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Sparse reports that the synopsis of nfsd_file_put_local() does not
match its kdoc comment. Introduced by commit c25a89770d1f ("nfs_localio:
change nfsd_file_put_local() to take a pointer to __rcu pointer") .
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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trace_nfsd_ctl_maxconn() was removed by commit a4b853f183a1
("sunrpc: remove all connection limit configuration") but did not
remove the event.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Event nfsd_file_gc_recent was added by commit 64912122a4f8 ("nfsd:
filecache: introduce NFSD_FILE_RECENT") but never used.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Events nfsd_file_lru_add_disposed and nfsd_file_lru_del_disposed
were added by commit 4a0e73e635e3 ("NFSD: Leave open files out of
the filecache LRU") but they were never used.
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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trace_nfsd_file_unhash_and_queue() was removed by commit ac3a2585f018
("nfsd: rework refcounting in filecache").
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Closes: https://lore.kernel.org/linux-nfs/5ccae2f9-1560-4ac5-b506-b235ed4e4f4f@oracle.com/T/#t
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Update error codes in decoding functions of block and scsi layout
drivers to match the core nfsd code. NFS4ERR_EINVAL means that the
server was able to decode the request, but the decoded values are
invalid. Use NFS4ERR_BADXDR instead to indicate a decoding error.
And ENOMEM is changed to nfs code NFS4ERR_DELAY.
Signed-off-by: Sergey Bashirov <sergeybashirov@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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This limit has always been a sanity check; in nearly all cases a
large COMPOUND is a sign of a malfunctioning client. The only real
limit on COMPOUND size and complexity is the size of NFSD's send
and receive buffers.
However, there are a few cases where a large COMPOUND is sane. For
example, when a client implementation wants to walk down a long file
pathname in a single round trip.
A small risk is that now a client can construct a COMPOUND request
that can keep a single nfsd thread busy for quite some time.
Suggested-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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To enable NFSD to handle NFSv4 COMPOUNDs of unrestricted size,
resize the array in struct nfsd_genl_rqstp so it saves only up to
16 operations per COMPOUND.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Clean up: A function parameter called "rqstp" typically refers to an
object of type "struct svc_rqst", so it's confusing when such an
parameter refers to a different struct type with field names that are
very similar to svc_rqst.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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When the client sends an OPEN with claim type CLAIM_DELEG_CUR_FH or
CLAIM_DELEGATION_CUR, the delegation stateid and the file handle
must belong to the same file, otherwise return NFS4ERR_INVAL.
Note that RFC8881, section 8.2.4, mandates the server to return
NFS4ERR_BAD_STATEID if the selected table entry does not match the
current filehandle. However returning NFS4ERR_BAD_STATEID in the
OPEN causes the client to retry the operation and therefor get the
client into a loop. To avoid this situation we return NFS4ERR_INVAL
instead.
Reported-by: Petro Pavlov <petro.pavlov@vastdata.com>
Fixes: c44c5eeb2c02 ("[PATCH] nfsd4: add open state code for CLAIM_DELEGATE_CUR")
Cc: stable@vger.kernel.org
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Lei Lu recently reported that nfsd4_setclientid_confirm() did not check
the return value from get_client_locked(). a SETCLIENTID_CONFIRM could
race with a confirmed client expiring and fail to get a reference. That
could later lead to a UAF.
Fix this by getting a reference early in the case where there is an
extant confirmed client. If that fails then treat it as if there were no
confirmed client found at all.
In the case where the unconfirmed client is expiring, just fail and
return the result from get_client_locked().
Reported-by: lei lu <llfamsec@gmail.com>
Closes: https://lore.kernel.org/linux-nfs/CAEBF3_b=UvqzNKdnfD_52L05Mqrqui9vZ2eFamgAbV0WG+FNWQ@mail.gmail.com/
Fixes: d20c11d86d8f ("nfsd: Protect session creation and client confirm using client_lock")
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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The valid values for ek_fsidtype are actually 0-7 so it's better to
change the type to u8. Also using kstrtou8() to relpace simple_strtoul(),
kstrtou8() is safer and more suitable for u8.
