The PCI core's pci_scan_bridge_extend() contains convoluted logic specific
to setting up bus numbers for legacy CardBus bridges. Extract the CardBus
specific part out into setup-cardbus.c to make the core code cleaner and
allow omitting CardBus bridge support from modern systems.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-24-ilpo.jarvinen@linux.intel.com
pci_scan_bridge_extend() validates bus numbers but upcoming changes that
separate CardBus code into own function need to call that the same
validation.
Thus, add pbus_validate_busn for validating the Bus Numbers.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-23-ilpo.jarvinen@linux.intel.com
uapi/linux/pci_regs.h defines Primary/Secondary/Subordinate Bus Numbers
and Secondary Latency Timer (PCIe r7.0, sec. 7.5.1.3) as byte register
offsets, but in practice the code may read/write the entire dword. In the
lack of #defines to handle the dword fields, the code ends up using
literals which are not as easy to read.
Add dword field masks for the Bus Number and Secondary Latency Timer
fields and use them in probe.c.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[bhelgaas: squash new #defines and uses together]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-21-ilpo.jarvinen@linux.intel.com
Link: https://patch.msgid.link/20251219174036.16738-22-ilpo.jarvinen@linux.intel.com
Using sprintf() is deprecated as it does not do proper size checks. While
the code in pci_scan_bridge_extend() is safe with respect to overwriting
the destination buffer, use scnprintf() to not promote use of a deprecated
sprint() (and allow eventually removing it from the kernel).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-20-ilpo.jarvinen@linux.intel.com
PCI bridge window setup code includes special code to handle CardBus
bridges. CardBus has long since fallen out of favor and modern systems have
no use for it.
Move CardBus setup code to its own file and use existing CONFIG_CARDBUS to
decide whether it should be built or not.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-18-ilpo.jarvinen@linux.intel.com
setup-bus.c has static functions for handling struct pci_dev_resource
related operation which have no prefixes. Add 'pci' prefixes to those
function names as add_to_list() will be needed in another file by an
upcoming change.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-17-ilpo.jarvinen@linux.intel.com
Many places in the resource fitting and assignment algorithm want to
know if the resource is assigned into the resource tree or not. Convert
open-coded ->parent checks to use resource_assigned().
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-16-ilpo.jarvinen@linux.intel.com
The caller may hold a const struct resource which will trigger an
unnecessary warning when calling resource_assigned() as it will not
modify res in any way.
Mark resource_assigned()'s struct resource *res parameter const to
avoid the compiler warning.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-15-ilpo.jarvinen@linux.intel.com
The resource loop in pbus_size_mem() handles optional resources that are
either fully optional (SR-IOV and disabled Expansion ROMs) or bridge
windows that may be optional only for a part. The logic is a little
inconsistent when it comes to a bridge window that has only optional
children resources as it would be more natural to treat it similar to any
fully optional resource. As resource size should be zero in that case, it
shouldn't cause any bugs but it still seems useful to address the
inconsistency.
Place the optional size related code of pbus_size_mem() into
pbus_mem_size_optional() and add a check in pci_resource_is_optional()
for entirely optional bridge windows. Reorder the logic inside
pbus_mem_size_optional() such that fully optional resources are handled
the same irrespective of whether the resource is a bridge window or
not.
Additional motivation for this are the upcoming changes that add complexity
to the optional sizing logic due to Resizable BAR awareness. The extra
logic would exceed any reasonable indentation level if the optional sizing
code is kept within the loop body.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-14-ilpo.jarvinen@linux.intel.com
Check for invalid align before any bridge window sizing actions in
pbus_size_mem() to avoid need to roll back any sizing calculations.
Placing the check earlier will make it easier to add more optional size
related calculations at where the SR-IOV logic currently is in
pbus_size_mem().
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-13-ilpo.jarvinen@linux.intel.com
PCI resource fitting and assignment is complicated to track because it
performs many actions without any logging. One of these is resource reset
(zeroing the resource) and the restore during the multi-pass resource
fitting algorithm.
Resource reset does not play well with the other PCI code if the code later
wants to reattempt assignment of that resource. Knowing that a resource was
left in the reset state without a pairing restore is useful for
understanding issues that show up as resource assignment failures.
Add pci_dbg() to both reset and restore to be better able to track what's
going on within the resource fitting algorithm.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-12-ilpo.jarvinen@linux.intel.com
__assign_resources_sorted() calls get_res_add_size() and
get_res_add_align(), each walking through the realloc_head list to
relocate the corresponding pci_dev_resource entry.
Fetch the pci_dev_resource entry into a local variable to avoid double
walk.
In addition, reverse logic to reduce indentation level.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-10-ilpo.jarvinen@linux.intel.com
reassign_resources_sorted() contains a search loop for a particular
resource in the head list. res_to_dev_res() already implements the same
search so use it instead.
Drop unused found_match and dev_res variables.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-9-ilpo.jarvinen@linux.intel.com
pbus_size_mem() inputs type and calculates bridge window resource within.
