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I stumbled over an old OSA model that claims to support DIAG_ASSIST,
but then rejects the cmd to query its DIAG capabilities.
In the old code this was ok, as the returned raw error code was > 0.
Now that we translate the raw codes to errnos, the "rc < 0" causes us
to fail the initialization of the device.
The fix is trivial: don't bail out when the DIAG query fails. Such an
error is not critical, we can still use the device (with a slightly
reduced set of features).
Fixes: 742d4d40831d ("s390/qeth: convert remaining legacy cmd callbacks")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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During vnicc_init wanted_char should be compared to cur_char and not
to QETH_VNICC_DEFAULT. Without this patch there is no way to enforce
the default values as desired values.
Note, that it is expected, that a card comes online with default values.
This patch was tested with private card firmware.
Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Symptom: After vnicc/rx_bcast has been manually set to 0,
bridge_* sysfs parameters can still be set or written.
Only occurs on HiperSockets, as OSA doesn't support changing rx_bcast.
Vnic characteristics and bridgeport settings are mutually exclusive.
rx_bcast defaults to 1, so manually setting it to 0 should disable
bridge_* parameters.
Instead it makes sense here to check the supported mask. If the card
does not support vnicc at all, bridge commands are always allowed.
Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Symptom: Error message "Configuring the VNIC characteristics failed"
in dmesg whenever an OSA interface on z15 is set online.
The VNIC characteristics get re-programmed when setting a L2 device
online. This follows the selected 'wanted' characteristics - with the
exception that the INVISIBLE characteristic unconditionally gets
switched off.
For devices that don't support INVISIBLE (ie. OSA), the resulting
IO failure raises a noisy error message
("Configuring the VNIC characteristics failed").
For IQD, INVISIBLE is off by default anyways.
So don't unnecessarily special-case the INVISIBLE characteristic, and
thereby suppress the misleading error message on OSA devices.
Fixes: caa1f0b10d18 ("s390/qeth: add VNICC enable/disable support")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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qeth_l3_dev_hsuid_store() initially checks the card state, but doesn't
take the conf_mutex to ensure that the card stays in this state while
being reconfigured.
Rework the code to take this lock, and drop a redundant state check in a
helper function.
Fixes: b333293058aa ("qeth: add support for af_iucv HiperSockets transport")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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qeth_l?_set_online() goes through a number of initialization steps, and
on any error uses qeth_l?_stop_card() to tear down the residual state.
The first initialization step is qeth_core_hardsetup_card(). When this
fails after having established a QDIO context on the device
(ie. somewhere after qeth_mpc_initialize()), qeth_l?_stop_card() doesn't
shut down this QDIO context again (since the card state hasn't
progressed from DOWN at this stage).
Even worse, we then call qdio_free() as final teardown step to free the
QDIO data structures - while some of them are still hooked into wider
QDIO infrastructure such as the IRQ list. This is inevitably followed by
use-after-frees and other nastyness.
Fix this by unconditionally calling qeth_qdio_clear_card() to shut down
the QDIO context, and also to halt/clear any pending activity on the
various IO channels.
Remove the naive attempt at handling the teardown in
qeth_mpc_initialize(), it clearly doesn't suffice and we're handling it
properly now in the wider teardown code.
Fixes: 4a71df50047f ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When do IPv6 tunnel PMTU update and calls __ip6_rt_update_pmtu() in the end,
we should not call dst_confirm_neigh() as there is no two-way communication.
Although GTP only support ipv4 right now, and __ip_rt_update_pmtu() does not
call dst_confirm_neigh(), we still set it to false to keep consistency with
IPv6 code.
v5: No change.
v4: No change.
v3: Do not remove dst_confirm_neigh, but add a new bool parameter in
dst_ops.update_pmtu to control whether we should do neighbor confirm.
Also split the big patch to small ones for each area.
v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The MTU update code is supposed to be invoked in response to real
networking events that update the PMTU. In IPv6 PMTU update function
__ip6_rt_update_pmtu() we called dst_confirm_neigh() to update neighbor
confirmed time.
But for tunnel code, it will call pmtu before xmit, like:
- tnl_update_pmtu()
- skb_dst_update_pmtu()
- ip6_rt_update_pmtu()
- __ip6_rt_update_pmtu()
- dst_confirm_neigh()
If the tunnel remote dst mac address changed and we still do the neigh
confirm, we will not be able to update neigh cache and ping6 remote
will failed.
So for this ip_tunnel_xmit() case, _EVEN_ if the MTU is changed, we
should not be invoking dst_confirm_neigh() as we have no evidence
of successful two-way communication at this point.
On the other hand it is also important to keep the neigh reachability fresh
for TCP flows, so we cannot remove this dst_confirm_neigh() call.
To fix the issue, we have to add a new bool parameter for dst_ops.update_pmtu
to choose whether we should do neigh update or not. I will add the parameter
in this patch and set all the callers to true to comply with the previous
way, and fix the tunnel code one by one on later patches.
v5: No change.
v4: No change.
v3: Do not remove dst_confirm_neigh, but add a new bool parameter in
dst_ops.update_pmtu to control whether we should do neighbor confirm.
Also split the big patch to small ones for each area.
v2: Remove dst_confirm_neigh in __ip6_rt_update_pmtu.
Suggested-by: David Miller <davem@davemloft.net>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The IP fragment is specified through user-defined field as the first
bit of the first user-defined word. We were previously trying to extract
it from the user-defined mask which could not possibly work. The ip_frag
is also supposed to be a boolean, if we do not cast it as such, we risk
overwriting the next fields in CFP_DATA(6) which would render the rule
inoperative.
Fixes: 7318166cacad ("net: dsa: bcm_sf2: Add support for ethtool::rxnfc")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull block fixes from Jens Axboe:
"Let's try this one again, this time without the compat_ioctl changes.
We've got those fixed up, but that can go out next week.
