5XX GPU has really good hardware fault detection that can
detect a abnormal hardware condition and fire an interrupt in
a matter of milliseconds which is a lot better than waiting for
the hangcheck timer.
Enable the interrupt and log information before kicking off
recovery.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Commit eeb754746b ("drm/msm/gpu: use pm-runtime") adds a pointer
for the GPU platform device to the msm_gpu struct so we can
happily remove the same pointers from the individual GPU
structs.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
MDSS represents the top level wrapper that contains MDP5, DSI, HDMI and
other sub-blocks. W.r.t device heirarchy, it's the parent of all these
devices. The power domain of this device is actually tied to the GDSC
hw. When any sub-device enables its PD, MDSS's PD is also enabled.
The suspend/resume ops enable the top level clocks that end at the MDSS
boundary. For now, we're letting them all be optional, since the child
devices anyway hold a ref to these clocks.
Until now, we'd called a runtime_get() during probe, which ensured that
the GDSC was always on. Now that we've set up runtime PM for the children
devices, we can get rid of this hack.
Note: that the MDSS device is the platform_device in msm_drv.c. The
msm_runtime_suspend/resume ops call the funcs that enable/disable
the top level MDSS clocks. This is different from MDP4, where the
platform device created in msm_drv.c represents MDP4 itself. It would
have been nicer to hide these differences by adding new kms funcs, but
runtime PM needs to be enabled before kms is set up (i.e, msm_kms_init
is called).
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Requests for assigning/freeing SMP blocks by planes are collected during
the atomic check phase, and represented by mdp5_smp_state's 'assigned'
and 'released' members.
Once the atomic state is committed, these members are reset to 0,
indicating that the existing configuration satisfies all the planes.
Future atomic commits will copy the old mdp5_smp_state, and the 'assigned'
and 'released' members would be updated only if there was a change in
the plane configurations.
When we disable and re-enable display, we lose the values we wrote to the
SMP registers, but the code doesn't program the registers because there
isn't any change in mdp5_smp_state.
Fix this by writing to the registers irrespective of whether there was
a change in SMP state or not. We do this by keeping a cache of the
register values, and write them every time we commit a state.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
