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Control transfers have both IN and OUT (or SETUP) packets, so when
clearing TT buffers for a control transfer it's necessary to send
two HUB_CLEAR_TT_BUFFER requests to the hub.
Signed-off-by: William Gulland <wgulland@google.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix memory leaks introduced in commits:
40d133d7f542616cf9538508a372306e626a16e9
usb: gadget: f_ncm: convert to new function interface with backward compatibility
fee562a6450b7806f1fbbe1469a67b5395b5c10a
usb: gadget: f_ecm: convert to new function interface with backward compatibility
fcbdf12ebef73a6069e2a1aada1e546fb578a4aa
usb: gadget: f_phonet: convert to new function interface with backward compatibility
b29002a157940752dfed2c488b2011f63f007d71
usb: gadget: f_eem: convert to new function interface with backward compatibility
8cedba7c73af1369599b1111639cfeb66fe13aaa
usb: gadget: f_subset: convert to new function interface with backward compatibility
f466c6353819326873fa48a02c6f2d7c903240d6
usb: gadget: f_rndis: convert to new function interface with backward compatibility
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Allocated urbs and buffers were never freed on errors in open.
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Some (very few) early devices like mine, where not exposting a proper CDC
descriptor. This was fixed with an immediate firmware update from the vendor,
and pre-installed on newer devices.
So actual devices can be driven by cdc_acm.c + cdc_ether.c.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Speaks AT on interfaces 5 (command & PPP) and 3 (secondary), other
interface protocols are unknown.
Signed-off-by: Dan Williams <dcbw@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Prevent the option driver from binding itself to the QMI/WWAN interface, making
it unusable by the proper driver.
Signed-off-by: enrico Mioso <mrkiko.rs@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-linus
Sarah writes:
xhci: Bug fixes, now with more tags!
Hi Greg,
Here's five bug fixes for 3.12.
The three patches are marked for stable. Two fix NULL pointer dereferences.
The third marked for stable suppresses some serious log spam from unnecessary
xHCI driver warnings, whenever an isochronous short packet happens on an xHCI
1.0 host.
The other two patches fix build warnings.
Sarah Sharp
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We forgot to free the node itself when free:ing a map.
Reported-by: xulinuxkernel <xulinuxkernel@gmail.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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in some cases where device is attched to xhci port and do not responding,
for example ath9k_htc with stalled firmware, kernel will
crash on ring_doorbell_for_active_rings.
This patch check if pointer exist before it is used.
This patch should be backported to kernels as old as 2.6.35, that
contain the commit e9df17eb1408cfafa3d1844bfc7f22c7237b31b8 "USB: xhci:
Correct assumptions about number of rings per endpoint"
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
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Xhci controllers with hci_version > 0.96 gives spurious success
events on short packet completion. During webcam capture the
"ERROR Transfer event TRB DMA ptr not part of current TD" was observed.
The same application works fine with synopsis controllers hci_version 0.96.
The same issue is seen with Intel Pantherpoint xhci controller. So enabling
this quirk in xhci_gen_setup if controller verion is greater than 0.96.
For xhci-pci move the quirk to much generic place xhci_gen_setup.
Note from Sarah:
The xHCI 1.0 spec changed how hardware handles short packets. The HW
will notify SW of the TRB where the short packet occurred, and it will
also give a successful status for the last TRB in a TD (the one with the
IOC flag set). On the second successful status, that warning will be
triggered in the driver.
Software is now supposed to not assume the TD is not completed until it
gets that last successful status. That means we have a slight race
condition, although it should have little practical impact. This patch
papers over that issue.
It's on my long-term to-do list to fix this race condition, but it is a
much more involved patch that will probably be too big for stable. This
patch is needed for stable to avoid serious log spam.
This patch should be backported to kernels as old as 3.0, that
contain the commit ad808333d8201d53075a11bc8dd83b81f3d68f0b "Intel xhci:
Ignore spurious successful event."
The patch will have to be modified for kernels older than 3.2, since
that kernel added the xhci_gen_setup function for xhci platform devices.
