<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/drivers/usb/core, branch v6.5-rc2</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>Merge tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb</title>
<updated>2023-07-03T20:23:10+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2023-07-03T20:23:10+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=56cbceab928d7ac3702de172ff8dcc1da2a6aaeb'/>
<id>56cbceab928d7ac3702de172ff8dcc1da2a6aaeb</id>
<content type='text'>
Pull USB / Thunderbolt driver updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver updates for 6.5-rc1.

  Included in here are:

   - Lots of USB4/Thunderbolt additions and updates for new hardware
     types and fixes as people are starting to get access to the
     hardware in the wild

   - new gadget controller driver, cdns2, added

   - new typec drivers added

   - xhci driver updates

   - typec driver updates

   - usbip driver fixes

   - usb-serial driver updates and fixes

   - lots of smaller USB driver updates

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits)
  usb: host: xhci-plat: Set XHCI_STATE_REMOVING before resuming XHCI HC
  usb: host: xhci: Do not re-initialize the XHCI HC if being removed
  usb: typec: nb7vpq904m: fix CONFIG_DRM dependency
  usbip: usbip_host: Replace strlcpy with strscpy
  usb: dwc3: gadget: Propagate core init errors to UDC during pullup
  USB: serial: option: add LARA-R6 01B PIDs
  usb: ulpi: Make container_of() no-op in to_ulpi_dev()
  usb: gadget: legacy: fix error return code in gfs_bind
  usb: typec: fsa4480: add support for Audio Accessory Mode
  usb: typec: fsa4480: rework mux &amp; switch setup to handle more states
  usb: typec: ucsi: call typec_set_mode on non-altmode partner change
  USB: gadget: f_hid: make hidg_class a static const structure
  USB: gadget: f_printer: make usb_gadget_class a static const structure
  USB: mon: make mon_bin_class a static const structure
  USB: gadget: udc: core: make udc_class a static const structure
  USB: roles: make role_class a static const structure
  dt-bindings: usb: dwc3: Add interrupt-names property support for wakeup interrupt
  dt-bindings: usb: Add StarFive JH7110 USB controller
  dt-bindings: usb: dwc3: Add IPQ9574 compatible
  usb: cdns2: Fix spelling mistake in a trace message "Wakupe" -&gt; "Wakeup"
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull USB / Thunderbolt driver updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver updates for 6.5-rc1.

  Included in here are:

   - Lots of USB4/Thunderbolt additions and updates for new hardware
     types and fixes as people are starting to get access to the
     hardware in the wild

   - new gadget controller driver, cdns2, added

   - new typec drivers added

   - xhci driver updates

   - typec driver updates

   - usbip driver fixes

   - usb-serial driver updates and fixes

   - lots of smaller USB driver updates

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'usb-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits)
  usb: host: xhci-plat: Set XHCI_STATE_REMOVING before resuming XHCI HC
  usb: host: xhci: Do not re-initialize the XHCI HC if being removed
  usb: typec: nb7vpq904m: fix CONFIG_DRM dependency
  usbip: usbip_host: Replace strlcpy with strscpy
  usb: dwc3: gadget: Propagate core init errors to UDC during pullup
  USB: serial: option: add LARA-R6 01B PIDs
  usb: ulpi: Make container_of() no-op in to_ulpi_dev()
  usb: gadget: legacy: fix error return code in gfs_bind
  usb: typec: fsa4480: add support for Audio Accessory Mode
  usb: typec: fsa4480: rework mux &amp; switch setup to handle more states
  usb: typec: ucsi: call typec_set_mode on non-altmode partner change
  USB: gadget: f_hid: make hidg_class a static const structure
  USB: gadget: f_printer: make usb_gadget_class a static const structure
  USB: mon: make mon_bin_class a static const structure
  USB: gadget: udc: core: make udc_class a static const structure
  USB: roles: make role_class a static const structure
  dt-bindings: usb: dwc3: Add interrupt-names property support for wakeup interrupt
  dt-bindings: usb: Add StarFive JH7110 USB controller
  dt-bindings: usb: dwc3: Add IPQ9574 compatible
  usb: cdns2: Fix spelling mistake in a trace message "Wakupe" -&gt; "Wakeup"
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm</title>
<updated>2023-06-28T17:28:11+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2023-06-28T17:28:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=6e17c6de3ddf3073741d9c91a796ee696914d8a0'/>
<id>6e17c6de3ddf3073741d9c91a796ee696914d8a0</id>
<content type='text'>
Pull mm updates from Andrew Morton:

