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Some time ago changes were made to stop referring to clearing the
hardware pipeline as a "tag process." Fix a comment to use the
newer terminology.
Get rid of a pointless double-negation of the Boolean toward_ipa
flag in ipa_endpoint_config().
make ipa_endpoint_exit_one() private; it's only referenced inside
"ipa_endpoint.c".
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There are place holder functions in the GSI code that do nothing.
Remove these, knowing we can add something back in their place if
they're really needed someday.
Some of these are inverse functions (such as teardown to match setup).
Explicitly comment that there is no inverse in these cases.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There are place holder functions in the IPA code that do nothing.
For the most part these are inverse functions, for example, once the
routing or filter tables are set up there is no need to perform any
matching teardown activity at shutdown, or in the case of an error.
These can be safely removed, resulting in some code simplification.
Add comments in these spots making it explicit that there is no
inverse.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In ipa_modem_stop(), if the modem netdev pointer is non-null we call
ipa_stop(). We check for an error and if one is returned we handle
it. But ipa_stop() never returns an error, so this extra handling
is unnecessary. Simplify the code in ipa_modem_stop() based on the
knowledge no error handling is needed at this spot.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In ipa_modem_start(), we set endpoint netdev pointers before the
network device is registered. If registration fails, we don't undo
those assignments. Instead, wait to assign the netdev pointer until
after registration succeeds.
Set these endpoint netdev pointers to NULL in ipa_modem_stop()
before unregistering the network device.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
On IPA v3.5.1, the sequencer type for the modem TX endpoint does not
define the replication portion in the same way the downstream code
does. This difference doesn't affect the behavior of the upstream
code, but I'd prefer the two code bases use the same configuration
value here.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
I no longer know why a validation check ensured the size of an entry
passed to gsi_trans_pool_init() was restricted to be a multiple of 8.
For 32-bit builds, this condition doesn't always hold, and for DMA
pools, the size is rounded up to a power of 2 anyway.
Remove this restriction.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Conflicts:
MAINTAINERS
- keep Chandrasekar
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
- simple fix + trust the code re-added to param.c in -next is fine
include/linux/bpf.h
- trivial
include/linux/ethtool.h
- trivial, fix kdoc while at it
include/linux/skmsg.h
- move to relevant place in tcp.c, comment re-wrapped
net/core/skmsg.c
- add the sk = sk // sk = NULL around calls
net/tipc/crypto.c
- trivial
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Even if the current mapping is correct for the 1 CPU and 2 CPU cases
(currently enetc is included in SoCs with up to 2 CPUs only), better
use a generic rule for the mapping to cover all possible cases.
The number of CPUs is the same as the number of interrupt vectors:
Per device Tx rings -
device_tx_ring[idx], where idx = 0..n_rings_total-1
Per interrupt vector Tx rings -
int_vector[i].ring[j], where i = 0..n_int_vects-1
j = 0..n_rings_per_v-1
Mapping rule -
n_rings_per_v = n_rings_total / n_int_vects
for i = 0..n_int_vects - 1:
for j = 0..n_rings_per_v - 1:
idx = n_int_vects * j + i
int_vector[i].ring[j] <- device_tx_ring[idx]
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210409071613.28912-1-claudiu.manoil@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The blamed commit introduced a bit in the TX software buffer descriptor
structure for determining whether a BD is final or not; we rearm the TX
interrupt vector for every frame (hence final BD) transmitted.
But there is a problem with the patch: it replaced a condition whose
expression is a bool which was evaluated at the beginning of the "while"
loop with a bool expression that is evaluated on the spot: tx_swbd->is_eof.
The problem with the latter expression is that the tx_swbd has already
been incremented at that stage, so the tx_swbd->is_eof check is in fact
with the _next_ software BD. Which is _not_ final.
The effect is that the CPU is in 100% load with ksoftirqd because it
does not acknowledge the TX interrupt, so the handler keeps getting
called again and again.