This contains:
- block queue flush lockdep annotation (Bart)
- Type fix for bsg_queue_rq() (Bart)
- Three dasd fixes (Stefan, Jan)
- nbd deadlock fix (Mike)
- Error handling bio user map fix (Yang)
- iocost fix (Tejun)
- sbitmap waitqueue addition fix that affects the kyber IO scheduler
(David)"
* tag 'block-5.5-20191221' of git://git.kernel.dk/linux-block:
sbitmap: only queue kyber's wait callback if not already active
block: fix memleak when __blk_rq_map_user_iov() is failed
s390/dasd: fix typo in copyright statement
s390/dasd: fix memleak in path handling error case
s390/dasd/cio: Interpret ccw_device_get_mdc return value correctly
block: Fix a lockdep complaint triggered by request queue flushing
block: Fix the type of 'sts' in bsg_queue_rq()
block: end bio with BLK_STS_AGAIN in case of non-mq devs and REQ_NOWAIT
nbd: fix shutdown and recv work deadlock v2
iocost: over-budget forced IOs should schedule async delay
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Pull RISC-V fixes from Paul Walmsley:
"Several fixes, and one cleanup, for RISC-V.
Fixes:
- Fix an error in a Kconfig file that resulted in an undefined
Kconfig option "CONFIG_CONFIG_MMU"
- Fix undefined Kconfig option "CONFIG_CONFIG_MMU"
- Fix scratch register clearing in M-mode (affects nommu users)
- Fix a mismerge on my part that broke the build for
CONFIG_SPARSEMEM_VMEMMAP users
Cleanup:
- Move SiFive L2 cache-related code to drivers/soc, per request"
* tag 'riscv/for-v5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: move sifive_l2_cache.c to drivers/soc
riscv: define vmemmap before pfn_to_page calls
riscv: fix scratch register clearing in M-mode.
riscv: Fix use of undefined config option CONFIG_CONFIG_MMU
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Pull networking fixes from David Miller:
1) Several nf_flow_table_offload fixes from Pablo Neira Ayuso,
including adding a missing ipv6 match description.
2) Several heap overflow fixes in mwifiex from qize wang and Ganapathi
Bhat.
3) Fix uninit value in bond_neigh_init(), from Eric Dumazet.
4) Fix non-ACPI probing of nxp-nci, from Stephan Gerhold.
5) Fix use after free in tipc_disc_rcv(), from Tuong Lien.
6) Enforce limit of 33 tail calls in mips and riscv JIT, from Paul
Chaignon.
7) Multicast MAC limit test is off by one in qede, from Manish Chopra.
8) Fix established socket lookup race when socket goes from
TCP_ESTABLISHED to TCP_LISTEN, because there lacks an intervening
RCU grace period. From Eric Dumazet.
9) Don't send empty SKBs from tcp_write_xmit(), also from Eric Dumazet.
10) Fix active backup transition after link failure in bonding, from
Mahesh Bandewar.
11) Avoid zero sized hash table in gtp driver, from Taehee Yoo.
12) Fix wrong interface passed to ->mac_link_up(), from Russell King.
13) Fix DSA egress flooding settings in b53, from Florian Fainelli.
14) Memory leak in gmac_setup_txqs(), from Navid Emamdoost.
15) Fix double free in dpaa2-ptp code, from Ioana Ciornei.
16) Reject invalid MTU values in stmmac, from Jose Abreu.
17) Fix refcount leak in error path of u32 classifier, from Davide
Caratti.
18) Fix regression causing iwlwifi firmware crashes on boot, from Anders
Kaseorg.
19) Fix inverted return value logic in llc2 code, from Chan Shu Tak.
20) Disable hardware GRO when XDP is attached to qede, frm Manish
Chopra.
21) Since we encode state in the low pointer bits, dst metrics must be
at least 4 byte aligned, which is not necessarily true on m68k. Add
annotations to fix this, from Geert Uytterhoeven.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (160 commits)
sfc: Include XDP packet headroom in buffer step size.
sfc: fix channel allocation with brute force
net: dst: Force 4-byte alignment of dst_metrics
selftests: pmtu: fix init mtu value in description
hv_netvsc: Fix unwanted rx_table reset
net: phy: ensure that phy IDs are correctly typed
mod_devicetable: fix PHY module format
qede: Disable hardware gro when xdp prog is installed
net: ena: fix issues in setting interrupt moderation params in ethtool
net: ena: fix default tx interrupt moderation interval
net/smc: unregister ib devices in reboot_event
net: stmmac: platform: Fix MDIO init for platforms without PHY
llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c)
net: hisilicon: Fix a BUG trigered by wrong bytes_compl
net: dsa: ksz: use common define for tag len
s390/qeth: don't return -ENOTSUPP to userspace
s390/qeth: fix promiscuous mode after reset
s390/qeth: handle error due to unsupported transport mode
cxgb4: fix refcount init for TC-MQPRIO offload
tc-testing: initial tdc selftests for cls_u32
...
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Pull xen fixes from Juergen Gross:
"This contains two cleanup patches and a small series for supporting
reloading the Xen block backend driver"
* tag 'for-linus-5.5b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/grant-table: remove multiple BUG_ON on gnttab_interface
xen-blkback: support dynamic unbind/bind
xen/interface: re-define FRONT/BACK_RING_ATTACH()
xenbus: limit when state is forced to closed
xenbus: move xenbus_dev_shutdown() into frontend code...
xen/blkfront: Adjust indentation in xlvbd_alloc_gendisk
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Pull powerpc fixes from Michael Ellerman:
"Two weeks worth of accumulated fixes:
- A fix for a performance regression seen on PowerVM LPARs using
dedicated CPUs, caused by our vcpu_is_preempted() returning true
even for idle CPUs.
- One of the ultravisor support patches broke KVM on big endian hosts
in v5.4.