 - Yosry Ahmed brought back some cgroup v1 stats in OOM logs

 - Yosry has also eliminated cgroup's atomic rstat flushing

 - Nhat Pham adds the new cachestat() syscall. It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability

 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning

 - Lorenzo Stoakes has done some maintanance work on the
   get_user_pages() interface

 - Liam Howlett continues with cleanups and maintenance work to the
   maple tree code. Peng Zhang also does some work on maple tree

 - Johannes Weiner has done some cleanup work on the compaction code

 - David Hildenbrand has contributed additional selftests for
   get_user_pages()

 - Thomas Gleixner has contributed some maintenance and optimization
   work for the vmalloc code

 - Baolin Wang has provided some compaction cleanups,

 - SeongJae Park continues maintenance work on the DAMON code

 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting

 - Christoph Hellwig has some cleanups for the filemap/directio code

 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the
   provided APIs rather than open-coding accesses

 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings

 - John Hubbard has a series of fixes to the MM selftesting code

 - ZhangPeng continues the folio conversion campaign

 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock

 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
   from 128 to 8

 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management

 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code

 - Vishal Moola also has done some folio conversion work

 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch

* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
  mm/hugetlb: remove hugetlb_set_page_subpool()
  mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
  hugetlb: revert use of page_cache_next_miss()
  Revert "page cache: fix page_cache_next/prev_miss off by one"
  mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
  mm: memcg: rename and document global_reclaim()
  mm: kill [add|del]_page_to_lru_list()
  mm: compaction: convert to use a folio in isolate_migratepages_block()
  mm: zswap: fix double invalidate with exclusive loads
  mm: remove unnecessary pagevec includes
  mm: remove references to pagevec
  mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
  mm: remove struct pagevec
  net: convert sunrpc from pagevec to folio_batch
  i915: convert i915_gpu_error to use a folio_batch
  pagevec: rename fbatch_count()
  mm: remove check_move_unevictable_pages()
  drm: convert drm_gem_put_pages() to use a folio_batch
  i915: convert shmem_sg_free_table() to use a folio_batch
  scatterlist: add sg_set_folio()
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull mm updates from Andrew Morton:

 - Yosry Ahmed brought back some cgroup v1 stats in OOM logs

 - Yosry has also eliminated cgroup's atomic rstat flushing

 - Nhat Pham adds the new cachestat() syscall. It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability

 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning

 - Lorenzo Stoakes has done some maintanance work on the
   get_user_pages() interface

 - Liam Howlett continues with cleanups and maintenance work to the
   maple tree code. Peng Zhang also does some work on maple tree

 - Johannes Weiner has done some cleanup work on the compaction code

 - David Hildenbrand has contributed additional selftests for
   get_user_pages()

 - Thomas Gleixner has contributed some maintenance and optimization
   work for the vmalloc code

 - Baolin Wang has provided some compaction cleanups,

 - SeongJae Park continues maintenance work on the DAMON code

 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting

 - Christoph Hellwig has some cleanups for the filemap/directio code

 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the
   provided APIs rather than open-coding accesses

 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings

 - John Hubbard has a series of fixes to the MM selftesting code

 - ZhangPeng continues the folio conversion campaign

 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock

 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
   from 128 to 8

 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management

 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code

 - Vishal Moola also has done some folio conversion work

 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch

* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
  mm/hugetlb: remove hugetlb_set_page_subpool()
  mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
  hugetlb: revert use of page_cache_next_miss()
  Revert "page cache: fix page_cache_next/prev_miss off by one"
  mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
  mm: memcg: rename and document global_reclaim()
  mm: kill [add|del]_page_to_lru_list()
  mm: compaction: convert to use a folio in isolate_migratepages_block()
  mm: zswap: fix double invalidate with exclusive loads
  mm: remove unnecessary pagevec includes
  mm: remove references to pagevec
  mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
  mm: remove struct pagevec
  net: convert sunrpc from pagevec to folio_batch
  i915: convert i915_gpu_error to use a folio_batch
  pagevec: rename fbatch_count()
  mm: remove check_move_unevictable_pages()
  drm: convert drm_gem_put_pages() to use a folio_batch
  i915: convert shmem_sg_free_table() to use a folio_batch
  scatterlist: add sg_set_folio()
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>drivers/usb: use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN</title>
<updated>2023-06-19T23:19:21+00:00</updated>
<author>
<name>Catalin Marinas</name>
<email>catalin.marinas@arm.com</email>
</author>
<published>2023-06-12T15:31:51+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=075efe7c1656932f60384fed36ed05a79c6b114b'/>
<id>075efe7c1656932f60384fed36ed05a79c6b114b</id>
<content type='text'>
ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA
operations while ARCH_KMALLOC_MINALIGN is the minimum kmalloc() objects
alignment.