The fix is to restore the code structure, and keep the local bool is_eof
variable, just to assign it the tx_swbd->is_eof value instead of
!!tx_swbd->skb.
Fixes: d504498d2e ("net: enetc: add a dedicated is_eof bit in the TX software BD")
Reported-by: Alex Marginean <alexandru.marginean@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Link: https://lore.kernel.org/r/20210409192759.3895104-1-olteanv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Saeed Mahameed says:
====================
mlx5-next 2021-04-09
This pr contains changes from mlx5-next branch,
already reviewed on netdev and rdma mailing lists, links below.
1) From Leon, Dynamically assign MSI-X vectors count
Already Acked by Bjorn Helgaas.
https://patchwork.kernel.org/project/netdevbpf/cover/20210314124256.70253-1-leon@kernel.org/
2) Cleanup series:
https://patchwork.kernel.org/project/netdevbpf/cover/20210311070915.321814-1-saeed@kernel.org/
From Mark, E-Switch cleanups and refactoring, and the addition
of single FDB mode needed HW bits.
From Mikhael, Remove unused struct field
From Saeed, Cleanup W=1 prototype warning
From Zheng, Esw related cleanup
From Tariq, User order-0 page allocation for EQs
* 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
net/mlx5: Implement sriov_get_vf_total_msix/count() callbacks
net/mlx5: Dynamically assign MSI-X vectors count
net/mlx5: Add dynamic MSI-X capabilities bits
PCI/IOV: Add sysfs MSI-X vector assignment interface
net/mlx5: Use order-0 allocations for EQs
net/mlx5: Add IFC bits needed for single FDB mode
net/mlx5: E-Switch, Refactor send to vport to be more generic
RDMA/mlx5: Use representor E-Switch when getting netdev and metadata
net/mlx5: E-Switch, Add eswitch pointer to each representor
net/mlx5: E-Switch, Add match on vhca id to default send rules
net/mlx5: Remove unused mlx5_core_health member recover_work
net/mlx5: simplify the return expression of mlx5_esw_offloads_pair()
net/mlx5: Cleanup prototype warning
====================
Link: https://lore.kernel.org/r/20210409200704.10886-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eliminate the following coccicheck warning:
drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c:529:3-9: WARNING:
NULL check before some freeing functions is not needed.
drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c:533:2-8: WARNING:
NULL check before some freeing functions is not needed.
drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c:161:2-7: WARNING:
NULL check before some freeing functions is not needed.
drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c:327:3-9: WARNING:
NULL check before some freeing functions is not needed.
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Link: https://lore.kernel.org/r/20210409115339.4598-1-linqiheng@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit says:
====================
net: make PHY PM ops a no-op if MAC driver manages PHY PM
Resume callback of the PHY driver is called after the one for the MAC
driver. The PHY driver resume callback calls phy_init_hw(), and this is
potentially problematic if the MAC driver calls phy_start() in its resume
callback. One issue was reported with the fec driver and a KSZ8081 PHY
which seems to become unstable if a soft reset is triggered during aneg.
The new flag allows MAC drivers to indicate that they take care of
suspending/resuming the PHY. Then the MAC PM callbacks can handle
any dependency between MAC and PHY PM.
====================
Link: https://lore.kernel.org/r/9e695411-ab1d-34fe-8b90-3e8192ab84f6@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use the new mac_managed_pm flag to indicate that the driver takes care
of PHY power management.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use the new mac_managed_pm flag to work around an issue with KSZ8081 PHY
that becomes unstable when a soft reset is triggered during aneg.
Reported-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Tested-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Resume callback of the PHY driver is called after the one for the MAC
driver. The PHY driver resume callback calls phy_init_hw(), and this is
potentially problematic if the MAC driver calls phy_start() in its resume
callback. One issue was reported with the fec driver and a KSZ8081 PHY
which seems to become unstable if a soft reset is triggered during aneg.
The new flag allows MAC drivers to indicate that they take care of
suspending/resuming the PHY. Then the MAC PM callbacks can handle
any dependency between MAC and PHY PM.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.12-rc7, including fixes from can, ipsec,
mac80211, wireless, and bpf trees.