- Our KUAP (Kernel User Access Prevention) code missed allowing
access in __clear_user(), which could lead to an oops or erroneous
SEGV when triggered via PTRACE_GETREGSET.
- Two fixes for the ocxl driver, an open/remove race, and a memory
leak in an error path.
- A handful of other small fixes.
Thanks to: Andrew Donnellan, Christian Zigotzky, Christophe Leroy,
Christoph Hellwig, Daniel Axtens, David Hildenbrand, Frederic Barrat,
Gautham R. Shenoy, Greg Kurz, Ihor Pasichnyk, Juri Lelli, Marcus
Comstedt, Mike Rapoport, Parth Shah, Srikar Dronamraju, Vaidyanathan
Srinivasan"
* tag 'powerpc-5.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
KVM: PPC: Book3S HV: Fix regression on big endian hosts
powerpc: Fix __clear_user() with KUAP enabled
powerpc/pseries/cmm: fix managed page counts when migrating pages between zones
powerpc/8xx: fix bogus __init on mmu_mapin_ram_chunk()
ocxl: Fix potential memory leak on context creation
powerpc/irq: fix stack overflow verification
powerpc: Ensure that swiotlb buffer is allocated from low memory
powerpc/shared: Use static key to detect shared processor
powerpc/vcpu: Assume dedicated processors as non-preempt
ocxl: Fix concurrent AFU open and device removal
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Pull clk fixes from Stephen Boyd:
"One core framework fix to walk the orphan list and match up clks to
parents when clk providers register the DT provider after registering
all their clks (as they should).
Then a handful of driver fixes for the qcom, imx, and at91 drivers.
The driver fixes are relatively small fixes for incorrect register
settings or missing locks causing race conditions"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: qcom: Avoid SMMU/cx gdsc corner cases
clk: qcom: gcc-sc7180: Fix setting flag for votable GDSCs
clk: Move clk_core_reparent_orphans() under CONFIG_OF
clk: at91: fix possible deadlock
clk: walk orphan list on clock provider registration
clk: imx: pll14xx: fix clk_pll14xx_wait_lock
clk: imx: clk-imx7ulp: Add missing sentinel of ulp_div_table
clk: imx: clk-composite-8m: add lock to gate/mux
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Correct a mismatch between rx_page_buf_step and the actual step size
used when filling buffer pages.
This patch fixes the page overrun that occured when the MTU was set to
anything bigger than 1692.
Fixes: 3990a8fffbda ("sfc: allocate channels for XDP tx queues")
Signed-off-by: Charles McLachlan <cmclachlan@solarflare.com>
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It was possible for channel allocation logic to get confused between what
it had and what it wanted, and end up trying to use the same channel for
both PTP and regular TX. This led to a kernel panic:
BUG: unable to handle page fault for address: 0000000000047635
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0
Oops: 0002 [#1] SMP PTI
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.4.0-rc3-ehc14+ #900
Hardware name: Dell Inc. PowerEdge R710/0M233H, BIOS 6.4.0 07/23/2013
RIP: 0010:native_queued_spin_lock_slowpath+0x188/0x1e0
Code: f3 90 48 8b 32 48 85 f6 74 f6 eb e8 c1 ee 12 83 e0 03 83 ee 01 48 c1 e0 05 48 63 f6 48 05 c0 98 02 00 48 03 04 f5 a0 c6 ed 81 <48> 89 10 8b 42 08 85 c0 75 09 f3 90 8b 42 08 85 c0 74 f7 48 8b 32
RSP: 0018:ffffc90000003d28 EFLAGS: 00010006
RAX: 0000000000047635 RBX: 0000000000000246 RCX: 0000000000040000
RDX: ffff888627a298c0 RSI: 0000000000003ffe RDI: ffff88861f6b8dd4
RBP: ffff8886225c6e00 R08: 0000000000040000 R09: 0000000000000000
R10: 0000000616f080c6 R11: 00000000000000c0 R12: ffff88861f6b8dd4
R13: ffffc90000003dc8 R14: ffff88861942bf00 R15: ffff8886150f2000
FS: 0000000000000000(0000) GS:ffff888627a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000047635 CR3: 000000000200a000 CR4: 00000000000006f0
Call Trace:
<IRQ>
_raw_spin_lock_irqsave+0x22/0x30
skb_queue_tail+0x1b/0x50
sock_queue_err_skb+0x9d/0xf0
__skb_complete_tx_timestamp+0x9d/0xc0
efx_dequeue_buffer+0x126/0x180 [sfc]
efx_xmit_done+0x73/0x1c0 [sfc]
efx_ef10_ev_process+0x56a/0xfe0 [sfc]
? tick_sched_do_timer+0x60/0x60
? timerqueue_add+0x5d/0x70
? enqueue_hrtimer+0x39/0x90
efx_poll+0x111/0x380 [sfc]
? rcu_accelerate_cbs+0x50/0x160
net_rx_action+0x14a/0x400
__do_softirq+0xdd/0x2d0
irq_exit+0xa0/0xb0
do_IRQ+0x53/0xe0
common_interrupt+0xf/0xf
</IRQ>
In the long run we intend to rewrite the channel allocation code, but for
'net' fix this by allocating extra_channels, and giving them TX queues,
even if we do not in fact need them (e.g. on NICs without MAC TX
timestamping), and thereby using simpler logic to assign the channels
once they're allocated.
Fixes: 3990a8fffbda ("sfc: allocate channels for XDP tx queues")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In existing code, the receive indirection table, rx_table, is in
struct rndis_device, which will be reset when changing MTU, ringparam,
etc. User configured receive indirection table values will be lost.
To fix this, move rx_table to struct net_device_context, and check
netif_is_rxfh_configured(), so rx_table will be set to default only
if no user configured value.
Fixes: ff4a44199012 ("netvsc: allow get/set of RSS indirection table")
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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PHY IDs are 32-bit unsigned quantities. Ensure that they are always
treated as such, and not passed around as "int"s.
