02 Jun, 2011
12 commits
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This patch introduces the CAIF HSI Protocol Driver for the
CAIF Link Layer.This driver implements a platform driver to accommodate for a
platform specific HSI devices. A general platform driver is not
possible as there are no HSI side Kernel API defined.Signed-off-by: Sjur Brændeland
Signed-off-by: David S. Miller -
Instead of setting CL45 mode for every CL45 access, apply it once during initialization.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Modify XGXS functions to follow rest of PHY scheme.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Fix link status synchronization between the primary function, and rest functions.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Move BCM8726 module detection code into a separate function to be called only once during initialization.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
This patch relocates some functions as a preparation for next patches, and also fixes some grammar mistakes.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Fix BCM84833 register settings.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
On 57712 chip, port number is enumerated per engine, so it requires adjustment in port display to the user.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
In case TX fault is detected on Fiber PHYs, declare the link as down until TX fault is gone.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Change return status from u8 to int.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Display the current media type connected to the port in ethtool.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller -
Add support for new phy BCM8722.
Signed-off-by: Yaniv Rosner
Signed-off-by: Eilon Greenstein
Signed-off-by: David S. Miller
01 Jun, 2011
5 commits
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Instead of failing the init/probe code in the driver fallback to the older opcode to ensure
the driver is loaded thereby enabling users to upgrade the f/w to whatever version is required.Signed-off-by: Somnath Kotur
Signed-off-by: David S. Miller -
This reverts commit e5cb966c0838e4da43a3b0751bdcac7fe719f7b4.
It causes new build regressions with gcc-4.2 which is
pretty common on non-x86 platforms.Reported-by: James Bottomley
Signed-off-by: David S. Miller -
catc_ctrl_run() calls usb_submit_urb() with GFP_KERNEL, while it is called from
catc_ctrl_async() and catc_ctrl_done() with catc->ctrl_lock spinlock held.The patch replaces GFP_KERNEL with GFP_ATOMIC.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov
Signed-off-by: David S. Miller -
This patch fixes a driver crash during packet reception due to not enough
bytes allocated in the skb. Since the loop reads out 4 bytes at a time, we
need to allow for up to 3 bytes of slack space.Signed-off-by: Dennis Aberilla
Signed-off-by: David S. Miller
30 May, 2011
14 commits
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Ask for delayed callbacks on TX ring full, to give the
other side more of a chance to make progress.Signed-off-by: Michael S. Tsirkin
Acked-by: David S. Miller
Signed-off-by: Rusty Russell -
Add an API that tells the other side that callbacks
should be delayed until a lot of work has been done.
Implement using the new event_idx feature.Note: it might seem advantageous to let the drivers
ask for a callback after a specific capacity has
been reached. However, as a single head can
free many entries in the descriptor table,
we don't really have a clue about capacity
until get_buf is called. The API is the simplest
to implement at the moment, we'll see what kind of
hints drivers can pass when there's more than one
user of the feature.Signed-off-by: Michael S. Tsirkin
Signed-off-by: Rusty Russell -
Support the new event index feature. When acked,
utilize it to reduce the # of interrupts sent to the guest.Signed-off-by: Michael S. Tsirkin
Signed-off-by: Rusty Russell -
Support for the new event idx feature:
1. When enabling interrupts, publish the current avail index
value to the host to get interrupts on the next update.
2. Use the new avail_event feature to reduce the number
of exits from the guest.Simple test with the simulator:
[virtio]# time ./virtio_test
spurious wakeus: 0x7real 0m0.169s
user 0m0.140s
sys 0m0.019s
[virtio]# time ./virtio_test --no-event-idx
spurious wakeus: 0x11real 0m0.649s
user 0m0.295s
sys 0m0.335sSigned-off-by: Michael S. Tsirkin
Signed-off-by: Rusty Russell -
The virtio balloon driver has a VIRTIO_BALLOON_F_MUST_TELL_HOST
feature bit. Whenever the bit is set, the guest kernel must
always tell the host before we free pages back to the allocator.
