Previous commit missed two other places that need converting, it only
came out in tests on autobuilders now. Convert the rest of the driver.
Fixes: 68bdc4dc11 ("MIPS: alchemy: gpio: use new line value setter callbacks")
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://lore.kernel.org/r/20250727082442.13182-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The file Documentation/arch/powerpc/htm.rst is not included in the
index.rst toctree. This results in a warning when building the docs:
WARNING: document isn't included in any toctree: htm.rst
Add it to the index.rst file so that it is properly included in the
PowerPC documentation TOC.
Signed-off-by: Vishal Parmar <vishistriker@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250727110145.839906-1-vishistriker@gmail.com
Emails to alexandru.tachici@analog.com bounce permanently:
Remote Server returned '550 5.1.10 RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address lookup'
so replace him with Cedric Encarnacion from Analog.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250724113735.59148-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add support for the Texas Instruments INA228 Ultra-Precise
Power/Energy/Charge Monitor.
The INA228 is very similar to the INA238 but offers four bits of extra
precision in the temperature, voltage and current measurement fields.
It also supports energy and charge monitoring, the latter of which is
not supported through this patch.
While it seems in the datasheet that some constants such as LSB values
differ between the 228 and the 238, they differ only for those registers
where four bits of precision have been added and they differ by a factor
of 16 (VBUS, VSHUNT, DIETEMP, CURRENT).
Therefore, the INA238 constants are still applicable with regard
to the bit of the same significance.
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
Link: https://lore.kernel.org/r/20250718-ina228-v2-3-227feb62f709@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Some purely cosmetic changes in ina238.c:
- When aligning definitions, do so consistently with tab stop of 8.
- Use spaces instead of tabs around operators.
- Align wrapped lines.
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
Link: https://lore.kernel.org/r/20250718-ina228-v2-1-227feb62f709@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
SMB1 already supports querying reparse points and detecting types of
symlink, fifo, socket, block and char.
This change implements the missing part - ability to create a new reparse
points over SMB1. This includes everything which SMB2+ already supports:
- native SMB symlinks and sockets
- NFS style of special files (symlinks, fifos, sockets, char/block devs)
- WSL style of special files (symlinks, fifos, sockets, char/block devs)
Attaching a reparse point to an existing file or directory is done via
SMB1 SMB_COM_NT_TRANSACT/NT_TRANSACT_IOCTL/FSCTL_SET_REPARSE_POINT command
and implemented in a new cifs_create_reparse_inode() function.
This change introduce a new callback ->create_reparse_inode() which creates
a new reperse point file or directory and returns inode. For SMB1 it is
provided via that new cifs_create_reparse_inode() function.
Existing reparse.c code was only slightly updated to call new protocol
callback ->create_reparse_inode() instead of hardcoded SMB2+ function.
This make the whole reparse.c code to work with every SMB dialect.
The original callback ->create_reparse_symlink() is not needed anymore as
the implementation of new create_reparse_symlink() function is dialect
agnostic too. So the link.c code was updated to call that function directly
(and not via callback).
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
WSL EAs are not required for native SMB symlinks, so do not query them from server.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
When not searching for child entries with msearch wildcard pattern then ask
server just for one output entry. There is no need to ask for more entries
as we are interested only for one search result, as we are doing query on
path.
CIFSFindFirst() with msearch=false is called by the cifs_query_path_info()
function.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
To query root path (without msearch wildcard) it is needed to
send pattern '\' instead of '' (empty string).
This allows to use CIFSFindFirst() to query information about root path
which is being used in followup changes.
This change fixes the stat() syscall called on the root path on the mount.
It is because stat() syscall uses the cifs_query_path_info() function and
it can fallback to the CIFSFindFirst() usage with msearch=false.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Some servers might enforce the SPN to be set in the target info
blob (AV pairs) when sending NTLMSSP_AUTH message. In Windows Server,
this could be enforced with SmbServerNameHardeningLevel set to 2.
Fix this by always appending SPN (cifs/<hostname>) to the existing
list of target infos when setting up NTLMv2 response blob.
