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Commit 77acc6b55ae4 ("riscv: add support for kernel-mode FPU") and
commit a28e4b672f04 ("drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT")
enabled support for CONFIG_DRM_AMD_DC_FP with RISC-V. Unfortunately,
this exposed -Wframe-larger-than warnings (which become fatal with
CONFIG_WERROR=y) when building ARCH=riscv allmodconfig with clang:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:58:13: error: stack frame size (2448) exceeds limit (2048) in 'DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation' [-Werror,-Wframe-larger-than]
58 | static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation(
| ^
1 error generated.
Many functions in this file use a large number of parameters, which must
be passed on the stack at a certain pointer due to register exhaustion,
which can cause high stack usage when inlining and issues with stack
slot analysis get involved. While the compiler can and should do better
(as GCC uses less than half the amount of stack space for the same
function), it is not as simple as a fix as adjusting the functions not
to take a large number of parameters.
Unfortunately, modifying these files to avoid the problem is a difficult
to justify approach because any revisions to the files in the kernel
tree never make it back to the original source (so copies of the code
for newer hardware revisions just reintroduce the issue) and the files
are hard to read/modify due to being "gcc-parsable HW gospel, coming
straight from HW engineers".
Avoid building the problematic code for RISC-V by modifying the existing
condition for arm64 that exists for the same reason. Factor out the
logical not to make the condition a little more readable naturally.
Fixes: a28e4b672f04 ("drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT")
Reported-by: Palmer Dabbelt <[email protected]>
Closes: https://lore.kernel.org/[email protected]/
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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[WHY]
Empty SST TUs are illegal to transmit over a USB4 DP tunnel.
Current policy is to configure stream encoder to pack 2 pixels per pclk
even when ODM combine is not in use, allowing seamless dynamic ODM
reconfiguration. However, in extreme edge cases where average pixel
count per TU is less than 2, this can lead to unexpected empty TU
generation during compliance testing. For example, VIC 1 with a 1xHBR3
link configuration will average 1.98 pix/TU.
[HOW]
Calculate average pixel count per TU, and block 2 pixels per clock if
endpoint is a DPIA tunnel and pixel clock is low enough that we will
never require 2:1 ODM combine.
Cc: [email protected] # 6.6+
Reviewed-by: Wenjing Liu <[email protected]>
Acked-by: Hamza Mahfooz <[email protected]>
Signed-off-by: Michael Strauss <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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[Why & How]
Current DRAM setting would cause underflow on customer platform.
Modify dram_clock_change_latency_us from 11.72 to 34.0 us as per recommendation from HW team
Reviewed-by: Nicholas Kazlauskas <[email protected]>
Acked-by: Zaeem Mohamed <[email protected]>
Signed-off-by: Paul Hsieh <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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[Why]
Intermittent underflow observed when using 4k144 display on
dcn351
[How]
Update dram_clock_change_latency_us from 11.72us to 34us
Reviewed-by: Nicholas Kazlauskas <[email protected]>
Acked-by: Zaeem Mohamed <[email protected]>
Signed-off-by: Daniel Miess <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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This reverts commit b8c415e3bf98 ("drm/amdgpu: take runtime pm reference
when we attach a buffer") and commit 425285d39afd ("drm/amdgpu: add amdgpu
runpm usage trace for separate funcs").
Taking a runtime pm reference for DMA-buf is actually completely
unnecessary and even dangerous.
The problem is that calling pm_runtime_get_sync() from the DMA-buf
callbacks is illegal because we have the reservation locked here
which is also taken during resume. So this would deadlock.
When the buffer is in GTT it is still accessible even when the GPU
is powered down and when it is in VRAM the buffer gets migrated to
GTT before powering down.
The only use case which would make it mandatory to keep the runtime
pm reference would be if we pin the buffer into VRAM, and that's not
something we currently do.
v2: improve the commit message
Signed-off-by: Christian König <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
CC: [email protected]
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To achieve full occupancy CP hardware needs to know if CUs in SE are
symmetrically or asymmetrically harvested
v2: Reset is_symmetric_cus for each loop
Signed-off-by: Harish Kasiviswanathan <[email protected]>
Acked-by: Alex Deucher <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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We can't read/write to DCN registers while in IPS. Since, that can cause
the system to hang. So, before proceeding with the access in that
scenario, force the system out of IPS.
Cc: [email protected] # 6.6+
Reviewed-by: Roman Li <[email protected]>
Signed-off-by: Hamza Mahfooz <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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Which method is used to flush tlb does not depend on whether a reset is
in progress or not. We should skip flush altogether if the GPU will get
reset. So put both path under reset_domain read lock.
Signed-off-by: Yunxiang Li <[email protected]>
Reviewed-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
CC: [email protected]
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[Why]
Disable idle optimization for each atomic commit is unnecessary,
and can lead to a potential race condition.
