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Patch series "Fix stale IOTLB entries for kernel address space", v7.
This proposes a fix for a security vulnerability related to IOMMU Shared
Virtual Addressing (SVA). In an SVA context, an IOMMU can cache kernel
page table entries. When a kernel page table page is freed and
reallocated for another purpose, the IOMMU might still hold stale,
incorrect entries. This can be exploited to cause a use-after-free or
write-after-free condition, potentially leading to privilege escalation or
data corruption.
This solution introduces a deferred freeing mechanism for kernel page
table pages, which provides a safe window to notify the IOMMU to
invalidate its caches before the page is reused.
This patch (of 8):
In the IOMMU Shared Virtual Addressing (SVA) context, the IOMMU hardware
shares and walks the CPU's page tables. The x86 architecture maps the
kernel's virtual address space into the upper portion of every process's
page table. Consequently, in an SVA context, the IOMMU hardware can walk
and cache kernel page table entries.
The Linux kernel currently lacks a notification mechanism for kernel page
table changes, specifically when page table pages are freed and reused.
The IOMMU driver is only notified of changes to user virtual address
mappings. This can cause the IOMMU's internal caches to retain stale
entries for kernel VA.
Use-After-Free (UAF) and Write-After-Free (WAF) conditions arise when
kernel page table pages are freed and later reallocated. The IOMMU could
misinterpret the new data as valid page table entries. The IOMMU might
then walk into attacker-controlled memory, leading to arbitrary physical
memory DMA access or privilege escalation. This is also a
Write-After-Free issue, as the IOMMU will potentially continue to write
Accessed and Dirty bits to the freed memory while attempting to walk the
stale page tables.
Currently, SVA contexts are unprivileged and cannot access kernel
mappings. However, the IOMMU will still walk kernel-only page tables all
the way down to the leaf entries, where it realizes the mapping is for the
kernel and errors out. This means the IOMMU still caches these
intermediate page table entries, making the described vulnerability a real
concern.
Disable SVA on x86 architecture until the IOMMU can receive notification
to flush the paging cache before freeing the CPU kernel page table pages.
Link: https://lkml.kernel.org/r/20251022082635.2462433-1-baolu.lu@linux.intel.com
Link: https://lkml.kernel.org/r/20251022082635.2462433-2-baolu.lu@linux.intel.com
Fixes: 26b25a2b98e4 ("iommu: Bind process address spaces to devices")
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robin Murohy <robin.murphy@arm.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Cc: Vasant Hegde <vasant.hegde@amd.com>
Cc: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Cc: Yi Lai <yi1.lai@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update the mem char driver (backing /dev/mem and /dev/zero) to use
f_op->mmap_prepare hook rather than the deprecated f_op->mmap.
The /dev/zero implementation has a very unique and rather concerning
characteristic in that it converts MAP_PRIVATE mmap() mappings anonymous
when they are, in fact, not.
The new f_op->mmap_prepare() can support this, but rather than introducing
a helper function to perform this hack (and risk introducing other users),
utilise the success hook to do so.
We utilise the newly introduced shmem_zero_setup_desc() to allow for the
shared mapping case via an f_op->mmap_prepare() hook.
We also use the desc->action_error_hook to filter the remap error to
-EAGAIN to keep behaviour consistent.
Link: https://lkml.kernel.org/r/48f60764d7a6901819d1af778fa33b775d2e8c77.1760959442.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Chatre, Reinette <reinette.chatre@intel.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Morse <james.morse@arm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Robin Murohy <robin.murphy@arm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The devdax driver does nothing special in its f_op->mmap hook, so
straightforwardly update it to use the mmap_prepare hook instead.
Link: https://lkml.kernel.org/r/1e8665d052ac8cf2f7ff92b6c7862614f7fd306c.1760959442.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Pedro Falcato <pfalcato@suse.de>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Chatre, Reinette <reinette.chatre@intel.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Morse <james.morse@arm.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Robin Murohy <robin.murphy@arm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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unregister_node() is only called from unregister_one_node(). This patch
folds unregister_node() into its only caller and renames
unregister_one_node() to unregister_node().
This reduces unnecessary indirection and simplifies the code structure.
No functional changes are introduced.