Cc: linux-cifs@vger.kernel.org
Cc: David Howells <dhowells@redhat.com>
Reported-by: Pierguido Lambri <plambri@redhat.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Zero-length AV pairs should be considered as valid target infos.
Don't skip the next AV pairs that follow them.
Cc: linux-cifs@vger.kernel.org
Cc: David Howells <dhowells@redhat.com>
Fixes: 0e8ae9b953 ("smb: client: parse av pair type 4 in CHALLENGE_MESSAGE")
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The handlecache code today tracks the time at which dir lease was
acquired and the laundromat thread uses that to check for old
entries to cleanup.
However, if a directory is actively accessed, it should not
be chosen to expire first.
This change adds a new last_access_time field to cfid and
uses that to decide expiry of the cfid.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
cached_dir_lease_break() has return type as int but only
returning true or false. change return type of this function
to bool for clarity.
Signed-off-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
We now do a weighted selection of server interfaces when allocating
new channels. The weights are decided based on the speed advertised.
The fulfilled weight for an interface is a counter that is used to
track the interface selection. It should be reset back to zero once
all interfaces fulfilling their weight.
In cifs_chan_update_iface, this reset logic was missing. As a result
when the server interface list changes, the client may not be able
to find a new candidate for other channels after all interfaces have
been fulfilled.
Fixes: a6d8fb54a5 ("cifs: distribute channels across interfaces based on speed")
Cc: <stable@vger.kernel.org>
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
After commit 5c70eb5c59 ("net: better track kernel sockets lifetime"),
kernel sockets now use net_passive reference counting. However, commit
95d2b9f693 ("Revert "smb: client: fix TCP timers deadlock after rmmod"")
restored the manual socket refcount manipulation without adapting to this
new mechanism, causing a memory leak.
The issue can be reproduced by[1]:
1. Creating a network namespace
2. Mounting and Unmounting CIFS within the namespace
3. Deleting the namespace
Some memory leaks may appear after a period of time following step 3.
unreferenced object 0xffff9951419f6b00 (size 256):
comm "ip", pid 447, jiffies 4294692389 (age 14.730s)
hex dump (first 32 bytes):
1b 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 80 77 c2 44 51 99 ff ff .........w.DQ...
backtrace:
__kmem_cache_alloc_node+0x30e/0x3d0
__kmalloc+0x52/0x120
net_alloc_generic+0x1d/0x30
copy_net_ns+0x86/0x200
create_new_namespaces+0x117/0x300
unshare_nsproxy_namespaces+0x60/0xa0
ksys_unshare+0x148/0x360
__x64_sys_unshare+0x12/0x20
do_syscall_64+0x59/0x110
entry_SYSCALL_64_after_hwframe+0x78/0xe2
...
unreferenced object 0xffff9951442e7500 (size 32):
comm "mount.cifs", pid 475, jiffies 4294693782 (age 13.343s)
hex dump (first 32 bytes):
40 c5 38 46 51 99 ff ff 18 01 96 42 51 99 ff ff @.8FQ......BQ...
01 00 00 00 6f 00 c5 07 6f 00 d8 07 00 00 00 00 ....o...o.......
backtrace:
__kmem_cache_alloc_node+0x30e/0x3d0
kmalloc_trace+0x2a/0x90
ref_tracker_alloc+0x8e/0x1d0
sk_alloc+0x18c/0x1c0
inet_create+0xf1/0x370
__sock_create+0xd7/0x1e0
generic_ip_connect+0x1d4/0x5a0 [cifs]
cifs_get_tcp_session+0x5d0/0x8a0 [cifs]
cifs_mount_get_session+0x47/0x1b0 [cifs]
dfs_mount_share+0xfa/0xa10 [cifs]
cifs_mount+0x68/0x2b0 [cifs]
cifs_smb3_do_mount+0x10b/0x760 [cifs]
smb3_get_tree+0x112/0x2e0 [cifs]
vfs_get_tree+0x29/0xf0
path_mount+0x2d4/0xa00
__se_sys_mount+0x165/0x1d0
Root cause:
When creating kernel sockets, sk_alloc() calls net_passive_inc() for
sockets with sk_net_refcnt=0. The CIFS code manually converts kernel
sockets to user sockets by setting sk_net_refcnt=1, but doesn't call
the corresponding net_passive_dec(). This creates an imbalance in the
net_passive counter, which prevents the network namespace from being
destroyed when its last user reference is dropped. As a result, the
entire namespace and all its associated resources remain allocated.