[How]
Remove idle optimization check from amdgpu_dm_atomic_commit_tail()
Fixes: 196107eb1e15 ("drm/amd/display: Add IPS checks before dcn register access")
Cc: [email protected]
Reviewed-by: Hamza Mahfooz <[email protected]>
Acked-by: Roman Li <[email protected]>
Signed-off-by: Roman Li <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fix from Masami Hiramatsu:
- Restrict gen-API tests for synthetic and kprobe events to only be
built as modules, as they generate dynamic events that cannot be
removed, causing ftracetest and startup selftests to fail
* tag 'probes-fixes-v6.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Build event generation tests only as modules
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- fix for BCM6538 boards
- fix RB532 PCI workaround
* tag 'mips-fixes_6.10_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
Revert "MIPS: pci: lantiq: restore reset gpio polarity"
mips: bmips: BCM6358: make sure CBR is correctly set
MIPS: pci: lantiq: restore reset gpio polarity
MIPS: Routerboard 532: Fix vendor retry check code
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this selftest is designed for evaluating the SRv6 End.DX6 behavior
used with netfilter(rpfilter), in this example, for implementing
IPv6 L3 VPN use cases.
Signed-off-by: Jianguo Wu <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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this selftest is designed for evaluating the SRv6 End.DX4 behavior
used with netfilter(rpfilter), in this example, for implementing
IPv4 L3 VPN use cases.
Signed-off-by: Jianguo Wu <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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Currently, the sysctl net.netfilter.nf_hooks_lwtunnel depends on the
nf_conntrack module, but the nf_conntrack module is not always loaded.
Therefore, accessing net.netfilter.nf_hooks_lwtunnel may have an error.
Move sysctl nf_hooks_lwtunnel into the netfilter core.
Fixes: 7a3f5b0de364 ("netfilter: add netfilter hooks to SRv6 data plane")
Suggested-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: Jianguo Wu <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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On some systems the processor thermal device interrupt is shared with
other PCI devices. In this case return IRQ_NONE from the interrupt
handler when the interrupt is not for the processor thermal device.
Signed-off-by: Srinivas Pandruvada <[email protected]>
Fixes: f0658708e863 ("thermal: int340x: processor_thermal: Use non MSI interrupts by default")
Cc: 6.7+ <[email protected]> # 6.7+
Signed-off-by: Rafael J. Wysocki <[email protected]>
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behaviors
input_action_end_dx4() and input_action_end_dx6() are called NF_HOOK() for
PREROUTING hook, in PREROUTING hook, we should passing a valid indev,
and a NULL outdev to NF_HOOK(), otherwise may trigger a NULL pointer
dereference, as below:
[74830.647293] BUG: kernel NULL pointer dereference, address: 0000000000000090
[74830.655633] #PF: supervisor read access in kernel mode
[74830.657888] #PF: error_code(0x0000) - not-present page
[74830.659500] PGD 0 P4D 0
[74830.660450] Oops: 0000 [#1] PREEMPT SMP PTI
...
[74830.664953] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[74830.666569] RIP: 0010:rpfilter_mt+0x44/0x15e [ipt_rpfilter]
...
[74830.689725] Call Trace:
[74830.690402] <IRQ>
[74830.690953] ? show_trace_log_lvl+0x1c4/0x2df
[74830.692020] ? show_trace_log_lvl+0x1c4/0x2df
[74830.693095] ? ipt_do_table+0x286/0x710 [ip_tables]
[74830.694275] ? __die_body.cold+0x8/0xd
[74830.695205] ? page_fault_oops+0xac/0x140
[74830.696244] ? exc_page_fault+0x62/0x150
[74830.697225] ? asm_exc_page_fault+0x22/0x30
[74830.698344] ? rpfilter_mt+0x44/0x15e [ipt_rpfilter]
[74830.699540] ipt_do_table+0x286/0x710 [ip_tables]
[74830.700758] ? ip6_route_input+0x19d/0x240
[74830.701752] nf_hook_slow+0x3f/0xb0
[74830.702678] input_action_end_dx4+0x19b/0x1e0
[74830.703735] ? input_action_end_t+0xe0/0xe0
[74830.704734] seg6_local_input_core+0x2d/0x60
[74830.705782] lwtunnel_input+0x5b/0xb0
[74830.706690] __netif_receive_skb_one_core+0x63/0xa0
[74830.707825] process_backlog+0x99/0x140
[74830.709538] __napi_poll+0x2c/0x160
[74830.710673] net_rx_action+0x296/0x350
[74830.711860] __do_softirq+0xcb/0x2ac
[74830.713049] do_softirq+0x63/0x90
input_action_end_dx4() passing a NULL indev to NF_HOOK(), and finally
trigger a NULL dereference in rpfilter_mt()->rpfilter_is_loopback():
static bool
rpfilter_is_loopback(const struct sk_buff *skb,
const struct net_device *in)
{
// in is NULL
return skb->pkt_type == PACKET_LOOPBACK ||
in->flags & IFF_LOOPBACK;
}
Fixes: 7a3f5b0de364 ("netfilter: add netfilter hooks to SRv6 data plane")
Signed-off-by: Jianguo Wu <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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When destroying all sets, we are either in pernet exit phase or
are executing a "destroy all sets command" from userspace. The latter
was taken into account in ip_set_dereference() (nfnetlink mutex is held),
but the former was not. The patch adds the required check to
rcu_dereference_protected() in ip_set_dereference().