No scary regressions here or in the works, but small fixes for 5.12
changes keep coming.
Current release - regressions:
- virtio: do not pull payload in skb->head
- virtio: ensure mac header is set in virtio_net_hdr_to_skb()
- Revert "net: correct sk_acceptq_is_full()"
- mptcp: revert "mptcp: provide subflow aware release function"
- ethernet: lan743x: fix ethernet frame cutoff issue
- dsa: fix type was not set for devlink port
- ethtool: remove link_mode param and derive link params from driver
- sched: htb: fix null pointer dereference on a null new_q
- wireless: iwlwifi: Fix softirq/hardirq disabling in
iwl_pcie_enqueue_hcmd()
- wireless: iwlwifi: fw: fix notification wait locking
- wireless: brcmfmac: p2p: Fix deadlock introduced by avoiding the
rtnl dependency
Current release - new code bugs:
- napi: fix hangup on napi_disable for threaded napi
- bpf: take module reference for trampoline in module
- wireless: mt76: mt7921: fix airtime reporting and related tx hangs
- wireless: iwlwifi: mvm: rfi: don't lock mvm->mutex when sending
config command
Previous releases - regressions:
- rfkill: revert back to old userspace API by default
- nfc: fix infinite loop, refcount & memory leaks in LLCP sockets
- let skb_orphan_partial wake-up waiters
- xfrm/compat: Cleanup WARN()s that can be user-triggered
- vxlan, geneve: do not modify the shared tunnel info when PMTU
triggers an ICMP reply
- can: fix msg_namelen values depending on CAN_REQUIRED_SIZE
- can: uapi: mark union inside struct can_frame packed
- sched: cls: fix action overwrite reference counting
- sched: cls: fix err handler in tcf_action_init()
- ethernet: mlxsw: fix ECN marking in tunnel decapsulation
- ethernet: nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx
- ethernet: i40e: fix receiving of single packets in xsk zero-copy
mode
- ethernet: cxgb4: avoid collecting SGE_QBASE regs during traffic
Previous releases - always broken:
- bpf: Refuse non-O_RDWR flags in BPF_OBJ_GET
- bpf: Refcount task stack in bpf_get_task_stack
- bpf, x86: Validate computation of branch displacements
- ieee802154: fix many similar syzbot-found bugs
- fix NULL dereferences in netlink attribute handling
- reject unsupported operations on monitor interfaces
- fix error handling in llsec_key_alloc()
- xfrm: make ipv4 pmtu check honor ip header df
- xfrm: make hash generation lock per network namespace
- xfrm: esp: delete NETIF_F_SCTP_CRC bit from features for esp
offload
- ethtool: fix incorrect datatype in set_eee ops
- xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory
model
- openvswitch: fix send of uninitialized stack memory in ct limit
reply
Misc:
- udp: add get handling for UDP_GRO sockopt"
* tag 'net-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (182 commits)
net: fix hangup on napi_disable for threaded napi
net: hns3: Trivial spell fix in hns3 driver
lan743x: fix ethernet frame cutoff issue
net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh
net: dsa: lantiq_gswip: Configure all remaining GSWIP_MII_CFG bits
net: dsa: lantiq_gswip: Don't use PHY auto polling
net: sched: sch_teql: fix null-pointer dereference
ipv6: report errors for iftoken via netlink extack
net: sched: fix err handler in tcf_action_init()
net: sched: fix action overwrite reference counting
Revert "net: sched: bump refcount for new action in ACT replace mode"
ice: fix memory leak of aRFS after resuming from suspend
i40e: Fix sparse warning: missing error code 'err'
i40e: Fix sparse error: 'vsi->netdev' could be null
i40e: Fix sparse error: uninitialized symbol 'ring'
i40e: Fix sparse errors in i40e_txrx.c
i40e: Fix parameters in aq_get_phy_register()
nl80211: fix beacon head validation
bpf, x86: Validate computation of branch displacements for x86-32
bpf, x86: Validate computation of branch displacements for x86-64
...