Suggested-by: NeilBrown <neil@brown.name>
Signed-off-by: Su Hui <suhui@nfschina.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Convert the svc_wake_up tracepoint into svc_pool_thread_event class.
Have it also record the pool id, and add new tracepoints for when the
thread is already running and for when there are no idle threads.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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csum_partial_copy_to_xdr is only used inside the sunrpc module, so
remove the export.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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csum_partial_copy_to_xdr can handle a checksumming and non-checksumming
case and implements this using a callback, which leads to a lot of
boilerplate code and indirect calls in the fast path.
Switch to storing a need_checksum flag in struct xdr_skb_reader instead
to remove the indirect call and simplify the code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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The rqst argument to xdr_init_encode_pages is set to NULL by all callers,
and pages is always set to buf->pages. Remove the two arguments and
hardcode the assignments.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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When a write delegation is returned, check if read access was added
to nfs4_file when client opens file with WRONLY, and release it.
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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RFC8881, section 9.1.2 says:
"In the case of READ, the server may perform the corresponding
check on the access mode, or it may choose to allow READ for
OPEN4_SHARE_ACCESS_WRITE, to accommodate clients whose WRITE
implementation may unavoidably do reads (e.g., due to buffer cache
constraints)."
and in section 10.4.1:
"Similarly, when closing a file opened for OPEN4_SHARE_ACCESS_WRITE/
OPEN4_SHARE_ACCESS_BOTH and if an OPEN_DELEGATE_WRITE delegation
is in effect"
This patch allows READ using write delegation stateid granted on OPENs
with OPEN4_SHARE_ACCESS_WRITE only, to accommodate clients whose WRITE
implementation may unavoidably do (e.g., due to buffer cache
constraints).
For write delegation granted for OPEN with OPEN4_SHARE_ACCESS_WRITE
a new nfsd_file and a struct file are allocated to use for reads.
The nfsd_file is freed when the file is closed by release_all_access.
Suggested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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An abort op was introduced to allow its caller to invoke it within a lock
in the caller's function. On the other hand, _iommufd_object_alloc_ucmd()
would invoke the abort op in iommufd_object_abort_and_destroy() that must
be outside the caller's lock. So, these two cannot work together.
Add a validation in the _iommufd_object_alloc_ucmd(). Pick -EOPNOTSUPP to
reject the function call, indicating that the object allocator is buggy.
Link: https://patch.msgid.link/r/20250710202354.1658511-1-nicolinc@nvidia.com
Suggested-by: Xu Yilun <yilun.xu@linux.intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Xu Yilun <yilun.xu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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We only need to support version 1, 5 and 7.
Remove versions 2, 3, 4 and 6.
Reviewed-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.10d91f675505.Idd3a6da568261ee738918f290168a2ddaa87196b@changeid
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This are not used in any of our devices. Remove it.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.89156be9bc7f.I5ff5c1055eaf4fef9bd73233ea4d95504634ceed@changeid
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These are not used in any of our devices. Remove them.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.dd784443be53.I4ff3b2392294f5df2625a71e2deee3364e9708f6@changeid
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iwlmld was planned to be used for HR/GF, which has versions 5/6,
but it was decided at the end to use iwlmvm for HR/GF, so iwlmld only
needs to support version 8.
Remove versions 5 and 6 support.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.9c64bfbb16cb.I109bee4d4bf455cbffbb8d2340023338bcab886d@changeid
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when BT is ON"
Due to a hw bug, this feature won't be enabled. Revert its
implementation.
This reverts commit 37808a3788fd ("wifi: iwlwifi: mld: allow EMLSR with
2.4 GHz when BT is ON")
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.57755ac3f39d.I63ae0ee3e6cdc9b11175ad15927aaad3b8f8f47a@changeid
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with bt on"
Due to a hw bug, this feature won't be enabled. Revert its tests.