Link: https://lkml.kernel.org/r/20230612153201.554742-8-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Acked-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Tested-by: Isaac J. Manjarres &lt;isaacmanjarres@google.com&gt;
Cc: Alasdair Kergon &lt;agk@redhat.com&gt;
Cc: Ard Biesheuvel &lt;ardb@kernel.org&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Christoph Hellwig &lt;hch@lst.de&gt;
Cc: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Cc: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Cc: Jerry Snitselaar &lt;jsnitsel@redhat.com&gt;
Cc: Joerg Roedel &lt;joro@8bytes.org&gt;
Cc: Jonathan Cameron &lt;jic23@kernel.org&gt;
Cc: Jonathan Cameron &lt;Jonathan.Cameron@huawei.com&gt;
Cc: Lars-Peter Clausen &lt;lars@metafoo.de&gt;
Cc: Logan Gunthorpe &lt;logang@deltatee.com&gt;
Cc: Marc Zyngier &lt;maz@kernel.org&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Mike Snitzer &lt;snitzer@kernel.org&gt;
Cc: "Rafael J. Wysocki" &lt;rafael@kernel.org&gt;
Cc: Robin Murphy &lt;robin.murphy@arm.com&gt;
Cc: Saravana Kannan &lt;saravanak@google.com&gt;
Cc: Vlastimil Babka &lt;vbabka@suse.cz&gt;
Cc: Will Deacon &lt;will@kernel.org&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA
operations while ARCH_KMALLOC_MINALIGN is the minimum kmalloc() objects
alignment.

Link: https://lkml.kernel.org/r/20230612153201.554742-8-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Acked-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Tested-by: Isaac J. Manjarres &lt;isaacmanjarres@google.com&gt;
Cc: Alasdair Kergon &lt;agk@redhat.com&gt;
Cc: Ard Biesheuvel &lt;ardb@kernel.org&gt;
Cc: Arnd Bergmann &lt;arnd@arndb.de&gt;
Cc: Christoph Hellwig &lt;hch@lst.de&gt;
Cc: Daniel Vetter &lt;daniel@ffwll.ch&gt;
Cc: Herbert Xu &lt;herbert@gondor.apana.org.au&gt;
Cc: Jerry Snitselaar &lt;jsnitsel@redhat.com&gt;
Cc: Joerg Roedel &lt;joro@8bytes.org&gt;
Cc: Jonathan Cameron &lt;jic23@kernel.org&gt;
Cc: Jonathan Cameron &lt;Jonathan.Cameron@huawei.com&gt;
Cc: Lars-Peter Clausen &lt;lars@metafoo.de&gt;
Cc: Logan Gunthorpe &lt;logang@deltatee.com&gt;
Cc: Marc Zyngier &lt;maz@kernel.org&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Mike Snitzer &lt;snitzer@kernel.org&gt;
Cc: "Rafael J. Wysocki" &lt;rafael@kernel.org&gt;
Cc: Robin Murphy &lt;robin.murphy@arm.com&gt;
Cc: Saravana Kannan &lt;saravanak@google.com&gt;
Cc: Vlastimil Babka &lt;vbabka@suse.cz&gt;
Cc: Will Deacon &lt;will@kernel.org&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: update the ctime as well when updating mtime after an ioctl</title>
<updated>2023-06-13T09:58:50+00:00</updated>
<author>
<name>Jeff Layton</name>
<email>jlayton@kernel.org</email>
</author>
<published>2023-06-12T10:45:18+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=a053d9dc45acb9534ab4ff1e5794c73011ae5d4d'/>
<id>a053d9dc45acb9534ab4ff1e5794c73011ae5d4d</id>
<content type='text'>
In general, POSIX requires that when the mtime is updated that the ctime
be updated as well. Add the missing timestamp updates to the usb ioctls.

Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Message-ID: &lt;20230612104524.17058-3-jlayton@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
In general, POSIX requires that when the mtime is updated that the ctime
be updated as well. Add the missing timestamp updates to the usb ioctls.

Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Message-ID: &lt;20230612104524.17058-3-jlayton@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: core: add sysfs entry for usb device state</title>
<updated>2023-06-13T09:58:26+00:00</updated>
<author>
<name>Roy Luo</name>
<email>royluo@google.com</email>
</author>
<published>2023-06-08T01:59:12+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=83cb2604f641cecadc275ca18adbba4bf262320f'/>
<id>83cb2604f641cecadc275ca18adbba4bf262320f</id>
<content type='text'>
Expose usb device state to userland as the information is useful in
detecting non-compliant setups and diagnosing enumeration failures.
For example:
- End-to-end signal integrity issues: the device would fail port reset
  repeatedly and thus be stuck in POWERED state.
- Charge-only cables (missing D+/D- lines): the device would never enter
  POWERED state as the HC would not see any pullup.

What's the status quo?
We do have error logs such as "Cannot enable. Maybe the USB cable is bad?"
to flag potential setup issues, but there's no good way to expose them to
userspace.

Why add a sysfs entry in struct usb_port instead of struct usb_device?
The struct usb_device is not device_add() to the system until it's in
ADDRESS state hence we would miss the first two states. The struct
usb_port is a better place to keep the information because its life
cycle is longer than the struct usb_device that is attached to the port.

Reported-by: kernel test robot &lt;oliver.sang@intel.com&gt;
Closes: https://lore.kernel.org/oe-lkp/202306042228.e532af6e-oliver.sang@intel.com
Reviewed-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Roy Luo &lt;royluo@google.com&gt;
Message-ID: &lt;20230608015913.1679984-1-royluo@google.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Expose usb device state to userland as the information is useful in
detecting non-compliant setups and diagnosing enumeration failures.
For example:
- End-to-end signal integrity issues: the device would fail port reset
  repeatedly and thus be stuck in POWERED state.
- Charge-only cables (missing D+/D- lines): the device would never enter
  POWERED state as the HC would not see any pullup.

What's the status quo?
We do have error logs such as "Cannot enable. Maybe the USB cable is bad?"
to flag potential setup issues, but there's no good way to expose them to
userspace.

Why add a sysfs entry in struct usb_port instead of struct usb_device?
The struct usb_device is not device_add() to the system until it's in
ADDRESS state hence we would miss the first two states. The struct
usb_port is a better place to keep the information because its life
cycle is longer than the struct usb_device that is attached to the port.

Reported-by: kernel test robot &lt;oliver.sang@intel.com&gt;
Closes: https://lore.kernel.org/oe-lkp/202306042228.e532af6e-oliver.sang@intel.com
Reviewed-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Signed-off-by: Roy Luo &lt;royluo@google.com&gt;
Message-ID: &lt;20230608015913.1679984-1-royluo@google.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge 6.4-rc5 into usb-next</title>
<updated>2023-06-05T05:39:02+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@linuxfoundation.org</email>
</author>
<published>2023-06-05T05:39:02+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=d37537a1f7cf09e304fe7993cb5e732534a0fb22'/>
<id>d37537a1f7cf09e304fe7993cb5e732534a0fb22</id>
<content type='text'>
We need the USB fixes in here are well.

Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
We need the USB fixes in here are well.

Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: usbfs: Use consistent mmap functions</title>
<updated>2023-05-29T15:14:28+00:00</updated>
<author>
<name>Ruihan Li</name>
<email>lrh2000@pku.edu.cn</email>
</author>
<published>2023-05-15T13:09:56+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=d0b861653f8c16839c3035875b556afc4472f941'/>
<id>d0b861653f8c16839c3035875b556afc4472f941</id>
<content type='text'>
When hcd-&gt;localmem_pool is non-null, localmem_pool is used to allocate
DMA memory. In this case, the dma address will be properly returned (in
dma_handle), and dma_mmap_coherent should be used to map this memory
into the user space. However, the current implementation uses
pfn_remap_range, which is supposed to map normal pages.

Instead of repeating the logic in the memory allocation function, this
patch introduces a more robust solution. Here, the type of allocated
memory is checked by testing whether dma_handle is properly set. If
dma_handle is properly returned, it means some DMA pages are allocated
and dma_mmap_coherent should be used to map them. Otherwise, normal
pages are allocated and pfn_remap_range should be called. This ensures
that the correct mmap functions are used consistently, independently
with logic details that determine which type of memory gets allocated.