The correct conflict resolution for kernels older than 3.2 is to set
XHCI_SPURIOUS_SUCCESS in xhci_pci_quirks for all xHCI 1.0 hosts.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@vger.kernel.org
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Fix warning when CONFIG_PCI is not enabled
(from commit 296365781903226a3fb8758901eaeec09d2798e4).
drivers/usb/host/pci-quirks.h: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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Resolves the following build warnings:
drivers/usb/host/xhci.c:332:13: warning: 'xhci_msix_sync_irqs' defined but not used [-Wunused-function]
drivers/usb/host/xhci.c:3901:12: warning: 'xhci_change_max_exit_latency' defined but not used [-Wunused-function]
These functions are not always used, and since they're marked static
they will produce build warnings:
- xhci_msix_sync_irqs is only used with CONFIG_PCI.
- xhci_change_max_exit_latency is a little more complicated with
dependencies on CONFIG_PM and CONFIG_PM_RUNTIME.
Instead of building a bigger maze of ifdefs in this code, I've just
marked both with __maybe_unused.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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When the host controller fails to respond to an Enable Slot command, and
the host fails to respond to the register write to abort the command
ring, the xHCI driver will assume the host is dead, and call
usb_hc_died().
The USB device's slot_id is still set to zero, and the pointer stored at
xhci->devs[0] will always be NULL. The call to xhci_check_args in
xhci_free_dev should have caught the NULL virt_dev pointer.
However, xhci_free_dev is designed to free the xhci_virt_device
structures, even if the host is dead, so that we don't leak kernel
memory. xhci_free_dev checks the return value from the generic
xhci_check_args function. If the return value is -ENODEV, it carries on
trying to free the virtual device.
The issue is that xhci_check_args looks at the host controller state
before it looks at the xhci_virt_device pointer. It will return -ENIVAL
because the host is dead, and xhci_free_dev will ignore the return
value, and happily dereference the NULL xhci_virt_device pointer.
The fix is to make sure that xhci_check_args checks the xhci_virt_device
pointer before it checks the host state.
See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1203453 for
further details. This patch doesn't solve the underlying issue, but
will ensure we don't see any more NULL pointer dereferences because of
the issue.
This patch should be backported to kernels as old as 3.1, that
contain the commit 7bd89b4017f46a9b92853940fd9771319acb578a "xhci: Don't
submit commands or URBs to halted hosts."
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: Vincent Thiele <vincentthiele@gmail.com>
Cc: stable@vger.kernel.org
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commit 181d1b9e31c668259d3798c521672afb8edd355c
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Sun Jul 21 13:16:24 2013 +0200
drm/i915: fix up gt init sequence fallout
moved dev_priv->gt_lock initialization after use. Do the initialization
much earlier with other spin lock initializations.
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Cc: stable@vger.kernel.org (since the regressing patch is also cc: stable)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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If a device in a RAID4/5/6 is being replaced while another is being
recovered, then the writes to the replacement device currently don't
happen, resulting in corruption when the replacement completes and the
new drive takes over.
This is because the replacement writes are only triggered when
's.replacing' is set and not when the similar 's.sync' is set (which
is the case during resync and recovery - it means all devices need to
be read).
So schedule those writes when s.replacing is set as well.
In this case we cannot use "STRIPE_INSYNC" to record that the
replacement has happened as that is needed for recording that any
parity calculation is complete. So introduce STRIPE_REPLACED to
record if the replacement has happened.
For safety we should also check that STRIPE_COMPUTE_RUN is not set.
This has a similar effect to the "s.locked == 0" test. The latter
ensure that now IO has been flagged but not started. The former
checks if any parity calculation has been flagged by not started.
We must wait for both of these to complete before triggering the
'replace'.
Add a similar test to the subsequent check for "are we finished yet".
This possibly isn't needed (is subsumed in the STRIPE_INSYNC test),
but it makes it more obvious that the REPLACE will happen before we
think we are finished.
Finally if a NeedReplace device is not UPTODATE then that is an
error. We really must trigger a warning.
This bug was introduced in commit 9a3e1101b827a59ac9036a672f5fa8d5279d0fe2
(md/raid5: detect and handle replacements during recovery.)
which introduced replacement for raid5.