[donettom@linux.ibm.com: remove extra spaces before @nid and "All"]
Link: https://lkml.kernel.org/r/cff01514-9074-4c97-bcf1-d4e3594e48b0@linux.ibm.com
Link: https://lkml.kernel.org/r/32b7d5d8f0f30d313c3e1d8798f591459c8746f9.1760097208.git.donettom@linux.ibm.com
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: SeongJae Park <sj@kernel.org>
Cc: Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "drivers/base/node: fold node register and unregister
functions", v2.
The first patch merges register_one_node() and register_node(), leaving a
single register_node() function.
The second patch merges unregister_one_node() and unregister_node(),
leaving a single unregister_node() function.
There are no functional changes in these patches.
This patch (of 2):
register_node() is only called from register_one_node(). This patch folds
register_node() into its only caller and renames register_one_node() to
register_node().
This reduces unnecessary indirection and simplifies the code structure.
No functional changes are introduced.
[akpm@linux-foundation.org: fix kerneldoc, per David]
Link: https://lkml.kernel.org/r/cover.1760097207.git.donettom@linux.ibm.com
Link: https://lkml.kernel.org/r/910853c9dd61f7a2190a56cba101e73e9c6859be.1760097207.git.donettom@linux.ibm.com
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Danilo Krummrich <dakr@kernel.org>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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mm_get_unmapped_area() is a wrapper around arch_get_unmapped_area() /
arch_get_unmapped_area_topdown(), both of which search current->mm for
some free space. Neither take an mm_struct - they implicitly operate on
current->mm.
But the wrapper takes an mm_struct and uses it to decide whether to search
bottom up or top down. All callers pass in current->mm for this, so
everything is working consistently. But it feels like an accident waiting
to happen; eventually someone will call that function with a different mm,
expecting to find free space in it, but what gets returned is free space
in the current mm.
So let's simplify by removing the parameter and have the wrapper use
current->mm to decide which end to start at. Now everything is consistent
and self-documenting.
Link: https://lkml.kernel.org/r/20251003155306.2147572-1-ryan.roberts@arm.com
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Extend the driver to support the AST2700 SPI controller. Compared to
AST2600, AST2700 has the following characteristics:
- A 64-bit memory address space.
- A 64KB address decoding unit.
- Segment registers now use (start <= range < end) semantics,
which differs slightly from (start <= range <= end) in AST2600.
- Known issues related to address decoding range registers have been
resolved, and the decoding range is now 1GB, which is sufficient.
Therefore, the adjust_window callback is no longer required on AST2700
for range adjustment and bug fixes.
- The SPI clock divider method and timing calibration logic remain
unchanged from AST2600.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Link: https://patch.msgid.link/20251114101042.1520997-5-chin-ting_kuo@aspeedtech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Update bus address types from u32 to phys_addr_t to support systems with
64-bit memory address space. This change ensures compatibility with
upcoming SoCs that extend the system bus beyond 32-bit, while maintaining
support for existing platforms.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Link: https://patch.msgid.link/20251114101042.1520997-4-chin-ting_kuo@aspeedtech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Ensure the controller switches to quad I/O mode when
spi-tx-bus-width dts property is 4 and the Quad SPI program
opcode (32h or 34h) is used. Without this change, high-bit
data will be lost during page programming.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Link: https://patch.msgid.link/20251114101042.1520997-3-chin-ting_kuo@aspeedtech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch converts below functions.
