On Armada 7K/8K we need to explicitly enable the bus clock. The bus clock
is optional because not all the SoCs need them but at least for Armada
7K/8K it is actually mandatory.
The binding documentation is updating accordingly.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This linksys dongle by default comes up in cdc_ether mode.
This patch allows r8152 to claim the device:
Bus 002 Device 002: ID 13b1:0041 Linksys
Signed-off-by: Grant Grundler <grundler@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull x86 fixes from Thomas Gleixner:
"This contains the following fixes and improvements:
- Avoid dereferencing an unprotected VMA pointer in the fault signal
generation code
- Fix inline asm call constraints for GCC 4.4
- Use existing register variable to retrieve the stack pointer
instead of forcing the compiler to create another indirect access
which results in excessive extra 'mov %rsp, %<dst>' instructions
- Disable branch profiling for the memory encryption code to prevent
an early boot crash
- Fix a sparse warning caused by casting the __user annotation in
__get_user_asm_u64() away
- Fix an off by one error in the loop termination of the error patch
in the x86 sysfs init code
- Add missing CPU IDs to various Intel specific drivers to enable the
functionality on recent hardware
- More (init) constification in the numachip code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm: Use register variable to get stack pointer value
x86/mm: Disable branch profiling in mem_encrypt.c
x86/asm: Fix inline asm call constraints for GCC 4.4
perf/x86/intel/uncore: Correct num_boxes for IIO and IRP
perf/x86/intel/rapl: Add missing CPU IDs
perf/x86/msr: Add missing CPU IDs
perf/x86/intel/cstate: Add missing CPU IDs
x86: Don't cast away the __user in __get_user_asm_u64()
x86/sysfs: Fix off-by-one error in loop termination
x86/mm: Fix fault error path using unsafe vma pointer
x86/numachip: Add const and __initconst to numachip2_clockevent
Pull irq fixes from Thomas Gleixner:
- Add a missing NULL pointer check in free_irq()
- Fix a memory leak/memory corruption in the generic irq chip
- Add missing rcu annotations for radix tree access
- Use ffs instead of fls when extracting data from a chip register in
the MIPS GIC irq driver
- Fix the unmasking of IPI interrupts in the MIPS GIC driver so they
end up at the target CPU and not at CPU0
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irq/generic-chip: Don't replace domain's name
irqdomain: Add __rcu annotations to radix tree accessors
irqchip/mips-gic: Use effective affinity to unmask
irqchip/mips-gic: Fix shifts to extract register fields
genirq: Check __free_irq() return value for NULL
Commit 2ca492e22c has moved the call to 'kfifo_alloc()' from after the
main 'if' statement to before it.
But it has not updated the error handling paths accordingly.
Fix all that:
- if 'kfifo_alloc()' fails we can return directly
- direct returns after 'kfifo_alloc()' must now go to 'out_mbox_free'
- 'goto out_mbox_free' must be replaced by 'goto out', otherwise the
'[pcc_]mbox_free_channel()' call will be missed.
Fixes: 2ca492e22c ("hwmon: (xgene) Fix crash when alarm occurs before driver probe")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add missing break in iio_simple_dummy_write_event_config() for the voltage
threshold event enable attribute. Without this writing to the
in_voltage0_thresh_rising_en always returns -EINVAL even though the change
was correctly applied.
Fixes: 3e34e650db ("iio: dummy: Demonstrate the usage of new channel types")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
"uuid" must be invisible if both ns->uuid and ns->nguid are unset,
not if either one is.
Fixes: d934f9848a "nvme: provide UUID value to userspace"
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The current shift of st->rx[2] left shifts a u8 24 bits left,
promotes the integer to a an int and then to a unsigned u64. If
the top bit of st->rx[2] is set then we end up with all the upper
bits being set to 1. Fix this by casting st->rx[2] to a u64 before
the 24 bit left shift.