This reverts commit f7cc80b871ee ("wifi: iwlwifi: mld: add kunit test
for emlsr with bt on")
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.5fdf77497ad2.I1160f1dcff734cb42baa8fbf8aac121a1a24a4c5@changeid
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The firmware provides the station id, use it since it makes our lives
easier. No need to assume we have a single BSS vif, and look up the
station id to whom the OMI was sent.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.7d2cd878855f.I8625ebb2c4e1fb484aafd16a07549f2eeb506e08@changeid
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iwlmld was planned to be used for HR/GF, which has version 4,
but it was decided at the end to use iwlmvm for HR/GF, so iwlmld only
needs to support version 5.
Remove version 4 support.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.faeb1e6bac2a.I1a29b16f59b67c103d1f91dedee27e04cd7fdfdd@changeid
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iwl_reduce_tx_power_cmd is not used anywhere, remove it.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.313285673570.I87c646f8b9b83d63c7c6c293cc5d454c32d852c2@changeid
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iwlmld was planned to be used for HR, which has version 9,
but it was decided at the end to use iwlmvm for HR, so iwlmld only
needs to support version 10.
Remove version 9 support.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.aeeb617abfae.I05101972506180644c42be5096c1b2afa36c625a@changeid
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These versions are no longer used in any of our devices. Remove them.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.05fabbda0a2f.Id55eeb4f337eb52163621ca202d97a3539bf3f53@changeid
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Implement a dump handler in the iwl_mvm operation mode to
collect firmware dump upon trigger from trans layer.
Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.366fc31fd551.I976cb17edd85a461043c7a4c7f4895bfaec9174a@changeid
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When connected to an AP, the PHY will typically be tuned to
a higher bandwidth than the beacons are transmitted on, as
they are normally only transmitted on 20 MHz. This can mean
that another STA is simultaneously transmitting on another
channel of the higher bandwidth, and apparently this energy
may be taken into account by the PHY, resulting in elevated
energy readings.
To work around this, track the firmware's corrected beacon
energy data and replace the RSSI in beacons by that. The
replacement happens for all beacons received in the context
of the current MAC or link (depending on FW version), in
which case the filters will drop all else. For a scan, which
is only tuning to 20 MHz channels, the MAC/link ID will be
one that isn't found (the AUX ID 4), and no correction will
be done (nor is it needed.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.324bfe7027ff.I160f947e7aab30e0110a7019ed46186e57c3de14@changeid
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Since the iwlmvm driver now only supports pre-MLO devices,
we no longer need to maintain an extra explicit link ID;
valid MAC IDs and link IDs are both in the range 0-3 and
the driver always has a 1:1 MAC/link correspondence. Thus,
simply use the MAC ID as the link ID as well.
This simplifies some further work because on RX the ID is
given but there is some confusion about which versions of
the firmware report MAC and which report link ID.
While at it, clarify iwl_mvm_handle_missed_beacons_notif()
code a bit so it doesn't look like an invalid vif pointer
is being used.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.005aa5fe34fe.Ib0c1187453f46ce49dc0f9f58907ee21f5b52634@changeid
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EHT capable devices will only use iwlmld. So we can remove EMLSR code
from iwlmvm.
As part of removal, remove IWL_MVM_ESR_EXIT_FAIL_ENTRY EMLSR state.
Signed-off-by: Pagadala Yesu Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250711183056.a69dc9c6ba49.I7f9fbc1f954b4c118625a4b8d51c72f3c84936da@changeid
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There is no need to maintain PF ABI version on per-GT level.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-8-michal.wajdeczko@intel.com
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While some VF/PF relay actions must be handled on the GT level,
like query for runtime registers, it was clarified by the arch
team that initial version negotiation can be done by the VF just
once, by using any available GuC/GT.