dapm->dev -> snd_soc_dapm_to_dev()
dapm->card -> snd_soc_dapm_to_card()
dapm->component -> snd_soc_dapm_to_component()
dapm_kcontrol_get_value() -> snd_soc_dapm_kcontrol_get_value()
snd_soc_component_enable_pin() -> snd_soc_dapm_enable_pin()
snd_soc_component_enable_pin_unlocked() -> snd_soc_dapm_enable_pin_unlocked()
snd_soc_component_disable_pin() -> snd_soc_dapm_disable_pin()
snd_soc_component_disable_pin_unlocked() -> snd_soc_dapm_disable_pin_unlocked()
snd_soc_component_nc_pin() -> snd_soc_dapm_nc_pin()
snd_soc_component_nc_pin_unlocked() -> snd_soc_dapm_nc_pin_unlocked()
snd_soc_component_get_pin_status() -> snd_soc_dapm_get_pin_status()
snd_soc_component_force_enable_pin() -> snd_soc_dapm_force_enable_pin()
snd_soc_component_force_enable_pin_unlocked() -> snd_soc_dapm_force_enable_pin_unlocked()
snd_soc_component_force_bias_level() -> snd_soc_dapm_force_bias_level()
snd_soc_component_get_bias_level() -> snd_soc_dapm_get_bias_level()
snd_soc_component_init_bias_level() -> snd_soc_dapm_init_bias_level()
snd_soc_component_get_dapm() -> snd_soc_component_to_dapm()
snd_soc_dapm_kcontrol_component() -> snd_soc_dapm_kcontrol_to_component()
snd_soc_dapm_kcontrol_widget() -> snd_soc_dapm_kcontrol_to_widget()
snd_soc_dapm_kcontrol_dapm() -> snd_soc_dapm_kcontrol_to_dapm()
snd_soc_dapm_np_pin() -> snd_soc_dapm_disable_pin()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/875xbha0d3.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch converts below functions.
dapm->dev -> snd_soc_dapm_to_dev()
dapm->card -> snd_soc_dapm_to_card()
dapm->component -> snd_soc_dapm_to_component()
dapm_kcontrol_get_value() -> snd_soc_dapm_kcontrol_get_value()
snd_soc_component_enable_pin() -> snd_soc_dapm_enable_pin()
snd_soc_component_enable_pin_unlocked() -> snd_soc_dapm_enable_pin_unlocked()
snd_soc_component_disable_pin() -> snd_soc_dapm_disable_pin()
snd_soc_component_disable_pin_unlocked() -> snd_soc_dapm_disable_pin_unlocked()
snd_soc_component_nc_pin() -> snd_soc_dapm_nc_pin()
snd_soc_component_nc_pin_unlocked() -> snd_soc_dapm_nc_pin_unlocked()
snd_soc_component_get_pin_status() -> snd_soc_dapm_get_pin_status()
snd_soc_component_force_enable_pin() -> snd_soc_dapm_force_enable_pin()
snd_soc_component_force_enable_pin_unlocked() -> snd_soc_dapm_force_enable_pin_unlocked()
snd_soc_component_force_bias_level() -> snd_soc_dapm_force_bias_level()
snd_soc_component_get_bias_level() -> snd_soc_dapm_get_bias_level()
snd_soc_component_init_bias_level() -> snd_soc_dapm_init_bias_level()
snd_soc_component_get_dapm() -> snd_soc_component_to_dapm()
snd_soc_dapm_kcontrol_component() -> snd_soc_dapm_kcontrol_to_component()
snd_soc_dapm_kcontrol_widget() -> snd_soc_dapm_kcontrol_to_widget()
snd_soc_dapm_kcontrol_dapm() -> snd_soc_dapm_kcontrol_to_dapm()
snd_soc_dapm_np_pin() -> snd_soc_dapm_disable_pin()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/877bvxa0d6.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch converts below functions.
dapm->dev -> snd_soc_dapm_to_dev()
dapm->card -> snd_soc_dapm_to_card()
dapm->component -> snd_soc_dapm_to_component()
dapm_kcontrol_get_value() -> snd_soc_dapm_kcontrol_get_value()
snd_soc_component_enable_pin() -> snd_soc_dapm_enable_pin()
snd_soc_component_enable_pin_unlocked() -> snd_soc_dapm_enable_pin_unlocked()
snd_soc_component_disable_pin() -> snd_soc_dapm_disable_pin()
snd_soc_component_disable_pin_unlocked() -> snd_soc_dapm_disable_pin_unlocked()
snd_soc_component_nc_pin() -> snd_soc_dapm_nc_pin()
snd_soc_component_nc_pin_unlocked() -> snd_soc_dapm_nc_pin_unlocked()
snd_soc_component_get_pin_status() -> snd_soc_dapm_get_pin_status()
snd_soc_component_force_enable_pin() -> snd_soc_dapm_force_enable_pin()
snd_soc_component_force_enable_pin_unlocked() -> snd_soc_dapm_force_enable_pin_unlocked()
snd_soc_component_force_bias_level() -> snd_soc_dapm_force_bias_level()
snd_soc_component_get_bias_level() -> snd_soc_dapm_get_bias_level()
snd_soc_component_init_bias_level() -> snd_soc_dapm_init_bias_level()
snd_soc_component_get_dapm() -> snd_soc_component_to_dapm()
snd_soc_dapm_kcontrol_component() -> snd_soc_dapm_kcontrol_to_component()
snd_soc_dapm_kcontrol_widget() -> snd_soc_dapm_kcontrol_to_widget()
snd_soc_dapm_kcontrol_dapm() -> snd_soc_dapm_kcontrol_to_dapm()
snd_soc_dapm_np_pin() -> snd_soc_dapm_disable_pin()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/878qgda0da.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch converts below functions.
