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<title>lwn.git/arch/powerpc/platforms/ps3, branch docs-mw</title>
<subtitle>Linux kernel documentation tree maintained by Jonathan Corbet</subtitle>
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<updated>2026-04-01T03:51:06+00:00</updated>
<entry>
<title>powerpc/ps3: spu.c: fix enum and Return kernel-doc warnings</title>
<updated>2026-04-01T03:51:06+00:00</updated>
<author>
<name>Randy Dunlap</name>
<email>rdunlap@infradead.org</email>
</author>
<published>2026-02-25T05:53:28+00:00</published>
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<id>urn:sha1:26d76caac47f44b3ee4cdf080614bbee07713007</id>
<content type='text'>
Fix enum and function return value kernel-doc warnings:

Warning: spu.c:36 Excess enum value '%spe_type_logical' description in 'spe_type'
Warning: spu.c:78 Excess enum value '%spe_ex_state_unexecutable' description in 'spe_ex_state'
Warning: spu.c:78 Excess enum value '%spe_ex_state_executable' description in 'spe_ex_state'
Warning: spu.c:78 Excess enum value '%spe_ex_state_executed' description in 'spe_ex_state'
Warning: spu.c:190 No description found for return value of 'setup_areas'

Fixes: de91a5342995 ("[POWERPC] ps3: add spu support")
Fixes: b47027795a22 ("powerpc/ps3: Fix ioremap of spu shadow regs")
Signed-off-by: Randy Dunlap &lt;rdunlap@infradead.org&gt;
Signed-off-by: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Link: https://patch.msgid.link/20260225055328.249204-1-rdunlap@infradead.org

</content>
</entry>
<entry>
<title>Convert 'alloc_flex' family to use the new default GFP_KERNEL argument</title>
<updated>2026-02-22T01:09:51+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-02-22T01:06:51+00:00</published>
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<id>urn:sha1:323bbfcf1ef8836d0d2ad9e2c1f1c684f0e3b5b3</id>
<content type='text'>
This is the exact same thing as the 'alloc_obj()' version, only much
smaller because there are a lot fewer users of the *alloc_flex()
interface.

As with alloc_obj() version, this was done entirely with mindless brute
force, using the same script, except using 'flex' in the pattern rather
than 'objs*'.

Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
</entry>
<entry>
<title>Convert 'alloc_obj' family to use the new default GFP_KERNEL argument</title>
<updated>2026-02-22T01:09:51+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2026-02-22T00:37:42+00:00</published>
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<id>urn:sha1:bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43</id>
<content type='text'>
This was done entirely with mindless brute force, using

    git grep -l '\&lt;k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
</entry>
<entry>
<title>treewide: Replace kmalloc with kmalloc_obj for non-scalar types</title>
<updated>2026-02-21T09:02:28+00:00</updated>
<author>
<name>Kees Cook</name>
<email>kees@kernel.org</email>
</author>
<published>2026-02-21T07:49:23+00:00</published>
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<id>urn:sha1:69050f8d6d075dc01af7a5f2f550a8067510366f</id>
<content type='text'>
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook &lt;kees@kernel.org&gt;
</content>
</entry>
<entry>
<title>Merge tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc</title>
<updated>2025-12-07T02:34:24+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-12-07T02:34:24+00:00</published>
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<id>urn:sha1:83bd89291f5cc866f60d32c34e268896c7ba8a3d</id>
<content type='text'>
Pull char/misc/IIO driver updates from Greg KH:
 "Here is the big set of char/misc/iio driver updates for 6.19-rc1. Lots
  of stuff in here including:

   - lots of IIO driver updates, cleanups, and additions

   - large interconnect driver changes as they get converted over to a
     dynamic system of ids

   - coresight driver updates

   - mwave driver updates

   - binder driver updates and changes

   - comedi driver fixes now that the fuzzers are being set loose on
     them

   - nvmem driver updates

   - new uio driver addition

   - lots of other small char/misc driver updates, full details in the
     shortlog

  All of these have been in linux-next for a while now"

* tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (304 commits)
  char: applicom: fix NULL pointer dereference in ac_ioctl
  hangcheck-timer: fix coding style spacing
  hangcheck-timer: Replace %Ld with %lld
  hangcheck-timer: replace printk(KERN_CRIT) with pr_crit
  uio: Add SVA support for PCI devices via uio_pci_generic_sva.c
  dt-bindings: slimbus: fix warning from example
  intel_th: Fix error handling in intel_th_output_open
  misc: rp1: Fix an error handling path in rp1_probe()
  char: xillybus: add WQ_UNBOUND to alloc_workqueue users
  misc: bh1770glc: use pm_runtime_resume_and_get() in power_state_store
  misc: cb710: Fix a NULL vs IS_ERR() check in probe()
  mux: mmio: Add suspend and resume support
  virt: acrn: split acrn_mmio_dev_res out of acrn_mmiodev
  greybus: gb-beagleplay: Fix timeout handling in bootloader functions
  greybus: add WQ_PERCPU to alloc_workqueue users
  char/mwave: drop typedefs
  char/mwave: drop printk wrapper
  char/mwave: remove printk tracing
  char/mwave: remove unneeded fops
  char/mwave: remove MWAVE_FUTZ_WITH_OTHER_DEVICES ifdeffery
  ...
</content>
</entry>
<entry>
<title>powerpc: Convert to physical address DMA mapping</title>
<updated>2025-10-29T09:27:30+00:00</updated>
<author>
<name>Leon Romanovsky</name>
<email>leonro@nvidia.com</email>
</author>
<published>2025-10-15T09:12:56+00:00</published>
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<id>urn:sha1:a10d648d13e1cf24364b4693e3909f614fb0cb17</id>
<content type='text'>
Adapt PowerPC DMA to use physical addresses in order to prepare code
to removal .map_page and .unmap_page.

