| Commit message (Collapse) | Author | Age | Files | Lines |
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This patch fixes following (similar) warning reported by kbuild test robot:
In function ‘memcpy’,
inlined from ‘smsc75xx_init_mac_address’ at drivers/net/usb/smsc75xx.c:778:3,
inlined from ‘smsc75xx_bind’ at drivers/net/usb/smsc75xx.c:1501:2:
./include/linux/string.h:355:9: warning: argument 2 null where non-null expected [-Wnonnull]
return __builtin_memcpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/usb/smsc75xx.c: In function ‘smsc75xx_bind’:
./include/linux/string.h:355:9: note: in a call to built-in function ‘__builtin_memcpy’
I've replaced the offending memcpy with ether_addr_copy, because I'm
100% sure, that of_get_mac_address can't return NULL as it returns valid
pointer or ERR_PTR encoded value, nothing else.
I'm hesitant to just change IS_ERR into IS_ERR_OR_NULL check, as this
would make the warning disappear also, but it would be confusing to
check for impossible return value just to make a compiler happy.
I'm now changing all occurencies of memcpy to ether_addr_copy after the
of_get_mac_address call, as it's very likely, that we're going to get
similar reports from kbuild test robot in the future.
Fixes: a51645f70f63 ("net: ethernet: support of_get_mac_address new ERR_PTR error")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In commit d01f449c008a ("of_net: add NVMEM support to
of_get_mac_address") I've added `nvmem-mac-address` property which was
wrong idea as I've allocated the property with devm_kzalloc and then
added it to DT, so then 2 entities would be refcounting the allocation.
So if the driver unbinds, the buffer is freed, but DT code would be
still referencing that memory.
I'm removing this property completely instead of fixing it, as it's not
needed to have it.
Fixes: d01f449c008a ("of_net: add NVMEM support to of_get_mac_address")
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only set the device carrier state to on after receiving an up link
state indication from the underlying adapter. Likewise, if a down
link indication is receieved, update the carrier state accordingly.
This fix ensures that accurate carrier state is reported by the driver
following a link state update by the underlying adapter.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It was discovered in testing that the underlying hardware MAC
address will revert to initial settings following a device reset,
but the driver fails to resend the current OS MAC settings. This
oversight can result in dropped packets should the scenario occur.
Fix this by informing hardware of current MAC address settings
following any adapter initialization or resets.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Slightly delayed due to the issue with printk() calling
probe_kernel_read() interacting with our new user access prevention
stuff, but all fixed now.
The only out-of-area changes are the addition of a cpuhp_state, small
additions to Documentation and MAINTAINERS updates.
Highlights:
- Support for Kernel Userspace Access/Execution Prevention (like
SMAP/SMEP/PAN/PXN) on some 64-bit and 32-bit CPUs. This prevents
the kernel from accidentally accessing userspace outside
copy_to/from_user(), or ever executing userspace.
- KASAN support on 32-bit.
- Rework of where we map the kernel, vmalloc, etc. on 64-bit hash to
use the same address ranges we use with the Radix MMU.
- A rewrite into C of large parts of our idle handling code for
64-bit Book3S (ie. power8 & power9).
- A fast path entry for syscalls on 32-bit CPUs, for a 12-17% speedup
in the null_syscall benchmark.
- On 64-bit bare metal we have support for recovering from errors
with the time base (our clocksource), however if that fails
currently we hang in __delay() and never crash. We now have support
for detecting that case and short circuiting __delay() so we at
least panic() and reboot.
- Add support for optionally enabling the DAWR on Power9, which had
to be disabled by default due to a hardware erratum. This has the
effect of enabling hardware breakpoints for GDB, the downside is a
badly behaved program could crash the machine by pointing the DAWR
at cache inhibited memory. This is opt-in obviously.
- xmon, our crash handler, gets support for a read only mode where
operations that could change memory or otherwise disturb the system
are disabled.
Plus many clean-ups, reworks and minor fixes etc.