dapm->dev -> snd_soc_dapm_to_dev()
dapm->card -> snd_soc_dapm_to_card()
dapm->component -> snd_soc_dapm_to_component()
dapm_kcontrol_get_value() -> snd_soc_dapm_kcontrol_get_value()
snd_soc_component_enable_pin() -> snd_soc_dapm_enable_pin()
snd_soc_component_enable_pin_unlocked() -> snd_soc_dapm_enable_pin_unlocked()
snd_soc_component_disable_pin() -> snd_soc_dapm_disable_pin()
snd_soc_component_disable_pin_unlocked() -> snd_soc_dapm_disable_pin_unlocked()
snd_soc_component_nc_pin() -> snd_soc_dapm_nc_pin()
snd_soc_component_nc_pin_unlocked() -> snd_soc_dapm_nc_pin_unlocked()
snd_soc_component_get_pin_status() -> snd_soc_dapm_get_pin_status()
snd_soc_component_force_enable_pin() -> snd_soc_dapm_force_enable_pin()
snd_soc_component_force_enable_pin_unlocked() -> snd_soc_dapm_force_enable_pin_unlocked()
snd_soc_component_force_bias_level() -> snd_soc_dapm_force_bias_level()
snd_soc_component_get_bias_level() -> snd_soc_dapm_get_bias_level()
snd_soc_component_init_bias_level() -> snd_soc_dapm_init_bias_level()
snd_soc_component_get_dapm() -> snd_soc_component_to_dapm()
snd_soc_dapm_kcontrol_component() -> snd_soc_dapm_kcontrol_to_component()
snd_soc_dapm_kcontrol_widget() -> snd_soc_dapm_kcontrol_to_widget()
snd_soc_dapm_kcontrol_dapm() -> snd_soc_dapm_kcontrol_to_dapm()
snd_soc_dapm_np_pin() -> snd_soc_dapm_disable_pin()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/87a50ta0df.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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|
This patch converts below functions.
dapm->dev -> snd_soc_dapm_to_dev()
dapm->card -> snd_soc_dapm_to_card()
dapm->component -> snd_soc_dapm_to_component()
dapm_kcontrol_get_value() -> snd_soc_dapm_kcontrol_get_value()
snd_soc_component_enable_pin() -> snd_soc_dapm_enable_pin()
snd_soc_component_enable_pin_unlocked() -> snd_soc_dapm_enable_pin_unlocked()
snd_soc_component_disable_pin() -> snd_soc_dapm_disable_pin()
snd_soc_component_disable_pin_unlocked() -> snd_soc_dapm_disable_pin_unlocked()
snd_soc_component_nc_pin() -> snd_soc_dapm_nc_pin()
snd_soc_component_nc_pin_unlocked() -> snd_soc_dapm_nc_pin_unlocked()
snd_soc_component_get_pin_status() -> snd_soc_dapm_get_pin_status()
snd_soc_component_force_enable_pin() -> snd_soc_dapm_force_enable_pin()
snd_soc_component_force_enable_pin_unlocked() -> snd_soc_dapm_force_enable_pin_unlocked()
snd_soc_component_force_bias_level() -> snd_soc_dapm_force_bias_level()
snd_soc_component_get_bias_level() -> snd_soc_dapm_get_bias_level()
snd_soc_component_init_bias_level() -> snd_soc_dapm_init_bias_level()
snd_soc_component_get_dapm() -> snd_soc_component_to_dapm()
snd_soc_dapm_kcontrol_component() -> snd_soc_dapm_kcontrol_to_component()
snd_soc_dapm_kcontrol_widget() -> snd_soc_dapm_kcontrol_to_widget()
snd_soc_dapm_kcontrol_dapm() -> snd_soc_dapm_kcontrol_to_dapm()
snd_soc_dapm_np_pin() -> snd_soc_dapm_disable_pin()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/87bjl9a0dm.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Both bs->regs and bs->{rx,tx}_io are tagged __iomem, so we shouldn't
cast them to anything else.