Its caller (__pci_bus_size_bridges()) also has to look up the prefetchable
window to determine if it exists or not to decide whether to call
pbus_size_mem() twice or once.
Change the interface such that the caller is responsible in providing the
bridge window resource. Passing the resource directly avoids another lookup
for the prefetchable window inside pbus_size_mem().
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-8-ilpo.jarvinen@linux.intel.com
pbus_size_mem() and calculate_memsize() input both min_size and add_size.
They are given the same value if realloc_head is NULL and min_size is 0
otherwise. Both are used in calculate_memsize() to enforce a lower bound to
the size.
The interface between __pci_bus_size_bridges() and the forementioned
functions can be simplied by pushing the realloc check into
pbus_size_mem().
There are only two possible cases:
1) when calculating size0, add_size parameter given to
calculate_memsize() is always 0 which implies only min_size
matters.
2) when calculating size1, realloc_head is not NULL which implies
min_size=0 so only add_size matters.
Drop min_size parameter from pbus_size_mem() and check realloc_head when
calling calculate_memsize(). Drop add_size from calculate_memsize() and use
only min_size within max() to enforce the lower bound.
calculate_iosize() is a bit more complicated than calculate_memsize() and
is therefore left as is, but pbus_size_io() can still input only min_size
similar to pbus_size_mem().
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-7-ilpo.jarvinen@linux.intel.com
calculate_memsize() applies lower bound to the resource size before
aligning the resource size making it impossible to shrink bridge window
resources. I've not found any justification for this lower bound and
nothing indicated it was to work around some HW issue.
Prior to the commit 3baeae3603 ("PCI: Use pci_release_resource() instead
of release_resource()"), releasing a bridge window during BAR resize
resulted in clearing start and end address of the resource. Clearing
addresses destroys the resource size as a side-effect, therefore nullifying
the effect of the old size lower bound.
After the commit 3baeae3603 ("PCI: Use pci_release_resource() instead of
release_resource()"), BAR resize uses the aligned old size, which results
in exceeding what fits into the parent window in some cases:
xe 0030:03:00.0: [drm] Attempting to resize bar from 256MiB -> 16384MiB
xe 0030:03:00.0: BAR 0 [mem 0x620c000000000-0x620c000ffffff 64bit]: releasing
xe 0030:03:00.0: BAR 2 [mem 0x6200000000000-0x620000fffffff 64bit pref]: releasing
pci 0030:02:01.0: bridge window [mem 0x6200000000000-0x620001fffffff 64bit pref]: releasing
pci 0030:01:00.0: bridge window [mem 0x6200000000000-0x6203fbff0ffff 64bit pref]: releasing
pci 0030:00:00.0: bridge window [mem 0x6200000000000-0x6203fbff0ffff 64bit pref]: was not released (still contains assigned resources)
pci 0030:00:00.0: Assigned bridge window [mem 0x6200000000000-0x6203fbff0ffff 64bit pref] to [bus 01-04] free space at [mem 0x6200400000000-0x62007ffffffff 64bit pref]
pci 0030:00:00.0: Assigned bridge window [mem 0x6200000000000-0x6203fbff0ffff 64bit pref] to [bus 01-04] cannot fit 0x4000000000 required for 0030:01:00.0 bridging to [bus 02-04]
The old size of 0x6200000000000-0x6203fbff0ffff resource was used as the
lower bound which results in 0x4000000000 size request due to alignment.
That exceeds what can fit into the parent window.
Since the lower bound never even was enforced fully because the resource
addresses were cleared when the bridge window is released, remove the
old_size lower bound entirely and trust the calculated bridge window size
is enough.
This same problem may occur on io window side but seems less likely to
cause issues due to general difference in alignment. Removing the lower
bound may have other unforeseen consequences in case of io window so it's
better to leave it as -next material if no problem is reported related to
io window sizing (BAR resize shouldn't touch io windows anyway).
Fixes: 3baeae3603 ("PCI: Use pci_release_resource() instead of release_resource()")
Reported-by: Simon Richter <Simon.Richter@hogyros.de>
Link: https://lore.kernel.org/r/f9a8c975-f5d3-4dd2-988e-4371a1433a60@hogyros.de/
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-6-ilpo.jarvinen@linux.intel.com
While debugging a PCI resource allocation issue, the resources for many
nested bridges and endpoints got flattened in /proc/iomem by
MAX_IORES_LEVEL that is set to 5. This made the iomem output hard to
read as the visual hierarchy cues were lost.
Increase MAX_IORES_LEVEL to 8 to avoid flattening PCI topologies with
nested bridges so aggressively (the case in the Link has the deepest
resource at level 7 so 8 looks a reasonable limit).
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220775
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20251219174036.16738-5-ilpo.jarvinen@linux.intel.com
New way to calculate the bridge window head alignment produces tight-fit,
that is, it does not leave any gaps between the resources. Similarly,
relaxed tail alignment does not leave extra tail room.