Pull io_uring fixes from Jens Axboe:
"Two minor fixups for the reissue logic, and one for making sure that
unbounded work is canceled on io-wq exit"
* tag 'io_uring-5.12-2021-04-09' of git://git.kernel.dk/linux-block:
io-wq: cancel unbounded works on io-wq destroy
io_uring: fix rw req completion
io_uring: clear F_REISSUE right after getting it
Pull devicetree fixes from Rob Herring:
- Fix fw_devlink failure with ".*,nr-gpios" properties
- Doc link reference fixes from Mauro
- Fixes for unaligned FDT handling found on OpenRisc. First, avoid
crash with better error handling when unflattening an unaligned FDT.
Second, fix memory allocations for FDTs to ensure alignment.
* tag 'devicetree-fixes-for-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: property: fw_devlink: do not link ".*,nr-gpios"
dt-bindings:iio:adc: update motorola,cpcap-adc.yaml reference
dt-bindings: fix references for iio-bindings.txt
dt-bindings: don't use ../dir for doc references
of: unittest: overlay: ensure proper alignment of copied FDT
of: properly check for error returned by fdt_get_name()
Pull drm fixes from Dave Airlie:
"Was relatively quiet this week, but still a few pulls came in, pretty
much small fixes across the board, a couple of regression fixes in the
amdgpu/radeon code, msm has a few minor fixes across the board, a
panel regression fix also.
amdgpu:
- DCN3 fix
- Fix CAC setting regression for TOPAZ
- Fix ttm regression
radeon:
- Fix ttm regression
msm:
- a5xx/a6xx timestamp fix
- microcode version check
- fail path fix
- block programming fix
- error removal fix
i915:
- Fix invalid access to ACPI _DSM objects
xen:
- Fix use-after-free in xen
- minor duplicate defintion cleanup
vc4:
- Reduce fifo threshold on hvs4 to fix a fifo full error
- minor redunantant assignment cleanup
panel:
- Disable TE support for Droid4 and N950"
* tag 'drm-fixes-2021-04-10' of git://anongit.freedesktop.org/drm/drm:
drm/vc4: crtc: Reduce PV fifo threshold on hvs4
drm/vc4: plane: Remove redundant assignment
drm/amdgpu/smu7: fix CAC setting on TOPAZ
drm/radeon: Fix size overflow
drm/amdgpu: Fix size overflow
drm/i915: Fix invalid access to ACPI _DSM objects
drm/amd/display: Add missing mask for DCN3
drm/panel: panel-dsi-cm: disable TE for now
drm/msm/disp/dpu1: program 3d_merge only if block is attached
drm/msm: a6xx: fix version check for the A650 SQE microcode
drm/msm: Fix a5xx/a6xx timestamps
drm/msm: Fix removal of valid error case when checking speed_bin
drm/msm: Set drvdata to NULL when msm_drm_init() fails
drivers: gpu: drm: xen_drm_front_drm_info is declared twice
gpu/xen: Fix a use after free in xen_drm_drv_init
napi_disable() is subject to an hangup, when the threaded
mode is enabled and the napi is under heavy traffic.
If the relevant napi has been scheduled and the napi_disable()
kicks in before the next napi_threaded_wait() completes - so
that the latter quits due to the napi_disable_pending() condition,
the existing code leaves the NAPI_STATE_SCHED bit set and the
napi_disable() loop waiting for such bit will hang.
This patch addresses the issue by dropping the NAPI_STATE_DISABLE
bit test in napi_thread_wait(). The later napi_threaded_poll()
iteration will take care of clearing the NAPI_STATE_SCHED.
This also addresses a related problem reported by Jakub:
before this patch a napi_disable()/napi_enable() pair killed
the napi thread, effectively disabling the threaded mode.