Silences the following sparse warning:
drivers/spi/spi-bcm63xx.c:571:22: warning: cast removes address space '__iomem' of expression
drivers/spi/spi-bcm63xx.c:571:19: warning: incorrect type in assignment (different address spaces)
drivers/spi/spi-bcm63xx.c:571:19: expected unsigned char [noderef] [usertype] __iomem *tx_io
drivers/spi/spi-bcm63xx.c:571:19: got unsigned char [usertype] *
drivers/spi/spi-bcm63xx.c:572:22: warning: cast removes address space '__iomem' of expression
drivers/spi/spi-bcm63xx.c:572:19: warning: incorrect type in assignment (different address spaces)
drivers/spi/spi-bcm63xx.c:572:19: expected unsigned char const [noderef] [usertype] __iomem *rx_io
drivers/spi/spi-bcm63xx.c:572:19: got unsigned char const [usertype] *
Fixes: b42dfed83d95 ("spi: add Broadcom BCM63xx SPI controller driver")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251116093334.17423-1-jonas.gorski@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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https://gitlab.freedesktop.org/drm/xe/kernel into drm-next
UAPI Changes:
Limit number of jobs per exec queue (Shuicheng)
Add sriov_admin sysfs tree (Michal)
Driver Changes:
Fix an uninitialized value (Thomas)
Expose a residency counter through debugfs (Mohammed Thasleem)
Workaround enabling and improvement (Tapani, Tangudu)
More Crescent Island-specific support (Sk Anirban, Lucas)
PAT entry dump imprement (Xin)
Inline gt_reset in the worker (Lucas)
Synchronize GT reset with device unbind (Balasubramani)
Do clean shutdown also when using flr (Jouni)
Fix serialization on burst of unbinds (Matt Brost)
Pagefault Refactor (Matt Brost)
Remove some unused code (Gwan-gyeong)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/aQuBECxNOhudc0Bz@fedora
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Sometimes we may need to iterate over, or find an element in a read
only (or read mostly) red-black tree, and in that case we don't need a
mutable reference to the tree, which we'll however have to take to be
able to use the current (mutable) cursor implementation.
This patch adds a simple immutable cursor implementation to RBTree,
which enables us to use an immutable tree reference. The existing
(fully featured) cursor implementation is renamed to CursorMut,
while retaining its functionality.
The only existing user of the [mutable] cursor for RBTrees (binder) is
updated to match the changes.
Signed-off-by: Vitaly Wool <vitaly.wool@konsulko.se>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251014123339.2492210-1-vitaly.wool@konsulko.se
[ Applied `rustfmt`. Added intra-doc link. Fixed unclosed example.
Fixed docs description. Fixed typo and other formatting nits.
- Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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The file tools/arch/riscv/include/asm/csr.h borrows from
arch/riscv/include/asm/csr.h, and subsequent modifications
related to CSR should maintain consistency.
Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
Link: https://patch.msgid.link/20251114071215.816-1-cp0613@linux.alibaba.com
[pjw@kernel.org: dropped Fixes: lines for patches that weren't broken; removed superfluous blank line]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
|
|
accessing header
The driver expects to receive a struct gs_host_frame in
gs_usb_receive_bulk_callback().
Use struct_group to describe the header of the struct gs_host_frame and
check that we have at least received the header before accessing any
members of it.
To resubmit the URB, do not dereference the pointer chain
"dev->parent->hf_size_rx" but use "parent->hf_size_rx" instead. Since
"urb->context" contains "parent", it is always defined, while "dev" is not
defined if the URB it too short.