Fixes: 4e7aaa6b82d6 ("netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type")
Reported-by: [email protected]
Reported-by: [email protected]
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-lkp/[email protected]
Signed-off-by: Jozsef Kadlecsik <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
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The patch 15a6af94a277 ("spi: Increase imx51 ecspi burst length based
on transfer length") increased the burst length calculation in
mx51_ecspi_prepare_transfer() to be based on the transfer length.
This breaks HW CS + SPI_CS_WORD support which was added in
6e95b23a5b2d ("spi: imx: Implement support for CS_WORD") and transfers
with bits-per-word != 8, 16, 32.
SPI_CS_WORD means the CS should be toggled after each word. The
implementation in the imx-spi driver relies on the fact that the HW CS
is toggled automatically by the controller after each burst length
number of bits. Setting the burst length to the number of bits of the
_whole_ message breaks this use case.
Further the patch 15a6af94a277 ("spi: Increase imx51 ecspi burst
length based on transfer length") claims to optimize the transfers.
But even without this patch, on modern spi-imx controllers with
"dynamic_burst = true" (imx51, imx6 and newer), the transfers are
already optimized, i.e. the burst length is dynamically adjusted in
spi_imx_push() to avoid the pause between the SPI bursts. This has
been confirmed by a scope measurement on an imx6d.
Subsequent Patches tried to fix these and other problems:
- 5f66db08cbd3 ("spi: imx: Take in account bits per word instead of assuming 8-bits")
- e9b220aeacf1 ("spi: spi-imx: correctly configure burst length when using dma")
- c712c05e46c8 ("spi: imx: fix the burst length at DMA mode and CPU mode")
- cf6d79a0f576 ("spi: spi-imx: fix off-by-one in mx51 CPU mode burst length")
but the HW CS + SPI_CS_WORD use case is still broken.
To fix the problems revert the burst size calculation in
mx51_ecspi_prepare_transfer() back to the original form, before
15a6af94a277 ("spi: Increase imx51 ecspi burst length based on
transfer length") was applied.
Cc: Stefan Moring <[email protected]>
Cc: Stefan Bigler <[email protected]>
Cc: Clark Wang <[email protected]>
Cc: Carlos Song <[email protected]>
Cc: Sebastian Reichel <[email protected]>
Cc: Thorsten Scherer <[email protected]>
Fixes: 15a6af94a277 ("spi: Increase imx51 ecspi burst length based on transfer length")
Fixes: 5f66db08cbd3 ("spi: imx: Take in account bits per word instead of assuming 8-bits")
Fixes: e9b220aeacf1 ("spi: spi-imx: correctly configure burst length when using dma")
Fixes: c712c05e46c8 ("spi: imx: fix the burst length at DMA mode and CPU mode")
Fixes: cf6d79a0f576 ("spi: spi-imx: fix off-by-one in mx51 CPU mode burst length")
Link: https://lore.kernel.org/all/[email protected]
Signed-off-by: Marc Kleine-Budde <[email protected]>
Tested-by: Thorsten Scherer <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Netlink flags, although they don't have payload at the netlink level,
are represented as having "True" as value in pyroute2.
Without it, trying to add a flow with a flag-type action (e.g: pop_vlan)
fails with the following traceback:
Traceback (most recent call last):
File "[...]/ovs-dpctl.py", line 2498, in <module>
sys.exit(main(sys.argv))
^^^^^^^^^^^^^^
File "[...]/ovs-dpctl.py", line 2487, in main
ovsflow.add_flow(rep["dpifindex"], flow)
File "[...]/ovs-dpctl.py", line 2136, in add_flow
reply = self.nlm_request(
^^^^^^^^^^^^^^^^^
File "[...]/pyroute2/netlink/nlsocket.py", line 822, in nlm_request
return tuple(self._genlm_request(*argv, **kwarg))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "[...]/pyroute2/netlink/generic/__init__.py", line 126, in
nlm_request
return tuple(super().nlm_request(*argv, **kwarg))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "[...]/pyroute2/netlink/nlsocket.py", line 1124, in nlm_request
self.put(msg, msg_type, msg_flags, msg_seq=msg_seq)
File "[...]/pyroute2/netlink/nlsocket.py", line 389, in put
self.sendto_gate(msg, addr)
File "[...]/pyroute2/netlink/nlsocket.py", line 1056, in sendto_gate
msg.encode()
File "[...]/pyroute2/netlink/__init__.py", line 1245, in encode
offset = self.encode_nlas(offset)
^^^^^^^^^^^^^^^^^^^^^^^^
File "[...]/pyroute2/netlink/__init__.py", line 1560, in encode_nlas
nla_instance.setvalue(cell[1])
File "[...]/pyroute2/netlink/__init__.py", line 1265, in setvalue
nlv.setvalue(nla_tuple[1])
~~~~~~~~~^^^
IndexError: list index out of range
Signed-off-by: Adrian Moreno <[email protected]>
Acked-by: Aaron Conole <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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This patch fixes the below build warning messages that are
caused due to linking same files to multiple modules by
exporting the required symbols.