Timeline of patches leading to this issue:
- commit ef7134c7fc ("smb: client: Fix use-after-free of network
namespace.") in v6.12 fixed the original netns UAF by manually
managing socket refcounts
- commit e9f2517a3e ("smb: client: fix TCP timers deadlock after
rmmod") in v6.13 attempted to use kernel sockets but introduced
TCP timer issues
- commit 5c70eb5c59 ("net: better track kernel sockets lifetime")
in v6.14-rc5 introduced the net_passive mechanism with
sk_net_refcnt_upgrade() for proper socket conversion
- commit 95d2b9f693 ("Revert "smb: client: fix TCP timers deadlock
after rmmod"") in v6.15-rc3 reverted to manual refcount management
without adapting to the new net_passive changes
Fix this by using sk_net_refcnt_upgrade() which properly handles the
net_passive counter when converting kernel sockets to user sockets.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220343 [1]
Fixes: 95d2b9f693 ("Revert "smb: client: fix TCP timers deadlock after rmmod"")
Cc: stable@vger.kernel.org
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Enzo Matsumiya <ematsumiya@suse.de>
Signed-off-by: Wang Zhaolong <wangzhaolong@huaweicloud.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Use 'bool' type where it makes more sense than 'int'.
v2: Rebase due to corrected 'fbcon_cursor_blink' initial value
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Make the code more legible by adding get_{fg,bg}_color()
which hide the obscure 'is_fg' parameter of get_color()
from the caller.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Helge Deller <deller@gmx.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Invert fbcon_is_inactive() into fbcon_is_active(). Much easier
on the poor brain when you don't have to do dobule negations
all over the place.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Helge Deller <deller@gmx.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Invert fbcon_cursor_noblink into fbcon_cursor_blink so that:
- it matches the sysfs attribute exactly
- avoids having to do these NOT operations all over the place
- use bool instead of int
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Seems like someone hit 'c' when they meant to hit 'd'.
Signed-off-by: Daniel Palmer <daniel.palmer@sony.com>
Signed-off-by: Helge Deller <deller@gmx.de>
fb_add_videomode() can fail with -ENOMEM when its internal kmalloc() cannot
allocate a struct fb_modelist. If that happens, the modelist stays empty but
the driver continues to register. Add a check for its return value to prevent
poteintial null-ptr-deref, which is similar to the commit 17186f1f90 ("fbdev:
Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var").
Fixes: 1b6c79361b ("video: imxfb: Add DT support")
Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
This patch addresses various coding style issues in `svgalib.c` to improve
readability and better align the code with the Linux kernel's formatting
standards.
The changes primarily consist of:
- Adjusting whitespace around operators and after keywords.
- Standardizing brace placement for control flow statements.
- Removing unnecessary braces on single-statement if/else blocks.
- Deleting extraneous blank lines throughout the file.
These changes are purely stylistic and introduce no functional modifications.
Signed-off-by: Darshan R. <rathod.darshan.0896@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Replace the manual pci_ioremap_wc() call for mapping screen memory with the
device-managed devm_ioremap_wc() variant.
This simplifies the driver's resource management by ensuring the memory is
automatically unmapped when the driver detaches from the device.
Signed-off-by: Giovanni Di Santi <giovanni.disanti.lkl@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Replace the manual ioremap() call for the MMIO registers with the
device-managed devm_ioremap() variant.
This simplifies the driver's resource management by ensuring the memory is
automatically unmapped when the driver detaches from the device.
Signed-off-by: Giovanni Di Santi <giovanni.disanti.lkl@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
The kyro framebuffer driver did not request its PCI memory regions,
which could lead to conflicts with other drivers. This change
addresses the task "Request memory regions in all fbdev drivers"
from the file Documentation/gpu/todo.rst.
