Commit graph

468,176 commits

Author SHA1 Message Date
Lee Jones
ec8bd56699 mfd: max77686: Ensure device type IDs are architecture agnostic
Extinguishes:

../drivers/mfd/max77686.c: In function ‘max77686_i2c_probe’:
../drivers/mfd/max77686.c:254:20:
	warning: cast from pointer to integer of different size

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:48 +01:00
Javier Martinez Canillas
a259f3896a mfd: max77686: Add Maxim 77802 PMIC support
Maxim MAX77802 is a power management chip that contains 10 high
efficiency Buck regulators, 32 Low-dropout (LDO) regulators used
to power up application processors and peripherals, a 2-channel
32kHz clock outputs, a Real-Time-Clock (RTC) and a I2C interface
to program the individual regulators, clocks outputs and the RTC.

This patch adds support for MAX77802 to the MAX77686 driver and is
based on a driver added to the Chrome OS kernel 3.8 by Simon Glass.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:48 +01:00
Himangi Saraogi
ad83533a63 mfd: tps6105x: Use managed resources when allocating memory
This patch introduces the use of devm_kzalloc instead of the
corresponding unmanaged version and does away with the kfrees in the
probe and remove functions. Also, a label is done away with.

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:47 +01:00
Lee Jones
23213218cb mfd: wm8997-tables: Suppress 'line over 80 chars' warnings
This is part of an effort to clean-up the MFD subsystem.

WARNING: line over 80 characters
+       { 0x00000068, 0x01FF },    /* R104   - Always On Triggers Sequence Select 3 */

WARNING: line over 80 characters
+       { 0x00000069, 0x01FF },    /* R105   - Always On Triggers Sequence Select 4 */

WARNING: line over 80 characters
+       { 0x0000006A, 0x01FF },    /* R106   - Always On Triggers Sequence Select 5 */

WARNING: line over 80 characters
+       { 0x0000006B, 0x01FF },    /* R107   - Always On Triggers Sequence Select 6 */

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:46 +01:00
Lee Jones
9ef4e935c2 mfd: kempld-core: Correct a variety of checkpatch warnings
WARNING: line over 80 characters
+module_param_string(force_device_id, force_device_id, sizeof(force_device_id), 0);

WARNING: msleep < 20ms can sleep for up to 20ms; see Documentation/timers/timers-howto.txt
+               msleep(1);

WARNING: __initdata should be placed after kempld_dmi_table[]
+static struct dmi_system_id __initdata kempld_dmi_table[] = {

WARNING: line over 80 characters
+               for (id = kempld_dmi_table; id->matches[0].slot != DMI_NONE; id++)

total: 0 errors, 4 warnings, 771 lines checked

This is part of an effort to clean-up the MFD subsystem.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:45 +01:00
Lee Jones
9336fe9104 mfd: ipaq-micro: Fix coding style errors/warnings reported by checkpatch
This is part of an effort to clean-up the MFD subsystem.

ERROR: space required before the open parenthesis '('
+                       if(!micro->msg)

WARNING: unnecessary whitespace before a quoted newline
+                       dev_dbg(micro->dev, "key message ignored, no handle \n");

WARNING: unnecessary whitespace before a quoted newline
+                       dev_dbg(micro->dev, "touchscreen message ignored, no handle \n");

WARNING: space prohibited before semicolon
+               rx->id = (ch & 0xf0) >> 4 ;

total: 1 errors, 3 warnings, 482 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:45 +01:00
Lee Jones
d69d4212b8 mfd: si476x-cmd: Remedy checkpatch style complains
This is part of an effort to clean-up the MFD subsystem.

WARNING: line over 80 characters
+                        struct si476x_rsq_status_args *rsqargs,

WARNING: line over 80 characters
+                        struct si476x_rsq_status_report *report)

WARNING: Unnecessary space before function pointer arguments
+       int (*power_up) (struct si476x_core *,

WARNING: Unnecessary space before function pointer arguments
+       int (*power_down) (struct si476x_core *,

total: 0 errors, 4 warnings, 1555 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:44 +01:00
Lee Jones
d5ce79ff20 mfd: tc6387xb: Remove unnecessary braces and correct style warnings
This is part of an effort to clean-up the MFD subsystem.