"scripts/Makefile.build:244: drivers/net/ethernet/marvell/octeontx2/nic/Makefile:
otx2_devlink.o is added to multiple modules: rvu_nicpf rvu_nicvf
scripts/Makefile.build:244: drivers/net/ethernet/marvell/octeontx2/nic/Makefile:
otx2_dcbnl.o is added to multiple modules: rvu_nicpf rvu_nicvf"
Fixes: 8e67558177f8 ("octeontx2-pf: PFC config support with DCBx").
Signed-off-by: Geetha sowjanya <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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LPM consists of HIPM (host initiated power management) and DIPM
(device initiated power management).
ata_eh_set_lpm() will only enable HIPM if both the HBA and the device
supports it.
However, DIPM will be enabled as long as the device supports it.
The HBA will later reject the device's request to enter a power state
that it does not support (Slumber/Partial/DevSleep) (DevSleep is never
initiated by the device).
For a HBA that doesn't support any LPM states, simply don't set a LPM
policy such that all the HIPM/DIPM probing/enabling will be skipped.
Not enabling HIPM or DIPM in the first place is safer than relying on
the device following the AHCI specification and respecting the NAK.
(There are comments in the code that some devices misbehave when
receiving a NAK.)
Performing this check in ahci_update_initial_lpm_policy() also has the
advantage that a HBA that doesn't support any LPM states will take the
exact same code paths as a port that is external/hot plug capable.
Side note: the port in ata_port_dbg() has not been given a unique id yet,
but this is not overly important as the debug print is disabled unless
explicitly enabled using dynamic debug. A follow-up series will make sure
that the unique id assignment will be done earlier. For now, the important
thing is that the function returns before setting the LPM policy.
Fixes: 7627a0edef54 ("ata: ahci: Drop low power policy board type")
Cc: [email protected]
Reviewed-by: Mario Limonciello <[email protected]>
Reviewed-by: Mika Westerberg <[email protected]>
Reviewed-by: Damien Le Moal <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Niklas Cassel <[email protected]>
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otx2_sq_append_skb makes used of __vlan_hwaccel_push_inside()
to unoffload VLANs - push them from skb meta data into skb data.
However, it omitts a check for __vlan_hwaccel_push_inside()
returning NULL.
Found by inspection based on [1] and [2].
Compile tested only.
[1] Re: [PATCH net-next v1] net: stmmac: Enable TSO on VLANs
https://lore.kernel.org/all/[email protected]/
[2] Re: [PATCH net-next v2] net: stmmac: Enable TSO on VLANs
https://lore.kernel.org/all/CANn89i+11L5=tKsa7V7Aeyxaj6nYGRwy35PAbCRYJ73G+b25sg@mail.gmail.com/
Fixes: fd9d7859db6c ("octeontx2-pf: Implement ingress/egress VLAN offload")
Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Heng Qi says:
====================
virtio_net: fixes for checksum offloading and XDP handling
This series of patches aim to address two specific issues identified
in the virtio_net driver related to checksum offloading and XDP
processing of fully checksummed packets.
The first patch corrects the handling of checksum offloading in the
driver. The second patch addresses an issue where the XDP program had
no trouble with fully checksummed packets.
====================
Signed-off-by: David S. Miller <[email protected]>
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The XDP program can't correctly handle partially checksummed
packets, but works fine with fully checksummed packets. If the
device has already validated fully checksummed packets, then
the driver doesn't need to re-validate them, saving CPU resources.
Additionally, the driver does not drop all partially checksummed
packets when VIRTIO_NET_F_GUEST_CSUM is not negotiated. This is
not a bug, as the driver has always done this.
Fixes: 436c9453a1ac ("virtio-net: keep vnet header zeroed after processing XDP")
Signed-off-by: Heng Qi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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In virtio spec 0.95, VIRTIO_NET_F_GUEST_CSUM was designed to handle
partially checksummed packets, and the validation of fully checksummed
packets by the device is independent of VIRTIO_NET_F_GUEST_CSUM
negotiation. However, the specification erroneously stated:
"If VIRTIO_NET_F_GUEST_CSUM is not negotiated, the device MUST set flags
to zero and SHOULD supply a fully checksummed packet to the driver."
This statement is inaccurate because even without VIRTIO_NET_F_GUEST_CSUM
negotiation, the device can still set the VIRTIO_NET_HDR_F_DATA_VALID flag.
Essentially, the device can facilitate the validation of these packets'
checksums - a process known as RX checksum offloading - removing the need
for the driver to do so.
This scenario is currently not implemented in the driver and requires
correction. The necessary specification correction[1] has been made and
approved in the virtio TC vote.