Start to use bridge window calculation that does not over-estimate the size
of the required window.
pbus_upstream_space_available() can be removed.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Malte Schröder <malte+lkml@tnxip.de>
Link: https://patch.msgid.link/20251219174036.16738-4-ilpo.jarvinen@linux.intel.com
The calculation of bridge window head alignment is done by
calculate_mem_align() [*]. With the default bridge window alignment, it
is used for both head and tail alignment.
The selected head alignment does not always result in tight-fitting
resources (gap at d4f00000-d4ffffff):
d4800000-dbffffff : PCI Bus 0000:06
d4800000-d48fffff : PCI Bus 0000:07
d4800000-d4803fff : 0000:07:00.0
d4800000-d4803fff : nvme
d4900000-d49fffff : PCI Bus 0000:0a
d4900000-d490ffff : 0000:0a:00.0
d4900000-d490ffff : r8169
d4910000-d4913fff : 0000:0a:00.0
d4a00000-d4cfffff : PCI Bus 0000:0b
d4a00000-d4bfffff : 0000:0b:00.0
d4a00000-d4bfffff : 0000:0b:00.0
d4c00000-d4c07fff : 0000:0b:00.0
d4d00000-d4dfffff : PCI Bus 0000:15
d4d00000-d4d07fff : 0000:15:00.0
d4d00000-d4d07fff : xhci-hcd
d4e00000-d4efffff : PCI Bus 0000:16
d4e00000-d4e7ffff : 0000:16:00.0
d4e80000-d4e803ff : 0000:16:00.0
d4e80000-d4e803ff : ahci
d5000000-dbffffff : PCI Bus 0000:0c
This has not caused problems (for years) with the default bridge window
tail alignment that grossly over-estimates the required tail alignment
leaving more tail room than necessary. With the introduction of relaxed
tail alignment that leaves no extra tail room whatsoever, any gaps will
immediately turn into assignment failures.
Introduce head alignment calculation that ensures no gaps are left and
apply the new approach when using relaxed alignment. We may want to
consider using it for the normal alignment eventually, but as the first
step, solve only the problem with the relaxed tail alignment.
([*] I don't understand the algorithm in calculate_mem_align().)
Link: https://git.kernel.org/history/history/c/5d0a8965aea9 ("[PATCH] 2.5.14: New PCI allocation code (alpha, arm, parisc) [2/2]")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220775
Reported-by: Malte Schröder <malte+lkml@tnxip.de>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Malte Schröder <malte+lkml@tnxip.de>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251219174036.16738-3-ilpo.jarvinen@linux.intel.com
pbus_size_mem() has two alignments, one for required resources in min_align
and another in add_align that takes account optional resources.
The add_align is applied to the bridge window through the realloc_head
list. It can happen, however, that add_align is larger than min_align but
calculated size1 and size0 are equal due to extra tailroom (e.g., hotplug
reservation, tail alignment), and therefore no entry is created to the
realloc_head list. Without the bridge appearing in the realloc head,
add_align is lost when pbus_size_mem() returns.
The problem is visible in this log for 0000:05:00.0 which lacks
add_size ... add_align ... line that would indicate it was added into
the realloc_head list:
pci 0000:05:00.0: PCI bridge to [bus 06-16]
...
pci 0000:06:00.0: bridge window [mem 0x00100000-0x001fffff] to [bus 07] requires relaxed alignment rules
pci 0000:06:06.0: bridge window [mem 0x00100000-0x001fffff] to [bus 0a] requires relaxed alignment rules
pci 0000:06:07.0: bridge window [mem 0x00100000-0x003fffff] to [bus 0b] requires relaxed alignment rules
pci 0000:06:08.0: bridge window [mem 0x00800000-0x00ffffff 64bit pref] to [bus 0c-14] requires relaxed alignment rules
pci 0000:06:08.0: bridge window [mem 0x01000000-0x057fffff] to [bus 0c-14] requires relaxed alignment rules
pci 0000:06:08.0: bridge window [mem 0x01000000-0x057fffff] to [bus 0c-14] requires relaxed alignment rules
pci 0000:06:08.0: bridge window [mem 0x01000000-0x057fffff] to [bus 0c-14] add_size 100000 add_align 1000000
pci 0000:06:0c.0: bridge window [mem 0x00100000-0x001fffff] to [bus 15] requires relaxed alignment rules
pci 0000:06:0d.0: bridge window [mem 0x00100000-0x001fffff] to [bus 16] requires relaxed alignment rules
pci 0000:06:0d.0: bridge window [mem 0x00100000-0x001fffff] to [bus 16] requires relaxed alignment rules
pci 0000:05:00.0: bridge window [mem 0xd4800000-0xd97fffff]: assigned
pci 0000:05:00.0: bridge window [mem 0x1060000000-0x10607fffff 64bit pref]: assigned
pci 0000:06:08.0: bridge window [mem size 0x04900000]: can't assign; no space
pci 0000:06:08.0: bridge window [mem size 0x04900000]: failed to assign
While this bug itself seems old, it has likely become more visible after
the relaxed tail alignment that does not grossly overestimate the size
needed for the bridge window.