This is addressed by using the managed device functions pcim_enable_device()
and pcim_request_all_regions(). This simplifies the code by making error
handling and driver removal cleanup automatic for these resources.
Signed-off-by: Giovanni Di Santi <giovanni.disanti.lkl@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.
The error handling is a bit different. "memory-region" is optional, so
failed lookup is not an error. But then an error in
of_address_to_resource() is treated as an error. However, that
distinction is not really important. Either the region is available
and usable or it is not. So now, it is just
of_reserved_mem_region_to_resource() which is checked for an error.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Helge Deller <deller@gmx.de>
The current implementation may lead to buffer overflow when:
1. Unregistration creates NULL gaps in registered_fb[]
2. All array slots become occupied despite num_registered_fb < FB_MAX
3. The registration loop exceeds array bounds
Add boundary check to prevent registered_fb[FB_MAX] access.
Signed-off-by: Yongzhen Zhang <zhangyongzhen@kylinos.cn>
Signed-off-by: Helge Deller <deller@gmx.de>
Now that ARCH=um no longer has IO port accesses, this driver
can no longer build as-is. Make the IO port calls not just
conditional on i386 but also !UML.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Helge Deller <deller@gmx.de>
During the bounds refinement, we improve the precision of various ranges
by looking at other ranges. Among others, we improve the following in
this order (other things happen between 1 and 2):
1. Improve u32 from s32 in __reg32_deduce_bounds.
2. Improve s/u64 from u32 in __reg_deduce_mixed_bounds.
3. Improve s/u64 from s32 in __reg_deduce_mixed_bounds.
In particular, if the s32 range forms a valid u32 range, we will use it
to improve the u32 range in __reg32_deduce_bounds. In
__reg_deduce_mixed_bounds, under the same condition, we will use the s32
range to improve the s/u64 ranges.
If at (1) we were able to learn from s32 to improve u32, we'll then be
able to use that in (2) to improve s/u64. Hence, as (3) happens under
the same precondition as (1), it won't improve s/u64 ranges further than
(1)+(2) did. Thus, we can get rid of (3).
In addition to the extensive suite of selftests for bounds refinement,
this patch was also tested with the Agni formal verification tool [1].
Additionally, Eduard mentioned:
The argument appears to be as follows:
Under precondition `(u32)reg->s32_min <= (u32)reg->s32_max`
__reg32_deduce_bounds produces:
reg->u32_min = max_t(u32, reg->s32_min, reg->u32_min);
reg->u32_max = min_t(u32, reg->s32_max, reg->u32_max);
And then first part of __reg_deduce_mixed_bounds assigns:
a. reg->umin umax= (reg->umin & ~0xffffffffULL) | max_t(u32, reg->s32_min, reg->u32_min);
b. reg->umax umin= (reg->umax & ~0xffffffffULL) | min_t(u32, reg->s32_max, reg->u32_max);
And then second part of __reg_deduce_mixed_bounds assigns:
c. reg->umin umax= (reg->umin & ~0xffffffffULL) | (u32)reg->s32_min;
d. reg->umax umin= (reg->umax & ~0xffffffffULL) | (u32)reg->s32_max;
But assignment (c) is a noop because:
max_t(u32, reg->s32_min, reg->u32_min) >= (u32)reg->s32_min
Hence RHS(a) >= RHS(c) and umin= does nothing.
Also assignment (d) is a noop because:
min_t(u32, reg->s32_max, reg->u32_max) <= (u32)reg->s32_max
Hence RHS(b) <= RHS(d) and umin= does nothing.
Plus the same reasoning for the part dealing with reg->s{min,max}_value:
e. reg->smin_value smax= (reg->smin_value & ~0xffffffffULL) | max_t(u32, reg->s32_min_value, reg->u32_min_value);
f. reg->smax_value smin= (reg->smax_value & ~0xffffffffULL) | min_t(u32, reg->s32_max_value, reg->u32_max_value);
vs
g. reg->smin_value smax= (reg->smin_value & ~0xffffffffULL) | (u32)reg->s32_min_value;
h. reg->smax_value smin= (reg->smax_value & ~0xffffffffULL) | (u32)reg->s32_max_value;
RHS(e) >= RHS(g) and RHS(f) <= RHS(h), hence smax=,smin= do nothing.