Detected by CoverityScan CID#144940 ("Unintended sign extension")
Fixes: 2919fa54ef ("staging: iio: meter: new driver for ADE7759 devices")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Eight mostly minor fixes for recently discovered issues in drivers.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Eight mostly minor fixes for recently discovered issues in drivers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ILLEGAL REQUEST + ASC==27 => target failure
scsi: aacraid: Add a small delay after IOP reset
scsi: scsi_transport_fc: Also check for NOTPRESENT in fc_remote_port_add()
scsi: scsi_transport_fc: set scsi_target_id upon rescan
scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse nlmsg properly
scsi: aacraid: error: testing array offset 'bus' after use
scsi: lpfc: Don't return internal MBXERR_ERROR code from probe function
scsi: aacraid: Fix 2T+ drives on SmartIOC-2000
Newly discovered species of fujitsu laptops break some assumptions about
ACPI device pairings.
fujitsu-laptop:
- Don't oops when FUJ02E3 is not presnt
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Merge tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform drivers fix from Darren Hart:
"Newly discovered species of fujitsu laptops break some assumptions
about ACPI device pairings.
fujitsu-laptop: Don't oops when FUJ02E3 is not present"
* tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt
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Merge tag 'led_fixes-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED fixes from Jacek Anaszewski:
"Four fixes for the as3645a LED flash controller and one update to
MAINTAINERS"
* tag 'led_fixes-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
MAINTAINERS: Add entry for MediaTek PMIC LED driver
as3645a: Unregister indicator LED on device unbind
as3645a: Use integer numbers for parsing LEDs
dt: bindings: as3645a: Use LED number to refer to LEDs
as3645a: Use ams,input-max-microamp as documented in DT bindings
some register errors and some clocks that should be critical
for safe usage.
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Merge tag 'v4.14-rockchip-clkfixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-fixes
Pull Rockchip clk driver fixes from Heiko Stuebner:
Some smallish fixes for the rk3128 clock support including
some register errors and some clocks that should be critical
for safe usage.
* tag 'v4.14-rockchip-clkfixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: add sclk_timer5 as critical clock on rk3128
clk: rockchip: fix up rk3128 pvtm and mipi_24m gate regs error
clk: rockchip: add pclk_pmu as critical clock on rk3128
Pull MD fixes from Shaohua Li:
"A few fixes for MD. Mainly fix a problem introduced in 4.13, which we
retry bio for some code paths but not all in some situations"
* tag 'md/4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md/raid5: cap worker count
dm-raid: fix a race condition in request handling
md: fix a race condition for flush request handling
md: separate request handling
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Merge tag 'drm-fixes-for-v4.14-rc3' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Regular fixes pull, some amdkfd, amdgpu, etnaviv, sun4i, qxl, tegra
fixes.
I've got an outstanding pull for i915 but it wasn't on an rc2 base so
I wanted to ship these out first, I might get to it before rc3 or I
might not"
* tag 'drm-fixes-for-v4.14-rc3' of git://people.freedesktop.org/~airlied/linux:
drm/tegra: trace: Fix path to include
qxl: fix framebuffer unpinning
drm/sun4i: cec: Enable back CEC-pin framework
drm/amdkfd: Print event limit messages only once per process
drm/amdkfd: Fix kernel-queue wrapping bugs
drm/amdkfd: Fix incorrect destroy_mqd parameter
drm/radeon: disable hard reset in hibernate for APUs
drm/amdgpu: revert tile table update for oland
etnaviv: fix gem object list corruption
etnaviv: fix submit error path
qxl: fix primary surface handling
drm/amdkfd: check for null dev to avoid a null pointer dereference
Including:
* A comment fix for 'struct iommu_ops'
* Format string fixes for AMD IOMMU, unfortunatly I missed that
during review.
* Limit mediatek physical addresses to 32 bit for v7s to fix a
warning triggered in io-page-table code.
* Fix dma-sync in io-pgtable-arm-v7s code
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Merge tag 'iommu-fixes-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- A comment fix for 'struct iommu_ops'
- Format string fixes for AMD IOMMU, unfortunatly I missed that during
review.
- Limit mediatek physical addresses to 32 bit for v7s to fix a warning
triggered in io-page-table code.