WARNING: braces {} are not necessary for single statement blocks
+       if (!iomem) {
+               return -EINVAL;
+       }

WARNING: sizeof *tc6387xb should be sizeof(*tc6387xb)
+       tc6387xb = kzalloc(sizeof *tc6387xb, GFP_KERNEL);

WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ...
+       printk(KERN_INFO "Toshiba tc6387xb initialised\n");

total: 0 errors, 3 warnings, 242 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:43 +01:00
Lee Jones
3103de8cd4 mfd: twl6030-irq: Extinguish coding style warnings
This is part of an effort to clean-up the MFD subsystem.

WARNING: please, no space before tabs
+^IRSV_INTR_OFFSET,  ^I/* Bit 12^IReserved^I^I*/$

WARNING: Missing a blank line after declarations
+       u8 unmask_value;
+       ret = twl_i2c_read_u8(TWL_MODULE_PIH, &unmask_value,

WARNING: Missing a blank line after declarations
+       u8 mask_value;
+       ret = twl_i2c_read_u8(TWL_MODULE_PIH, &mask_value,

total: 0 errors, 3 warnings, 484 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:42 +01:00
Lee Jones
6db1c9ba9d mfd: wm8350-i2c: Replace spaces with tabs
This is part of an effort to clean-up the MFD subsystem.

WARNING: please, no spaces at the start of a line
+       { "wm8350", 0 },$

WARNING: please, no spaces at the start of a line
+       { "wm8351", 0 },$

WARNING: please, no spaces at the start of a line
+       { "wm8352", 0 },$

WARNING: please, no spaces at the start of a line
+       { }$

total: 0 errors, 4 warnings, 93 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:42 +01:00
Lee Jones
a5c5accfc2 mfd: max8925-core: Fix 'missing blank line after declarations' warning
This is part of an effort to clean-up the MFD subsystem.

WARNING: Missing a blank line after declarations
+       struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
+       max8925_irqs[data->irq - chip->irq_base].enable

WARNING: Missing a blank line after declarations
+       struct max8925_chip *chip = irq_data_get_irq_chip_data(data);
+       max8925_irqs[data->irq - chip->irq_base].enable = 0;

total: 0 errors, 2 warnings, 927 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:41 +01:00
Lee Jones
04aa4438c0 mfd: twl4030-irq: Fix style warnings relating to pr_warn() and sizeof()
This is part of an effort to clean-up the MFD subsystem.

WARNING: Prefer pr_warn(... to pr_warning(...
+               pr_warning("twl4030: I2C error %d reading PIH ISR\n", ret);

WARNING: sizeof buf should be sizeof(buf)
+       memset(buf, 0xff, sizeof buf);

WARNING: sizeof *agent should be sizeof(*agent)
+       agent = kzalloc(sizeof *agent, GFP_KERNEL);

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:40 +01:00
Lee Jones
52149ad265 mfd: lp8788-irq: Fix 'missing blank line after declarations' warning
This is part of an effort to clean-up the MFD subsystem.

WARNING: Missing a blank line after declarations
+       struct lp8788_irq_data *irqd = irq_data_get_irq_chip_data(data);
+       irqd->enabled[data->hwirq] = 1;

WARNING: Missing a blank line after declarations
+       struct lp8788_irq_data *irqd = irq_data_get_irq_chip_data(data);
+       irqd->enabled[data->hwirq] = 0;

total: 0 errors, 2 warnings, 198 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:39 +01:00
Lee Jones
0309528aae mfd: ezx-pcap: Repair coding style errors picked up with checkpatch
This is part of an effort to clean-up the MFD subsystem.

WARNING: sizeof t should be sizeof(t)
+       memset(&t, 0, sizeof t);

WARNING: void function return statements are not generally useful
+       return;
+}

total: 0 errors, 2 warnings, 542 lines checked

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:31:02 +01:00
John W. Linville
9a244409d0 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
	net/mac80211/cfg.c

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2014-07-25 10:22:36 -04:00
Linus Walleij
2188a988bb backlight: Add driver for iPAQ micro backlight
This adds a driver for the backlight controlled by the microcontroller
on the Compaq iPAQ series of handheld computers: h3100, h3600
and h3700.

Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-07-25 15:16:36 +01:00
Jiri Prchal
8452e6ff3e netfilter: xt_LED: fix too short led-always-blink
If led-always-blink is set, then between switch led OFF and ON
is almost zero time. So blink is invisible. This use oneshot led trigger
with fixed time 50ms witch is enough to see blink.

Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-07-25 16:09:28 +02:00
Mark Rustad
b55a8144d1 x86/kvm: Resolve shadow warning from min macro
Resolve a shadow warning generated in W=2 builds by the nested
use of the min macro by instead using the min3 macro for the
minimum of 3 values.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-25 16:05:54 +02:00
Mark Rustad
25f97ff451 kvm: Resolve missing-field-initializers warnings
Resolve missing-field-initializers warnings seen in W=2 kernel
builds by having macros generate more elaborated initializers.
That is enough to silence the warnings.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-07-25 16:05:46 +02:00
Paul Bolle
d4da843e6f netfilter: kill remnants of ulog targets
The ulog targets were recently killed. A few references to the Kconfig
macros CONFIG_IP_NF_TARGET_ULOG and CONFIG_BRIDGE_EBT_ULOG were left
untouched. Kill these too.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-07-25 14:55:44 +02:00
Duan Jiong
a2b60c75fa netfilter: xt_LED: don't output error message redundantly
The function led_trigger_register() will only return -EEXIST when
error arises.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-07-25 14:55:33 +02:00
Himangi Saraogi
5bd3a76f4b netfilter: nf_conntrack: remove exceptional & on function name
In this file, function names are otherwise used as pointers without &.

A simplified version of the Coccinelle semantic patch that makes this
change is as follows:

// <smpl>
@r@
identifier f;
@@

f(...) { ... }

@@
identifier r.f;
@@

- &f
+ f
// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-07-25 14:50:58 +02:00
Maxime Ripard
5558593087 dmaengine: sun6i: Add driver for the Allwinner A31 DMA controller
The Allwinner A31 has a 16 channels DMA controller that it shares with the
newer A23. Although sharing some similarities with the DMA controller of the
older Allwinner SoCs, it's significantly different, I don't expect it to be
possible to share the driver for these two.

The A31 Controller is able to memory-to-memory or memory-to-device transfers on
the 16 channels in parallel.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 18:14:58 +05:30
Maxime Ripard
3c677cc460 Documentation: dt: Add Allwinner A31 DMA controller bindings
The Allwinner A31 DMA controller is rather simple to describe in the DT. Add
the bindings documentation.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 18:14:58 +05:30
Catalin Marinas
72c5839515 arm64: gicv3: Allow GICv3 compilation with older binutils
GICv3 introduces new system registers accessible with the full msr/mrs
syntax (e.g. mrs x0, Sop0_op1_CRm_CRn_op2). However, only recent
binutils understand the new syntax. This patch introduces msr_s/mrs_s
assembly macros which generate the equivalent instructions above and
converts the existing GICv3 code (both drivers/irqchip/ and
arch/arm64/kernel/).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Olof Johansson <olof@lixom.net>
Tested-by: Olof Johansson <olof@lixom.net>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
2014-07-25 13:12:15 +01:00
Paul Walmsley
0a26344440 ARM: OMAP2+: clock: allow omap2_dpll_round_rate() to round to next-lowest rate
Change the behavior of omap2_dpll_round_rate() to round to either the
exact rate requested, or the next lowest rate that the clock is able to
provide.

This is not an ideal fix, but is intended to provide a relatively safe
way for drivers to set PLL rates, until a better solution can be
implemented.

For the time being, omap3_noncore_dpll_set_rate() is still allowed to
set its rate to something other than what the caller requested; but will
warn when this occurs.