Fixes: d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
Link: https://patch.msgid.link/20251114-gs_usb-fix-usb-callbacks-v1-2-a29b42eacada@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
|
|
The driver lacks the cleanup of failed transfers of URBs. This reduces the
number of available URBs per error by 1. This leads to reduced performance
and ultimately to a complete stop of the transmission.
If the sending of a bulk URB fails do proper cleanup:
- increase netdev stats
- mark the echo_sbk as free
- free the driver's context and do accounting
- wake the send queue
Closes: https://github.com/candle-usb/candleLight_fw/issues/187
Fixes: d08e973a77d1 ("can: gs_usb: Added support for the GS_USB CAN devices")
Link: https://patch.msgid.link/20251114-gs_usb-fix-usb-callbacks-v1-1-a29b42eacada@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
|
|
Reading the interrupt register `SJA1000_IR` causes all of its bits to be
reset. If we ever reach the condition of handling more than
`SJA1000_MAX_IRQ` IRQs, we will have read the register and reset all its
bits but without actually handling the interrupt inside of the loop
body.
This may, among other issues, cause us to never `netif_wake_queue()`
again after a transmission interrupt.
Fixes: 429da1cc841b ("can: Driver for the SJA1000 CAN controller")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Mühlbacher <tmuehlbacher@posteo.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20251115153437.11419-1-tmuehlbacher@posteo.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
|
|
Convert several sprintf() calls to sysfs_emit() in the
sysfs show functions, as it is the preferred helper and
prevents potential buffer overruns.
No functional changes intended.
Signed-off-by: Shi Hao <i.shihao.999@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
The `kvaser_usb_leaf_wait_cmd()` and `kvaser_usb_leaf_read_bulk_callback`
functions contain logic to zero-length commands. These commands are used
to align data to the USB endpoint's wMaxPacketSize boundary.
The driver attempts to skip these placeholders by aligning the buffer
position `pos` to the next packet boundary using `round_up()` function.
However, if zero-length command is found exactly on a packet boundary
(i.e., `pos` is a multiple of wMaxPacketSize, including 0), `round_up`
function will return the unchanged value of `pos`. This prevents `pos`
to be increased, causing an infinite loop in the parsing logic.
This patch fixes this in the function by using `pos + 1` instead.
This ensures that even if `pos` is on a boundary, the calculation is
based on `pos + 1`, forcing `round_up()` to always return the next
aligned boundary.
Fixes: 7259124eac7d ("can: kvaser_usb: Split driver into kvaser_usb_core.c and kvaser_usb_leaf.c")
Signed-off-by: Seungjin Bae <eeodqql09@gmail.com>
Reviewed-by: Jimmy Assarsson <extja@kvaser.com>
Tested-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://patch.msgid.link/20251023162709.348240-1-eeodqql09@gmail.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
|
|
Fix hp206c and st_pressure_* entries in pressure Makefiles to follow
alphabetical order as per guideline mentioned in iio/pressure/Makefile.
Signed-off-by: Akhilesh Patil <akhilesh@ee.iitb.ac.in>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixes from Takashi Sakamoto:
"This includes some fixes for the topology map, newly introduced in
v6.18 kernel"
* tag 'firewire-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: core: fix to update generation field in topology map
firewire: core: Initialize topology_map.lock
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fixes from Borislav Petkov:
- In Versalnet, handle the reporting of non-standard hw errors whose
information can come in more than one remote processor message.
- Explicitly reenable ECC checking after a warm reset in Altera OCRAM
as those registers are reset to default otherwise
- Fix single-bit error injection in Altera EDAC to not inject errors
directly in ECC RAM and thus lead to false double-bit errors due to
same ECC RAM being in concurrent use
* tag 'edac_urgent_for_v6.18_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/altera: Use INTTEST register for Ethernet and USB SBE injection
EDAC/altera: Handle OCRAM ECC enable after warm reset
EDAC/versalnet: Handle split messages for non-standard errors
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|
The generation field of topology map is updated after initialized by zero.
The updated value of generation field is always zero, and is against
specification.
This commit fixes the bug.