Make sure add_align > min_align too results in adding an entry into the
realloc head list. In addition, add handling to the cases where add_size is
zero while only alignment differs.
Fixes: d74b9027a4 ("PCI: Consider additional PF's IOV BAR alignment in sizing and assigning")
Reported-by: Malte Schröder <malte+lkml@tnxip.de>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Malte Schröder <malte+lkml@tnxip.de>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251219174036.16738-2-ilpo.jarvinen@linux.intel.com
__pci_read_base() sets resource start and end addresses when resource
is larger than 4G but pci_bus_addr_t or resource_size_t are not capable
of representing 64-bit PCI addresses. This creates a problematic
resource that has non-zero flags but the start and end addresses do not
yield to resource size of 0 but 1.
Replace custom resource addresses setup with resource_set_range()
that correctly sets end address as -1 which results in resource_size()
returning 0.
For consistency, also use resource_set_range() in the other branch that
does size based resource setup.
Fixes: 23b13bc76f ("PCI: Fail safely if we can't handle BARs larger than 4GB")
Link: https://lore.kernel.org/all/20251207215359.28895-1-ansuelsmth@gmail.com/T/#m990492684913c5a158ff0e5fc90697d8ad95351b
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: stable@vger.kernel.org
Cc: Christian Marangi <ansuelsmth@gmail.com>
Link: https://patch.msgid.link/20251208145654.5294-1-ilpo.jarvinen@linux.intel.com
The only core fix is in doc; all the others are in drivers, with the
biggest impacts in libsas being the rollback on error handling and in
ufs coming from a couple of error handling fixes, one causing a crash
if it's activated before scanning and the other fixing W-LUN
resumption.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"The only core fix is in doc; all the others are in drivers, with the
biggest impacts in libsas being the rollback on error handling and in
ufs coming from a couple of error handling fixes, one causing a crash
if it's activated before scanning and the other fixing W-LUN
resumption"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: qcom: Fix confusing cleanup.h syntax
scsi: libsas: Add rollback handling when an error occurs
scsi: device_handler: Return error pointer in scsi_dh_attached_handler_name()
scsi: ufs: core: Fix a deadlock in the frequency scaling code
scsi: ufs: core: Fix an error handler crash
scsi: Revert "scsi: libsas: Fix exp-attached device scan after probe failure scanned in again after probe failed"
scsi: ufs: core: Fix RPMB link error by reversing Kconfig dependencies
scsi: qla4xxx: Use time conversion macros
scsi: qla2xxx: Enable/disable IRQD_NO_BALANCING during reset
scsi: ipr: Enable/disable IRQD_NO_BALANCING during reset
scsi: imm: Fix use-after-free bug caused by unfinished delayed work
scsi: target: sbp: Remove KMSG_COMPONENT macro
scsi: core: Correct documentation for scsi_device_quiesce()
scsi: mpi3mr: Prevent duplicate SAS/SATA device entries in channel 1
scsi: target: Reset t_task_cdb pointer in error case
scsi: ufs: core: Fix EH failure after W-LUN resume error
client from Max, a fix that hardens osdmap parsing code from myself
(marked for stable) and a few assorted fixups.
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Merge tag 'ceph-for-6.19-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"We have a patch that adds an initial set of tracepoints to the MDS
client from Max, a fix that hardens osdmap parsing code from myself
(marked for stable) and a few assorted fixups"
* tag 'ceph-for-6.19-rc1' of https://github.com/ceph/ceph-client:
rbd: stop selecting CRC32, CRYPTO, and CRYPTO_AES
ceph: stop selecting CRC32, CRYPTO, and CRYPTO_AES
libceph: make decode_pool() more resilient against corrupted osdmaps
libceph: Amend checking to fix `make W=1` build breakage
ceph: Amend checking to fix `make W=1` build breakage
ceph: add trace points to the MDS client
libceph: fix log output race condition in OSD client
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'smp-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug fix from Ingo Molnar:
- Fix CPU hotplug callbacks to disable interrupts on UP kernels
* tag 'smp-urgent-2025-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu: Make atomic hotplug callbacks run with interrupts disabled on UP
individual changelogs for details.