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-07-25 06:11:15 -06:00
Catalin Marinas
ecb3c2bbf2 Merge tag 'deps-irqchip-gic-3.17' of git://git.infradead.org/users/jcooper/linux
* tag 'deps-irqchip-gic-3.17' of git://git.infradead.org/users/jcooper/linux:
  irqchip: gic-v3: Initial support for GICv3
  irqchip: gic: Move some bits of GICv2 to a library-type file

Conflicts:
	arch/arm64/Kconfig
2014-07-25 13:03:22 +01:00
Christoph Hellwig
71e75c97f9 scsi: convert device_busy to atomic_t
Avoid taking the queue_lock to check the per-device queue limit.  Instead
we do an atomic_inc_return early on to grab our slot in the queue,
and if necessary decrement it after finishing all checks.

Unlike the host and target busy counters this doesn't allow us to avoid the
queue_lock in the request_fn due to the way the interface works, but it'll
allow us to prepare for using the blk-mq code, which doesn't use the
queue_lock at all, and it at least avoids a queue_lock round trip in
scsi_device_unbusy, which is still important given how busy the queue_lock
is.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:43:45 -04:00
Christoph Hellwig
7466501608 scsi: convert host_busy to atomic_t
Avoid taking the host-wide host_lock to check the per-host queue limit.
Instead we do an atomic_inc_return early on to grab our slot in the queue,
and if necessary decrement it after finishing all checks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:43:43 -04:00
Christoph Hellwig
7ae65c0f96 scsi: convert target_busy to an atomic_t
Avoid taking the host-wide host_lock to check the per-target queue limit.
Instead we do an atomic_inc_return early on to grab our slot in the queue,
and if necessary decrement it after finishing all checks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:39:00 -04:00
Christoph Hellwig
cf68d334dd scsi: push host_lock down into scsi_{host,target}_queue_ready
Prepare for not taking a host-wide lock in the dispatch path by pushing
the lock down into the places that actually need it.  Note that this
patch is just a preparation step, as it will actually increase lock
roundtrips and thus decrease performance on its own.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:38:53 -04:00
Christoph Hellwig
3b5382c459 scsi: set ->scsi_done before calling scsi_dispatch_cmd
The blk-mq code path will set this to a different function, so make the
code simpler by setting it up in a legacy-request specific place.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:38:48 -04:00
Christoph Hellwig
d0d3bbf96e scsi: centralize command re-queueing in scsi_dispatch_fn
Make sure we only have the logic for requeing commands in one place.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:38:41 -04:00
Christoph Hellwig
de3e8bf331 scsi: split __scsi_queue_insert
Factor out a helper to set the _blocked values, which we'll reuse for the
blk-mq code path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Webb Scales <webbnh@hp.com>
Acked-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Robert Elliott <elliott@hp.com>
2014-07-25 07:38:35 -04:00
Christoph Hellwig
6af7a4ffa2 scsi: add scsi_setup_cmnd helper
Factor out command setup code that will be shared with the blk-mq code path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
2014-07-25 07:38:08 -04:00
David Howells
8f3438ccea PKCS#7: Missing inclusion of linux/err.h
crypto/asymmetric_keys/pkcs7_key_type.c needs to #include linux/err.h rather
than relying on getting it through other headers.

Without this, the powerpc allyesconfig build fails.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David Howells <dhowells@redhat.com>
2014-07-25 11:33:53 +01:00
Vinod Koul
37a746aaf5 dmaengine: ipu: use return value of request_irq
Commit - 653e67f7e5: "dmaengine: inherit debug settings from the subsystem
for subdirectories" introduced debug option for subdirectories too
This exposed issue with ipu driver not using return value

For now just warn users about it

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 15:39:50 +05:30
Ilya Dryomov
4d9b67cddd rbd: take snap_id into account when reading in parent info
If we are mapping a snapshot, we must read in the parent_overlap value
of that snapshot instead of that of the base image.  Not doing so may
in particular result in us returning zeros instead of user data:

    # cat overlap-snap.sh
    #!/bin/bash
    rbd create --size 10 --image-format 2 foo
    FOO_DEV=$(rbd map foo)
    dd if=/dev/urandom of=$FOO_DEV bs=1M &>/dev/null
    echo "Base image"
    dd if=$FOO_DEV bs=1 count=16 skip=$(((4 << 20) - 8)) 2>/dev/null | xxd
    rbd snap create foo@snap
    rbd snap protect foo@snap
    rbd clone foo@snap bar
    rbd snap create bar@snap
    BAR_DEV=$(rbd map bar@snap)
    echo "Snapshot"
    dd if=$BAR_DEV bs=1 count=16 skip=$(((4 << 20) - 8)) 2>/dev/null | xxd
    rbd resize --allow-shrink --size 4 bar
    echo "Snapshot after base image resize"
    dd if=$BAR_DEV bs=1 count=16 skip=$(((4 << 20) - 8)) 2>/dev/null | xxd

    # ./overlap-snap.sh
    Base image
    0000000: e781 e33b d34b 2225 6034 2845 a2e3 36ed  ...;.K"%`4(E..6.
    Snapshot
    0000000: e781 e33b d34b 2225 6034 2845 a2e3 36ed  ...;.K"%`4(E..6.
    Resizing image: 100% complete...done.
    Snapshot after base image resize
    0000000: e781 e33b d34b 2225 0000 0000 0000 0000  ...;.K"%........

Even though bar@snap is taken with the old bar parent_overlap (8M),
reads from bar@snap beyond the new bar parent_overlap (4M) return
zeroes.  Fix it.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:16:50 +04:00
Ilya Dryomov
e8f59b595d rbd: do not read in parent info before snap context
Currently rbd_dev_v2_header_info() reads in parent info before the snap
context is read in.  This is wrong, because we may need to look at the
the parent_overlap value of the snapshot instead of that of the base
image, for example when mapping a snapshot - see next commit.  (When
mapping a snapshot, all we got is its name and we need the snap context
to translate that name into an id to know which parent info to look
for.)

The approach taken here is to make sure rbd_dev_v2_parent_info() is
called after the snap context has been read in.  The other approach
would be to add a parent_overlap field to struct rbd_mapping and
maintain it the same way rbd_mapping::size is maintained.  The reason
I chose the first approach is that the value of keeping around both
base image values and the actual mapping values is unclear to me.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:16:14 +04:00
Ilya Dryomov
5ff1108ccc rbd: update mapping size only on refresh
There is no sense in trying to update the mapping size before it's even
been set.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:15:58 +04:00
Ilya Dryomov
52bb1f9bed rbd: harden rbd_dev_refresh() and callers a bit
Recently discovered watch/notify problems showed that we really can't
ignore errors in anything refresh related.  Alas, currently there is
not much we can do in response to those errors, except print warnings.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:15:44 +04:00
Ilya Dryomov
0407759971 rbd: split rbd_dev_spec_update() into two functions
rbd_dev_spec_update() has two modes of operation, with nothing in
common between them.  Split it into two functions, one for each mode
and make our expectations more clear.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:15:35 +04:00
Ilya Dryomov
7626eb7d82 rbd: remove unnecessary asserts in rbd_dev_image_probe()
spec->image_id assert doesn't buy us much and image_format is asserted
in rbd_dev_header_name() and rbd_dev_header_info() anyway.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:15:18 +04:00
Ilya Dryomov
a720ae0901 rbd: introduce rbd_dev_header_info()
A wrapper around rbd_dev_v{1,2}_header_info() to reduce duplication.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:15:00 +04:00
Ilya Dryomov
ff96128fb0 rbd: show the entire chain of parent images
Make /sys/bus/rbd/devices/<id>/parent show the entire chain of parent
images.  While at it, kernel sprintf() doesn't return negative values,
casting to unsigned long long is no longer necessary and there is no
good reason to split into multiple sprintf() calls.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-25 13:14:27 +04:00
Bjorn Helgaas
e2f9922ad4 dmaengine: jz4740: Fix GPL v2 license string typo
Per license_is_gpl_compatible(), the MODULE_LICENSE() string for GPL v2 is
"GPL v2", not "GPLv2".  Use "GPL v2" so this module doesn't taint the
kernel.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 14:33:22 +05:30
Geert Uytterhoeven
0c9dbebdb6 dmaengine: Remove unused definition of DMA_MAX_COOKIE
As of commit commit f04cd40701 ("fsldma: fix
controller lockups"), its last (and only ever) user is gone.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 14:22:42 +05:30
Geert Uytterhoeven
70c9b8bd7a dmaengine: Clarify device parameter for dma_sync_*_for_*()
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 14:21:23 +05:30
Janusz Dziedzic
0ccb7a3485 ath10k: handle attention flags correctly when using A-MSDU
In case of A-MSDU RX we should check attention flags
correctly to be sure we report correct FCS status for
A-MSDU subframes. Without a patch we could report A-MSDU
subframes with wrong FCS as a correct to the stack, next
get a lot of DUP ACK TCP packets. Finally TP drop is seen
and this drop depends on FCS errors ratio for A-MSDU frame.