On the patched kernel napi_disable() simply stops scheduling
the relevant thread.
v1 -> v2:
- let the main napi_thread_poll() loop clear the SCHED bit
Reported-by: Jakub Kicinski <kuba@kernel.org>
Fixes: 29863d41bb ("net: implement threaded-able napi poll loop support")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/883923fa22745a9589e8610962b7dc59df09fb1f.1617981844.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[<vendor>,]nr-gpios property is used by some GPIO drivers[0] to indicate
the number of GPIOs present on a system, not define a GPIO. nr-gpios is
not configured by #gpio-cells and can't be parsed along with other
"*-gpios" properties.
nr-gpios without the "<vendor>," prefix is not allowed by the DT
spec[1], so only add exception for the ",nr-gpios" suffix and let the
error message continue being printed for non-compliant implementations.
[0] nr-gpios is referenced in Documentation/devicetree/bindings/gpio:
- gpio-adnp.txt
- gpio-xgene-sb.txt
- gpio-xlp.txt
- snps,dw-apb-gpio.yaml
[1] Link: cb53a16a1e/schemas/gpio/gpio-consumer.yaml (L20)
Fixes errors such as:
OF: /palmbus@300000/gpio@600: could not find phandle
Fixes: 7f00be96f1 ("of: property: Add device link support for interrupt-parent, dmas and -gpio(s)")
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: stable@vger.kernel.org # v5.5+
Link: https://lore.kernel.org/r/20210405222540.18145-1-ilya.lipnitskiy@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
Pull selinux fixes from Paul Moore:
"Three SELinux fixes.
These fix known problems relating to (re)loading SELinux policy or
changing the policy booleans, and pass our test suite without problem"
* tag 'selinux-pr-20210409' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix race between old and new sidtab
selinux: fix cond_list corruption when changing booleans
selinux: make nslot handling in avtab more robust
Pull vdpa/mlx5 fixes from Michael Tsirkin:
"Last minute fixes.
These all look like something we are better off having
than not ..."
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa/mlx5: Fix suspend/resume index restoration
vdpa/mlx5: Fix wrong use of bit numbers
vdpa/mlx5: Retrieve BAR address suitable any function
vdpa/mlx5: Use the correct dma device when registering memory
vdpa/mlx5: should exclude header length and fcs from mtu
Pull remoteproc fixes from Bjorn Andersson:
"This fixes an issue with firmware loading on the TI K3 PRU, fixes
compatibility with GNU binutils for the same and resolves link error
due to a 64-bit division in the Qualcomm PIL info.
It also recognizes Mathieu Poirier as co-maintainer of the remoteproc
and rpmsg subsystems"
* tag 'rproc-v5.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
remoteproc: pru: Fix firmware loading crashes on K3 SoCs
remoteproc: pru: Fix loading of GNU Binutils ELF
MAINTAINERS: Add co-maintainer for remoteproc/RPMSG subsystems
remoteproc: qcom: pil_info: avoid 64-bit division
Pull xen fix from Juergen Gross:
"A single fix of a 5.12 patch for the rather uncommon problem of
running as a Xen guest with a real time kernel config"
* tag 'for-linus-5.12b-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/evtchn: Change irq_info lock to raw_spinlock_t
Pull ACPI fix from Rafael Wysocki:
"Fix a build issue introduced by a previous fix in the ACPI processor
driver (Vitaly Kuznetsov)"
* tag 'acpi-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: processor: Fix build when CONFIG_ACPI_PROCESSOR=m
When we suspend the VM, the VDPA interface will be reset. When the VM is
resumed again, clear_virtqueues() will clear the available and used
indices resulting in hardware virqtqueue objects becoming out of sync.
We can avoid this function alltogether since qemu will clear them if
required, e.g. when the VM went through a reboot.
Moreover, since the hw available and used indices should always be
identical on query and should be restored to the same value same value
for virtqueues that complete in order, we set the single value provided
by set_vq_state(). In get_vq_state() we return the value of hardware
used index.