- Fix dma-sync in io-pgtable-arm-v7s code
* tag 'iommu-fixes-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Fix comment for iommu_ops.map_sg
iommu/amd: pr_err() strings should end with newlines
iommu/mediatek: Limit the physical address in 32bit for v7s
iommu/io-pgtable-arm-v7s: Need dma-sync while there is no QUIRK_NO_DMA
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Merge tag 'for-linus-4.14c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- avoid a warning when compiling with clang
- consider read-only bits in xen-pciback when writing to a BAR
- fix a boot crash of pv-domains
* tag 'for-linus-4.14c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables mapping
xen-pciback: relax BAR sizing write value check
x86/xen: clean up clang build warning
Commit 1a1c116f3d removes nlmsg_len calculation in
ibnl_put_attr causing netlink messages to be rejected due
to incorrect length.
Add nlmsg_end after all attributes are appended to calculate
the nlmsg_len.
Fixes: 1a1c116f3d ("RDMA/netlink: Simplify the put_msg and put_attr")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
The in-kernel 'library' API can be called by drivers to help
interaction with an IBM XSL on a POWER9 system.
The cxllib_handle_fault() API is used to handle memory fault. All memory
pages of the specified buffer have to be handled but under certain
conditions,the last page may not be touched, and the address the
adapter is trying to access is never sent to the kernel for resolution.
This patch reworks start address of the loop with an address aligned on
the page size. In this context, the last page is not missed.
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Fixes: 3ced8d7300 ("cxl: Export library to support IBM XSL");
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This fixes an APEI problem that may cause a reported error to be
missed due to a race condition.
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Merge tag 'acpi-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"This fixes an APEI problem that may cause a reported error to be
missed due to a race condition"
* tag 'acpi-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / APEI: clear error status before acknowledging the error
- Fix a deadlock in the operating performance points (OPP)
framework caused by a notifier callback taking a lock that's
already held by its caller (Viresh Kumar).
- Prevent the ti-cpufreq and cpufreq-dt-platdev drivers from
attempting to register conflicting device objects which
triggers a warning from sysfs (Suniel Mahesh).
- Drop a stale reference to a piece of intel_pstate documentation
that's not in the tree any more (Rafael Wysocki).
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Merge tag 'pm-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a deadlock in the operating performance points (OPP)
framework introduced during the 4.11 cycle, more issues with duplicate
device objects for cpufreq-dt and cpufreq documentation.
Specifics:
- Fix a deadlock in the operating performance points (OPP) framework
caused by a notifier callback taking a lock that's already held by
its caller (Viresh Kumar).
- Prevent the ti-cpufreq and cpufreq-dt-platdev drivers from
attempting to register conflicting device objects which triggers a
warning from sysfs (Suniel Mahesh).
- Drop a stale reference to a piece of intel_pstate documentation
that's not in the tree any more (Rafael Wysocki)"
* tag 'pm-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: docs: Drop intel-pstate.txt from index.txt
cpufreq: dt: Fix sysfs duplicate filename creation for platform-device
PM / OPP: Call notifier without holding opp_table->lock
- a few core fixes
- a few ipoib fixes
- a few mlx5 fixes
- a 7 patch hfi1 related series
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Second -rc update for 4.14.
Both Mellanox and Intel had a series of -rc fixes that landed this
week. The Mellanox bunch is spread throughout the stack and not just
in their driver, where as the Intel bunch was mostly in the hfi1
driver. And, several of the fixes in the hfi1 driver were more than
just simple 5 line fixes. As a result, the hfi1 driver fixes has a
sizable LOC count.
Everything else is as one would expect in an RC cycle in terms of LOC
count. One item that might jump out and make you think "That's not an
rc item" is the fix that corrects a typo. But, that change fixes a
typo in a user visible API that was just added in this merge window,
so if we fix it now, we can fix it. If we don't, the typo is in the
API forever. Another that might not appear to be a fix at first glance
is the Simplify mlx5_ib_cont_pages patch, but the simplification
allows them to fix a bug in the existing function whenever the length
of an SGE exceeded page size. We also had to revert one patch from the
merge window that was wrong.