Fixes: 13d0ab6750b2 ("net: phy: check return code when requesting PHY driver module")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit 18c602dee472 ("qede: Use NETIF_F_GRO_HW.") introduced
a regression in driver that when xdp program is installed on
qede device, device's aggregation feature (hardware GRO) is not
getting disabled, which is unexpected with xdp.
Fixes: 18c602dee472 ("qede: Use NETIF_F_GRO_HW.")
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Issue 1:
--------
Reproduction steps:
1. sudo ethtool -C eth0 rx-usecs 128
2. sudo ethtool -C eth0 adaptive-rx on
3. sudo ethtool -C eth0 adaptive-rx off
4. ethtool -c eth0
expected output: rx-usecs 128
actual output: rx-usecs 0
Reason for issue:
In stage 3, ethtool userspace calls first the ena_get_coalesce() handler
to get the current value of all properties, and then the ena_set_coalesce()
handler. When ena_get_coalesce() is called the adaptive interrupt
moderation is still on. There is an if in the code that returns the
rx_coalesce_usecs only if the adaptive interrupt moderation is off.
And since it is still on, rx_coalesce_usecs is not set, meaning it
stays 0.
Solution to issue:
Remove this if static interrupt moderation intervals have nothing to do
with dynamic ones.
Issue 2:
--------
Reproduction steps:
1. sudo ethtool -C eth0 adaptive-rx on
2. sudo ethtool -C eth0 rx-usecs 128
3. ethtool -c eth0
expected output: rx-usecs 128
actual output: rx-usecs 0
Reason for issue:
In stage 2, when ena_set_coalesce() is called, the handler tests if
rx adaptive interrupt moderation is on, and if it is, it returns before
getting to the part in the function that sets the rx non-adaptive
interrupt moderation interval.
Solution to issue:
Remove the return from the function when rx adaptive interrupt moderation
is on.
Also cleaned up the fixed code in ena_set_coalesce by grouping together
adaptive interrupt moderation toggling, and using && instead of nested
ifs.
Fixes: b3db86dc4b82 ("net: ena: reimplement set/get_coalesce()")
Fixes: 0eda847953d8 ("net: ena: fix retrieval of nonadaptive interrupt moderation intervals")
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Current default non-adaptive tx interrupt moderation interval is 196 us.
This value is too high and might cause the tx queue to fill up.
In this commit we set the default non-adaptive tx interrupt moderation
interval to 64 us in order to:
1. Reduce the probability of the queue filling-up (when compared to the
current default value of 196 us).
2. Reduce unnecessary tx interrupt overhead (which happens if we set the
default tx interval to 0).
We determined experimentally that 64 us is an optimal value that
reduces interrupt rate by more than 20% without affecting performance.
Fixes: 1738cd3ed342 ("net: ena: Add a driver for Amazon Elastic Network Adapters (ENA)")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current implementation of "stmmac_dt_phy" function initializes
the MDIO platform bus data, even in the absence of PHY. This fix
will skip MDIO initialization if there is no PHY present.
Fixes: 7437127 ("net: stmmac: Convert to phylink and remove phylib logic")
Acked-by: Jayati Sahu <jayati.sahu@samsung.com>
Signed-off-by: Sriram Dash <sriram.dash@samsung.com>
Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When doing stress test, we get the following trace:
kernel BUG at lib/dynamic_queue_limits.c:26!
Internal error: Oops - BUG: 0 [#1] SMP ARM
Modules linked in: hip04_eth
CPU: 0 PID: 2003 Comm: tDblStackPcap0 Tainted: G O L 4.4.197 #1
Hardware name: Hisilicon A15
task: c3637668 task.stack: de3bc000
PC is at dql_completed+0x18/0x154
LR is at hip04_tx_reclaim+0x110/0x174 [hip04_eth]
pc : [<c041abfc>] lr : [<bf0003a8>] psr: 800f0313
sp : de3bdc2c ip : 00000000 fp : c020fb10
r10: 00000000 r9 : c39b4224 r8 : 00000001
r7 : 00000046 r6 : c39b4000 r5 : 0078f392 r4 : 0078f392
r3 : 00000047 r2 : 00000000 r1 : 00000046 r0 : df5d5c80
Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 32c5387d Table: 1e189b80 DAC: 55555555
Process tDblStackPcap0 (pid: 2003, stack limit = 0xde3bc190)
Stack: (0xde3bdc2c to 0xde3be000)
[<c041abfc>] (dql_completed) from [<bf0003a8>] (hip04_tx_reclaim+0x110/0x174 [hip04_eth])
[<bf0003a8>] (hip04_tx_reclaim [hip04_eth]) from [<bf0012c0>] (hip04_rx_poll+0x20/0x388 [hip04_eth])
[<bf0012c0>] (hip04_rx_poll [hip04_eth]) from [<c04c8d9c>] (net_rx_action+0x120/0x374)
[<c04c8d9c>] (net_rx_action) from [<c021eaf4>] (__do_softirq+0x218/0x318)
[<c021eaf4>] (__do_softirq) from [<c021eea0>] (irq_exit+0x88/0xac)
[<c021eea0>] (irq_exit) from [<c0240130>] (msa_irq_exit+0x11c/0x1d4)
[<c0240130>] (msa_irq_exit) from [<c0267ba8>] (__handle_domain_irq+0x110/0x148)
[<c0267ba8>] (__handle_domain_irq) from [<c0201588>] (gic_handle_irq+0xd4/0x118)
[<c0201588>] (gic_handle_irq) from [<c0558360>] (__irq_svc+0x40/0x58)
Exception stack(0xde3bdde0 to 0xde3bde28)
dde0: 00000000 00008001 c3637668 00000000 00000000 a00f0213 dd3627a0 c0af6380
de00: c086d380 a00f0213 c0a22a50 de3bde6c 00000002 de3bde30 c0558138 c055813c
de20: 600f0213 ffffffff
[<c0558360>] (__irq_svc) from [<c055813c>] (_raw_spin_unlock_irqrestore+0x44/0x54)
Kernel panic - not syncing: Fatal exception in interrupt
Pre-modification code:
int hip04_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
{
[...]