Thanks to: Christophe Leroy, Akshay Adiga, Alastair D'Silva, Alexey
Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar,
Anton Blanchard, Ben Hutchings, Bo YU, Breno Leitao, Cédric Le Goater,
Christopher M. Riedl, Christoph Hellwig, Colin Ian King, David Gibson,
Ganesh Goudar, Gautham R. Shenoy, George Spelvin, Greg Kroah-Hartman,
Greg Kurz, Horia Geantă, Jagadeesh Pagadala, Joel Stanley, Joe
Perches, Julia Lawall, Laurentiu Tudor, Laurent Vivier, Lukas Bulwahn,
Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael
Neuling, Mukesh Ojha, Nathan Fontenot, Nathan Lynch, Nicholas Piggin,
Nick Desaulniers, Oliver O'Halloran, Peng Hao, Qian Cai, Ravi
Bangoria, Rick Lindsley, Russell Currey, Sachin Sant, Stewart Smith,
Sukadev Bhattiprolu, Thomas Huth, Tobin C. Harding, Tyrel Datwyler,
Valentin Schneider, Wei Yongjun, Wen Yang, YueHaibing"
* tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (205 commits)
powerpc/64s: Use early_mmu_has_feature() in set_kuap()
powerpc/book3s/64: check for NULL pointer in pgd_alloc()
powerpc/mm: Fix hugetlb page initialization
ocxl: Fix return value check in afu_ioctl()
powerpc/mm: fix section mismatch for setup_kup()
powerpc/mm: fix redundant inclusion of pgtable-frag.o in Makefile
powerpc/mm: Fix makefile for KASAN
powerpc/kasan: add missing/lost Makefile
selftests/powerpc: Add a signal fuzzer selftest
powerpc/booke64: set RI in default MSR
ocxl: Provide global MMIO accessors for external drivers
ocxl: move event_fd handling to frontend
ocxl: afu_irq only deals with IRQ IDs, not offsets
ocxl: Allow external drivers to use OpenCAPI contexts
ocxl: Create a clear delineation between ocxl backend & frontend
ocxl: Don't pass pci_dev around
ocxl: Split pci.c
ocxl: Remove some unused exported symbols
ocxl: Remove superfluous 'extern' from headers
ocxl: read_pasid never returns an error, so make it void
...
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In case of error, the function eventfd_ctx_fdget() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().
This issue was detected by using the Coccinelle software.
Fixes: 060146614643 ("ocxl: move event_fd handling to frontend")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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External drivers that communicate via OpenCAPI will need to make
MMIO calls to interact with the devices.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Event_fd is only used in the driver frontend, so it does not
need to exist in the backend code. Relocate it to the frontend
and provide an opaque mechanism for consumers instead.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The use of offsets is required only in the frontend, so alter
the IRQ API to only work with IRQ IDs in the backend.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Most OpenCAPI operations require a valid context, so
exposing these functions to external drivers is necessary.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The OCXL driver contains both frontend code for interacting with userspace,
as well as backend code for interacting with the hardware.
This patch separates the backend code from the frontend so that it can be
used by other device drivers that communicate via OpenCAPI.
Relocate dev, cdev & sysfs files to the frontend code to allow external
drivers to maintain their own devices.
Reference counting on the device in the backend is replaced with kref
counting.
Move file & sysfs layer initialisation from core.c (backend) to
pci.c (frontend).
Create an ocxl_function oriented interface for initing devices &
enumerating AFUs.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This data is already available in a struct
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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In preparation for making core code available for external drivers,
move the core code out of pci.c and into core.c
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Remove some unused exported symbols.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The 'extern' keyword adds no value here.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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No need for a return value in read_pasid as it only returns 0.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The term 'link' is ambiguous (especially when the struct is used for a
list), so rename it for clarity.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Fixes gcc '-Wunused-but-set-variable' warning:
drivers/misc/ocxl/link.c: In function 'xsl_fault_handler':
drivers/misc/ocxl/link.c:187:17: warning: variable 'tid' set but not used
drivers/misc/ocxl/link.c:187:6: warning: variable 'lpid' set but not used
They are never used and can be removed.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch maps vmalloc, IO and vmemap regions in the 0xc address range
instead of the current 0xd and 0xf range. This brings the mapping closer
to radix translation mode.
