Commit graph

691,473 commits

Author SHA1 Message Date
Huang Rui
d550df0b60 drm/amd/powerplay: add iceland_dyn_defaults header
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:25 -04:00
Huang Rui
2435b0547c drm/amd/powerplay: add iceland SMU mananger
The system management unit (SMU) is a subcomponent of the northbridge
that is responsible for a variety of system and power management tasks
during boot and runtime for GPU. In powerplay, it will be used on
firmware loading and power task management. This patch adds SMU
mananger for iceland.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:24 -04:00
Huang Rui
d31d3c28c7 drm/amd/powerplay: add SMU71 header files for iceland (v2)
v2: cleanup headers, add copyright

Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:22 -04:00
Christian König
37ac235bf8 drm/amdgpu: use amdgpu_bo_create_kernel in amdgpu_ring.c
Saves us quite a bunch of code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:21 -04:00
Christian König
c6f4439ce6 drm/amdgpu: use amdgpu_bo_create_kernel in amdgpu_ih.c
Saves us quite a bunch of code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:20 -04:00
Christian König
4b62e69777 drm/amdgpu: user amdgpu_bo_create_kernel for the UVD BO
Saves us some code.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:19 -04:00
Christian König
cdb7e8f273 drm/amdgpu: add more warning to amdgpu_bo_offset
Warn when we try to get the address and the BO isn't locked or reserved.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:17 -04:00
Christian König
78bbbd9c0f drm/amdgpu: pin shared GWS, GDS and OA resources
They can't move anyway, but just to be clean here.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:16 -04:00
Christian König
7c204889de drm/amdgpu: add new helper for in kernel allocations
We often allocate, pin and map things at the same time in the kernel.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:15 -04:00
Chunming Zhou
81e04e1809 drm/amdgpu: add dce10 check_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:14 -04:00
Chunming Zhou
115933a577 drm/amdgpu: implement vce3 check/post_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:12 -04:00
Chunming Zhou
fc0b3b90b7 drm/amdgpu: implement UVD6 check/pre/post_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:11 -04:00
Chunming Zhou
1015a1b175 drm/amdgpu: implement vi ih check/pre/post_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:10 -04:00
Chunming Zhou
50b0197abf drm/amdgpu: implement gmc8 check/pre/post_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:09 -04:00
Chunming Zhou
e702a68051 drm/amdgpu: implement sdma3 check/pre/post_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:07 -04:00
Chunming Zhou
e4ae0fc336 drm/amdgpu: implement gfx8 post_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:06 -04:00
Chunming Zhou
35d782feae drm/amdgpu: add amdgpu soft reset
Check gpu status first, if MC/VMC/DISPLAY hang, directly triger full reset.
If engine hangs, then triger engine soft reset, if soft reset fails, will
fallback to full reset.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:05 -04:00
Chunming Zhou
1057f20c22 drm/amdgpu: add gfx8 pre soft reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:04 -04:00
Chunming Zhou
d31a501ead drm/amdgpu: add pre_soft_reset ip func
It will be used before soft_reset to do some preparing work for reset.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:02 -04:00
Chunming Zhou
3d7c638490 drm/amdgpu: implement gfx8 check_soft_reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:01 -04:00
Chunming Zhou
63fbf42f73 drm/amdgpu: add check_soft_reset ip func
It is used to identify if the ip block is hang.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-08-08 11:32:00 -04:00
Thomas Petazzoni
d1cc3d9213 arm64: defconfig: enable xhci-platform
Some ARM64 platforms (for example the Marvell Armada 7K/8K) use the
generic XHCI platform driver, so it makes sense to enable
CONFIG_USB_XHCI_PLATFORM=y in the defconfig to support XHCI on such
platforms.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-08-08 17:26:58 +02:00
Grzegorz Jaszczyk
c4f83aae83 ARM: mvebu: enable UBI and UBIFS in mvebu_v7_defconfig
UBIFS is commonly used on Marvell EBU v7 platforms to store the root
file-system, so it makes sense to have those options enabled by default
in mvebu_v7_defconfig.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:57:24 +02:00
Grzegorz Jaszczyk
862d56398d ARM: mvebu: enable MTD command line partition table in mvebu_v7_defconfig
Marvell EBU v7 platforms contain various MTD devices, therefore it makes
sense to allow configuring the MTD partition tables via the kernel command
line.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:57:19 +02:00
Adam Thomson
72dce36892 ASoC: da7218: Improve driver efficiency with regards to MCLK usage
Currently MCLK remains enabled during bias STANDBY state, and this
is not necessary. This patch updates the code to handle enabling
and disabling of MCLK, if provided, when moving between STANDBY
and PREPARE states, therefore saving power when no active streams
present.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-08 15:57:07 +01:00
Adam Thomson
8799af0d82 ASoC: da7218: Remove 32KHz PLL mode from driver
Functionality has been removed in latest silicon variants. This
patch removes the feature from the driver to align.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-08 15:57:07 +01:00
Grzegorz Jaszczyk
3566451235 ARM: dts: mvebu: armada-395-gp: add support for the Armada 395 GP Board
This commit adds description for the following features for this board:

- Serial port
- PCIe interfaces
- USB2.0
- USB3.0
- SDIO
- 1024 MiB NAND-FLASH
- SATA
- I2C buses

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:36:48 +02:00
Grzegorz Jaszczyk
0c2123a69e ARM: dts: mvebu: armada-390-db: add support for the Armada 390 DB board
This commit adds description for following features for this board:

- Serial port
- I2C buses
- 16MB SPI-NOR
- USB2.0
- USB3.0
- PCIe interfaces

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:36:27 +02:00
Grzegorz Jaszczyk
dacf5f5465 ARM: dts: mvebu: armada-398-db: enable supported usb interfaces
The Marvell Armada 398 Development board contains both USB2.0 and USB3.0
ports, which can be handled by existing drivers.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:36:24 +02:00
Grzegorz Jaszczyk
d2dd856e8c ARM: dts: mvebu: armada-398: update the dtsi about missing interfaces
Beside interfaces described in the armada-39x.dtsi and armada-395.dtsi, the
Armada 398 SoC family supports 2 additional SATA port (2 ports in one unit)

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:36:18 +02:00
Grzegorz Jaszczyk
eebead7853 ARM: dts: mvebu: armada-395: add support for the Armada 395 SoC family
Beside interfaces described in the armada-39x.dtsi, the Armada 395 SoC
family supports: 2 x SATA3 (2 ports in one unit) and the USB3.0

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:30:23 +02:00
Grzegorz Jaszczyk
daab54316b ARM: dts: mvebu: armada-39x: enable rtc for all Armada-39x SoCs
Despite that FS states that rtc is present only in A395 and A398 and not in
A390, the rtc is working with A390.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:54 +02:00
Grzegorz Jaszczyk
d81a914fc6 ARM: dts: mvebu: armada-39x: add missing nodes describing GPIO's
The whole Armada 39x SoC family of processors has GPIO's which all can be
supported with existing driver.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:54 +02:00
Grzegorz Jaszczyk
100a20a9ff ARM: dts: mvebu: armada-39x: enable watchdog for all Armada-39x SoCs
The whole Armada 39x SoC family of processors has watchdog which can be
supported with existing driver.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-by: Lior Amsalem <alior@marvell.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:53 +02:00
Grzegorz Jaszczyk
16ae883151 ARM: dts: mvebu: armada-39x: enable the thermal sensor in Armada-39x SoCs
The whole Armada 39x SoC family of processors has thermal sensor which can
be supported with existing driver.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:53 +02:00
Grzegorz Jaszczyk
8deebf8b8a ARM: dts: mvebu: armada-39x: enable PMU, CA9 SoC Controller and Coherency fabric
This commit enables:
- CA9's Performance Monitor Unit
- CA9 MPcore SoC Controller
- Coherency fabric
on Armada 39x, basing on the Armada 38x (which has the same CA9 CPU).

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-by: Lior Amsalem <alior@marvell.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:52 +02:00
Grzegorz Jaszczyk
39f3c23f51 ARM: dts: mvebu: armada-39x: update the SDHCI node on Armada 39x
Commit 1140011ee9 ("mmc: sdhci-pxav3: Modify clock settings
for the SDR50 and DDR50 modes") has extended the Device Tree
binding used to describe PXAv3 SDHCI controllers in order to be
able to use the SDR50 and DDR50 modes.

This commit updates the Device Tree description of the Armada
39x SDHCI controller in other to take advantage of this
functionality.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:52 +02:00
Grzegorz Jaszczyk
061492cfad ARM: dts: mvebu: armada-390: add missing compatibility string and bracket
The armada-390.dtsi was broken since the first patch which adds Device Tree
files for Armada 39x SoC was introduced.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: <stable@vger.kernel.org> # 4.0+
Fixes 538da83 ("ARM: mvebu: add Device Tree files for Armada 39x SoC and board")

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:51 +02:00
Grzegorz Jaszczyk
4ec17292a9 ARM: dts: mvebu: a385-db-ap: add default partition description for NAND
The Armada 385 Access Point Development board contains NAND FLSH which is
already enabled in existing dts. Nevertheless the default partition
description was missing.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:51 +02:00
Grzegorz Jaszczyk
b583e291ba ARM: dts: mvebu: a385-db-ap: enable USB (orion-ehci) port
The Armada 385 Access Point Development board contains USB port, which can
be handled by existing orion-ehci driver.

Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:28:47 +02:00
Eric W. Biederman
b032132c3c userns: Free user namespaces in process context
Add the necessary boiler plate to move freeing of user namespaces into
work queue and thus into process context where things can sleep.

This is a necessary precursor to per user namespace sysctls.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2016-08-08 09:17:18 -05:00
Eric W. Biederman
13bcc6a285 sysctl: Stop implicitly passing current into sysctl_table_root.lookup
Passing nsproxy into sysctl_table_root.lookup was a premature
optimization in attempt to avoid depending on current.  The
directory /proc/self/sys has not appeared and if and when
it does this code will need to be reviewed closely and reworked
anyway.  So remove the premature optimization.

Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2016-08-08 09:17:16 -05:00
Stefan Roese
55877f58b0 ARM: dts: mvebu: armada-370-xp: Add MBus mappings for all SPI devices
This patch adds the static MBus mappings for all supported SPI devices
(8 per controller) for the direct access SPI mode. They can be configured
and enabled by setting these MBus mapping in the 'ranges' property of the
per-board 'soc' node. If nothing is changed here, the default 'normal'
(indirect) SPI mode is used.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:16:44 +02:00
Stefan Roese
0160a4b689 ARM: dts: mvebu: A37x/XP/38x/39x: Move SPI controller nodes into 'soc' node
This patch moves all Armada 370/XP/38x/39x SPI controller nodes from the
'internal-regs' node down into the 'soc' node. This is in preparation
to enable the usage of the SPI direct access mode. A follow-up patch
will add the static MBus mappings for the SPI devices into the 'reg'
property of the SPI controller DT node.

By moving these SPI controller nodes, this patch also makes use of
the labels rather than keeping the tree structure.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:16:31 +02:00
Stefan Roese
1113603e39 ARM: dts: mvebu: Add SPI1 pinctrl defines for Armada XP
This patch defines and uses common Armada XP pinctrl settings in
armada-xp.dtsi for the SPI1 interface (MPP13,14,16,17).

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2016-08-08 16:16:09 +02:00
Ursula Braun
9bce8b2cbe s390/qdio: avoid reschedule of outbound tasklet once killed
During qdio_shutdown the queue tasklets are killed for all inbound and
outbound queues. The queue structures might be freed after
qdio_shutdown.
Thus it must be guaranteed that these queue tasklets are not rescheduled
after that. In addition the outbound queue timers are deleted and it
must
be guaranteed that these timers are not restarted after qdio_shutdown
processing. Timer deletion should make use of del_timer_sync() to make
sure qdio_outbound_timer() is finished on other CPUs as well. Queue
tasklets should be scheduled in state QDIO_IRQ_STATE_ACTIVE only.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-08 16:01:28 +02:00
Andreas Färber
b9700be51b ARM: dts: imx6sx-sabreauto: Fix misspelled property
In commit 99fc5ba0bf ("ARM: dts: imx6sx: add i.mx6sx sabreauto board
support") it should've been enable-sdio-wakeup (not -wakup). But that is
now considered a legacy name for wakeup-source, so directly use the new
name instead, as done in commit 26cefdd15d for the other occurrence.

Fixes: 26cefdd15d ("ARM: dts: imx: replace legacy wakeup property with 'wakeup-source'")
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-08-08 21:57:37 +08:00
Jens Axboe
d3f422c8d5 Merge branch 'nvmf-4.8-rc' of git://git.infradead.org/nvme-fabrics into for-linus
Sagi writes:

Mostly stability fixes for nvmet, rdma:
- fix uninitialized rdma_cm private data from Roland.
- rdma device removal handling (host and target).
- fix controller disconnect during active mounts.
- fix namespaces lost after fabric reconnects.
- remove redundant calls to namespace removal (rdma, loop).
- actually send controller shutdown when disconnecting.
- reconnect fixes (ns rescan and aen requeue)
- nvmet controller serial number inconsistency fix.
2016-08-08 07:42:42 -06:00
Sebastian Ott
6e30c549f6 s390/qdio: remove checks for ccw device internal state
Prior to starting IO qdio checks for the internal state of the ccw
device. These checks happen without locking, so consistency between
state evaluation and starting of the IO is not guaranteed.

Since the internal state is checked during ccw_device_start it is
safe to get rid of these additional checks.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-08 15:41:34 +02:00
Sebastian Ott
ddebf6612c s390/qdio: fix double return code evaluation
qdio sometimes checks return codes twice. First with the ccw device's
lock held and then a 2nd time after the lock is released. Simplify
the code by releasing the lock earlier and unify the return code
evaluation.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-08-08 15:41:34 +02:00