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Merge tag 'mm-nonmm-stable-2025-12-11-11-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc updates from Andrew Morton:
"There are no significant series in this small merge. Please see the
individual changelogs for details"
[ Editor's note: it's mainly ocfs2 and a couple of random fixes ]
* tag 'mm-nonmm-stable-2025-12-11-11-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: memfd_luo: add CONFIG_SHMEM dependency
mm: shmem: avoid build warning for CONFIG_SHMEM=n
ocfs2: fix memory leak in ocfs2_merge_rec_left()
ocfs2: invalidate inode if i_mode is zero after block read
ocfs2: avoid -Wflex-array-member-not-at-end warning
ocfs2: convert remaining read-only checks to ocfs2_emergency_state
ocfs2: add ocfs2_emergency_state helper and apply to setattr
checkpatch: add uninitialized pointer with __free attribute check
args: fix documentation to reflect the correct numbers
ocfs2: fix kernel BUG in ocfs2_find_victim_chain
liveupdate: luo_core: fix redundant bound check in luo_ioctl()
ocfs2: validate inline xattr size and entry count in ocfs2_xattr_ibody_list
fs/fat: remove unnecessary wrapper fat_max_cache()
ocfs2: replace deprecated strcpy with strscpy
ocfs2: check tl_used after reading it from trancate log inode
liveupdate: luo_file: don't use invalid list iterator
- The 2 patch series "powerpc/pseries/cmm: two smaller fixes" from David
Hildenbrand fixes a couple of minor things in ppc land.
- The 4 patch series "Improve folio split related functions" from Zi Yan
provides some cleanups and minorish fixes in the folio splitting code.
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Merge tag 'mm-stable-2025-12-11-11-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- "powerpc/pseries/cmm: two smaller fixes" (David Hildenbrand)
fixes a couple of minor things in ppc land
- "Improve folio split related functions" (Zi Yan)
some cleanups and minorish fixes in the folio splitting code
* tag 'mm-stable-2025-12-11-11-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/damon/tests/core-kunit: avoid damos_test_commit stack warning
mm: vmscan: correct nr_requested tracing in scan_folios
MAINTAINERS: add idr core-api doc file to XARRAY
mm/hugetlb: fix incorrect error return from hugetlb_reserve_pages()
mm: fix CONFIG_STACK_GROWSUP typo in mm.h
mm/huge_memory: fix folio split stats counting
mm/huge_memory: make min_order_for_split() always return an order
mm/huge_memory: replace can_split_folio() with direct refcount calculation
mm/huge_memory: change folio_split_supported() to folio_check_splittable()
mm/sparse: fix sparse_vmemmap_init_nid_early definition without CONFIG_SPARSEMEM
powerpc/pseries/cmm: adjust BALLOON_MIGRATE when migrating pages
powerpc/pseries/cmm: call balloon_devinfo_init() also without CONFIG_BALLOON_COMPACTION
Brown paper bag time. This is a silly oversight where I missed to drop
the error condition checking to ensure we clean up on early error
returns. I have an internal unit testset coming up for this which will
catch all such issues going forward.
Reported-by: Chris Mason <clm@fb.com>
Reported-by: Jeff Layton <jlayton@kernel.org>
Fixes: 011703a9ac ("file: add FD_{ADD,PREPARE}()")
Signed-off-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 7bfe3b8ea6 ("Drivers: hv: Introduce mshv_vtl driver") added a
new generated header file for the offsets into the mshv_vtl_cpu_context
structure to be used by the low-level assembly code. But it didn't add
the .gitignore file to go with it, so 'git status' and friends will
mention it.
Let's add the gitignore file before somebody thinks that generated
header should be committed.
Fixes: 7bfe3b8ea6 ("Drivers: hv: Introduce mshv_vtl driver")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
core:
- revert dumb bo 8 byte alignment
amdgpu:
- SI fix
- DC reduce stack usage
- HDMI fixes
- VCN 4.0.5 fix
- DP MST fix
- DC memory allocation fix
amdkfd:
- SVM fix
- Trap handler fix
- VGPR fixes for GC 11.5
i915:
- Fix format string truncation warning
- FIx runtime PM reference during fbdev BO creation
panthor:
- fix UAF
renesas:
- fix sync flag handling
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Merge tag 'drm-next-2025-12-13' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"This is the weekly fixes for what is in next tree, mostly amdgpu and
some i915, panthor and a core revert.
core:
- revert dumb bo 8 byte alignment
amdgpu:
- SI fix
- DC reduce stack usage
- HDMI fixes
- VCN 4.0.5 fix
- DP MST fix
- DC memory allocation fix
amdkfd:
- SVM fix
- Trap handler fix
- VGPR fixes for GC 11.5
i915:
- Fix format string truncation warning
- FIx runtime PM reference during fbdev BO creation
panthor:
- fix UAF
renesas:
- fix sync flag handling"
* tag 'drm-next-2025-12-13' of https://gitlab.freedesktop.org/drm/kernel:
Revert "drm/amd/display: Fix pbn to kbps Conversion"
drm/amd: Fix unbind/rebind for VCN 4.0.5
drm/i915: Fix format string truncation warning
drm/i915/fbdev: Hold runtime PM ref during fbdev BO creation
drm/amd/display: Improve HDMI info retrieval
drm/amdkfd: bump minimum vgpr size for gfx1151
drm/amd/display: shrink struct members
drm/amdkfd: Export the cwsr_size and ctl_stack_size to userspace
drm/amd/display: Refactor dml_core_mode_support to reduce stack frame
drm/amdgpu: don't attach the tlb fence for SI
drm/amd/display: Use GFP_ATOMIC in dc_create_plane_state()
drm/amdkfd: Trap handler support for expert scheduling mode
drm/amdkfd: Use huge page size to check split svm range alignment
drm/rcar-du: dsi: Handle both DRM_MODE_FLAG_N.SYNC and !DRM_MODE_FLAG_P.SYNC
drm/gem-shmem: revert the 8-byte alignment constraint
drm/gem-dma: revert the 8-byte alignment constraint
drm/panthor: Prevent potential UAF in group creation
Subsystem:
- remove .priv_xfers
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Merge tag 'i3c/for-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux
Pull further i3c update from Alexandre Belloni:
"We are removing a legacy API callback and having this sooner rather
than later will help ensuring no one introduces a new driver using it.