[1] priv->tx_head = TX_NEXT(tx_head);
[2] count++;
[3] netdev_sent_queue(ndev, skb->len);
[...]
}
An rx interrupt occurs if hip04_mac_start_xmit just executes to the line 2,
tx_head has been updated, but corresponding 'skb->len' has not been
added to dql_queue.
And then
hip04_mac_interrupt->__napi_schedule->hip04_rx_poll->hip04_tx_reclaim
In hip04_tx_reclaim, because tx_head has been updated,
bytes_compl will plus an additional "skb-> len"
which has not been added to dql_queue. And then
trigger the BUG_ON(bytes_compl > num_queued - dql->num_completed).
To solve the problem described above, we put
"netdev_sent_queue(ndev, skb->len);"
before
"priv->tx_head = TX_NEXT(tx_head);"
Fixes: a41ea46a9a12 ("net: hisilicon: new hip04 ethernet driver")
Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
ENOTSUPP is not uapi, use EOPNOTSUPP instead.
Fixes: d66cb37e9664 ("qeth: Add new priority queueing options")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
When managing the promiscuous mode during an RX modeset, qeth caches the
current HW state to avoid repeated programming of the same state on each
modeset.
But while tearing down a device, we forget to clear the cached state. So
when the device is later set online again, the initial RX modeset
doesn't program the promiscuous mode since we believe it is already
enabled.
Fix this by clearing the cached state in the tear-down path.
Note that for the SBP variant of promiscuous mode, this accidentally
works right now because we unconditionally restore the SBP role while
re-initializing.
Fixes: 4a71df50047f ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Along with z/VM NICs, there's additional device types that only support
a specific transport mode (eg. external-bridged IQD).
Identify the corresponding error code, and raise a fitting error message
so that the user knows to adjust their device configuration.
On top of that also fix the subsequent error path, so that the rejected
cmd doesn't need to wait for a timeout but gets cancelled straight away.
Fixes: 4a71df50047f ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Properly initialize refcount to 1 when hardware queue arrays for
TC-MQPRIO offload have been freshly allocated. Otherwise, following
warning is observed. Also fix up error path to only free hardware
queue arrays when refcount reaches 0.
[ 130.075342] ------------[ cut here ]------------
[ 130.075343] refcount_t: addition on 0; use-after-free.
[ 130.075355] WARNING: CPU: 0 PID: 10870 at lib/refcount.c:25
refcount_warn_saturate+0xe1/0x100
[ 130.075356] Modules linked in: sch_mqprio iptable_nat ib_iser
libiscsi scsi_transport_iscsi ib_ipoib rdma_ucm ib_umad iw_cxgb4 libcxgb
ib_uverbs x86_pkg_temp_thermal cxgb4 igb
[ 130.075361] CPU: 0 PID: 10870 Comm: tc Kdump: loaded Not tainted
5.5.0-rc1+ #11
[ 130.075362] Hardware name: Supermicro
X9SRE/X9SRE-3F/X9SRi/X9SRi-3F/X9SRE/X9SRE-3F/X9SRi/X9SRi-3F, BIOS 3.2
01/16/2015
[ 130.075363] RIP: 0010:refcount_warn_saturate+0xe1/0x100
[ 130.075364] Code: e8 14 41 c1 ff 0f 0b c3 80 3d 44 f4 10 01 00 0f 85
63 ff ff ff 48 c7 c7 38 9f 83 8c 31 c0 c6 05 2e f4 10 01 01 e8 ef 40 c1
ff <0f> 0b c3 48 c7 c7 10 9f 83 8c 31 c0 c6 05 17 f4 10 01 01 e8 d7 40
[ 130.075365] RSP: 0018:ffffa48d00c0b768 EFLAGS: 00010286
[ 130.075366] RAX: 0000000000000000 RBX: 0000000000000008 RCX:
0000000000000001
[ 130.075366] RDX: 0000000000000001 RSI: 0000000000000096 RDI:
ffff8a2e9fa187d0
[ 130.075367] RBP: ffff8a2e93890000 R08: 0000000000000398 R09:
000000000000003c
[ 130.075367] R10: 00000000000142a0 R11: 0000000000000397 R12:
ffffa48d00c0b848
[ 130.075368] R13: ffff8a2e94746498 R14: ffff8a2e966f7000 R15:
0000000000000031
[ 130.075368] FS: 00007f689015f840(0000) GS:ffff8a2e9fa00000(0000)
knlGS:0000000000000000
[ 130.075369] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 130.075369] CR2: 00000000006762a0 CR3: 00000007cf164005 CR4:
00000000001606f0
[ 130.075370] Call Trace:
[ 130.075377] cxgb4_setup_tc_mqprio+0xbee/0xc30 [cxgb4]
[ 130.075382] ? cxgb4_ethofld_restart+0x50/0x50 [cxgb4]
[ 130.075384] ? pfifo_fast_init+0x7e/0xf0
[ 130.075386] mqprio_init+0x5f4/0x630 [sch_mqprio]
[ 130.075389] qdisc_create+0x1bf/0x4a0
[ 130.075390] tc_modify_qdisc+0x1ff/0x770
[ 130.075392] rtnetlink_rcv_msg+0x28b/0x350
[ 130.075394] ? rtnl_calcit.isra.32+0x110/0x110
[ 130.075395] netlink_rcv_skb+0xc6/0x100
[ 130.075396] netlink_unicast+0x1db/0x330
[ 130.075397] netlink_sendmsg+0x2f5/0x460
[ 130.075399] ? _copy_from_user+0x2e/0x60
[ 130.075400] sock_sendmsg+0x59/0x70
[ 130.075401] ____sys_sendmsg+0x1f0/0x230
[ 130.075402] ? copy_msghdr_from_user+0xd7/0x140
[ 130.075403] ___sys_sendmsg+0x77/0xb0
[ 130.075404] ? ___sys_recvmsg+0x84/0xb0
[ 130.075406] ? __handle_mm_fault+0x377/0xaf0
[ 130.075407] __sys_sendmsg+0x53/0xa0
[ 130.075409] do_syscall_64+0x44/0x130
[ 130.075412] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 130.075413] RIP: 0033:0x7f688f13af10