Fixes: a0e710a7def4 ("USB: usbfs: fix mmap dma mismatch")
Cc: stable@vger.kernel.org
Signed-off-by: Ruihan Li &lt;lrh2000@pku.edu.cn&gt;
Link: https://lore.kernel.org/r/20230515130958.32471-3-lrh2000@pku.edu.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
When hcd-&gt;localmem_pool is non-null, localmem_pool is used to allocate
DMA memory. In this case, the dma address will be properly returned (in
dma_handle), and dma_mmap_coherent should be used to map this memory
into the user space. However, the current implementation uses
pfn_remap_range, which is supposed to map normal pages.

Instead of repeating the logic in the memory allocation function, this
patch introduces a more robust solution. Here, the type of allocated
memory is checked by testing whether dma_handle is properly set. If
dma_handle is properly returned, it means some DMA pages are allocated
and dma_mmap_coherent should be used to map them. Otherwise, normal
pages are allocated and pfn_remap_range should be called. This ensures
that the correct mmap functions are used consistently, independently
with logic details that determine which type of memory gets allocated.

Fixes: a0e710a7def4 ("USB: usbfs: fix mmap dma mismatch")
Cc: stable@vger.kernel.org
Signed-off-by: Ruihan Li &lt;lrh2000@pku.edu.cn&gt;
Link: https://lore.kernel.org/r/20230515130958.32471-3-lrh2000@pku.edu.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: usbfs: Enforce page requirements for mmap</title>
<updated>2023-05-29T15:14:28+00:00</updated>
<author>
<name>Ruihan Li</name>
<email>lrh2000@pku.edu.cn</email>
</author>
<published>2023-05-15T13:09:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=0143d148d1e882fb1538dc9974c94d63961719b9'/>
<id>0143d148d1e882fb1538dc9974c94d63961719b9</id>
<content type='text'>
The current implementation of usbdev_mmap uses usb_alloc_coherent to
allocate memory pages that will later be mapped into the user space.
Meanwhile, usb_alloc_coherent employs three different methods to
allocate memory, as outlined below:
 * If hcd-&gt;localmem_pool is non-null, it uses gen_pool_dma_alloc to
   allocate memory;
 * If DMA is not available, it uses kmalloc to allocate memory;
 * Otherwise, it uses dma_alloc_coherent.

However, it should be noted that gen_pool_dma_alloc does not guarantee
that the resulting memory will be page-aligned. Furthermore, trying to
map slab pages (i.e., memory allocated by kmalloc) into the user space
is not resonable and can lead to problems, such as a type confusion bug
when PAGE_TABLE_CHECK=y [1].

To address these issues, this patch introduces hcd_alloc_coherent_pages,
which addresses the above two problems. Specifically,
hcd_alloc_coherent_pages uses gen_pool_dma_alloc_align instead of
gen_pool_dma_alloc to ensure that the memory is page-aligned. To replace
kmalloc, hcd_alloc_coherent_pages directly allocates pages by calling
__get_free_pages.

Reported-by: syzbot+fcf1a817ceb50935ce99@syzkaller.appspotmail.comm
Closes: https://lore.kernel.org/lkml/000000000000258e5e05fae79fc1@google.com/ [1]
Fixes: f7d34b445abc ("USB: Add support for usbfs zerocopy.")
Fixes: ff2437befd8f ("usb: host: Fix excessive alignment restriction for local memory allocations")
Cc: stable@vger.kernel.org
Signed-off-by: Ruihan Li &lt;lrh2000@pku.edu.cn&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/20230515130958.32471-2-lrh2000@pku.edu.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The current implementation of usbdev_mmap uses usb_alloc_coherent to
allocate memory pages that will later be mapped into the user space.
Meanwhile, usb_alloc_coherent employs three different methods to
allocate memory, as outlined below:
 * If hcd-&gt;localmem_pool is non-null, it uses gen_pool_dma_alloc to
   allocate memory;
 * If DMA is not available, it uses kmalloc to allocate memory;
 * Otherwise, it uses dma_alloc_coherent.

However, it should be noted that gen_pool_dma_alloc does not guarantee
that the resulting memory will be page-aligned. Furthermore, trying to
map slab pages (i.e., memory allocated by kmalloc) into the user space
is not resonable and can lead to problems, such as a type confusion bug
when PAGE_TABLE_CHECK=y [1].