Signed-off-by: Leon Romanovsky &lt;leonro@nvidia.com&gt;
Signed-off-by: Marek Szyprowski &lt;m.szyprowski@samsung.com&gt;
Link: https://lore.kernel.org/r/20251015-remove-map-page-v5-10-3bbfe3a25cdf@kernel.org
</content>
</entry>
<entry>
<title>arch: powerpc: ps3: Make ps3_system_bus_type const</title>
<updated>2025-10-22T05:55:05+00:00</updated>
<author>
<name>Adrian Barnaś</name>
<email>abarnas@google.com</email>
</author>
<published>2025-09-18T11:48:40+00:00</published>
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<id>urn:sha1:8ae7090dc7862c1c351bce14cdbf9125d3a4416e</id>
<content type='text'>
Because driver core can properly handle constant struct bus_type,
move the ps3_system_bus_type to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Signed-off-by: Adrian Barnaś &lt;abarnas@google.com&gt;
Reviewed-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Reviewed-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Acked-by: Geoff Levand &lt;geoff@infradead.org&gt;
Link: https://patch.msgid.link/20250918114840.53581-1-abarnas@google.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
</entry>
<entry>
<title>Merge tag 'irq-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip</title>
<updated>2025-05-27T15:07:32+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-05-27T15:07:32+00:00</published>
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<id>urn:sha1:2bd1bea5fa6aa79bc563a57919730eb809651b28</id>
<content type='text'>
Pull irq cleanups from Thomas Gleixner:
 "A set of cleanups for the generic interrupt subsystem:

   - Consolidate on one set of functions for the interrupt domain code
     to get rid of pointlessly duplicated code with only marginal
     different semantics.

   - Update the documentation accordingly and consolidate the coding
     style of the irqdomain header"

* tag 'irq-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
  irqdomain: Consolidate coding style
  irqdomain: Fix kernel-doc and add it to Documentation
  Documentation: irqdomain: Update it
  Documentation: irq-domain.rst: Simple improvements
  Documentation: irq/concepts: Minor improvements
  Documentation: irq/concepts: Add commas and reflow
  irqdomain: Improve kernel-docs of functions
  irqdomain: Make struct irq_domain_info variables const
  irqdomain: Use irq_domain_instantiate()'s return value as initializers
  irqdomain: Drop irq_linear_revmap()
  pinctrl: keembay: Switch to irq_find_mapping()
  irqchip/armada-370-xp: Switch to irq_find_mapping()
  gpu: ipu-v3: Switch to irq_find_mapping()
  gpio: idt3243x: Switch to irq_find_mapping()
  sh: Switch to irq_find_mapping()
  powerpc: Switch to irq_find_mapping()
  irqdomain: Drop irq_domain_add_*() functions
  powerpc: Switch irq_domain_add_nomap() to use fwnode
  thermal: Switch to irq_domain_create_linear()
  soc: Switch to irq_domain_create_*()
  ...
</content>
</entry>
<entry>
<title>powerpc: Switch irq_domain_add_nomap() to use fwnode</title>
<updated>2025-05-16T19:06:11+00:00</updated>
<author>
<name>Jiri Slaby (SUSE)</name>
<email>jirislaby@kernel.org</email>
</author>
<published>2025-03-19T09:29:32+00:00</published>
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<id>urn:sha1:813da4f379e789c428d2e0a44730f852e090d47d</id>
<content type='text'>
All irq_domain_add_*() functions are going away. PowerPC is the only
user of irq_domain_add_nomap() and there is no irq_domain_create_nomap()
complement.

Therefore, to align with the rest of the kernel, rename
irq_domain_add_nomap() to irq_domain_create_nomap() and accept a
fwnode_handle instead of a device_node.

[ tglx: Fix up subject prefix ]

Signed-off-by: Jiri Slaby (SUSE) &lt;jirislaby@kernel.org&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Link: https://lore.kernel.org/all/20250319092951.37667-40-jirislaby@kernel.org



</content>
</entry>
<entry>
<title>powerpc/ps3: Use str_write_read() in ps3_notification_read_write()</title>
<updated>2025-04-16T16:48:12+00:00</updated>
<author>
<name>Thorsten Blum</name>
<email>thorsten.blum@linux.dev</email>
</author>
<published>2025-02-19T11:14:45+00:00</published>
<link rel='alternate' type='text/html' href='http://mirrors.hust.edu.cn/git/lwn.git/commit/?id=f69898bce204a67edd48e074069ca3c5d8537334'/>
<id>urn:sha1:f69898bce204a67edd48e074069ca3c5d8537334</id>
<content type='text'>
Remove hard-coded strings by using the str_write_read() helper function.

Suggested-by: Christophe Leroy &lt;christophe.leroy@csgroup.eu&gt;
Signed-off-by: Thorsten Blum &lt;thorsten.blum@linux.dev&gt;
Reviewed-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Signed-off-by: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Link: https://patch.msgid.link/20250219111445.2875-2-thorsten.blum@linux.dev

</content>
</entry>
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