[ 130.075414] Code: c3 48 8b 05 82 6f 2c 00 f7 db 64 89 18 48 83 cb ff
eb dd 0f 1f 80 00 00 00 00 83 3d 8d d0 2c 00 00 75 10 b8 2e 00 00 00 0f
05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae cc 00 00 48 89 04 24
[ 130.075414] RSP: 002b:00007ffe6c7d9988 EFLAGS: 00000246 ORIG_RAX:
000000000000002e
[ 130.075415] RAX: ffffffffffffffda RBX: 00000000006703a0 RCX:
00007f688f13af10
[ 130.075415] RDX: 0000000000000000 RSI: 00007ffe6c7d99f0 RDI:
0000000000000003
[ 130.075416] RBP: 000000005df38312 R08: 0000000000000002 R09:
0000000000008000
[ 130.075416] R10: 00007ffe6c7d93e0 R11: 0000000000000246 R12:
0000000000000000
[ 130.075417] R13: 00007ffe6c7e9c50 R14: 0000000000000001 R15:
000000000067c600
[ 130.075418] ---[ end trace 8fbb3bf36a8671db ]---
v2:
- Move the refcount_set() closer to where the hardware queue arrays
are being allocated.
- Fix up error path to only free hardware queue arrays when refcount
reaches 0.
Fixes: 2d0cb84dd973 ("cxgb4: add ETHOFLD hardware queue support")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Pull arm64 fixes from Catalin Marinas:
- Leftover put_cpu() in the perf/smmuv3 error path.
- Add Hisilicon TSV110 to spectre-v2 safe list
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: cpu_errata: Add Hisilicon TSV110 to spectre-v2 safe list
perf/smmuv3: Remove the leftover put_cpu() in error path
|
|
Pull drm fixes from Dave Airlie:
"Probably the last one before Christmas, I'll see if there is much
demand over next few weeks for more fixes, I expect it'll be quiet
enough.
This has one exynos fix, and a bunch of i915 core and i915 GVT fixes.
Summary:
exynos:
- component delete fix
i915:
- Fix to drop an unused and harmful display W/A
- Fix to define EHL power wells independent of ICL
- Fix for priority inversion on bonded requests
- Fix in mmio offset calculation of DSB instance
- Fix memory leak from get_task_pid when banning clients
- Fixes to avoid dereference of uninitialized ops in dma_fence
tracing and keep reference to execbuf object until submitted.
- vGPU state setting locking fix (Zhenyu)
- Fix vGPU display dmabuf as read-only (Zhenyu)
- Properly handle vGPU display dmabuf page pin when rendering (Tina)
- Fix one guest boot warning to handle guc reset state (Fred)"
* tag 'drm-fixes-2019-12-21' of git://anongit.freedesktop.org/drm/drm:
drm/exynos: gsc: add missed component_del
drm/i915: Fix pid leak with banned clients
drm/i915/gem: Keep request alive while attaching fences
drm/i915: Fix WARN_ON condition for cursor plane ddb allocation
drm/i915/gvt: Fix guest boot warning
drm/i915/tgl: Drop Wa#1178
drm/i915/ehl: Define EHL powerwells independently of ICL
drm/i915: Set fence_work.ops before dma_fence_init
drm/i915: Copy across scheduler behaviour flags across submit fences
drm/i915/dsb: Fix in mmio offset calculation of DSB instance
drm/i915/gvt: Pin vgpu dma address before using
drm/i915/gvt: set guest display buffer as readonly
drm/i915/gvt: use vgpu lock for active state setting
|
|
- Fix to drop an unused and harmful display W/A
- Fix to define EHL power wells independent of ICL
- Fix for priority inversion on bonded requests
- Fix in mmio offset calculation of DSB instance
- Fix memory leak from get_task_pid when banning clients
- Fixes to avoid dereference of uninitialized ops in dma_fence tracing
and keep reference to execbuf object until submitted.
- Includes gvt-fixes-2019-12-18
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191219124635.GA16068@jlahtine-desk.ger.corp.intel.com
|
|
coypright -> copyright
Reported-by: Kate Stewart <kstewart@linuxfoundation.org>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
If for whatever reason the dasd_eckd_check_characteristics() function
exits after at least some paths have their configuration data
allocated those data is never freed again. In the error case the
device->private pointer is set to NULL and dasd_eckd_uncheck_device()
will exit without freeing the path data because of this NULL pointer.
Fix by calling dasd_eckd_clear_conf_data() for error cases.
Also use dasd_eckd_clear_conf_data() in dasd_eckd_uncheck_device()
to avoid code duplication.
Reported-by: Qian Cai <cai@lca.pw>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
The max data count (mdc) is an unsigned 16-bit integer value as per AR
documentation and is received via ccw_device_get_mdc() for a specific
path mask from the CIO layer. The function itself also always returns a
positive mdc value or 0 in case mdc isn't supported or couldn't be
determined.
Though, the comment for this function describes a negative return value
to indicate failures.
As a result, the DASD device driver interprets the return value of
ccw_device_get_mdc() incorrectly. The error case is essentially a dead
code path.
To fix this behaviour, check explicitly for a return value of 0 and
change the comment for ccw_device_get_mdc() accordingly.