Fixes: 7d138cb269db ("firewire: core: use spin lock specific to topology map")
Link: https://lore.kernel.org/r/20251114144421.415278-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
|
|
The Parade PS185HDM is a transparent Displayport to HDMI bridge.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Maud Spierings <maud_spierings@hotmail.com>
Link: https://patch.msgid.link/20251116-asus_usbc_dp-v2-2-cc8f51136c9f@hotmail.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
|
|
Objects are created either by d_alloc_name()+d_add() (in
binderfs_ctl_create()) or by simple_start_creating()+d_instantiate().
Removals are by simple_recurisive_removal().
Switch d_add()/d_instantiate() to d_make_persistent() + dput().
Voila - kill_litter_super() is not needed anymore.
Fold dput()+unlocking the parent into simple_done_creating(), while
we are at it.
NOTE: return value of binderfs_create_file() is borrowed; it may get
stored in proc->binderfs_entry. See binder_release()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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|
It's called once, during binderfs mount, right after allocating
root dentry. Checking that it hadn't been already called is
only obfuscating things.
Looks like that bogosity had been copied from devpts...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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|
binderfs_binder_device_create() gets simpler, binderfs_create_dentry() simply
goes away...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
it is always equal (and always had been equal) to &simple_dir_operations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
static contents for each "service processor", whatever the fuck it is.
Congruent subdirectories of root, created at mount time, taken out
by kill_litter_super(). All dentries created with d_alloc_name() and are
left pinned. The odd part is that the list of service providers is
assumed to be unchanging - no locking, nothing to handle removals or
extra elements added later on.
... and it's a PCI device. If you ever tell it to remove an instance,
you are fucked - it doesn't bother with removing its directory from filesystem,
it has a strange check that presumably wanted to be a check for removed
devices, but it had never been fleshed out.
Anyway, d_add() -> d_make_persistent()+dput() in ibmasmfs_create_dir() and
ibmasmfs_create_file(), and make the latter return int - no need to even
borrow that dentry, callers completely ignore it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
entirely static tree, populated by simple_fill_super(). Can switch
to kill_anon_super() without any other changes.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
Quite a bit is already done by infrastructure changes (simple_link(),
simple_unlink()) - all that is left is replacing d_instantiate() +
pinning dget() (in ->symlink() and ->mknod()) with d_make_persistent(),
and, in case of shmem, using simple_unlink() and simple_link() in
->unlink() and ->link() resp., instead of open-coding those there.
Since d_make_persistent() accepts (and hashes) unhashed ones, shmem
situation gets simpler - we no longer care whether ->lookup() has hashed
the sucker.
With that done, we don't need kill_litter_super() for these filesystems
anymore - by the umount time all remaining dentries will be marked
persistent and kill_litter_super() will boil down to call of
kill_anon_super().
The same goes for devtmpfs and rootfs - they are handled by
ramfs or by shmem, depending upon config.
NB: strictly speaking, both devtmpfs and rootfs ought to use
ramfs_kill_sb() if they end up using ramfs; that's a separate
story and the only impact of "just use kill_{litter,anon}_super()"
is that we fail to free their sb->s_fs_info... on reboot.
That's orthogonal to the changes in this series - kill_litter_super()
is identical to kill_anon_super() for those at this point.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
Add support for pressure and temperature rising threshold events. For
both channels *_en and *_value (in raw units) attributes are exposed.
Since in write_event_config() the ctrl_reg1.active and ctrl_reg4
are modified, accessing the data->ctrl_reg{1,4} in set_trigger_state()
and write_event_config() needs to be now guarded by data->lock.
Otherwise, it would be possible that 2 concurrent threads executing
these functions would access the data->ctrl_reg{1,4} at the same time
and then one would overwrite the other's result.
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
The pressure measurement result is arranged as 20-bit unsigned value
residing in three 8-bit registers. Hence, it can be retrieved using
get_unaligned_be24() and by applying 4-bit shift.
Reviewed-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
Replace open-coded dma_resv_lock()/dma_resv_unlock() around
dma_buf_unmap_attachment() in iio_buffer_dmabuf_release() with the
dma_buf_unmap_attachment_unlocked() helper.
This aligns with the standard DMA-BUF API, avoids duplicating
locking logic and eases future maintenance. No functional change.