That was in 3.3-rc3, so any stable kernel since then would benefit
from this fix.
Cc: stable@vger.kernel.org (3.3+)
Reported-by: qindehua <13691222965@163.com>
Tested-by: qindehua <qindehua@163.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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We always need to be careful when calling generic_make_request, as it
can start a chain of events which might free something that we are
using.
Here is one place I wasn't careful enough. If the wbio2 is not in
use, then it might get freed at the first generic_make_request call.
So perform all necessary tests first.
This bug was introduced in 3.3-rc3 (24afd80d99) and can cause an
oops, so fix is suitable for any -stable since then.
Cc: stable@vger.kernel.org (3.3+)
Signed-off-by: NeilBrown <neilb@suse.de>
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This patch adds support for the ONYX 3G device (version 1) from ALFA
NETWORK.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This reverts commit 1dd3d123239179fad5de5dc00a6e0014a1918fde.
The email address for the developer now bounces, which means they have
moved on, so remove the driver until someone else from the company steps
up to maintain it.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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FOTG210 is an OTG controller which can be configured as an
USB2.0 host. FOTG210 host is an ehci-like controller with
some differences. First, register layout of FOTG210 is
incompatible with EHCI. Furthermore, FOTG210 is lack of
siTDs which means iTDs are used for both HS and FS ISO
transfer.
Signed-off-by: Yuan-Hsin Chen <yhchen@faraday-tech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The driver failed to take the dynamic ids into account when determining
the device type and therefore all devices were detected as 2-port
devices when using the dynamic-id interface.
Match on the usb-serial-driver field instead of doing redundant id-table
searches.
Reported-by: Anders Hammarquist <iko@iko.pp.se>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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USB spec stats that short packet can only appear at the end
of transfer. Because lost of HC(EHCI/UHCI/OHCI/...) can't
build a full packet from discontinuous buffers, we introduce
the limit in usb_submit_urb() to avoid such kind of bad sg buffers
coming from driver.
The limit might be a bit strict:
- platform has iommu to do sg list mapping
- some host controllers may support to build full packet from
discontinuous buffers.
But considered that most of HCs don't support that, and driver
need work well or keep consistent on different HCs and ARCHs, we
have to introduce the limit.
Currently, only usbtest is reported to pass such sg buffers to HC,
and other users(mass storage, usbfs) don't have the problem.
We don't check it on USB wireless device, because:
- wireless devices can't be attached to common USB
bus(EHCI/UHCI/OHCI/...)
- the max packet size of endpoint may be odd, and often can't
devide 4KB which is a typical usage in usb mass storage application
Reported-by: Konstantin Filatov <kfilatov@parallels.com>
Reported-by: Denis V. Lunev <den@openvz.org>
Cc: Felipe Balbi <balbi@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ttyTHS is consistent with the name used in driver.
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The earlier change to use strlcpy uncovered a bug in the options
argument length calculation causing last character to be truncated.
This makes the actual console to be configured with incorrect
baudrate when specifying the console using console=uart,... syntax.
Bug symptom seen in kernel log output:
Kernel command line: console=uart,mmio,0x90000000,115200
Early serial console at MMIO 0x90000000 (options '11520')
which then results in a invalid baud rate 11520 instead of the
expected 115200 when the console is switched to ttyS0 later
in the boot process.
Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This is a static checker fix and I don't have a way to test it. But
from the context it looks like this is a typo where SCABUFSIZE was
intended instead of sizeof(SCABUFSIZE). SCABUFSIZE is 1024 and
sizeof(int) is 4. I would suspect this is a bad bug.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Drivers should not be putting debug files in /proc/ that is what debugfs
is for, so move the isp1362 driver's debug file to debugfs.
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Drivers should not be putting debug files in /proc/ that is what debugfs
is for, so move the sl811 driver's debug file to debugfs.
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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None of these USB files need idr.h, so don't include it.