Summary:
- a few core fixes
- a few ipoib fixes
- a few mlx5 fixes
- a 7-patch hfi1 related series"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/hfi1: Unsuccessful PCIe caps tuning should not fail driver load
IB/hfi1: On error, fix use after free during user context setup
Revert "IB/ipoib: Update broadcast object if PKey value was changed in index 0"
IB/hfi1: Return correct value in general interrupt handler
IB/hfi1: Check eeprom config partition validity
IB/hfi1: Only reset QSFP after link up and turn off AOC TX
IB/hfi1: Turn off AOC TX after offline substates
IB/mlx5: Fix NULL deference on mlx5_ib_update_xlt failure
IB/mlx5: Simplify mlx5_ib_cont_pages
IB/ipoib: Fix inconsistency with free_netdev and free_rdma_netdev
IB/ipoib: Fix sysfs Pkey create<->remove possible deadlock
IB: Correct MR length field to be 64-bit
IB/core: Fix qp_sec use after free access
IB/core: Fix typo in the name of the tag-matching cap struct
mv88e6xxx_g2_irq_free locks the registers mutex, but not
mv88e6xxx_g1_irq_free, which results in a stack trace from
assert_reg_lock when unloading the mv88e6xxx module. Fix this.
Fixes: 3460a5770c ("net: dsa: mv88e6xxx: Mask g1 interrupts and free interrupt")
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Re-enable the MAC receiver by setting CONFIG_RE before powering down,
as instructed in section 6.3.5.1 of [1]. Without this the MAC fails
to receive WoL packets and never wakes up.
[1] DWC Ethernet QoS Databook 4.10a October 2014
Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add hook to stmmac_pltfr_pm_ops for suspend / resume handling.
Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ports with the same VLAN must all be in the same bridge. However the
CPU and DSA ports need to be in multiple VLANs spread over multiple
bridges. So exclude them when performing this test.
Fixes: b2f81d304c ("net: dsa: add CPU and DSA ports as VLAN members")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch stops the internal MAC Tx clock from being enabled as the
internal clock isn't used. The definition used for the bit controlling
this behaviour is renamed as well as it was wrongly named (bit 4 of
GMAC_CTRL_2_REG).
Fixes: 3919357fb0 ("net: mvpp2: initialize the GMAC when using a port")
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The private port_list array has a list of pointers to mvpp2_port
instances. This list is allocated given the number of ports enabled in
the device tree, but the pointers are set using the port-id property. If
on a single port is enabled, the port_list array will be of size 1, but
when registering the port, if its id is not 0 the driver will crash.
Other crashes were encountered in various situations.
This fixes the issue by using an index not equal to the value of the
port-id property.
Fixes: 3f518509de ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Yan Markman <ymarkman@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Parsing fragmentation detection failed due to wrong configured
parser TCAM entry's. Some traffic was marked as fragmented in RX
descriptor, even it wasn't IP fragmented. The hardware also failed to
calculate checksums which lead to use software checksum and caused
performance degradation.
Fixes: 3f518509de ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix memory leak of cipher_api.
Fixes: 33d2f09fcb (dm crypt: introduce new format of cipher with "capi:" prefix)
Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Just like done in d2bd05d88d ("xen-pciback: return proper values during
BAR sizing") for the ROM BAR, ordinary ones also shouldn't compare the
written value directly against ~0, but consider the r/o bits at the
bottom (if any).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Add compatible string to use this generic glue layer to support
Spreadtrum SC9860 platform's dwc3 controller.
Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The driver triggers actions on both edges of the vbus signal.
The former PIO controller was triggering IRQs on both falling and rising edges
by default. Newer PIO controller don't, so it's better to set it explicitly to
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING.
Without this patch we may trigger the connection with host but only on some
bouncing signal conditions and thus lose connecting events.
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: stable <stable@vger.kernel.org> # v4.4+
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
By submitting completed transfers to the system workqueue there is no
guarantee that completion events will be queued up in the correct order,
as in multi-processor systems there is a thread running for each
processor and the work items are not bound to a particular core.
This means that several completions are in the queue at the same time,
they may be processed in parallel and complete out of order, resulting
in data appearing corrupt when read by userspace.
Create a single-threaded workqueue for FunctionFS so that data completed
requests is passed to userspace in the order in which they complete.
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch fixes an issue that the usbhsf_fifo_clear() is possible
to cause 10 msec delay if the pipe is RX direction and empty because
the FRDY bit will never be set to 1 in such case.