I've also added patches removing the "__free(...) = NULL" pattern
because I'm sure we won't avoid people sending those following the
mailing list discussion..."
* tag 'i3c/for-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
i3c: adi: Fix confusing cleanup.h syntax
i3c: master: Fix confusing cleanup.h syntax
i3c: master: cleanup callback .priv_xfers()
i3c: master: switch to use new callback .i3c_xfers() from .priv_xfers()
Subsystem:
- stop setting max_user_freq from the individual drivers as this has not been
hardware related for a while
New drivers:
- Andes ATCRTC100
- Apple SMC
- Nvidia VRS
Drivers:
- renesas-rtca3: add RZ/V2H support
- tegra: add ACPI support
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Merge tag 'rtc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Subsystem:
- stop setting max_user_freq from the individual drivers as this has
not been hardware related for a while
New drivers:
- Andes ATCRTC100
- Apple SMC
- Nvidia VRS
Drivers:
- renesas-rtca3: add RZ/V2H support
- tegra: add ACPI support"
* tag 'rtc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits)
rtc: spacemit: MFD_SPACEMIT_P1 as dependencies
rtc: atcrtc100: Fix signedness bug in probe()
rtc: max31335: Fix ignored return value in set_alarm
rtc: gamecube: Check the return value of ioremap()
Documentation: ABI: testing: Fix "upto" typo in rtc-cdev
rtc: Add new rtc-macsmc driver for Apple Silicon Macs
dt-bindings: rtc: Add Apple SMC RTC
MAINTAINERS: drop unneeded file entry in NVIDIA VRS RTC DRIVER
rtc: isl12026: Add id_table
rtc: renesas-rtca3: Add support for multiple reset lines
dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H support
rtc: tegra: Replace deprecated SIMPLE_DEV_PM_OPS
rtc: tegra: Add ACPI support
rtc: tegra: Use devm_clk_get_enabled() in probe
rtc: Kconfig: add MC34708 to mc13xxx help text
rtc: s35390a: use u8 instead of char for register buffer
rtc: nvvrs: add NVIDIA VRS RTC device driver
dt-bindings: rtc: Document NVIDIA VRS RTC
rtc: atcrtc100: Add ATCRTC100 RTC driver
MAINTAINERS: Add entry for ATCRTC100 RTC driver
...
This tightens the dependency for the new pwm driver written in Rust to
make build bots and obviously also users happy.
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Merge tag 'pwm/for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm fix from Uwe Kleine-König:
"Fix missing th1520 Kconfig dependencies
This tightens the dependency for the new pwm driver written in Rust to
make build bots and obviously also users happy"
* tag 'pwm/for-6.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
pwm: th1520: Fix missing Kconfig dependencies
- fix spinlock op type after conversion to lock guards
- fix a memory leak in error path in gpio-regmap
- Kconfig fixes in GPIO drivers
- add a GPIO ACPI quirk for Dell Precision 7780
- set of fixes for shared GPIO management
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Merge tag 'gpio-fixes-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
- fix spinlock op type after conversion to lock guards
- fix a memory leak in error path in gpio-regmap
- Kconfig fixes in GPIO drivers
- add a GPIO ACPI quirk for Dell Precision 7780
- set of fixes for shared GPIO management
* tag 'gpio-fixes-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: shared: make locking more fine-grained
gpio: shared: fix auxiliary device cleanup order
gpio: shared: check if a reference is populated before cleaning its resources
gpio: shared: fix NULL-pointer dereference in teardown path
gpio: shared: ignore disabled nodes when traversing the device-tree
gpiolib: acpi: Add quirk for Dell Precision 7780
gpio: tb10x: fix OF_GPIO dependency
gpio: qixis: select CONFIG_REGMAP_MMIO
gpio: regmap: Fix memleak in error path in gpio_regmap_register()
gpio: mmio: fix bad guard conversion
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Merge tag 'pci-v6.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI fix from Bjorn Helgaas:
- Initialize rzg3s_pcie_msi_irq() MSI status bitmap before use (Claudiu
Beznea)
* tag 'pci-v6.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI: rzg3s-host: Initialize MSI status bitmap before use
- Support for multiple sections in a BPT stream