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Oops, apparently no-one I cc'd at intel actually bothered to check this
patch for the isci driver:
commit e73823f7a2c921dcf068d34ea03bd682498d9e42
Author: James Bottomley <JBottomley@Parallels.com>
Date: Tue May 7 15:38:18 2013 -0700
[SCSI] libsas: implement > 16 byte CDB support
sci_swab32_cpy needs multiples of four, so for commands that aren't that, it's
rounding the wrong way. fix by doing (len+3)/4 instead of len/4.
Reported-by: Tony Luck <tony.luck@intel.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Ben Herrenschmidt:
"Here is a series of powerpc fixes. It's a bit big, mostly because of
the series of 11 "EEH" patches from Gavin. The EEH (Our IBM specific
PCI/PCIe Enhanced Error Handling) code had been rotting for a while
and this merge window saw a significant rework & fixing of it by Gavin
Shan.
However, that wasn't complete and left some open issues. There were
still a few corner cases that didn't work properly, for example in
relation to hotplug and devices without explicit error handlers. We
had some patches but they weren't quite good enough yet so I left them
off the 3.11 merge window.
Gavin since then fixed it all up, we ran quite a few rounds of testing
and it seems fairly solid (at least probably more than it has ever
been). This should probably have made -rc1 but both Gavin and I took
some vacation so it had to wait for -rc2.
The rest is more bug fixes, mostly to new features recently added, for
example, we missed the cpu table entry for one of the two models of P8
(we didn't realize they had different PVR [Processor Version Register]
values), some module CRC issues, etc..."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (23 commits)
powerpc/perf: BHRB filter configuration should follow the task
powerpc/perf: Ignore separate BHRB privilege state filter request
powerpc/powernv: Mark pnv_pci_init_ioda2_phb() as __init
powerpc/mm: Use the correct SLB(LLP) encoding in tlbie instruction
powerpc/mm: Fix fallthrough bug in hpte_decode
powerpc/pseries: Fix a typo in pSeries_lpar_hpte_insert()
powerpc/eeh: Introdce flag to protect sysfs
powerpc/eeh: Fix unbalanced enable for IRQ
powerpc/eeh: Don't use pci_dev during BAR restore
powerpc/eeh: Use partial hotplug for EEH unaware drivers
powerpc/pci: Partial tree hotplug support
powerpc/eeh: Use safe list traversal when walking EEH devices
powerpc/eeh: Keep PE during hotplug
powerpc/pci/hotplug: Don't need to remove from EEH cache twice
powerpc/pci: Override pcibios_release_device()
powerpc/eeh: Export functions for hotplug
powerpc/eeh: Remove reference to PCI device
powerpc: Fix the corrupt r3 error during MCE handling.
powerpc/perf: Set PPC_FEATURE2_EBB when we register the power8 PMU
powerpc/pseries: Drop "select HOTPLUG"
...
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Pull crypto fixes from Herbert Xu:
"This push fixes a memory corruption issue in caam, as well as
reverting the new optimised crct10dif implementation as it breaks boot
on initrd systems.
Hopefully crct10dif will be reinstated once the supporting code is
added so that it doesn't break boot"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
crypto: caam - Fixed the memory out of bound overwrite issue
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This patch updates the list of maintainers for the staging/comedi
driver.
Signed-off-by: Lidza Louina <lidza.louina@gmail.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The usage of strict_strtol() is not preferred, because
strict_strtol() is obsolete. Thus, kstrtos32() should be
used in order to convert a string to s32. Also, error handling
is added to get rid of a __must_check warning.
This fixes a memory corruption bug as well.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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imx6q contains one Synopsys AHCI SATA controller, But it can't share
ahci_platform driver with other controllers because there are some
misalignments of the generic AHCI controller - the bits definitions of
the HBA registers, the Vendor Specific registers, the AHCI PHY clock
and the AHCI signals adjustment window(GPR13 register).
- CAP_SSS(bit20) of the HOST_CAP is writable, default value is '0',
should be configured to be '1'
- bit0 (only one AHCI SATA port on imx6q) of the HOST_PORTS_IMPL
should be set to be '1'.(default 0)
- One Vendor Specific register HOST_TIMER1MS(offset:0xe0) should be
configured regarding to the frequency of AHB bus clock.