To address these issues, this patch introduces hcd_alloc_coherent_pages,
which addresses the above two problems. Specifically,
hcd_alloc_coherent_pages uses gen_pool_dma_alloc_align instead of
gen_pool_dma_alloc to ensure that the memory is page-aligned. To replace
kmalloc, hcd_alloc_coherent_pages directly allocates pages by calling
__get_free_pages.

Reported-by: syzbot+fcf1a817ceb50935ce99@syzkaller.appspotmail.comm
Closes: https://lore.kernel.org/lkml/000000000000258e5e05fae79fc1@google.com/ [1]
Fixes: f7d34b445abc ("USB: Add support for usbfs zerocopy.")
Fixes: ff2437befd8f ("usb: host: Fix excessive alignment restriction for local memory allocations")
Cc: stable@vger.kernel.org
Signed-off-by: Ruihan Li &lt;lrh2000@pku.edu.cn&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/20230515130958.32471-2-lrh2000@pku.edu.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>usb: hide unused usbfs_notify_suspend/resume functions</title>
<updated>2023-05-29T14:49:21+00:00</updated>
<author>
<name>Arnd Bergmann</name>
<email>arnd@arndb.de</email>
</author>
<published>2023-05-16T20:17:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=8e6bd945e6dde64fbc60ec3fe252164493a8d3a2'/>
<id>8e6bd945e6dde64fbc60ec3fe252164493a8d3a2</id>
<content type='text'>
The declaration is in an #ifdef, which causes warnings when building
with 'make W=1' and without CONFIG_PM:

drivers/usb/core/devio.c:742:6: error: no previous prototype for 'usbfs_notify_suspend'
drivers/usb/core/devio.c:747:6: error: no previous prototype for 'usbfs_notify_resume'

Use the same #ifdef check around the function definitions to avoid
the warnings and slightly shrink the USB core.

Fixes: 7794f486ed0b ("usbfs: Add ioctls for runtime power management")
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Reviewed-by: Sebastian Reichel &lt;sebastian.reichel@collabora.com&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/20230516202103.558301-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The declaration is in an #ifdef, which causes warnings when building
with 'make W=1' and without CONFIG_PM:

drivers/usb/core/devio.c:742:6: error: no previous prototype for 'usbfs_notify_suspend'
drivers/usb/core/devio.c:747:6: error: no previous prototype for 'usbfs_notify_resume'

Use the same #ifdef check around the function definitions to avoid
the warnings and slightly shrink the USB core.

Fixes: 7794f486ed0b ("usbfs: Add ioctls for runtime power management")
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Reviewed-by: Sebastian Reichel &lt;sebastian.reichel@collabora.com&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Link: https://lore.kernel.org/r/20230516202103.558301-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>USB: Extend pci resume function to handle PM events</title>
<updated>2023-05-13T08:33:18+00:00</updated>
<author>
<name>Basavaraj Natikar</name>
<email>Basavaraj.Natikar@amd.com</email>
</author>
<published>2023-04-28T14:00:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=1f7d5520719dd1fed1a2947679f6cc26a55f1e6b'/>
<id>1f7d5520719dd1fed1a2947679f6cc26a55f1e6b</id>
<content type='text'>
Currently, the pci_resume method has only a flag indicating whether the
system is resuming from hibernation. In order to handle all PM events like
AUTO_RESUME (runtime resume from device in D3), RESUME (system resume from
s2idle, S3 or S4 states) etc change the pci_resume method to handle all PM
events.

Signed-off-by: Basavaraj Natikar &lt;Basavaraj.Natikar@amd.com&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Acked-by: Mathias Nyman &lt;mathias.nyman@linux.intel.com&gt;
Link: https://lore.kernel.org/r/20230428140056.1318981-2-Basavaraj.Natikar@amd.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Currently, the pci_resume method has only a flag indicating whether the
system is resuming from hibernation. In order to handle all PM events like
AUTO_RESUME (runtime resume from device in D3), RESUME (system resume from
s2idle, S3 or S4 states) etc change the pci_resume method to handle all PM
events.

Signed-off-by: Basavaraj Natikar &lt;Basavaraj.Natikar@amd.com&gt;
Acked-by: Alan Stern &lt;stern@rowland.harvard.edu&gt;
Acked-by: Mathias Nyman &lt;mathias.nyman@linux.intel.com&gt;
Link: https://lore.kernel.org/r/20230428140056.1318981-2-Basavaraj.Natikar@amd.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