This fix merely enables the error code path in the DASD functions
get_fcx_max_data() and verify_fcx_max_data(). The actual functionality
stays the same and is still correct.
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Pull iommu fixes from Joerg Roedel:
- Fix kmemleak warning in IOVA code
- Fix compile warnings on ARM32/64 in dma-iommu code due to dma_mask
type mismatches
- Make ISA reserved regions relaxable, so that VFIO can assign devices
which have such regions defined
- Fix mapping errors resulting in IO page-faults in the VT-d driver
- Make sure direct mappings for a domain are created after the default
domain is updated
- Map ISA reserved regions in the VT-d driver with correct permissions
- Remove unneeded check for PSI capability in the IOTLB flush code of
the VT-d driver
- Lockdep fix iommu_dma_prepare_msi()
* tag 'iommu-fixes-v5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/dma: Relax locking in iommu_dma_prepare_msi()
iommu/vt-d: Remove incorrect PSI capability check
iommu/vt-d: Allocate reserved region for ISA with correct permission
iommu: set group default domain before creating direct mappings
iommu/vt-d: Fix dmar pte read access not set error
iommu/vt-d: Set ISA bridge reserved region as relaxable
iommu/dma: Rationalise types for DMA masks
iommu/iova: Init the struct iova to fix the possible memleak
|
|
Pull x86 platform driver fixes from Andy Shevchenko:
"Bucket of fixes for PDx86. Note, that there is no ABI breakage in
Mellanox driver because it has been introduced in v5.5-rc1, so we can
change it.
Summary:
- Add support of APUv4 and fix an assignment of simswap GPIO
- Add Siemens CONNECT X300 to DMI table to avoid stuck during boot
- Correct arguments of WMI call on HP Envy x360 15-cp0xxx model
- Fix the mlx-bootctl sysfs attributes to be device related"
* tag 'platform-drivers-x86-v5.5-2' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: pcengines-apuv2: Spelling fixes in the driver
platform/x86: pcengines-apuv2: detect apuv4 board
platform/x86: pcengines-apuv2: fix simswap GPIO assignment
platform/x86: pmc_atom: Add Siemens CONNECT X300 to critclk_systems DMI table
platform/x86: hp-wmi: Make buffer for HPWMI_FEATURE2_QUERY 128 bytes
platform/mellanox: fix the mlx-bootctl sysfs
|
|
Pull MMC host fixes from Ulf Hansson:
- mtk-sd: Fix tuning for MT8173 HS200/HS400 mode
- sdhci: Revert a fix for incorrect switch to HS mode
- sdhci-msm: Fixup accesses to the DDR_CONFIG register
- sdhci-of-esdhc: Revert a bad fix for erratum A-009204
- sdhci-of-esdhc: Re-implement fix for erratum A-009204
- sdhci-of-esdhc: Fixup P2020 errata handling
- sdhci-pci: Disable broken CMDQ on Intel GLK based Lenovo systems
* tag 'mmc-v5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-of-esdhc: re-implement erratum A-009204 workaround
mmc: sdhci: Add a quirk for broken command queuing
mmc: sdhci: Workaround broken command queuing on Intel GLK
mmc: sdhci-of-esdhc: fix P2020 errata handling
mmc: sdhci: Update the tuning failed messages to pr_debug level
mmc: sdhci-of-esdhc: Revert "mmc: sdhci-of-esdhc: add erratum A-009204 support"
mmc: mediatek: fix CMD_TA to 2 for MT8173 HS200/HS400 mode
mmc: sdhci-msm: Correct the offset and value for DDR_CONFIG register
Revert "mmc: sdhci: Fix incorrect switch to HS mode"
|
|
Pull char/misc driver fixes from Greg KH:
"Here are some small char and other driver fixes for 5.5-rc3.
The most noticable one is a much-reported fix for a random driver
issue that came up from 5.5-rc1 compat_ioctl cleanups. The others are
a chunk of habanalab driver fixes and intel_th driver fixes and new
device ids.
All have been in linux-next with no reported issues"
* tag 'char-misc-5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
random: don't forget compat_ioctl on urandom
intel_th: msu: Fix window switching without windows
intel_th: Fix freeing IRQs
intel_th: pci: Add Elkhart Lake SOC support
intel_th: pci: Add Comet Lake PCH-V support
habanalabs: remove variable 'val' set but not used
habanalabs: rate limit error msg on waiting for CS
|
|
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for a number of reported
issues.
The majority here are some fixes for the wfx driver, but also in here
is a comedi driver fix found during some code review, and an axis-fifo
build dependancy issue to resolve some reported testing problems.
All of these have been in linux-next with no reported issues"
* tag 'staging-5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: wfx: fix wrong error message
staging: wfx: fix hif_set_mfp() with big endian hosts
staging: wfx: detect race condition in WEP authentication
staging: wfx: ensure that retry policy always fallbacks to MCS0 / 1Mbps
staging: wfx: fix rate control handling
staging: wfx: firmware does not support more than 32 total retries
staging: wfx: use boolean appropriately
staging: wfx: fix counter overflow
staging: wfx: fix case of lack of tx_retry_policies
staging: wfx: fix the cache of rate policies on interface reset
staging: axis-fifo: add unspecified HAS_IOMEM dependency
staging: comedi: gsc_hpdi: check dma_alloc_coherent() return value
|
|
Pull tty/serial fixes from Greg KH:
"Here are some small tty and serial driver fixes for 5.5-rc3.
Only four small patches here:
- atmel serial driver fix
- msm_serial driver fix
- sprd serial driver fix
- tty core port fix
The last tty core fix should resolve a long-standing bug with a race
at port creation time that some people would see, and Sudip finally
tracked down.
All of these have been in linux-next with no reported issues"
* tag 'tty-5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty/serial: atmel: fix out of range clock divider handling
tty: link tty and port before configuring it as console
serial: sprd: Add clearing break interrupt operation
tty: serial: msm_serial: Fix lockup for sysrq and oops
|
|
Pull USB fixes from Greg KH:
"Here are some small USB fixes for some reported issues.