This appears to be correct.
Also, Shung-Hsi:
Beside going through the reasoning, I also played with CBMC a bit to
double check that as far as a single run of __reg_deduce_bounds() is
concerned (and that the register state matches certain handwavy
expectations), the change indeed still preserve the original behavior.
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://github.com/bpfverif/agni [1]
Link: https://lore.kernel.org/bpf/aIJwnFnFyUjNsCNa@mail.gmail.com
The rework of this mechanism added a 'use_nsec' member to struct
system_counterval. get_device_system_crosststamp() instantiates that
struct on the stack and hands a pointer to the driver callback.
Only the drivers which set use_nsec to true, initialize that field, but
all others ignore it. As get_device_system_crosststamp() does not
initialize the struct, the use_nsec field contains random stack content
in those cases. That causes a miscalulation usually resulting in a
failing range check in the best case.
Initialize the structure before handing it to the drivers to cure that.
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Merge tag 'timers-urgent-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix for the PTP systemcounter mechanism:
The rework of this mechanism added a 'use_nsec' member to struct
system_counterval. get_device_system_crosststamp() instantiates that
struct on the stack and hands a pointer to the driver callback.
Only the drivers which set use_nsec to true, initialize that field,
but all others ignore it. As get_device_system_crosststamp() does not
initialize the struct, the use_nsec field contains random stack
content in those cases. That causes a miscalulation usually resulting
in a failing range check in the best case.
Initialize the structure before handing it to the drivers to cure
that"
* tag 'timers-urgent-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Zero initialize system_counterval when querying time from phc drivers
Use min() to simplify ocs_create_linked_list_from_sg() and improve its
readability.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Perform DMA unmapping operations before processing data.
Otherwise, there may be unsynchronized data accessed by
the CPU when the SWIOTLB is enabled.
Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The function adf_dev_autoreset() is only used within adf_aer.c and does
not need to be exposed outside the compilation unit. Make it static and
remove it from the header adf_common_drv.h.
This does not introduce any functional change.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
A number of functions in this file have large structures on the stack,
ccp_run_aes_gcm_cmd() being the worst, in particular when KASAN
is enabled on gcc:
drivers/crypto/ccp/ccp-ops.c: In function 'ccp_run_sha_cmd':
drivers/crypto/ccp/ccp-ops.c:1833:1: error: the frame size of 1136 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
drivers/crypto/ccp/ccp-ops.c: In function 'ccp_run_aes_gcm_cmd':
drivers/crypto/ccp/ccp-ops.c:914:1: error: the frame size of 1632 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
Avoid the issue by using dynamic memory allocation in the worst one
of these.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Refactor the functions `adf_ring_start()` and `adf_ring_next()` to
improve readability.
This does not introduce any functional change.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The `adf_ring_next()` function in the QAT debug transport interface
fails to correctly update the position index when reaching the end of
the ring elements. This triggers the following kernel warning when
reading ring files, such as
/sys/kernel/debug/qat_c6xx_<D:B:D:F>/transport/bank_00/ring_00:
[27725.022965] seq_file: buggy .next function adf_ring_next [intel_qat] did not update position index
Ensure that the `*pos` index is incremented before returning NULL when
after the last element in the ring is found, satisfying the seq_file API
requirements and preventing the warning.
Fixes: a672a9dc87 ("crypto: qat - Intel(R) QAT transport code")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
QAT devices perform an additional integrity check during compression by
decompressing the output. Starting from QAT GEN4, this verification is
done in-line by the hardware. However, on GEN2 devices, the hardware
reads back the compressed output from the destination buffer and performs
a decompression operation using it as the source.
In the current QAT driver, destination buffers are always marked as
write-only. This is incorrect for QAT GEN2 compression, where the buffer
is also read during verification. Since commit 6f5dc76580
("iommu/vt-d: Restore WO permissions on second-level paging entries"),
merged in v6.16-rc1, write-only permissions are strictly enforced, leading
to DMAR errors when using QAT GEN2 devices for compression, if VT-d is
enabled.