Fixes: e8d548d549 ("usb: renesas_usbhs: fifo became independent from pipe.")
Cc: <stable@vger.kernel.org> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch fixes an issue that the driver sets the BCLR bit of
{C,Dn}FIFOCTR register to 1 even when it's non-DCP pipe and
the FRDY bit of {C,Dn}FIFOCTR register is set to 1.
Fixes: e8d548d549 ("usb: renesas_usbhs: fifo became independent from pipe.")
Cc: <stable@vger.kernel.org> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch fixes an issue that this driver cannot go status stage
in control read when the req.zero is set to 1 and the len in
usb3_write_pipe() is set to 0. Otherwise, if we use g_ncm driver,
usb enumeration takes long time (5 seconds or more).
Fixes: 746bfe63bb ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
According to the datasheet of R-Car Gen3, the Pn_RAMMAP.Pn_MPKT should
be set to one of 8, 16, 32, 64, 512 and 1024. Otherwise, when a gadget
driver uses an interrupt endpoint, unexpected behavior happens. So,
this patch fixes it.
Fixes: 746bfe63bb ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
When bRequestType & USB_DIR_IN is false and req.length is 0 in control
transfer, since it means non-data, this driver should not set the mode
as control write. So, this patch fixes it.
Fixes: 746bfe63bb ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
A recent change to the synchronization in dummy-hcd was incorrect.
The issue was that dummy_udc_stop() contained no locking and therefore
could race with various gadget driver callbacks, and the fix was to
add locking and issue the callbacks with the private spinlock held.
UDC drivers aren't supposed to do this. Gadget driver callback
routines are allowed to invoke functions in the UDC driver, and these
functions will generally try to acquire the private spinlock. This
would deadlock the driver.
The correct solution is to drop the spinlock before issuing callbacks,
and avoid races by emulating the synchronize_irq() call that all real
UDC drivers must perform in their ->udc_stop() routines after
disabling interrupts. This involves adding a flag to dummy-hcd's
private structure to keep track of whether interrupts are supposed to
be enabled, and adding a counter to keep track of ongoing callbacks so
that dummy_udc_stop() can wait for them all to finish.
A real UDC driver won't receive disconnect, reset, suspend, resume, or
setup events once it has disabled interrupts. dummy-hcd will receive
them but won't try to issue any gadget driver callbacks, which should
be just as good.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Fixes: f16443a034 ("USB: gadgetfs, dummy-hcd, net2280: fix locking for callbacks")
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The dummy-hcd HCD/UDC emulator tries not to do too much work during
each timer interrupt. But it doesn't try very hard; currently all
it does is limit the total amount of bulk data transferred. Other
transfer types aren't limited, and URBs that transfer no data (because
of an error, perhaps) don't count toward the limit, even though on a
real USB bus they would consume at least a minimum overhead.
This means it's possible to get the driver stuck in an infinite loop,
for example, if the host class driver resubmits an URB every time it
completes (which is common for interrupt URBs). Each time the URB is
resubmitted it gets added to the end of the pending-URBs list, and
dummy-hcd doesn't stop until that list is empty. Andrey Konovalov was
able to trigger this failure mode using the syzkaller fuzzer.
This patch fixes the infinite-loop problem by restricting the URBs
handled during each timer interrupt to those that were already on the
pending list when the interrupt routine started. Newly added URBs
won't be processed until the next timer interrupt. The problem of
properly accounting for non-bulk bandwidth (as well as packet and
transaction overhead) is not addressed here.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
The dummy-hcd UDC driver is not careful about the way it handles
connection speeds. It ignores the module parameter that is supposed
to govern the maximum connection speed and it doesn't set the HCD
flags properly for the case where it ends up running at full speed.
The result is that in many cases, gadget enumeration over dummy-hcd
fails because the bMaxPacketSize byte in the device descriptor is set
incorrectly. For example, the default settings call for a high-speed
connection, but the maxpacket value for ep0 ends up being set for a
Super-Speed connection.
This patch fixes the problem by initializing the gadget's max_speed
and the HCD flags correctly.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