- Aligning DMA frame with BPT frames
- Qualcomm: support for v3.1.0 controllers
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Merge tag 'soundwire-6.19-rc1_updated' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
- Support for multiple sections in a BPT stream
- Align DMA frame with BPT frames
- Qualcomm support for v3.1.0 controllers
* tag 'soundwire-6.19-rc1_updated' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: intel_ace2x: handle multi BPT sections
soundwire: pass sdw_bpt_section to cdns BPT helpers
soundwire: introduce BPT section
soundwire: intel_ace2x: add fake frame to BRA read command
soundwire: cadence_master: add fake_size parameter to sdw_cdns_prepare_read_dma_buffer
ASoC: SOF: Intel: export hda_sdw_bpt_get_buf_size_aligment
soundwire: cadence: export sdw_cdns_bpt_find_bandwidth
soundwire: cadence_master: set data_per_frame as frame capability
soundwire: only compute BPT stream in sdw_compute_dp0_port_params
soundwire: cadence_master: make frame index trace more readable
soundwire: qcom: adding support for v3.1.0
dt-bindings: soundwire: qcom: Document v3.1.0 version of IP block
soundwire: qcom: prepare for v3.x
soundwire: qcom: deprecate qcom,din/out-ports
dt-bindings: soundwire: qcom: deprecate qcom,din/out-ports
soundwire: qcom: remove unused rd_fifo_depth
of: base: Add of_property_read_u8_index
The rest for 6.19 merge window. The only slightly large change is
the enablement of CIX HD-audio controller, which took a bit time to
be cooked up, while most of other changes are device-specific small
trivial fixes.
- Default disablement of the kconfig for decades old pre-release
alsa-lib PCM API; it's only the default config value change, so
it can't lead to any regressions for the existing setups
- Support for CIX HD-audio controller
- A few ASoC ACP fixes
- Fixes for ASoC cirrus, bcm, wcd, qcom, ak platforms
- Trivial hardening for FireWire and USB-audio
- HD-audio Intel binding fix and quirks
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Merge tag 'sound-fix-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The only slightly large change is the enablement of CIX HD-audio
controller, which took a bit time to be cooked up, while most of other
changes are device-specific small trivial fixes:
- Default disablement of the kconfig for decades old pre-release
alsa-lib PCM API; it's only the default config value change, so it
can't lead to any regressions for the existing setups
- Support for CIX HD-audio controller
- A few ASoC ACP fixes
- Fixes for ASoC cirrus, bcm, wcd, qcom, ak platforms
- Trivial hardening for FireWire and USB-audio
- HD-audio Intel binding fix and quirks"
* tag 'sound-fix-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (30 commits)
ALSA: hda/tas2781: Add new quirk for HP new project
ALSA: hda: cix-ipbloq: Use modern PM ops
ALSA: hda: intel-dsp-config: Prefer legacy driver as fallback
ASoC: amd: acp: update tdm channels for specific DAI
ASoC: cs35l56: Fix incorrect select SND_SOC_CS35L56_CAL_SYSFS_COMMON
ALSA: firewire-motu: add bounds check in put_user loop for DSP events
ASoC: cs35l41: Always return 0 when a subsystem ID is found
ALSA: uapi: Fix typo in asound.h comment
ALSA: Do not build obsolete API
ALSA: hda: add CIX IPBLOQ HDA controller support
ALSA: hda/core: add addr_offset field for bus address translation
ALSA: hda: dt-bindings: add CIX IPBLOQ HDA controller support
ALSA: hda/realtek: Add support for ASUS UM3406GA
ALSA: hda/realtek: Add support for HP Turbine Laptops
ALSA: usb-audio: Initialize status1 to fix uninitialized symbol errors
ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events
ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_hda_read_acpi()
ASoC: cros_ec_codec: Remove unnecessary selection of CRYPTO
ASoc: qcom: q6afe: fix bad guard conversion
ASoC: rockchip: Fix Wvoid-pointer-to-enum-cast warning (again)
...
drm-misc-fixes for v6.19-rc1:
- Fix stack usage warning in novatek-nt35560.
- Fix s/r, i2c issues in nouveau and update string handling.
- Ignore spurious PLL_UNLOCK bit in ti-sn65dsi83.
- Handle IS_ERR vs NULL in drm_plane_create_hotspot_properties().
- Fix devcoredump crash on reading evicted bo's.
- Fix bigendian handling in mgag200.