Fixes: b35ccebe3e ("vdpa/mlx5: Restore the hardware used index after change map")
Fixes: 1a86b377aa ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20210408091047.4269-6-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
When feature VIRTIO_NET_F_MTU is negotiated on mlx5_vdpa,
22 extra bytes worth of MTU length is shown in guest.
This is because the mlx5_query_port_max_mtu API returns
the "hardware" MTU value, which does not just contain the
Ethernet payload, but includes extra lengths starting
from the Ethernet header up to the FCS altogether.
Fix the MTU so packets won't get dropped silently.
Fixes: 1a86b377aa ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20210408091047.4269-2-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/usb/core/hub.c: usb_new_device() contains the following:
/* By default, forbid autosuspend for all devices. It will be
* allowed for hubs during binding.
*/
usb_disable_autosuspend(udev);
So for anything which is not a hub, such as btusb devices, autosuspend is
disabled by default and we must call usb_enable_autosuspend(udev) to
enable it.
This means that the "Fix the autosuspend enable and disable" commit,
which drops the usb_enable_autosuspend() call when the enable_autosuspend
module option is true, is completely wrong, revert it.
This reverts commit 7bd9fb058d.
Cc: Hui Wang <hui.wang@canonical.com>
Fixes: 7bd9fb058d ("Bluetooth: btusb: Fix the autosuspend enable and disable")
Acked-by: Hui Wang <hui.wang@canonical.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull cifs fixes from Steve French:
"Three cifs/smb3 fixes, two for stable: a reconnect fix and a fix for
display of devnames with special characters"
* tag '5.12-rc6-smb3' of git://git.samba.org/sfrench/cifs-2.6:
cifs: escape spaces in share names
fs: cifs: Remove unnecessary struct declaration
cifs: On cifs_reconnect, resolve the hostname again.
nlh is being checked for validtity two times when it is dereferenced in
this function. Check for validity again when updating the flags through
nlh pointer to make the dereferencing safe.
CC: <stable@vger.kernel.org>
Addresses-Coverity: ("NULL pointer dereference")
Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Blumenstingl says:
====================
lantiq: GSWIP: two more fixes
after my last patch got accepted and is now in net as commit
3e6fdeb28f ("net: dsa: lantiq_gswip: Let GSWIP automatically set
the xMII clock") [0] some more people from the OpenWrt community
(many thanks to everyone involved) helped test the GSWIP driver: [1]
It turns out that the previous fix does not work for all boards.
There's no regression, but it doesn't fix as many problems as I
thought. This is why two more fixes are needed:
- the first one solves many (four known but probably there are
a few extra hidden ones) reported bugs with the GSWIP where no
traffic would flow. Not all circumstances are fully understood
but testing shows that switching away from PHY auto polling
solves all of them
- while investigating the different problems which are addressed
by the first patch some small issues with the existing code were
found. These are addressed by the second patch
Changes since v1 at [0]:
- Don't configure the link parameters in gswip_phylink_mac_config
(as we're using the "modern" way in gswip_phylink_mac_link_up).
Thanks to Andrew for the hint with the phylink documentation.
- Clarify that GSWIP_MII_CFG_RMII_CLK is ignored by the hardware in
the description of the second patch as suggested by Hauke
- Don't set GSWIP_MII_CFG_RGMII_IBS in the second patch as we don't
have any hardware available for testing this. The patch
description now also reflects this.
- Added Andrew's Reviewed-by to the first patch (thank you!)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
There are a few more bits in the GSWIP_MII_CFG register for which we
did rely on the boot-loader (or the hardware defaults) to set them up
properly.
For some external RMII PHYs we need to select the GSWIP_MII_CFG_RMII_CLK
bit and also we should un-set it for non-RMII PHYs. The
GSWIP_MII_CFG_RMII_CLK bit is ignored for other PHY connection modes.
The GSWIP IP also supports in-band auto-negotiation for RGMII PHYs when
the GSWIP_MII_CFG_RGMII_IBS bit is set. Clear this bit always as there's
no known hardware which uses this (so it is not tested yet).