Move handling of the VF/PF ABI version negotiation on the PF side
from the GT level functions to the device level functions.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-7-michal.wajdeczko@intel.com
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We already have function to print summary about VFs, but we missed
to add debugfs attribute to make it visible. Do it now.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-6-michal.wajdeczko@intel.com
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Instead of checking for not being a media type GT provide a small
helper to explicitly express our intentions.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-5-michal.wajdeczko@intel.com
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Instead of looking at the tile->id member provide a small helper
to explicitly express our intentions.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-4-michal.wajdeczko@intel.com
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We plan to add more PF and VF types and mixing them in a single
file is not desired. Move them out to new dedicated files.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-3-michal.wajdeczko@intel.com
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Commit ec62d37d2c0d("drm/panthor: Fix the fast-reset logic") did away
with the only reference to panthor_vm_flush_all(), so let's get rid
of the orphaned definition.
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250711154557.739326-1-adrian.larumbe@collabora.com
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Same as sha256 and sha512: Use the state format that the generic partial
block handling code produces, as requested by Herbert, even though this
is applicable only to legacy drivers.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-7-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Like I did for crypto/sha512.c, rework crypto/sha1_generic.c (renamed to
crypto/sha1.c) to simply wrap the normal library functions instead of
accessing the low-level block function directly. Also add support for
HMAC-SHA1, again just wrapping the library functions.
Since the replacement crypto_shash algorithms are implemented using the
(potentially arch-optimized) library functions, give them driver names
ending with "-lib" rather than "-generic". Update crypto/testmgr.c and
an odd driver to take this change in driver name into account.
Note: to see the diff from crypto/sha1_generic.c to crypto/sha1.c, view
this commit with 'git show -M10'.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-6-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Add HMAC support to the SHA-1 library, again following what was done for
SHA-2. Besides providing the basis for a more streamlined "hmac(sha1)"
shash, this will also be useful for multiple in-kernel users such as
net/sctp/auth.c, net/ipv6/seg6_hmac.c, and
security/keys/trusted-keys/trusted_tpm1.c. Those are currently using
crypto_shash, but using the library functions would be much simpler.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-5-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Add a library interface for SHA-1, following the SHA-2 one. As was the
case with SHA-2, this will be useful for various in-kernel users. The
crypto_shash interface will be reimplemented on top of it as well.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250712232329.818226-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel into devel
intel-pinctrl for v6.16-1
* Use new GPIO line value setter callbacks (Bartosz Golaszewski)
* Add missed export.h to the main driver
The following is an automated git shortlog grouped by driver:
baytrail:
- use new GPIO line value setter callbacks
cherryview:
- use new GPIO line value setter callbacks
intel:
- fix build warnings about export.h
- use new GPIO line value setter callbacks
lynxpoint:
- use new GPIO line value setter callbacks
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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There is no need to keep PF and VF data fields fully separate
since we can be only in one mode at the time. Move them into
a anonymous union to save few bytes.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://lore.kernel.org/r/20250713103625.1964-2-michal.wajdeczko@intel.com
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Add Clément Le Goffic as STM32 HDP maintainer.
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/20250711-hdp-upstream-v7-3-faeecf7aaee1@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch introduce the driver for the Hardware Debug Port available on
STM32MP platforms. The HDP allows the observation of internal SoC
signals by using multiplexers. Each HDP port can provide up to 16
internal signals (one of them can be software controlled as a GPO).
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/20250711-hdp-upstream-v7-2-faeecf7aaee1@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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'HDP' stands for Hardware Debug Port, it is an hardware block in
STMicrolectronics' MPUs that let the user decide which internal SoC's
signal to observe.
It provides 8 ports and for each port there is up to 16 different
signals that can be output.
Signals are different for each MPU.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/20250711-hdp-upstream-v7-1-faeecf7aaee1@foss.st.com
[Fixed up Clement's new email address]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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