- Fix probe failure in tilcdc.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/6c371dc1-08bf-4a34-895c-9ef348b6061b@linux.intel.com
Initializing automatic __free variables to NULL without need (e.g.
branches with different allocations), followed by actual allocation is
in contrary to explicit coding rules guiding cleanup.h:
"Given that the "__free(...) = NULL" pattern for variables defined at
the top of the function poses this potential interdependency problem the
recommendation is to always define and assign variables in one statement
and not group variable definitions at the top of the function when
__free() is used."
Code does not have a bug, but is less readable and uses discouraged
coding practice, so fix that by moving declaration to the place of
assignment.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20251208020750.4727-4-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Initializing automatic __free variables to NULL without need (e.g.
branches with different allocations), followed by actual allocation is
in contrary to explicit coding rules guiding cleanup.h:
"Given that the "__free(...) = NULL" pattern for variables defined at
the top of the function poses this potential interdependency problem the
recommendation is to always define and assign variables in one statement
and not group variable definitions at the top of the function when
__free() is used."
Code does not have a bug, but is less readable and uses discouraged
coding practice, so fix that by moving declaration to the place of
assignment.
Not that other existing usage of __free() in this context is a corret
exception initialized to NULL, because the actual allocation is branched
in if().
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20251208020750.4727-3-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Remove the .priv_xfers() callback from the framework after all master
controller drivers have switched to use the new .i3c_xfers() callback.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Link: https://patch.msgid.link/20251203-i3c_xfer_cleanup_master-v2-2-7dd94d04ee2d@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
1, Add basic LoongArch32 support;
2, Select HAVE_ARCH_BITREVERSE in Kconfig;
3, Fix build and boot for CONFIG_RANDSTRUCT;
4, Correct the calculation logic of thread_count;
5, Some bug fixes and other small changes.
Note: Build infrastructures of LoongArch32 are not enabled yet, because
we need to adjust irqchip drivers and wait for GNU toolchain be upstream
first.
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Merge tag 'loongarch-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Add basic LoongArch32 support
Note: Build infrastructures of LoongArch32 are not enabled yet,
because we need to adjust irqchip drivers and wait for GNU toolchain
be upstream first.
- Select HAVE_ARCH_BITREVERSE in Kconfig
- Fix build and boot for CONFIG_RANDSTRUCT
- Correct the calculation logic of thread_count
- Some bug fixes and other small changes
* tag 'loongarch-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (22 commits)
LoongArch: Adjust default config files for 32BIT/64BIT
LoongArch: Adjust VDSO/VSYSCALL for 32BIT/64BIT
LoongArch: Adjust misc routines for 32BIT/64BIT
LoongArch: Adjust user accessors for 32BIT/64BIT
LoongArch: Adjust system call for 32BIT/64BIT
LoongArch: Adjust module loader for 32BIT/64BIT
LoongArch: Adjust time routines for 32BIT/64BIT
LoongArch: Adjust process management for 32BIT/64BIT
LoongArch: Adjust memory management for 32BIT/64BIT
LoongArch: Adjust boot & setup for 32BIT/64BIT
LoongArch: Adjust common macro definitions for 32BIT/64BIT
LoongArch: Add adaptive CSR accessors for 32BIT/64BIT
LoongArch: Add atomic operations for 32BIT/64BIT
LoongArch: Add new PCI ID for pci_fixup_vgadev()
LoongArch: Add and use some macros for AVEC
LoongArch: Correct the calculation logic of thread_count
LoongArch: Use unsigned long for _end and _text
LoongArch: Use __pmd()/__pte() for swap entry conversions
LoongArch: Fix arch_dup_task_struct() for CONFIG_RANDSTRUCT
LoongArch: Fix build errors for CONFIG_RANDSTRUCT
...
Fixes for some recent regressions as well as some longstanding issues:
- Fix incorrect output from the arm64 NEON implementation of GHASH
- Merge the ksimd scopes in the arm64 XTS code to reduce stack usage
- Roll up the BLAKE2b round loop on 32-bit kernels to greatly reduce
code size and stack usage
- Add missing RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS dependency
- Fix chacha-riscv64-zvkb.S to not use frame pointer for data
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Merge tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fixes from Eric Biggers:
"Fixes for some recent regressions as well as some longstanding issues:
- Fix incorrect output from the arm64 NEON implementation of GHASH
- Merge the ksimd scopes in the arm64 XTS code to reduce stack usage
- Roll up the BLAKE2b round loop on 32-bit kernels to greatly reduce
code size and stack usage
- Add missing RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS dependency
- Fix chacha-riscv64-zvkb.S to not use frame pointer for data"
* tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
crypto: arm64/ghash - Fix incorrect output from ghash-neon
crypto/arm64: sm4/xts - Merge ksimd scopes to reduce stack bloat
crypto/arm64: aes/xts - Use single ksimd scope to reduce stack bloat
lib/crypto: blake2s: Replace manual unrolling with unrolled_full
lib/crypto: blake2b: Roll up BLAKE2b round loop on 32-bit
lib/crypto: riscv: Depend on RISCV_EFFICIENT_VECTOR_UNALIGNED_ACCESS
lib/crypto: riscv/chacha: Avoid s0/fp register