[1] https://lists.oasis-open.org/archives/virtio-comment/202401/msg00011.html
Fixes: 4f49129be6fa ("virtio-net: Set RXCSUM feature if GUEST_CSUM is available")
Signed-off-by: Heng Qi <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Acked-by: Jason Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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After ecf848eb934b ("net: usb: ax88179_178a: fix link status when link is
set to down/up") to not reset from usbnet_open after the reset from
usbnet_probe at initialization stage to speed up this, some issues have
been reported.
It seems to happen that if the initialization is slower, and some time
passes between the probe operation and the open operation, the second reset
from open is necessary too to have the device working. The reason is that
if there is no activity with the phy, this is "disconnected".
In order to improve this, the solution is to detect when the phy is
"disconnected", and we can use the phy status register for this. So we will
only reset the device from reset operation in this situation, that is, only
if necessary.
The same bahavior is happening when the device is stopped (link set to
down) and later is restarted (link set to up), so if the phy keeps working
we only need to enable the mac again, but if enough time passes between the
device stop and restart, reset is necessary, and we can detect the
situation checking the phy status register too.
cc: [email protected] # 6.6+
Fixes: ecf848eb934b ("net: usb: ax88179_178a: fix link status when link is set to down/up")
Reported-by: Yongqin Liu <[email protected]>
Reported-by: Antje Miederhöfer <[email protected]>
Reported-by: Arne Fitzenreiter <[email protected]>
Tested-by: Yongqin Liu <[email protected]>
Tested-by: Antje Miederhöfer <[email protected]>
Signed-off-by: Jose Ignacio Tornos Martinez <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Commit
6791e0ea3071 ("x86/resctrl: Access per-rmid structures by index")
adds logic to map individual monitoring groups into a global index space used
for tracking allocated RMIDs.
Attempts to free the default RMID are ignored in free_rmid(), and this works
fine on x86.
With arm64 MPAM, there is a latent bug here however: on platforms with no
monitors exposed through resctrl, each control group still gets a different
monitoring group ID as seen by the hardware, since the CLOSID always forms part
of the monitoring group ID.
This means that when removing a control group, the code may try to free this
group's default monitoring group RMID for real. If there are no monitors
however, the RMID tracking table rmid_ptrs[] would be a waste of memory and is
never allocated, leading to a splat when free_rmid() tries to dereference the
table.
One option would be to treat RMID 0 as special for every CLOSID, but this would
be ugly since bookkeeping still needs to be done for these monitoring group IDs
when there are monitors present in the hardware.
Instead, add a gating check of resctrl_arch_mon_capable() in free_rmid(), and
just do nothing if the hardware doesn't have monitors.
This fix mirrors the gating checks already present in
mkdir_rdt_prepare_rmid_alloc() and elsewhere.
No functional change on x86.
[ bp: Massage commit message. ]
Fixes: 6791e0ea3071 ("x86/resctrl: Access per-rmid structures by index")
Signed-off-by: Dave Martin <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Reinette Chatre <[email protected]>
Tested-by: Reinette Chatre <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Since commit 2282679fb20b ("mm: submit multipage write for SWP_FS_OPS
swap-space"), we can plug multiple pages then unplug them all together.
That means iov_iter_count(iter) could be way bigger than PAGE_SIZE, it
actually equals the size of iov_iter_npages(iter, INT_MAX).
Note this issue has nothing to do with large folios as we don't support
THP_SWPOUT to non-block devices.
Fixes: 2282679fb20b ("mm: submit multipage write for SWP_FS_OPS swap-space")
Reported-by: Christoph Hellwig <[email protected]>
Closes: https://lore.kernel.org/linux-mm/[email protected]/
Cc: NeilBrown <[email protected]>
Cc: Anna Schumaker <[email protected]>
Cc: Steve French <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Chuanhua Han <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Chris Li <[email protected]>
Cc: "Huang, Ying" <[email protected]>
Cc: Jeff Layton <[email protected]>
Cc: Paulo Alcantara <[email protected]>
Cc: Ronnie Sahlberg <[email protected]>
Cc: Shyam Prasad N <[email protected]>
Cc: Tom Talpey <[email protected]>
Cc: Bharath SM <[email protected]>
Cc: <[email protected]>
Signed-off-by: Barry Song <[email protected]>
Signed-off-by: Steve French <[email protected]>
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commit be27b8965297 ("net: stmmac: replace priv->speed with
the portTransmitRate from the tc-cbs parameters") introduced
a problem. When deleting, it prompts "Invalid portTransmitRate
0 (idleSlope - sendSlope)" and exits. Add judgment on cbs.enable.
Only when offload is enabled, speed divider needs to be calculated.
Fixes: be27b8965297 ("net: stmmac: replace priv->speed with the portTransmitRate from the tc-cbs parameters")
Signed-off-by: Xiaolei Wang <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Get master/slave configuration for initial system start with the link in
down state. This ensures ethtool shows current configuration. Also
fixes link reconfiguration with ethtool while in down state, preventing
ethtool from displaying outdated configuration.