Included in here are:
- xhci build warning fix
- ehci disconnect warning fix
- usbip lockup fix and error cleanup fix
- typec build fix
All of these have been in linux-next with no reported issues"
* tag 'usb-5.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: xhci: Fix build warning seen with CONFIG_PM=n
usbip: Fix error path of vhci_recv_ret_submit()
usbip: Fix receive error in vhci-hcd when using scatter-gather
USB: EHCI: Do not return -EPIPE when hub is disconnected
usb: typec: fusb302: Fix an undefined reference to 'extcon_get_state'
|
|
Pull pin control fixes from Linus Walleij:
"Sorry that this fixes pull request took a while. Too much christmas
business going on.
This contains a few really important Intel fixes and some odd fixes:
- A host of fixes for the Intel baytrail and cherryview: properly
serialize all register accesses and add the irqchip with the
gpiochip as we need to, fix some pin lists and initialize the
hardware in the right order.
- Fix the Aspeed G6 LPC configuration.
- Handle a possible NULL pointer exception in the core.
- Fix the Kconfig dependencies for the Equilibrium driver"
* tag 'pinctrl-v5.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: ingenic: Fixup PIN_CONFIG_OUTPUT config
pinctrl: Modify Kconfig to fix linker error
pinctrl: pinmux: fix a possible null pointer in pinmux_can_be_used_for_gpio
pinctrl: aspeed-g6: Fix LPC/eSPI mux configuration
pinctrl: cherryview: Pass irqchip when adding gpiochip
pinctrl: cherryview: Add GPIO <-> pin mapping ranges via callback
pinctrl: cherryview: Split out irq hw-init into a separate helper function
pinctrl: baytrail: Pass irqchip when adding gpiochip
pinctrl: baytrail: Add GPIO <-> pin mapping ranges via callback
pinctrl: baytrail: Update North Community pin list
pinctrl: baytrail: Really serialize all register accesses
|
|
Mainly does:
- capitalize gpio and bios to GPIO and BIOS
- capitalize beginning of comments
- add periods in multi-line comments
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
GPIO stuff on APUv4 seems to be the same as on APUv2, so we just
need to match on DMI data.
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
The mapping entry has to hold the GPIO line index instead of
controller's register number.
Fixes: 5037d4ddda31 ("platform/x86: pcengines-apuv2: wire up simswitch gpio as led")
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
The CONNECT X300 uses the PMC clock for on-board components and gets
stuck during boot if the clock is disabled. Therefore, add this
device to the critical systems list.
Tested on CONNECT X300.
Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Signed-off-by: Michael Haener <michael.haener@siemens.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
At least on the HP Envy x360 15-cp0xxx model the WMI interface
for HPWMI_FEATURE2_QUERY requires an outsize of at least 128 bytes,
otherwise it fails with an error code 5 (HPWMI_RET_INVALID_PARAMETERS):
Dec 06 00:59:38 kernel: hp_wmi: query 0xd returned error 0x5
We do not care about the contents of the buffer, we just want to know
if the HPWMI_FEATURE2_QUERY command is supported.
This commits bumps the buffer size, fixing the error.
Fixes: 8a1513b4932 ("hp-wmi: limit hotkey enable")
Cc: stable@vger.kernel.org
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1520703
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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This is a follow-up commit for the sysfs attributes to change
from DRIVER_ATTR to DEVICE_ATTR according to some initial comments.
In such case, it's better to point the sysfs path to the device
itself instead of the driver. The ABI document is also updated.
Fixes: 79e29cb8fbc5 ("platform/mellanox: Add bootctl driver for Mellanox BlueField Soc")
Signed-off-by: Liming Sun <lsun@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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gnttab_request_version() always sets the gnttab_interface variable
and the assertions to check for empty gnttab_interface is unnecessary.
The patch eliminates multiple such assertions.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
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By simply re-attaching to shared rings during connect_ring() rather than
assuming they are freshly allocated (i.e assuming the counters are zero)
it is possible for vbd instances to be unbound and re-bound from and to
(respectively) a running guest.
This has been tested by running:
while true;
do fio --name=randwrite --ioengine=libaio --iodepth=16 \
--rw=randwrite --bs=4k --direct=1 --size=1G --verify=crc32;
done
in a PV guest whilst running:
while true;
do echo vbd-$DOMID-$VBD >unbind;
echo unbound;
sleep 5;
echo vbd-$DOMID-$VBD >bind;
echo bound;
sleep 3;
done
in dom0 from /sys/bus/xen-backend/drivers/vbd to continuously unbind and
re-bind its system disk image.
This is a highly useful feature for a backend module as it allows it to be
unloaded and re-loaded (i.e. updated) without requiring domUs to be halted.
This was also tested by running:
while true;
do echo vbd-$DOMID-$VBD >unbind;
echo unbound;
sleep 5;
rmmod xen-blkback;
echo unloaded;
sleep 1;
modprobe xen-blkback;
echo bound;
cd $(pwd);
sleep 3;
done
in dom0 whilst running the same loop as above in the (single) PV guest.
Some (less stressful) testing has also been done using a Windows HVM guest
with the latest 9.0 PV drivers installed.
Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
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Julian Wiedmann
Alexandra Winter
Hangbin Liu
Florian Fainelli
Linus Torvalds
Charles McLachlan
Edward Cree
Haiyang Zhang
Russell King
Manish Chopra
Arthur Kiyanovski
Padmanabhan Rajanbabu
Jiangfeng Xiao
Rahul Lakkireddy
Dave Airlie
Stefan Haberland
Jan Höppner
Andy Shevchenko
Enrico Weigelt, metux IT consult
Michael Haener
Hans de Goede
Liming Sun
Aditya Pakki
Paul Durrant