With hash 64K page size each of this region is 512TB whereas with 4K config
we are limited by the max page table range of 64TB and hence there regions
are of 16TB size.
The kernel mapping is now:
On 4K hash
kernel_region_map_size = 16TB
kernel vmalloc start = 0xc000100000000000
kernel IO start = 0xc000200000000000
kernel vmemmap start = 0xc000300000000000
64K hash, 64K radix and 4k radix:
kernel_region_map_size = 512TB
kernel vmalloc start = 0xc008000000000000
kernel IO start = 0xc00a000000000000
kernel vmemmap start = 0xc00c000000000000
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Pull networking fixes from David Miller:
"Several bug fixes, many are quick merge-window regression cures:
- When NLM_F_EXCL is not set, allow same fib rule insertion. From
Hangbin Liu.
- Several cures in sja1105 DSA driver (while loop exit condition fix,
return of negative u8, etc.) from Vladimir Oltean.
- Handle tx/rx delays in realtek PHY driver properly, from Serge
Semin.
- Double free in cls_matchall, from Pieter Jansen van Vuuren.
- Disable SIOCSHWTSTAMP in macvlan/vlan containers, from Hangbin Liu.
- Endainness fixes in aqc111, from Oliver Neukum.
- Handle errors in packet_init properly, from Haibing Yue.
- Various W=1 warning fixes in kTLS, from Jakub Kicinski"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
nfp: add missing kdoc
net/tls: handle errors from padding_length()
net/tls: remove set but not used variables
docs/btf: fix the missing section marks
nfp: bpf: fix static check error through tightening shift amount adjustment
selftests: bpf: initialize bpf_object pointers where needed
packet: Fix error path in packet_init
net/tcp: use deferred jump label for TCP acked data hook
net: aquantia: fix undefined devm_hwmon_device_register_with_info reference
aqc111: fix double endianness swap on BE
aqc111: fix writing to the phy on BE
aqc111: fix endianness issue in aqc111_change_mtu
vlan: disable SIOCSHWTSTAMP in container
macvlan: disable SIOCSHWTSTAMP in container
tipc: fix hanging clients using poll with EPOLLOUT flag
tuntap: synchronize through tfiles array instead of tun->numqueues
tuntap: fix dividing by zero in ebpf queue selection
dwmac4_prog_mtl_tx_algorithms() missing write operation
ptp_qoriq: fix NULL access if ptp dt node missing
net/sched: avoid double free on matchall reoffload
...
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Add missing kdoc for app member.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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NFP shift instruction has something special. If shift direction is left
then shift amount of 1 to 31 is specified as 32 minus the amount to shift.
But no need to do this for indirect shift which has shift amount be 0. Even
after we do this subtraction, shift amount 0 will be turned into 32 which
will eventually be encoded the same as 0 because only low 5 bits are
encoded, but shift amount be 32 will fail the FIELD_PREP check done later
on shift mask (0x1f), due to 32 is out of mask range. Such error has been
observed when compiling nfp/bpf/jit.c using gcc 8.3 + O3.
This issue has started when indirect shift support added after which the
incoming shift amount to __emit_shf could be 0, therefore it is at that
time shift amount adjustment inside __emit_shf should have been tightened.
Fixes: 991f5b3651f6 ("nfp: bpf: support logic indirect shifts (BPF_[L|R]SH | BPF_X)")
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reported-by: Pablo Cascón <pablo.cascon@netronome.com
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.o: In function `aq_drvinfo_init':
aq_drvinfo.c:(.text+0xe8): undefined reference to `devm_hwmon_device_register_with_info'
Fix it by using #if IS_REACHABLE(CONFIG_HWMON).