Even though dp83tg720_config_init() is executed periodically as long as
the link is in admin up state but no carrier is detected, this is not
sufficient for the link in admin down state where
dp83tg720_read_status() is not periodically executed. To cover this
case, we need an extra read role configuration in
dp83tg720_config_aneg().
Fixes: cb80ee2f9bee1 ("net: phy: Add support for the DP83TG720S Ethernet PHY")
Cc: [email protected]
Signed-off-by: Oleksij Rempel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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In case this PHY is bootstrapped for managed mode, we need to manually
wake it. Otherwise no link will be detected.
Cc: [email protected]
Fixes: cb80ee2f9bee1 ("net: phy: Add support for the DP83TG720S Ethernet PHY")
Signed-off-by: Oleksij Rempel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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Milkv Duo does not have a write-protect pin, so disable write protect
to prevent SDcards misdetected as read-only.
Fixes: 89a7056ed4f7 ("riscv: dts: sophgo: add sdcard support for milkv duo")
Signed-off-by: Haylen Chu <[email protected]>
Link: https://lore.kernel.org/r/SEYPR01MB4221943C7B101DD2318DA0D3D7CE2@SEYPR01MB4221.apcprd01.prod.exchangelabs.com
Signed-off-by: Inochi Amaoto <[email protected]>
Signed-off-by: Chen Wang <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
- filesystems: warn_unused_result warnings
- seccomp: format-zero-length warnings
- fchmodat2: clang build warnings due to-static-libasan
- openat2: clang build warnings due to static-libasan, LOCAL_HDRS
* tag 'linux_kselftest-fixes-6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/fchmodat2: fix clang build failure due to -static-libasan
selftests/openat2: fix clang build failures: -static-libasan, LOCAL_HDRS
selftests: seccomp: fix format-zero-length warnings
selftests: filesystems: fix warn_unused_result build warnings
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openvswitch.sh makes use of substitutions of the form ${ns:0:1}, to
obtain the first character of $ns. Empirically, this is works with bash
but not dash. When run with dash these evaluate to an empty string and
printing an error to stdout.
# dash -c 'ns=client; echo "${ns:0:1}"' 2>error
# cat error
dash: 1: Bad substitution
# bash -c 'ns=client; echo "${ns:0:1}"' 2>error
c
# cat error
This leads to tests that neither pass nor fail.
F.e.
TEST: arp_ping [START]
adding sandbox 'test_arp_ping'
Adding DP/Bridge IF: sbx:test_arp_ping dp:arpping {, , }
create namespaces
./openvswitch.sh: 282: eval: Bad substitution
TEST: ct_connect_v4 [START]
adding sandbox 'test_ct_connect_v4'
Adding DP/Bridge IF: sbx:test_ct_connect_v4 dp:ct4 {, , }
./openvswitch.sh: 322: eval: Bad substitution
create namespaces
Resolve this by making openvswitch.sh a bash script.
Fixes: 918423fda910 ("selftests: openvswitch: add an initial flow programming case")
Signed-off-by: Simon Horman <[email protected]>
Reviewed-by: Przemek Kitszel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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On 32bit systems, the "4 * max" multiply can overflow. Use kcalloc()
to do the allocation to prevent this.
Fixes: 44c494c8e30e ("ptp: track available ptp vclocks information")
Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Wojciech Drewek <[email protected]>
Reviewed-by: Jiri Pirko <[email protected]>
Reviewed-by: Heng Qi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
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While adding a SPI device, the SPI core ensures that multiple logical CS
doesn't map to the same physical CS. For example, spi->chip_select[0] !=
spi->chip_select[1] and so forth. However, unlike the SPI master, the SPI
slave doesn't have the list of chip selects, this leads to probe failure
when the SPI controller is configured as slave. Update the
__spi_add_device() function to perform this check only if the SPI
controller is configured as master.
Fixes: 4d8ff6b0991d ("spi: Add multi-cs memories support in SPI core")
Signed-off-by: Amit Kumar Mahapatra <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Hardcoding the number of CPUs at compile time does improve code
generation, but if you get it wrong the result will be confusion.
We already limited this earlier to only "experts" (see commit
fe5759d5bfda "cpumask: limit visibility of FORCE_NR_CPUS"), but with
distro kernel configs often having EXPERT enabled, that turns out to not
be much of a limit.
To quote the philosophers at Disney: "Everyone can be an expert. And
when everyone's an expert, no one will be".
There's a runtime warning if you then set nr_cpus to anything but the
forced number, but apparently that can be ignored too [1] and by then
it's pretty much too late anyway.
If we had some real way to limit this to "embedded only", maybe it would
be worth it, but let's see if anybody even notices that the option is
gone. We need to simplify kernel configuration anyway.
Link: https://lore.kernel.org/all/[email protected]/ [1]
Reported-by: Steven Rostedt <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Cc: Paul McKenney <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Yury Norov <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Bail from outer address space loop, not just the inner memslot loop, when
a "null" handler is encountered by __kvm_handle_hva_range(), which is the
intended behavior. On x86, which has multiple address spaces thanks to
SMM emulation, breaking from just the memslot loop results in undefined
behavior due to assigning the non-existent return value from kvm_null_fn()
to a bool.