Reviewed-by: fanggeng <fanggeng@lixiang.com>
Signed-off-by: Liang Jie <liangjie@lixiang.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
Replace lockdep_set_class() + mutex_init() by combined call
mutex_init_with_key().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
Once we called device_initialize() we have to call put_device()
on it. Refactor the code to make it in the right order.
Fixes: fe6f45f6ba22 ("iio: core: check return value when calling dev_set_name()")
Fixes: 847ec80bbaa7 ("Staging: IIO: core support for device registration and management")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
Add missing mutex_destroy() call in iio_dev_release() to properly
clean up the mutex initialized in iio_device_alloc(). Ensure proper
resource cleanup and follows kernel practices.
Found by code review.
While at it, create a lockdep key before mutex initialisation.
This will help with converting it to the better API in the future.
Fixes: 847ec80bbaa7 ("Staging: IIO: core support for device registration and management")
Fixes: ac917a81117c ("staging:iio:core set the iio_dev.info pointer to null on unregister under lock.")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
Add support for Adreno 612 GPU found in SM6150/QCS615 chipsets.
A612 falls under ADRENO_6XX_GEN1 family and is a cut down version
of A615 GPU.
A612 has a new IP called Reduced Graphics Management Unit or RGMU
which is a small state machine which helps to toggle GX GDSC
(connected to CX rail) to implement IFPC feature. It doesn't support
any other features of a full fledged GMU like clock control, resource
voting to rpmh etc. So we need linux clock driver support like other
gmu-wrapper implementations to control gpu core clock and gpu GX gdsc.
This patch skips RGMU core initialization and act more like a
gmu-wrapper case.
Signed-off-by: Jie Zhang <quic_jiezh@quicinc.com>
Signed-off-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/686212/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
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|
The ADXL318 and ADXL319 are low noise density, low power, 3-axis
accelerometers based on ADXL380 and ADXL382, respectively. The main
difference between the new parts and the existing ones are the absence
of interrupts and events like tap detection, activity/inactivity, and
free-fall detection.
Other differences in the new parts are fewer power modes, basically
allowing only idle and measurement modes, and the removal of the 12-bit
SAR ADC path for the 3-axis signals (known as lower signal chain),
being excluisive for the temperature sensor in the ADXL318/319.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
|
|
vm_op_enqueue() allocates an msm_vm_op struct with kmalloc,
but the return value is not checked for NULL value which
can be returned by kmalloc under low-memory conditions.
This can result in NULL pointer dereference when the pointer
is dereferenced.
Add NULL check after the allocation and propagate -ENOMEM back
to the caller in case of a failure.
Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/678416/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar:
"Fix an irqchip driver release bug in the riscv-intc irqchip driver"
* tag 'irq-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/riscv-intc: Add missing free() callback in riscv_intc_domain_ops
|
|
If pm_runtime_put_sync() fails after watchdog_register_device()
succeeds, the probe function jumps to err_exit without
unregistering the watchdog device. This leaves the watchdog
registered in the subsystem while the driver fails to load,
resulting in a resource leak.
Add a new error label err_unregister_wdt to properly unregister
the watchdog device.
Fixes: 8bc22a2f1bf0 ("watchdog: starfive: Check pm_runtime_enabled() before decrementing usage counter")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
|
|
wdat_wdt_probe() calls acpi_get_table() to obtain the WDAT ACPI table but
never calls acpi_put_table() on any paths. This causes a permanent ACPI
table memory leak.
Add a single cleanup path which calls acpi_put_table() to ensure
the ACPI table is always released.
Fixes: 058dfc767008 ("ACPI / watchdog: Add support for WDAT hardware watchdog")
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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According to the manual, the Loongson-2K0300 watchdog is similar to the
Loongson-1, except for some register offsets and inconsistent register
bit definitions. Separate definitions via driver_data suffice.
Co-developed-by: Xiaochuang Mao <maoxiaochuan@loongson.cn>
Signed-off-by: Xiaochuang Mao <maoxiaochuan@loongson.cn>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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The general recommendation is to not use of_match_ptr() or CONFIG_OF
ifdef.
Drop them.
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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Remove meaningless output to simplify ls1x_wdt_probe().
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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