Clear the xMII isolation bit when set at initialization time if it was
previously set by the bootloader. Not doing so could lead to no traffic
(neither RX nor TX) on a port with this bit set.
While here, also add the GSWIP_MII_CFG_RESET bit. We don't need to
manage it because this bit is self-clearning when set. We still add it
here to get a better overview of the GSWIP_MII_CFG register.
Fixes: 14fceff477 ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Cc: stable@vger.kernel.org
Suggested-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
PHY auto polling on the GSWIP hardware can be used so link changes
(speed, link up/down, etc.) can be detected automatically. Internally
GSWIP reads the PHY's registers for this functionality. Based on this
automatic detection GSWIP can also automatically re-configure it's port
settings. Unfortunately this auto polling (and configuration) mechanism
seems to cause various issues observed by different people on different
devices:
- FritzBox 7360v2: the two Gbit/s ports (connected to the two internal
PHY11G instances) are working fine but the two Fast Ethernet ports
(using an AR8030 RMII PHY) are completely dead (neither RX nor TX are
received). It turns out that the AR8030 PHY sets the BMSR_ESTATEN bit
as well as the ESTATUS_1000_TFULL and ESTATUS_1000_XFULL bits. This
makes the PHY auto polling state machine (rightfully?) think that the
established link speed (when the other side is Gbit/s capable) is
1Gbit/s.
- None of the Ethernet ports on the Zyxel P-2812HNU-F1 (two are
connected to the internal PHY11G GPHYs while the other three are
external RGMII PHYs) are working. Neither RX nor TX traffic was
observed. It is not clear which part of the PHY auto polling state-
machine caused this.
- FritzBox 7412 (only one LAN port which is connected to one of the
internal GPHYs running in PHY22F / Fast Ethernet mode) was seeing
random disconnects (link down events could be seen). Sometimes all
traffic would stop after such disconnect. It is not clear which part
of the PHY auto polling state-machine cauased this.
- TP-Link TD-W9980 (two ports are connected to the internal GPHYs
running in PHY11G / Gbit/s mode, the other two are external RGMII
PHYs) was affected by similar issues as the FritzBox 7412 just without
the "link down" events
Switch to software based configuration instead of PHY auto polling (and
letting the GSWIP hardware configure the ports automatically) for the
following link parameters:
- link up/down
- link speed
- full/half duplex
- flow control (RX / TX pause)
After a big round of manual testing by various people (who helped test
this on OpenWrt) it turns out that this fixes all reported issues.
Additionally it can be considered more future proof because any
"quirk" which is implemented for a PHY on the driver side can now be
used with the GSWIP hardware as well because Linux is in control of the
link parameters.
As a nice side-effect this also solves a problem where fixed-links were
not supported previously because we were relying on the PHY auto polling
mechanism, which cannot work for fixed-links as there's no PHY from
where it can read the registers. Configuring the link settings on the
GSWIP ports means that we now use the settings from device-tree also for
ports with fixed-links.
Fixes: 14fceff477 ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Fixes: 3e6fdeb28f ("net: dsa: lantiq_gswip: Let GSWIP automatically set the xMII clock")
Cc: stable@vger.kernel.org
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull rdma fixes from Jason Gunthorpe:
"Nothing very exciting here, just a few small bug fixes. No red flags
for this release have shown up.
- Regression from the last pull request in cxgb4 related to the ipv6
fixes
- KASAN crasher in rtrs
- oops in hfi1 related to a buggy BIOS
- Userspace could oops qedr's XRC support
- Uninitialized memory when parsing a LS_NLA_TYPE_DGID netlink
message"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/addr: Be strict with gid size
RDMA/qedr: Fix kernel panic when trying to access recv_cq
IB/hfi1: Fix probe time panic when AIP is enabled with a buggy BIOS
RDMA/cxgb4: check for ipv6 address properly while destroying listener
RDMA/rtrs-clt: Close rtrs client conn before destroying rtrs clt session files