Mark the destination buffers as DMA_BIDIRECTIONAL. This ensures
compatibility with GEN2 devices, even though it is not required for
QAT GEN4 and later.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Fixes: cf5bb835b7 ("crypto: qat - fix DMA transfer direction")
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use touch-overlay to support overlay objects such as buttons and a
resized frame defined in the device tree.
A key event will be generated if the coordinates of a touch event are
within the area defined by the button properties.
Reviewed-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Link: https://lore.kernel.org/r/20241016-feature-ts_virtobj_patch-v11-4-b292a1bbb0a1@wolfvision.net
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The touch-overlay feature adds support for segments (touch areas) on the
touchscreen surface that represent overlays with clipped touchscreen
areas and printed buttons.
Add nodes for a clipped touchscreen and overlay buttons to the existing
example.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Link: https://lore.kernel.org/r/20241016-feature-ts_virtobj_patch-v11-3-b292a1bbb0a1@wolfvision.net
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Some touch devices provide mechanical overlays with different objects
like buttons or clipped touchscreen surfaces.
In order to support these objects, add a series of helper functions
to the input subsystem to transform them into overlay objects via
device tree nodes.
These overlay objects consume the raw touch events and report the
expected input events depending on the object properties.
Note that the current implementation allows for multiple definitions
of touchscreen areas (regions that report touch events), but only the
first one will be used for the touchscreen device that the consumers
typically provide.
Should the need for multiple touchscreen areas arise, additional
touchscreen devices would be required at the consumer side.
There is no limitation in the number of touch areas defined as buttons.
Reviewed-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Link: https://lore.kernel.org/r/20241016-feature-ts_virtobj_patch-v11-2-b292a1bbb0a1@wolfvision.net
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The touch-overlay encompasses a number of touch areas that define a
clipped touchscreen area and/or buttons with a specific functionality.
A clipped touchscreen area avoids getting events from regions that are
physically hidden by overlay frames.
For touchscreens with printed overlay buttons, sub-nodes with a suitable
key code can be defined to report key events instead of the original
touch events.
Reviewed-by: Jeff LaBundy <jeff@labundy.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Link: https://lore.kernel.org/r/20241016-feature-ts_virtobj_patch-v11-1-b292a1bbb0a1@wolfvision.net
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Currently only F23 is correctly mapped for PS/2 keyboards.
According to this table:
https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/translate.pdf
- F24 and Zenkaku/Hankaku share the same scancode, but since in real world
Zenkaku/Hankaku keys seem to just use the tilde scancode, this patch binds the
scancode to F24. Note that on userspace side the KEY_ZENKAKUHANKAKU keycode is
currently not bound in xkeyboard-config, so it is (mostly*) unused anyway.
* Qt on Wayland and therefore KDE on Wayland can see the keypress anyway for
some reason and it is actually used in a touchpad toggle shortcut, but this is
currently being fixed in both KDE and xkeyboard-config to make this less weird,
so it could directly be fixed to correctly handle the F24 keypress instead.
- The scancodes for F13-F22 are currently unmapped so there will probably be no
harm in mapping them. This would also fix the issue that some of these keys
can't be mapped as the target from userspace using the `setkeycodes` command.
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Link: https://lore.kernel.org/r/20250722120438.28011-1-wse@tuxedocomputers.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Many controllers these days have started including grip buttons. As
there has been no particular assigned BTN_* constants for these, they've
been haphazardly assigned to BTN_TRIGGER_HAPPY*. Unfortunately, the
assignment of these has varied significantly between drivers.
Add and document new constants for these grip buttons.
Signed-off-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/20250702040102.125432-2-vi@endrift.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Since dance pads can have both up/down or left/right pressed at the same time,
by design, they are not suitable for mapping the buttons to axes. Historically,
this driver mapped the D-pad to BTN_TRIGGER_HAPPY1-4 in these cases, and before
that as mouse buttons. However, BTN_DPAD_* exists for this and makes far more
sense than the arbitrary mapping it was before.
Signed-off-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/20250702034740.124817-1-vi@endrift.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