In practice, the bug is benign as kvm_mmu_notifier_invalidate_range_end()
is the only caller that passes handler=kvm_null_fn, and it doesn't set
flush_on_ret, i.e. assigning garbage to r.ret is ultimately ignored. And
for most configuration the compiler elides the entire sequence, i.e. there
is no undefined behavior at runtime.
------------[ cut here ]------------
UBSAN: invalid-load in arch/x86/kvm/../../../virt/kvm/kvm_main.c:655:10
load of value 160 is not a valid value for type '_Bool'
CPU: 370 PID: 8246 Comm: CPU 0/KVM Not tainted 6.8.2-amdsos-build58-ubuntu-22.04+ #1
Hardware name: AMD Corporation Sh54p/Sh54p, BIOS WPC4429N 04/25/2024
Call Trace:
<TASK>
dump_stack_lvl+0x48/0x60
ubsan_epilogue+0x5/0x30
__ubsan_handle_load_invalid_value+0x79/0x80
kvm_mmu_notifier_invalidate_range_end.cold+0x18/0x4f [kvm]
__mmu_notifier_invalidate_range_end+0x63/0xe0
__split_huge_pmd+0x367/0xfc0
do_huge_pmd_wp_page+0x1cc/0x380
__handle_mm_fault+0x8ee/0xe50
handle_mm_fault+0xe4/0x4a0
__get_user_pages+0x190/0x840
get_user_pages_unlocked+0xe0/0x590
hva_to_pfn+0x114/0x550 [kvm]
kvm_faultin_pfn+0xed/0x5b0 [kvm]
kvm_tdp_page_fault+0x123/0x170 [kvm]
kvm_mmu_page_fault+0x244/0xaa0 [kvm]
vcpu_enter_guest+0x592/0x1070 [kvm]
kvm_arch_vcpu_ioctl_run+0x145/0x8a0 [kvm]
kvm_vcpu_ioctl+0x288/0x6d0 [kvm]
__x64_sys_ioctl+0x8f/0xd0
do_syscall_64+0x77/0x120
entry_SYSCALL_64_after_hwframe+0x6e/0x76
</TASK>
---[ end trace ]---
Fixes: 071064f14d87 ("KVM: Don't take mmu_lock for range invalidation unless necessary")
Signed-off-by: Babu Moger <[email protected]>
Link: https://lore.kernel.org/r/b8723d39903b64c241c50f5513f804390c7b5eec.1718203311.git.babu.moger@amd.com
[sean: massage changelog]
Signed-off-by: Sean Christopherson <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
"Another small set of EFI fixes. Only the x86 one is likely to affect
any actual users (and has a cc:stable), but the issue it fixes was
only observed in an unusual context (kexec in a confidential VM).
- Ensure that EFI runtime services are not unmapped by PAN on ARM
- Avoid freeing the memory holding the EFI memory map inadvertently
on x86
- Avoid a false positive kmemleak warning on arm64"
* tag 'efi-fixes-for-v6.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi/arm64: Fix kmemleak false positive in arm64_efi_rt_init()
efi/x86: Free EFI memory map only when installing a new one.
efi/arm: Disable LPAE PAN when calling EFI runtime services
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Add OCTAL mode support.
Issue detected using "--octal" spidev_test's option.
Signed-off-by: Patrice Chotard <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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In case usage of OCTAL mode, buswidth parameter can take the value 8.
As return value of stm32_qspi_get_mode() is used to configure fields
of CCR registers that are 2 bits only (fields IMODE, ADMODE, ADSIZE,
DMODE), clamp return value of stm32_qspi_get_mode() to 4.
Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback")
Cc: [email protected]
Signed-off-by: Patrice Chotard <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Misplaced parenthesis make test of mode wrong in case mode is equal to
SPI_TX_OCTAL or SPI_RX_OCTAL.
Simplify this sanity test, if one of this bit is set, property
cs-gpio must be present in DT.
Fixes: a557fca630cc ("spi: stm32_qspi: Add transfer_one_message() spi callback")
Cc: [email protected]
Signed-off-by: Patrice Chotard <[email protected]>
Link: https://msgid.link/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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zones_ht is a global hashtable for flow_table with zone as key. However,
it does not consider netns when getting a flow_table from zones_ht in
tcf_ct_init(), and it means an act_ct action in netns A may get a
flow_table that belongs to netns B if it has the same zone value.
In Shuang's test with the TOPO:
tcf2_c <---> tcf2_sw1 <---> tcf2_sw2 <---> tcf2_s
tcf2_sw1 and tcf2_sw2 saw the same flow and used the same flow table,
which caused their ct entries entering unexpected states and the
TCP connection not able to end normally.
This patch fixes the issue simply by adding netns into the key of
tcf_ct_flow_table so that an act_ct action gets a flow_table that
belongs to its own netns in tcf_ct_init().