- Configurations of the AHCI PHY clock, and the signal parameters of
the GPR13
Setup its own ahci sata driver, contained the imx6q specific
initialized codes, re-use the generic ahci_platform driver, and keep
the generic ahci_platform driver clean as much as possible.
tj: patch description reformatted
Signed-off-by: Richard Zhu <r65037@freescale.com>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-next
Sarah writes:
xhci: Features for 3.12
In the spirit of "let's stop gossiping around the water cooler and get to work",
here's some xHCI patches for 3.12.
They include a patch for suspend/resume support for xhci platform hosts, two
patches to support showing USB 2.1 link status, and a patch to future-proof the
Intel EHCI to xHCI port switchover.
Sarah Sharp
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Since pcibios_release_device() called by pci_stop_and_remove_bus_device()
has removed the device from the EEH cache, we needn't do that again.
Cc: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fix from Tony Luck:
"Fix EDAC lockdep splat"
* tag 'please-pull-bp-edac' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC: Fix lockdep splat
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1. MEI_INTEROP_TIMEOUT is in seconds not in jiffies
so we use mei_secs_to_jiffies macro
While cold boot is fast this is relevant in resume
2. wait_event_interruptible_timeout can return with
-ERESTARTSYS so do not override it with -ETIMEDOUT
3.Adjust error message
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When powering up, we don't have to clean up the device state
nothing is connected.
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ME HW ready bit is down after hw reset was asserted or on error.
Only on error we need to enter the reset flow, additional reset
need to be prevented when reset was triggered during
initialization , power up/down or a reset is already in progress
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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writet -> write
Tested-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The recent addition of lockdep support to reservations and their subsequent
use by TTM showed up a number of potential problems with the way qxl was using
TTM objects.
a) it was allocating objects, and reserving them later without validating
underneath the reservation, which meant in extreme conditions the objects could
be evicted before the reservation ever used them.
b) it was reserving objects straight after allocating them, but with no
ability to back off should the reservations fail. It now allocates the necessary
objects then does a complete reservation pass on them to avoid deadlocks.
c) it had two lists per release tracking objects, unnecessary complicating
the reservation process.
This patch removes the dual object tracking, adds reservations ticket support
to the release and fence object handling. It then ports the internal fb
drawing code and the userspace facing ioctl to use the new interfaces properly,
along with cleanup up the error path handling in some codepaths.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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In order to fix an issue with reservations we need to create the releases
as pre-pinned objects, this changes the placement interface and bo creation
interface to allow creating pinned objects to save nested reservations later.
This is just a stepping stone to main fix which follows to actually fix how
qxl deals with reservations.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Due to the nature of qxl hw we cannot queue operations while in an irq
context, so we queue these operations as best we can until atomic allocations
fail, and dequeue them later in a work queue.
Daniel looked over the locking on the list and agrees it should be sufficent.
The atomic allocs use no warn, as the last thing we want if we haven't memory
to allocate space for a printk in an irq context is more printks.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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This removes the dependency of the driver on CONFIG_USB_DEBUG and moves
it to us the dynamic debug subsystem instead. Bonus is the fact that we
can now properly determine the exact hardware that is spitting out the
messages.
This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Move all debugging messages in the driver to use the dynamic debug
subsystem, and not rely on CONFIG_USB_DEBUG to turn them on or off.
This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.
It also removes the pointless IRQ_TEST() macro, as that was totally
useless and obviously never used.
Cc: Olav Kongas <ok@artecdesign.ee>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that the debugging macros are cleaned up, just rely on the dynamic
debug code in the kernel to do the debug messages for the driver.
This lets debugging be enabled without having to rebuild the driver, an
important thing for users that can not do it.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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If you want a debug call, just make it, so move to using the
already-there DBG() call. No need to make things more complex than they
really need to be.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Like _BUG_ON(), _WARN_ON() wasn't ever being used, so just delete it, as
obviously things are working properly now (if not, we have bigger
problems...)
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We shouldn't ever panic in a driver, and these calls were never being
used, so just delete them, as obviously the driver is working properly
now (right?)
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This endif is for CONFIG_USB_GADGET_DEBUG_FILES, not CONFIG_USB_DEBUG,
so document it properly.
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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