Without this feature, we might free a page (and have another
user touch it) while the hypervisor is unprepared for it.But, if the bit is _not_ set, we are under no obligation to
reverse the order; we're under no obligation to do _anything_.
As of now, qemu-kvm defines the bit, but doesn't set it.This patch makes the "tell host first" logic the only case. This
should make everybody happy, and reduce the amount of untested or
untestable code in the kernel.This _also_ means that we don't have to preserve a pfn list
after the pages are freed, which should let us get rid of some
temporary storage (vb->pfns) eventually.Signed-off-by: Dave Hansen
Signed-off-by: Rusty Russell -
That's already been done by the virtio infrastructure before the probe
function is called.Reported-by: alexey.kardashevskiy@au1.ibm.com
Acked-by: Amit Shah
Tested-by: Amit Shah
Signed-off-by: Rusty Russell -
It is easier to figure out the context by reading SCSI_SENSE_BUFFERSIZE
instead of plain '96'.Signed-off-by: Liu Yuan
Signed-off-by: Rusty Russell -
Wire up the virtio_driver config_changed method to get notified about
config changes raised by the host. For now we just re-read the device
size to support online resizing of devices, but once we add more
attributes that might be changeable they could be added as well.Note that the config_changed method is called from irq context, so
we'll have to use the workqueue infrastructure to provide us a proper
user context for our changes.Signed-off-by: Christoph Hellwig
Signed-off-by: Rusty Russell -
We had a few drivers move from arch/arm into drivers/gpio, but they
don't actually compile without the ARM platform headers etc. As a
result they were messing up allyesconfig on x86.Make them depend on ARM.
Reported-by: Ingo Molnar
Cc: Andrew Morton
Signed-off-by: Linus Torvalds -
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (43 commits)
acer-wmi: support integer return type from WMI methods
msi-laptop: fix section mismatch in reference from the function load_scm_model_init
acer-wmi: support to set communication device state by new wmid method
acer-wmi: allow 64-bits return buffer from WMI methods
acer-wmi: check the existence of internal 3G device when set capability
platform/x86:delete two unused variables
support wlan hotkey on Acer Travelmate 5735Z
platform-x86: intel_mid_thermal: Fix memory leak
platform/x86: Fix Makefile for intel_mid_powerbtn
platform/x86: Simplify intel_mid_powerbtn
acer-wmi: Delete out-of-date documentation
acerhdf: Clean up includes
acerhdf: Drop pointless dependency on THERMAL_HWMON
acer-wmi: Update MAINTAINERS
wmi: Orphan ACPI-WMI driver
tc1100-wmi: Orphan driver
acer-wmi: does not allow negative number set to initial device state
platform/oaktrail: ACPI EC Extra driver for Oaktrail
thinkpad_acpi: Convert printks to pr_
thinkpad_acpi: Correct !CONFIG_THINKPAD_ACPI_VIDEO warning
... -
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
dm kcopyd: return client directly and not through a pointer
dm kcopyd: reserve fewer pages
dm io: use fixed initial mempool size
dm kcopyd: alloc pages from the main page allocator
dm kcopyd: add gfp parm to alloc_pl
dm kcopyd: remove superfluous page allocation spinlock
dm kcopyd: preallocate sub jobs to avoid deadlock
dm kcopyd: avoid pointless job splitting
dm mpath: do not fail paths after integrity errors
dm table: reject devices without request fns
dm table: allow targets to support discards internally -
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI EC: remove redundant code
ACPI: Add D3 cold state
ACPI: processor: fix processor_physically_present in UP kernel
ACPI: Split out custom_method functionality into an own driver
ACPI: Cleanup custom_method debug stuff
ACPI EC: enable MSI workaround for Quanta laptops
ACPICA: Update to version 20110413
ACPICA: Execute an orphan _REG method under the EC device
ACPICA: Move ACPI_NUM_PREDEFINED_REGIONS to a more appropriate place
ACPICA: Update internal address SpaceID for DataTable regions
ACPICA: Add more methods eligible for NULL package element removal
ACPICA: Split all internal Global Lock functions to new file - evglock
ACPI: EC: add another DMI check for ASUS hardware
ACPI EC: remove dead code
ACPICA: Fix code divergence of global lock handling
ACPICA: Use acpi_os_create_lock interface
ACPI: osl, add acpi_os_create_lock interface
ACPI:Fix goto flows in thermal-sys -
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
x86 idle: deprecate mwait_idle() and "idle=mwait" cmdline param
x86 idle: deprecate "no-hlt" cmdline param
x86 idle APM: deprecate CONFIG_APM_CPU_IDLE
x86 idle floppy: deprecate disable_hlt()
x86 idle: EXPORT_SYMBOL(default_idle, pm_idle) only when APM demands it
x86 idle: clarify AMD erratum 400 workaround
idle governor: Avoid lock acquisition to read pm_qos before entering idle
cpuidle: menu: fixed wrapping timers at 4.294 seconds
29 May, 2011
9 commits
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Return client directly from dm_kcopyd_client_create, not through a
parameter, making it consistent with dm_io_client_create.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
Reserve just the minimum of pages needed to process one job.