Note that for easy coding we don't use tcf_ct_flow_table.nf_ft.net,
as the ct_ft is initialized after inserting it to the hashtable in
tcf_ct_flow_table_get() and also it requires to implement several
functions in rhashtable_params including hashfn, obj_hashfn and
obj_cmpfn.
Fixes: 64ff70b80fd4 ("net/sched: act_ct: Offload established connections to flow table")
Reported-by: Shuang Li <[email protected]>
Signed-off-by: Xin Long <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Link: https://lore.kernel.org/r/1db5b6cc6902c5fc6f8c6cbd85494a2008087be5.1718488050.git.lucien.xin@gmail.com
Signed-off-by: Paolo Abeni <[email protected]>
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As it says in commit 3bc07321ccc2 ("xfrm: Force a dst refcount before
entering the xfrm type handlers"):
"Crypto requests might return asynchronous. In this case we leave the
rcu protected region, so force a refcount on the skb's destination
entry before we enter the xfrm type input/output handlers."
On TIPC decryption path it has the same problem, and skb_dst_force()
should be called before doing decryption to avoid a possible crash.
Shuang reported this issue when this warning is triggered:
[] WARNING: include/net/dst.h:337 tipc_sk_rcv+0x1055/0x1ea0 [tipc]
[] Kdump: loaded Tainted: G W --------- - - 4.18.0-496.el8.x86_64+debug
[] Workqueue: crypto cryptd_queue_worker
[] RIP: 0010:tipc_sk_rcv+0x1055/0x1ea0 [tipc]
[] Call Trace:
[] tipc_sk_mcast_rcv+0x548/0xea0 [tipc]
[] tipc_rcv+0xcf5/0x1060 [tipc]
[] tipc_aead_decrypt_done+0x215/0x2e0 [tipc]
[] cryptd_aead_crypt+0xdb/0x190
[] cryptd_queue_worker+0xed/0x190
[] process_one_work+0x93d/0x17e0
Fixes: fc1b6d6de220 ("tipc: introduce TIPC encryption & authentication")
Reported-by: Shuang Li <[email protected]>
Signed-off-by: Xin Long <[email protected]>
Link: https://lore.kernel.org/r/fbe3195fad6997a4eec62d9bf076b2ad03ac336b.1718476040.git.lucien.xin@gmail.com
Signed-off-by: Paolo Abeni <[email protected]>
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syzbot found hanging tasks waiting on rtnl_lock [1]
A reproducer is available in the syzbot bug.
When a request to add multiple actions with the same index is sent, the
second request will block forever on the first request. This holds
rtnl_lock, and causes tasks to hang.
Return -EAGAIN to prevent infinite looping, while keeping documented
behavior.
[1]
INFO: task kworker/1:0:5088 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:23744 pid:5088 tgid:5088 ppid:2 flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
wiphy_lock include/net/cfg80211.h:5953 [inline]
reg_leave_invalid_chans net/wireless/reg.c:2466 [inline]
reg_check_chans_work+0x10a/0x10e0 net/wireless/reg.c:2481
Fixes: 0190c1d452a9 ("net: sched: atomically check-allocate action")
Reported-by: [email protected]
Closes: https://syzkaller.appspot.com/bug?extid=b87c222546179f4513a7
Signed-off-by: David Ruth <[email protected]>
Reviewed-by: Jamal Hadi Salim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
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Raju Lakkaraju says:
====================
net: lan743x: Fixes for multiple WOL related issues
This patch series implement the following fixes:
1. Disable WOL upon resume in order to restore full data path operation
2. Support WOL at both the PHY and MAC appropriately
3. Remove interrupt mask clearing from config_init
Patch-3 was sent seperately earlier. Review comments in link:
https://lore.kernel.org/lkml/[email protected]/T/
====================
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
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When the system resumes from sleep, the phy_init_hw() function invokes
config_init(), which clears all interrupt masks and causes wake events to be
lost in subsequent wake sequences. Remove interrupt mask clearing from
config_init() and preserve relevant masks in config_intr().
Fixes: 7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver")
Reviewed-by: Wojciech Drewek <[email protected]>
Signed-off-by: Raju Lakkaraju <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>
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Prevent options not supported by the PHY from being requested to it by the MAC
Whenever a WOL option is supported by both, the PHY is given priority
since that usually leads to better power savings.
Fixes: e9e13b6adc33 ("lan743x: fix for potential NULL pointer dereference with bare card")
Reviewed-by: Wojciech Drewek <[email protected]>
Signed-off-by: Raju Lakkaraju <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>
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When Wake-on-LAN (WoL) is active and the system is in suspend mode, triggering
a system event can wake the system from sleep, which may block the data path.
To restore normal data path functionality after waking, disable all wake-up
events. Furthermore, clear all Write 1 to Clear (W1C) status bits by writing
1's to them.
Fixes: 4d94282afd95 ("lan743x: Add power management support")
Reviewed-by: Wojciech Drewek <[email protected]>
Signed-off-by: Raju Lakkaraju <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>
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If it enter to runtime D3 state, it didn't shutup Headset MIC pin.
Signed-off-by: Kailang Yang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
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