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If you are using a function that does a swap in place,
you cannot just reuse the buffer on the assumption that it has
not been changed.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When writing to the phy on BE architectures an internal data structure
was directly given, leading to it being byte swapped in the wrong
way for the CPU in 50% of all cases. A temporary buffer must be used.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the MTU is large enough, the first write to the device
is just repeated. On BE architectures, however, the first
word of the command will be swapped a second time and garbage
will be written. Avoid that.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Miroslav pointed that with NET_ADMIN enabled in container, a normal user
could be mapped to root and is able to change the real device's rx
filter via ioctl on macvlan, which would affect the other ptp process on
host. Fix it by disabling SIOCSHWTSTAMP in container.
Fixes: 254c0a2bfedb ("macvlan: pass get_ts_info and SIOC[SG]HWTSTAMP ioctl to real device")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When a queue(tfile) is detached through __tun_detach(), we move the
last enabled tfile to the position where detached one sit but don't
NULL out last position. We expect to synchronize the datapath through
tun->numqueues. Unfortunately, this won't work since we're lacking
sufficient mechanism to order or synchronize the access to
tun->numqueues.
To fix this, NULL out the last position during detaching and check
RCU protected tfile against NULL instead of checking tun->numqueues in
datapath.
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: weiyongjun (A) <weiyongjun1@huawei.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: c8d68e6be1c3b ("tuntap: multiqueue support")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need check if tun->numqueues is zero (e.g for the persist device)
before trying to use it for modular arithmetic.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: 96f84061620c6("tun: add eBPF based queue selection method")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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net: ethernet: stmmac: dwmac4_prog_mtl_tx_algorithms() missing write operation
The value of MTL_OPERATION_MODE is not written back
Signed-off-by: Cheng Han <hancheng2009@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make sure ptp dt node exists before accessing it in case
of NULL pointer call trace.
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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NFP does not register devlink ports for representors (without
the "devlink: expose PF and VF representors as ports" series
there are no port flavours to expose them as).
Commit c25f08ac65e4 ("nfp: remove ndo_get_port_parent_id implementation")
went to far in removing ndo_get_port_parent_id for representors.
This causes redirection offloads to fail, and switch_id attribute
missing.
Reintroduce the ndo_get_port_parent_id callback for representor ports.
Fixes: c25f08ac65e4 ("nfp: remove ndo_get_port_parent_id implementation")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's prone to problems if delay is cleared out for other than RGMII
modes. So lets set/clear the TX-delay in the config register only
if actually RGMII-like interface mode is requested. This only
concerns rtl8211f chips.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are two chip pins named TXDLY and RXDLY which actually adds the 2ns
delays to TXC and RXC for TXD/RXD latching. Alas this is the only
documented info regarding the RGMII timing control configurations the PHY
provides. It turns out the same settings can be setup via MDIO registers
hidden in the extension pages layout. Particularly the extension page 0xa4
provides a register 0x1c, which bits 1 and 2 control the described delays.
They are used to implement the "rgmii-{id,rxid,txid}" phy-mode.
The hidden RGMII configs register utilization was found in the rtl8211e
U-boot driver:
https://elixir.bootlin.com/u-boot/v2019.01/source/drivers/net/phy/realtek.c#L99
There is also a freebsd-folks discussion regarding this register:
https://reviews.freebsd.org/D13591
It confirms that the register bits field must control the so called
configuration pins described in the table 12-13 of the official PHY
datasheet:
8:6 = PHY Address
5:4 = Auto-Negotiation
3 = Interface Mode Select
2 = RX Delay
1 = TX Delay
0 = SELRGV
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Dan Carpenter says:
The patch 640f763f98c2: "net: dsa: sja1105: Add support for Spanning
Tree Protocol" from May 5, 2019, leads to the following static
checker warning:
drivers/net/dsa/sja1105/sja1105_main.c:1073 sja1105_stp_state_get()
warn: signedness bug returning '(-22)'
The caller doesn't check for negative errors anyway.
Fixes: 640f763f98c2: ("net: dsa: sja1105: Add support for Spanning Tree Protocol")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The while-loop exit condition check is not correct; the
loop should continue if the returns from the function calls are
negative or the CRC status returns are invalid. Currently it
is ignoring the returns from the function calls. Fix this by
removing the status return checks and only break from the loop
at the very end when we know that all the success condtions have
been met.
Kudos to Dan Carpenter for describing the correct fix and
Vladimir Oltean for noting the change to the check on the number
of retries.
Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 8aa9ebccae87 ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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drivers/net/dsa/sja1105/sja1105_spi.c:486:21: warning: symbol 'sja1105et_regs' was not declared. Should it be static?
drivers/net/dsa/sja1105/sja1105_spi.c:511:21: warning: symbol 'sja1105pqrs_regs' was not declared. Should it be static?
Fixes: 8aa9ebccae87 ("net: dsa: Introduce driver for NXP SJA1105 5-port L2 switch")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai26@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The pointer l2_hdr is being assigned to itself, this is redundant
and can be removed.
Addresses-Coverity: ("Evaluation order violation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are several spelling mistakes in dev_err messages. Fix these.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull sparc updates from David Miller:
"Here we go:
- Fix various long standing issues in the sparc 32-bit IOMMU support
code, from Christoph Hellwig.
- Various other code cleanups and simplifications all over. From
Gustavo A. R. Silva, Jagadeesh Pagadala, Masahiro Yamada, Mauro
Carvalho Chehab, Mike Rapoport"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: simplify reduce_memory() function
sparc: use struct_size() in kzalloc()
docs: sparc: convert to ReST
sparc/iommu: merge iommu_get_one and __sbus_iommu_map_page
sparc/iommu: use __sbus_iommu_map_page to implement the map_sg path
sparc/iommu: fix __sbus_iommu_map_page for highmem pages
sparc/iommu: move per-page flushing into __sbus_iommu_map_page
sparc/iommu: pass a physical address to iommu_get_one
sparc/iommu: create a common helper for map_sg
sparc/iommu: merge iommu_release_one and sbus_iommu_unmap_page
sparc/iommu: use sbus_iommu_unmap_page in sbus_iommu_unmap_sg
sparc/iommu: use !PageHighMem to check if a page has a kernel mapping
sparc: vdso: add FORCE to the build rule of %.so
arch:sparc:kernel/uprobes.c : Remove duplicate header
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Rename the sparc documentation files to ReST, add an
index for them and adjust in order to produce a nice html
output via the Sphinx build system.
There is an except from a document under oradax dir.
It doesn't seem to make much sense to convert this one
to ReST, so let's add it as an included document.
At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk framework updates from Stephen Boyd:
"We have a couple new features and changes in the core clk framework
this time around because we've finally gotten around to fixing some
long standing issues. There's still work to do though, so this pull
request is largely laying down the foundation for all the driver
changes to come in the next merge window.
The first problem we're alleviating is how parents of clks are
specified. With the new method, we should see lots of drivers migrate
away from the current design of string comparisons on the entire clk
tree to a more direct method where they can use clk_hw pointers or
more localized names specified in DT or via clkdev. This should reduce
our reliance on string comparisons for all the topology description
logic that we've been using for years and hopefully speed some things
up while avoiding problems we have with generating clk names.
Beyond that we also got rid of the CLK_IS_BASIC flag because it wasn't
really helping anyone and we introduced big-endian versions of the
basic clk types so that we can get rid of clk_{readl,writel}(). Both
of these are things that driver developers have tried to use over the
years that I typically bat away during code reviews because they're
not useful. It's great to see these two things go away so maintainers
can save time not worrying about these things.
On the driver side we got the usual collection of new SoC support and
non-critical fixes and updates to existing code. The big topics that
stand out are the new driver support for Mediatek MT8183 and MT8516
SoCs, Amlogic Meson8b and G12a SoCs, and the SiFive FU540 SoC. The
other patches in the driver pile are mostly fixes for things that are
being used for the first time or additions for clks that couldn't be
tested before because there wasn't a consumer driver that exercised
them. Details are below and also in the sub-maintainer tags.
Core:
- Remove clk_readl() and introduce BE versions of basic clk types
- Rewrite how clk parents can be specified to allow DT/clkdev lookups
- Removal of the CLK_IS_BASIC clk flag
- Framework documentation updates and fixes
New Drivers:
- Support for STM32F769
- AT91 sam9x60 PMC support
- SiFive FU540 PRCI and PLL support
- Qualcomm QCS404 CDSP clk support
- Qualcomm QCS404 Turing clk support
- Mediatek MT8183 clock support
- Mediatek MT8516 clock support
- Milbeaut M10V clk controller support
- Support for Cirrus Logic Lochnagar clks
Updates:
- Rework AT91 sckc DT bindings
- Fix slow RC oscillator issue on sama5d3
- Mark UFS clk as critical on Hi-Silicon hi3660 SoCs
- Various static analysis fixes/finds and const markings
- Video Engine (ECLK) support on Aspeed SoCs
- Xilinx ZynqMP Versal platform support
- Convert Xilinx ZynqMP driver to be struct oriented
- Fixes for Rockchip rk3328 and rk3288 SoCs
- Sub-type for Rockchip SoCs where mux and divider aren't a single register
- Remove SNVS clock from i.MX7UPL clock driver and bindings
- Improve i.MX5 clock driver for i.MX50 support
- Addition of ADC clock definition for Exynos 5410 SoC (Odroid XU)
- Export a new clock for the MBUS controller on the A13
- Allwinner H6 fixes to support a finer clocking of the video and VPU engines
- Add g12a support in the Amlogic axg audio clock controller
- Add missing PCI USB clock on Rensas RZ/N1
- Add Z2 (Cortex-A53) clocks on Rensas R-Car E3 and RZ/G2E
- A new helper DIV64_U64_ROUND_CLOSEST() in <linux/math64.h>
- VPU and Video Decoder clocks on Amlogic Meson8b
- Finally remove the wrong ABP Meson8b clock id
- Add Video Decoder, PCIe PLL, and CPU Clocks on Amlogic G12A
- Re-expose SAR_ADC_SEL and CTS_OSCIN on Amlogic G12A AO clock controller
- Un-expose some Amlogic AXG-Audio input clocks IDs"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (172 commits)
clk: Cache core in clk_fetch_parent_index() without names
clk: imx: correct pfdv2 gate_bit/vld_bit operations
clk: sifive: add a driver for the SiFive FU540 PRCI IP block
clk: analogbits: add Wide-Range PLL library
clk: imx: clk-pllv3: mark expected switch fall-throughs
clk: imx8mq: Add dsi_ipg_div
clk: imx: pllv4: add fractional-N pll support
clk: sunxi-ng: Use the correct style for SPDX License Identifier
clk: sprd: Use the correct style for SPDX License Identifier
clk: renesas: Use the correct style for SPDX License Identifier
clk: qcom: Use the correct style for SPDX License Identifier
clk: davinci: Use the correct style for SPDX License Identifier
clk: actions: Use the correct style for SPDX License Identifier
clk: imx: keep uart clock on during system boot
clk: imx: correct i.MX7D AV PLL num/denom offset
dt-bindings: clk: add documentation for the SiFive PRCI driver
clk: stm32mp1: Add ddrperfm clock
clk: Remove CLK_IS_BASIC clk flag
clock: milbeaut: Add Milbeaut M10V clock controller
dt-bindings: clock: milbeaut: add Milbeaut clock description
...
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- Rewrite how clk parents can be specified to be DT/clkdev based instead
of just string based
* clk-parent-rewrite-1:
clk: Cache core in clk_fetch_parent_index() without names
clk: fixed-factor: Initialize clk_init_data on stack
clk: fixed-factor: Let clk framework find parent
clk: Allow parents to be specified via clkspec index
clk: Look for parents with clkdev based clk_lookups
clk: Allow parents to be specified without string names
clk: Add of_clk_hw_register() API for early clk drivers
driver core: Let dev_of_node() accept a NULL dev
clk: Prepare for clk registration API that uses DT nodes
clkdev: Move clk creation outside of 'clocks_mutex'
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If a clk has specified parents via clk_hw pointers it won't specify the
globally unique names for the parents. Without the unique names, we
can't fallback to comparing them against the name of the 'parent'
pointer here. Therefore, do a pointer comparison against the clk_hw
pointers too and cache the clk_core structure if they match. This fixes
parent lookup code for clks that only specify clk_hw pointers and
nothing else, like muxes that are purely inside a clk controller.
Similarly, if the parent pointer isn't cached after trying to match
clk_core or clk_hw pointers, lookup the pointer from DT or via clkdev
lookups instead of relying purely on the globally unique clk name match.
This should allow us to move away from having to specify global names
for clk parents entirely.
While we're in the area, add some comments so it's clearer what's going
on. The if statements don't lend themselves to much clarity in their raw
form.
Fixes: fc0c209c147f ("clk: Allow parents to be specified without string names")
Reported-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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This structure can be full of junk from the stack if we don't initialize
it. The clk framework tests clk_init_data::parent_names for non-NULL and
then considers that as the parent name pointer, but if it's full of junk
then we'll try to deref a bad pointer and oops the system. Let's
initialize the structure so that only clk_init_data::parent_names or
clk_init_data::parent_data is set, and not both.
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Tony Lindgren <tony@atomide.com>
Fixes: ecbf3f1795fd ("clk: fixed-factor: Let clk framework find parent")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Convert this driver to a more modern way of specifying parents now that
we have a way to specify clk parents by DT index. This lets us nicely
avoid a problem where a parent clk name isn't know because the parent
clk hasn't been registered yet.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Some clk providers are simple DT nodes that only have a 'clocks'
property without having an associated 'clock-names' property. In these
cases, we want to let these clk providers point to their parent clks
without having to dereference the 'clocks' property at probe time to
figure out the parent's globally unique clk name. Let's add an 'index'
property to the parent_data structure so that clk providers can indicate
that their parent is a particular index in the 'clocks' DT property.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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In addition to looking for DT based parents, support clkdev based
clk_lookups. This should allow non-DT based clk drivers to participate
in the parent lookup process.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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The common clk framework is lacking in ability to describe the clk
topology without specifying strings for every possible parent-child
link. There are a few drawbacks to the current approach:
1) String comparisons are used for everything, including describing
topologies that are 'local' to a single clock controller.
2) clk providers (e.g. i2c clk drivers) need to create globally unique
clk names to avoid collisions in the clk namespace, leading to awkward
name generation code in various clk drivers.
3) DT bindings may not fully describe the clk topology and linkages
between clk controllers because drivers can easily rely on globally unique
strings to describe connections between clks.
This leads to confusing DT bindings, complicated clk name generation
code, and inefficient string comparisons during clk registration just so
that the clk framework can detect the topology of the clk tree.
Furthermore, some drivers call clk_get() and then __clk_get_name() to
extract the globally unique clk name just so they can specify the parent
of the clk they're registering. We have of_clk_parent_fill() but that
mostly only works for single clks registered from a DT node, which isn't
the norm. Let's simplify this all by introducing two new ways of
specifying clk parents.
The first method is an array of pointers to clk_hw structures
corresponding to the parents at that index. This works for clks that are
registered when we have access to all the clk_hw pointers for the
parents.
The second method is a mix of clk_hw pointers and strings of local and
global parent clk names. If the .fw_name member of the map is set we'll
look for that clk by performing a DT based lookup of the device the clk
is registered with and the .name specified in the map. If that fails,
we'll fallback to the .name member and perform a global clk name lookup
like we've always done before.
Using either one of these new methods is entirely optional. Existing
drivers will continue to work, and they can migrate to this new approach
as they see fit. Eventually, we'll want to get rid of the 'parent_names'
array in struct clk_init_data and use one of these new methods instead.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Rob Herring <robh@kernel.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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In some circumstances drivers register clks early and don't have access
to a struct device because the device model isn't initialized yet. Add
an API to let drivers register clks associated with a struct device_node
so that these drivers can participate in getting parent clks through DT.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Rob Herring <robh@kernel.org>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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