Example test case when TP drop is seen:
- ath10k configured as an AP
- used ath10k station
- forced A-MSDU (7 frames) on STA
- other traffic on channel (often FCS errors)
- monitor iface added on AP
- TCP STA -> AP traffic (iperf)

a) Iperf logs for case without the patch:

echo "1 64" > htt_max_amsdu_ampdu // disable A-MSDU
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 5.0 sec  56.6 MBytes  95.0 Mbits/sec
[  3]  5.0-10.0 sec  60.4 MBytes   101 Mbits/sec
[  3] 10.0-15.0 sec  60.2 MBytes   101 Mbits/sec
[  3] 15.0-20.0 sec  60.2 MBytes   101 Mbits/sec
[  3] 20.0-25.0 sec  63.8 MBytes   107 Mbits/sec
[  3] 25.0-30.0 sec  64.9 MBytes   109 Mbits/sec

echo "7 64" > htt_max_amsdu_ampdu  // set 7 A-MSDU subframes
[  3] 30.0-35.0 sec  40.0 MBytes  67.1 Mbits/sec
[  3] 35.0-40.0 sec  35.9 MBytes  60.2 Mbits/sec
[  3] 40.0-45.0 sec  36.9 MBytes  61.9 Mbits/sec
[  3] 45.0-50.0 sec  37.9 MBytes  63.5 Mbits/sec
[  3] 50.0-55.0 sec  34.5 MBytes  57.9 Mbits/sec
[  3] 55.0-60.0 sec  25.4 MBytes  42.6 Mbits/sec
[  3] 60.0-65.0 sec  48.2 MBytes  81.0 Mbits/sec
[  3] 65.0-70.0 sec  28.8 MBytes  48.2 Mbits/sec
[  3] 70.0-75.0 sec  29.2 MBytes  49.1 Mbits/sec
[  3] 75.0-80.0 sec  22.9 MBytes  38.4 Mbits/sec
[  3] 80.0-85.0 sec  26.4 MBytes  44.2 Mbits/sec
[  3] 85.0-90.0 sec  31.5 MBytes  52.8 Mbits/sec

b) Iperf logs for case with patch:

echo "1 64" > htt_max_amsdu_ampdu // disable A-MSDU
[  3] local 192.168.12.2 port 57512 connected with 192.168.12.1 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0- 5.0 sec  60.8 MBytes   102 Mbits/sec
[  3]  5.0-10.0 sec  62.2 MBytes   104 Mbits/sec
[  3] 10.0-15.0 sec  60.9 MBytes   102 Mbits/sec

echo "7 64" > htt_max_amsdu_ampdu  // set 7 A-MSDU subframes
[  3] 15.0-20.0 sec  68.1 MBytes   114 Mbits/sec
[  3] 20.0-25.0 sec  80.5 MBytes   135 Mbits/sec
[  3] 25.0-30.0 sec  83.0 MBytes   139 Mbits/sec
[  3] 30.0-35.0 sec  79.1 MBytes   133 Mbits/sec
[  3] 35.0-40.0 sec  77.1 MBytes   129 Mbits/sec
[  3] 40.0-45.0 sec  77.4 MBytes   130 Mbits/sec

Reported-by: Denton Gentry <denton.gentry@gmail.com>
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-07-25 11:51:07 +03:00
Jingchang Lu
211bfef7c2 dmaengine: fsl-edma: fix dmamux index calculating error
Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-07-25 14:11:50 +05:30