Because we allocate pages from page allocator, we don't need to reserve
a large number of pages. The maximum job size is SUB_JOB_SIZE and we
calculate the number of reserved pages based on this.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
Replace the arbitrary calculation of an initial io struct mempool size
with a constant.The code calculated the number of reserved structures based on the request
size and used a "magic" multiplication constant of 4. This patch changes
it to reserve a fixed number - itself still chosen quite arbitrarily.
Further testing might show if there is a better number to choose.Note that if there is no memory pressure, we can still allocate an
arbitrary number of "struct io" structures. One structure is enough to
process the whole request.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
This patch changes dm-kcopyd so that it allocates pages from the main
page allocator with __GFP_NOWARN | __GFP_NORETRY flags (so that it can
fail in case of memory pressure). If the allocation fails, dm-kcopyd
allocates pages from its own reserve.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
Introduce a parameter for gfp flags to alloc_pl() for use in following
patches.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
Remove the spinlock protecting the pages allocation. The spinlock is only
taken on initialization or from single-threaded workqueue. Therefore, the
spinlock is useless.The spinlock is taken in kcopyd_get_pages and kcopyd_put_pages.
kcopyd_get_pages is only called from run_pages_job, which is only
called from process_jobs called from do_work.kcopyd_put_pages is called from client_alloc_pages (which is initialization
function) or from run_complete_job. run_complete_job is only called from
process_jobs called from do_work.Another spinlock, kc->job_lock is taken each time someone pushes or pops
some work for the worker thread. Once we take kc->job_lock, we
guarantee that any written memory is visible to the other CPUs.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
There's a possible theoretical deadlock in dm-kcopyd because multiple
allocations from the same mempool are required to finish a request.
Avoid this by preallocating sub jobs.There is a mempool of 512 entries. Each request requires up to 9
entries from the mempool. If we have at least 57 concurrent requests
running, the mempool may overflow and mempool allocations may start
blocking until another entry is freed to the mempool. Because the same
thread is used to free entries to the mempool and allocate entries from
the mempool, this may result in a deadlock.This patch changes it so that one mempool entry contains all 9 "struct
kcopyd_job" required to fulfill the whole request. The allocation is
done only once in dm_kcopyd_copy and no further mempool allocations are
done during request processing.If dm_kcopyd_copy is not run in the completion thread, this
implementation is deadlock-free.MIN_JOBS needs reducing accordingly and we've chosen to reduce it
further to 8.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
Don't split SUB_JOB_SIZE jobs
If the job size equals SUB_JOB_SIZE, there is no point in splitting it.
Splitting it just unnecessarily wastes time, because the split job size
is SUB_JOB_SIZE too.Signed-off-by: Mikulas Patocka
Signed-off-by: Alasdair G Kergon -
Integrity errors need to be passed to the owner of the integrity
metadata for processing. Consequently EILSEQ should be passed up the
stack.Cc: stable@kernel.org
Signed-off-by: Martin K. Petersen
Acked-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon
