There is a data race in reading the STATS registers, resulting in wrong
data being read. When the data in the RECENT register switches between
0x24F0 and 0x2500, occasionally value 0x2400 or 0x25F0 is read. This
happens when the value is updated in between reading MSB and LSB.
The data sheet says: "Until a new conversion result is available,
previous values can be read from the statistics registers. Before
reading the statistics registers, set STATS_EN to 0 to prevent any
updates to this register block." As the STATS_EN is currently not
cleared, the values of the stats registers might change mid read,
giving faulty values.
Disable the STATS_EN bit before reading one of the statistics registers to
make sure the device does not update the register mid read. This is
applicable to registers MAX_CHn_xSB, MIN_CHn_xSB and RECENT_CHn_xSB.
This means reading one of the statistics registers resets the MAX and
MIN registers. This is unfortunate, but necessary to get correct data
from the device.
Signed-off-by: Paul Geurts <paul.geurts@prodrive-technologies.com>
Fixes: 024b08fee3 ("iio: adc: Add driver for ADS7128 / ADS7138")
Reviewed-by: David Lechner <dlechner@baylibre.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Platform devices using the split approach of calling
platform_device_alloc() and platform_device_add() must not assign the
firmware nodes manually but use the provided
platform_device_set_fwnode() function which additionally makes sure we
track the reference count of the firmware node correctly.
Replace the manual assignment of the firmware node with a call to
platform_device_set_fwnode().
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Acked-by: Sudeep Holla <sudeep.holla@kernel.org>
Link: https://patch.msgid.link/20260728-acpi-arm64-pdev-set-fwnode-v1-2-b5aff9b2235a@oss.qualcomm.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Platform devices using the split approach of calling
platform_device_alloc() and platform_device_add() must not assign the
firmware nodes manually but use the provided
platform_device_set_fwnode() function which additionally makes sure we
track the reference count of the firmware node correctly.
Replace the manual assignment of the firmware node with a call to
platform_device_set_fwnode().
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Acked-by: Sudeep Holla <sudeep.holla@kernel.org>
Link: https://patch.msgid.link/20260728-acpi-arm64-pdev-set-fwnode-v1-1-b5aff9b2235a@oss.qualcomm.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Syzkaller reported a storage null-ptr-deref issue after replacing prog.
This occurs in the following scenario:
1. prog A, an empty prog, is attached to a cgrp.
2. prog B uses BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE and calls the
bpf_get_local_storage helper.
3. link_update is called to replace prog A with prog B.
The reason is that __cgroup_bpf_replace fails to alloc and assign the
required cgrp storage for the incoming replacement prog. Consequently,
the new prog inherits an uninit storage, leading to null-ptr-deref panic
when kick the new prog.
Fix this by rejecting a link update if new_prog's cgroup storage is
incompatible with link->prog.
Fixes: 0c991ebc8c ("bpf: Implement bpf_prog replacement for an active bpf_cgroup_link")
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/bpf/20260728132336.2857800-1-pulehui@huaweicloud.com [0]
Link: https://lore.kernel.org/bpf/f87b53c0-8f00-45a6-82db-8242fa9b143f@huaweicloud.com [1]
Link: https://lore.kernel.org/bpf/20260807104403.1013064-1-pulehui@huaweicloud.com
core:
- HCI: Add support for Shorter Connection Interval (SCI) feature
- af_bluetooth: Add minimal context analysis annotations
drivers:
- btusb: Add ASUS USB-BT540 for Realtek 8761CU
- btusb: Add ASUS USB-BT600 for Realtek 8761CU
- btusb: Add USB ID 13d3:3625 for MediaTek MT7922
- btusb: Add support for 1357:c123 Realtek 8852BE device
- btusb: Add new VID/PID 0x0489/0xe156 for MT7902
- btintel: Add Bluetooth SAR revision 2 support
- btintel_pcie: Add vendor_reset PCI sysfs for PLDR
- btnxpuart: Add M.2 Bluetooth device support using pwrseq
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Merge tag 'for-net-next-2026-08-07' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:
====================
bluetooth-next pull request for net-next:
core:
- HCI: Add support for Shorter Connection Interval (SCI) feature
- af_bluetooth: Add minimal context analysis annotations
drivers:
- btusb: Add ASUS USB-BT540 for Realtek 8761CU
- btusb: Add ASUS USB-BT600 for Realtek 8761CU
- btusb: Add USB ID 13d3:3625 for MediaTek MT7922
- btusb: Add support for 1357:c123 Realtek 8852BE device
- btusb: Add new VID/PID 0x0489/0xe156 for MT7902
- btintel: Add Bluetooth SAR revision 2 support
- btintel_pcie: Add vendor_reset PCI sysfs for PLDR
- btnxpuart: Add M.2 Bluetooth device support using pwrseq
* tag 'for-net-next-2026-08-07' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (84 commits)
Bluetooth: RFCOMM: take rfcomm_mutex for the deferred setup accept
Bluetooth: MSFT: validate evt_prefix_len against the response length
Bluetooth: ISO: zero the sockaddr before returning it in getname
Bluetooth: ISO: do not force BT_LISTEN after a failed BIG sync
Bluetooth: hci_sync: Disable legacy instance's ext adv before setup snapshot
Bluetooth: hci_event: fix out-of-bounds read in LE PA report reassembly
Bluetooth: btmtksdio: fix usage_count leak when autosuspend_delay is negative
Bluetooth: MGMT: reject HCI_CMD_SYNC params_len above 255
Bluetooth: btnxpuart: Add M.2 Bluetooth device support using pwrseq
Bluetooth: MGMT: free the HCI command when it is cancelled
Bluetooth: MGMT: free the mesh send cancel command when it is cancelled
Bluetooth: hci_sync: free the advertising instance on the failure and cancel paths
Bluetooth: hci_conn: fix the SCO setup context lifetime
Bluetooth: hci_sync: Fix accept list UAF during suspend
Bluetooth: hci_event: Use 255 as max event payload length in hci_ev_table[]
Bluetooth: hci_event: Introduce handle_ev_vendor() for HCI_EV_VENDOR
Bluetooth: btnxpuart: Simplify nxp_set_ind_reset() by __hci_reset_dev()
Bluetooth: hci_core: Introduce __hci_reset_dev() with a hardware error code
Bluetooth: coredump: Expose header size and end marker to drivers
Bluetooth: btintel: Remove redundant (hdr->plen > 0) in btintel_recv_event()
...
====================
Link: https://patch.msgid.link/20260807200215.982570-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When cookie authentication is disabled, COOKIE_ECHO restores fixed-size
AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM
length, HMAC list, or CHUNKS list can then reach association consumers
with lengths or identifiers that were never validated against the local
backing arrays.
A forged RANDOM length can cause out-of-bounds reads during key-vector
construction. A forged HMAC identifier also caused a 32-byte write past
a zero-length AUTH chunk, providing a primitive for a local privilege
escalation chain.
Validate the cookie's RANDOM, HMACS, and CHUNKS parameters at the cookie
trust boundary before copying them into the association. Reject invalid
types, malformed lengths, unsupported HMAC identifiers, HMAC lists
without SHA1, and forbidden chunk ids.
Fixes: bbd0d59809 ("[SCTP]: Implement the receive and verification of AUTH chunk")
Fixes: 1f485649f5 ("[SCTP]: Implement SCTP-AUTH internals")
Signed-off-by: Jérémy Jean <Jeremy.Jean@oss.cyber.gouv.fr>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/20260804200042.2412009-1-Jeremy.Jean@oss.cyber.gouv.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit 48d84310be ("ASoC: fsl_easrc: Use guard() for spin locks")
refactored fsl_easrc_runtime_resume() but accidentally dropped the
early return on the success path. The original code had a skip_load
label followed by "return 0"; that label was removed during cleanup
but the corresponding success return was lost too.
As a result, every successful resume falls through into the
disable_mem_clk error path and calls clk_disable_unprepare() on a
clock that is still in use, leading to an unbalanced clock disable.
Restore the missing "return 0" before the disable_mem_clk error label.
Fixes: 48d84310be ("ASoC: fsl_easrc: Use guard() for spin locks")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20260807072202.380021-1-shengjiu.wang@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
On a multi-device setup, submit_flush_wait() walked the dirty devices
in order and aborted the whole loop on the first device whose flush
failed, leaving the remaining dirty devices un-flushed. Each device
still needs its own data made durable, so a failure on one device must
not skip the others. It also waited for one device's flush to complete
before issuing the next, even though the devices have independent
flush queues and could be flushed concurrently.
Flush every dirty device best-effort and in parallel instead: build
one PREFLUSH bio per dirty device, submit them all, then wait for
every completion, returning the first error seen (0 if all succeed).
This bounds the flush window by the slowest device rather than the sum
of all of them. No caller depends on the previous early-abort
behaviour -- fsync only checks whether the return value is zero
(fs/f2fs/file.c). The checkpoint path (f2fs_flush_device_cache) is
unaffected; this only touches the fsync flush path.
The per-device bio/completion array is small and bounded (at most
MAX_DEVICES entries), so allocate it with __GFP_NOFAIL rather than
keeping a separate serial fallback path for allocation failure.
Signed-off-by: Yonggil Song <yonggil.song@samsung.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
So that we can know in which path we may missed to account the
reference correclty: normal path or error handling path.
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
CONFIG_MULTIPLEXER can only be enabled indirectly. If it's not already
enabled, then CONFIG_PINCTRL_GENERIC_MUX cannot be selected at all in
menuconfig. That's because it depends on MULTIPLEXER.
Follow similar consumers of the multiplexer core and select MULTIPLEXER
instead. This way the driver will be visible in menuconfig as long as
PINCTRL is selected.
Fixes: 34acc5a8ad ("pinctrl: add generic board-level pinctrl driver using mux framework")
Signed-off-by: Alvin Šipraga <alvin.sipraga@analog.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Merge updates related to system sleep handling and runtime PM, a power
capping update, and power management tools updates for 7.3-rc1:
- Rename the PM core module parameter prefix to "pm" and allow the PM
transition (DPM) watchdog to be disabled by default (Tzung-Bi Shih)
- Fix off-by-one in wakelocks number limit check in the system sleep
sysfs interface (Haowen Tu)
- Remove kernel-doc markings from helper descriptions in the core
hibernation code (Adi Nata)
- Use %pe to print error pointer values in the hibernation core (Ronan
Marchal)
- Fix memory leak in snapshot_write_next() error path (Malaya Kumar
Rout)
- Delay allocating and linking the next swap_map_page in the
hibernation image saving code until another image page actually
needs to be recorded (Haesung Kim)
- Stop setting runtime_error on runtime resume callback failures to
allow drivers to recover from resume issues (Praveen Talari)
- Handle PMU registration failure during probe in the intel_rapl_tpmi
driver (Sumeet Pawnikar)
- Avoid optional imports in intel_pstate_tracer unless they are really
needed (Yousef Alhouseen)
- Add generic CPPC performance display to the cpupower utility, build
and call CPPC information on non-AMD processors, make cpupower print
kernel and hardware frequency information, and add libm to cpupower
for generic CPPC view (Jeremy Linton)
- Remove conditional return with no effect from cpupower (Sang-Heon
Jeon)
* pm-sleep:
PM: sleep: Allow disabling DPM watchdog by default
PM: sleep: Rename module parameters prefix to "pm"
PM: hibernate: swap: defer linking the next map page
PM: hibernate: Fix memory leak in snapshot_write_next() error path
PM: hibernate: Use %pe to print error pointer values
PM: hibernate: Remove kernel-doc markings from helper descriptions
PM: sleep: Fix off-by-one in wakelocks number limit check
* pm-runtime:
PM: runtime: Only set runtime_error on suspend callback failures
* pm-powercap:
powercap: intel_rapl_tpmi: Handle PMU registration failure during probe
* pm-tools:
cpupower: remove conditional return with no effect
tools/power: intel_pstate_tracer: avoid optional imports for help
cpupower: Add libm to cpupower for generic CPPC view
cpupower: Print kernel and hardware frequency information
cpupower: Build and call CPPC information on non-AMD processors
cpupower: Add generic CPPC performance display
Merge updates of the thermal core, thermal drivers for Intel platforms
and the thermometer utility for 7.3-rc1:
- Use sysfs_emit_at() in trans_table_show() (Thorsten Blum)
- Remove hwmon class devices created for thermal zones when the thermal
zone devices holding them are removed (Rafael Wysocki)
- Add support for the Directed Package-level Thermal Interrupt to
the Intel thermal throttling driver to allow package-level thermal
interrupts to go to one specific CPU in a processor package instead
of going to all of the CPUs in it (Ricardo Neri)
- Clean up RFIM groups on DVFS failure and clean up ODVP on probe
failures in the int340x thermal driver (Pengpeng Hou)
- Remove redundant dev_err() from the int340x thermal driver and the
bxt_pmic driver (Pan Chuang)
- Simplify ptc_temperature_write() in the int340x thermal driver by
using kstrtou32_from_user() (Dmitry Antipov)
- Close fd on realloc() failure in the thermometer utility (Amarjeet)
* thermal-core:
thermal: sysfs: Use sysfs_emit_at() in trans_table_show()
* thermal-hwmon:
thermal: hwmon: Remove hwmon class device along with its parent
* thermal-intel:
thermal: intel: int340x: simplify ptc_temperature_write()
thermal: intel: bxt_pmic: Remove redundant dev_err()
thermal: intel: int340x: Remove redundant dev_err()
thermal: intel: int3400: clean up ODVP on probe failures
thermal: intel: int340x: clean up RFIM groups on DVFS failure
thermal: intel: Add a syscore shutdown callback for kexec reboot
thermal: intel: Add syscore callbacks for suspend and resume
thermal: intel: Enable the Directed Package-level Thermal Interrupt
thermal: intel: Add resources to handle directed package-level thermal interrupts
x86/thermal: Add bit definitions for Intel Directed Package Thermal Interrupt
* thermal-tools:
tools/thermal/thermometer: close fd on realloc() failure
rfcomm_sock_recvmsg() completes a deferred setup by calling
rfcomm_dlc_accept() without holding any RFCOMM lock:
if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
rfcomm_dlc_accept(d);
return 0;
}
and rfcomm_dlc_accept() dereferences the session on its first line:
struct sock *sk = d->session->sock->sk;
Every other path that touches d->session runs under rfcomm_mutex:
rfcomm_dlc_open(), rfcomm_dlc_close(), rfcomm_dlc_exists(),
rfcomm_dlc_send_rpn(), and the RFCOMM thread through
rfcomm_process_sessions(). rfcomm_connect_ind() is even documented as
"called under rfcomm_lock()". This call site is the only one that skips
it.
The RFCOMM_DEFER_SETUP bit looks like it serialises the accept against
teardown, since __rfcomm_dlc_close() returns early when it wins the
test_and_clear. But rfcomm_recv_disc() forces the state first:
d->state = BT_CLOSED;
__rfcomm_dlc_close(d, err);
and the early return only covers BT_CONNECT, BT_CONFIG, BT_OPEN and
BT_CONNECT2. With the state already BT_CLOSED that switch does not
match, the bit is never consulted, and __rfcomm_dlc_close() falls
through to rfcomm_dlc_unlink(), which sets d->session = NULL.
So a remote DISC on a deferred dlc clears the session while leaving
RFCOMM_DEFER_SETUP set. The next recvmsg() then passes the
test_and_clear and dereferences a NULL session. No timing window is
needed: once the DISC has been processed, the dereference is
unconditional.
Give rfcomm_dlc_accept() the same shape as rfcomm_dlc_open() and
rfcomm_dlc_close(): an exported wrapper that takes rfcomm_mutex and
re-checks the session, around a __rfcomm_dlc_accept() that the two
in-core callers, which already hold the mutex, keep using.
Reproduced on a KASAN + PROVE_LOCKING kernel with a BR/EDR peer emulated
over /dev/vhci: the peer brings up an ACL link, opens L2CAP on the
RFCOMM PSM, starts a session, opens a dlc on a channel bound with
BT_DEFER_SETUP, and sends DISC after the socket is accepted. recv() on
the accepted socket then hits:
Oops: general protection fault
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
RIP: 0010:rfcomm_dlc_accept+0x54/0x350
Call Trace:
rfcomm_sock_recvmsg+0x1cd/0x230
sock_recvmsg+0x166/0x1c0
__sys_recvfrom+0x20d/0x300
0x10 is the offset of sock in struct rfcomm_session. With this patch the
same run completes with recv() returning 0 and no report, and lockdep
stays quiet, confirming rfcomm_mutex is still taken before lock_sock on
this path as it is on the thread side.
Fixes: bb23c0ab82 ("Bluetooth: Add support for deferring RFCOMM connection setup")
Cc: stable@vger.kernel.org
Signed-off-by: Ali Ahmet Memis <ali@iusegentoo.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
read_supported_features() only checks that the response covers the fixed
part of struct msft_rp_read_supported_features, which is 11 bytes:
if (skb->len < sizeof(*rp)) {
bt_dev_err(hdev, "MSFT supported features length mismatch");
goto failed;
}
evt_prefix[] is a flexible array member and rp->evt_prefix_len is an
unvalidated u8 taken straight out of that response, so
msft->evt_prefix = kmemdup(rp->evt_prefix, rp->evt_prefix_len,
GFP_KERNEL);
copies up to 255 bytes from a reply that may have carried none of them.
What is copied is data the controller never sent, and it is then used to
match incoming vendor events in msft_vendor_evt().
This is not an out-of-bounds access. An skb data allocation always has
at least SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) bytes past the
payload, which is more than the 255 byte maximum, so the read stays
inside the allocation and KASAN does not report it. It is still a read
of bytes the host was never given, with the length fully controlled by
the controller.
Reject a response that is too short for the prefix it declares.
Verified with an emulated controller over /dev/vhci on a KASAN kernel,
with vhci made to advertise an MSFT opcode the way btintel, btqca, btmtk
and btrtl do unconditionally. A reply of exactly 11 bytes declaring
evt_prefix_len = 255 reaches kmemdup and copies 255 bytes
("skb->len=11 evt_prefix_len=255", with the copied buffer dumped); since
the reply ends at the fixed part, all 255 come from past the end of the
response. No KASAN report is produced, as expected from the allocation
slack described above. With this patch the response is rejected with
"MSFT event prefix length mismatch" and msft->evt_prefix is left unset.
Fixes: 145373cb1b ("Bluetooth: Add framework for Microsoft vendor extension")
Signed-off-by: Ali Ahmet Memis <ali@iusegentoo.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
iso_sock_getname() fills a struct sockaddr_iso in place and returns its
size without clearing it first, so bytes it does not write are copied to
user space from the kernel stack. The getsockname(2) and getpeername(2)
paths both run through do_getsockname(), which hands getname() an
uninitialized sockaddr_storage on the stack and copies back up to the
number of bytes getname() returns, so the driver has to initialize every
byte it accounts for.
Two ranges are left uninitialized:
- struct sockaddr_iso is 10 bytes but only 9 are written (family,
iso_bdaddr, iso_bdaddr_type), leaking the trailing pad byte on every
call.
- for a broadcast peer (BIS_LINK or PA_LINK) the returned length grows
by sizeof(struct sockaddr_iso_bc), but only bc_sid, bc_num_bis and
bc_bis are filled; bc_bdaddr and bc_bdaddr_type, the first 7 bytes of
that structure, are never written.
An unprivileged process can open a BTPROTO_ISO socket and reach the pad
leak with getsockname(); the broadcast leak needs an established BIS/PA
connection. l2cap and rfcomm already memset their sockaddr in getname
for the same reason; do the same here.
Fixes: ccf74f2390 ("Bluetooth: Add BTPROTO_ISO socket type")
Fixes: 0a766a0aff ("Bluetooth: ISO: Fix getpeername not returning sockaddr_iso_bc fields")
Cc: stable@vger.kernel.org
Signed-off-by: Ali Ahmet Memis <ali@iusegentoo.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
iso_sock_recvmsg() handles the deferred setup of a broadcast sink by
dropping the socket lock, calling iso_conn_big_sync() and taking the
lock again:
release_sock(sk);
iso_conn_big_sync(sk);
lock_sock(sk);
sk->sk_state = BT_LISTEN;
The state is written unconditionally, but iso_conn_big_sync() returns
void and has paths that do nothing at all: hci_get_route() may fail, and
after re-acquiring the socket lock the connection may already be gone,
in which case it bails out without ever issuing an LE BIG Create Sync.
While the lock is dropped the connection can be torn down, for example
when the controller reports HCI_EV_LE_PA_SYNC_LOST:
hci_le_pa_sync_lost_evt()
hci_disconn_cfm() -> iso_disconn_cfm() -> iso_conn_del()
iso_chan_del()
iso_pi(sk)->conn = NULL
sk->sk_state = BT_CLOSED
sock_set_flag(sk, SOCK_ZAPPED)
iso_conn_big_sync() then finds conn == NULL and returns, but the caller
still overwrites the BT_CLOSED that iso_chan_del() has just set. The
socket ends up marked BT_LISTEN with no connection, so recvmsg() reports
success for a setup that never happened and a later accept() waits for
BIS connections that can never arrive instead of failing.
A concurrent shutdown() reaches the same write by another route:
__iso_sock_close() takes the BT_CONNECT2 PA sync path to
iso_sock_disconn(), which sets BT_DISCONN but leaves conn and
conn->hcon in place, so iso_conn_big_sync() succeeds and BT_LISTEN is
written over BT_DISCONN. Both the BT_CONNECT2 and the BT_CONNECTED case
write the state the same way.
Let iso_conn_big_sync() report whether the BIG sync was started, and
only move the socket to BT_LISTEN when it was and when the state has not
changed while the lock was dropped, mirroring what the BT_CONNECT case
of the same switch already does with iso_connect_cis(). Both conditions
are needed, the error alone does not cover the shutdown() race.
This corrupts the socket state machine only, it is not a memory safety
issue. KASAN and lockdep stayed quiet in all of the runs below.
Reproduced with an emulated controller over /dev/vhci on a KASAN +
PROVE_LOCKING kernel. A PA sync broadcast sink socket is driven to
BT_CONNECT2 and recvmsg() on it is raced against teardown, with a debug
delay inside the lock-dropped section to widen the window:
- HCI_EV_LE_PA_SYNC_LOST injected: 64 of 64 rounds left the socket in
BT_LISTEN with the connection gone, recvmsg() returned 0 and accept()
on that fd returned EAGAIN, which iso_sock_accept() can only do while
the socket is BT_LISTEN. With this patch, 0 of 64, recvmsg() returns
an error and accept() returns EBADFD.
- shutdown() instead of a controller event: 24 of 32 rounds wedged in
BT_LISTEN, 0 of 32 with this patch. With only the error check in
place and a short window, one round still wedged while recvmsg()
returned 0, which is the case the state re-check covers.
An unraced control round behaves the same before and after: recvmsg()
returns 0, the socket reaches BT_LISTEN and an LE BIG Create Sync is
issued.
Fixes: 7a17308c17 ("Bluetooth: iso: Fix circular lock in iso_conn_big_sync")
Cc: stable@vger.kernel.org
Signed-off-by: Ali Ahmet Memis <ali@iusegentoo.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_setup_ext_adv_instance_sync(...) only disabled
HCI_OP_LE_SET_EXT_ADV_ENABLE before setup snapshot in case of non-legacy
instances (instance > 0) and never disabled the same for legacy instance
(instance == 0). This would lead to failure in setting ext adv params
with HCI_ERROR_COMMAND_DISALLOWED (0x0c) error like below, when toggling
the discoverable/connectable property of a controller with advertising
enabled.
```
$ btmgmt advertising off
hci0 Set Advertising complete, settings: powered ssp br/edr le
secure-conn wide-band-speech cis-central cis-peripheral
$ btmgmt connectable on
hci0 Set Connectable complete, settings: powered connectable ssp br/edr
le secure-conn wide-band-speech cis-central cis-peripheral
$ btmgmt connectable off
hci0 Set Connectable complete, settings: powered ssp br/edr le
secure-conn wide-band-speech cis-central cis-peripheral
$ btmgmt advertising on
hci0 Set Advertising complete, settings: powered connectable ssp br/edr
le advertising secure-conn wide-band-speech cis-central cis-peripheral
$ btmgmt connectable on
Set Connectable for hci0 failed with status 0x0a (Busy)
$ btmgmt connectable off
Set Connectable for hci0 failed with status 0x0a (Busy)
$ dmesg
...
[ 21.970527] hci0: Opcode 0x2036
[ 21.970529] hci0: opcode 0x2036 plen 25
[ 21.970537] hci0: skb len 28
[ 21.970539] hci0: length 1
[ 21.976099] hci0: result 0x0c
[ 21.976105] hci0: end: err -16
[ 21.976114] Bluetooth: hci0: Opcode 0x2036 failed: -16
```
Signed-off-by: Muhammad Saheed <muhammad.saheed.iam@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_le_per_adv_report_evt() is dispatched with a minimum length of
sizeof(struct hci_ev_le_per_adv_report), which only covers the fixed
part of the event and not the trailing data[] array:
struct hci_ev_le_per_adv_report {
__le16 sync_handle;
__u8 tx_power;
__u8 rssi;
__u8 cte_type;
__u8 data_status;
__u8 length;
__u8 data[];
} __packed;
The handler notifies the ISO layer via hci_proto_connect_ind(), which
reaches iso_connect_ind(). That function retrieves the stored event with
hci_recv_event_data() and, while reassembling the periodic advertising
data, does:
memcpy(hcon->le_per_adv_data + hcon->le_per_adv_data_offset,
ev->data, ev->length);
ev->length is taken directly from the event and is never validated
against the amount of data the event actually carries. A controller
that reports a length larger than the received event therefore causes
the memcpy() to read past the end of the event buffer. The leaked bytes
are stored in hcon->le_per_adv_data and can subsequently be read back
from user space via getsockopt(BT_ISO_BASE).
Validate that the event contains ev->length data bytes before it is
consumed, mirroring the check already performed by
hci_le_ext_adv_report_evt() and hci_le_adv_report_evt().
Signed-off-by: Laxman Acharya <acharyalaxman8848@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
btmtksdio_setup() calls pm_runtime_use_autosuspend() when runtime PM
is supported, but btmtksdio_remove() does not call the matching
pm_runtime_dont_use_autosuspend() when removing the device.
If the autosuspend delay is set to a negative value while autosuspend
is enabled, the runtime PM core increments usage_count to prevent
runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
during driver teardown, this reference is not dropped and usage_count
remains unbalanced.
Add the missing pm_runtime_dont_use_autosuspend() call in the remove
path before restoring the runtime PM usage reference.
This issue was found by manual code inspection.
Fixes: 7f3c563c57 ("Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
mgmt_hci_cmd_sync() checks that the message length agrees with params_len
but puts no upper bound on it. params_len is __le16 while the parameter
length in the HCI command header is a u8:
struct hci_command_hdr {
__le16 opcode;
__u8 plen;
} __packed;
hci_cmd_sync_alloc() assigns one to the other:
hdr->plen = plen;
if (plen)
skb_put_data(skb, param, plen);
so a params_len of 256 leaves plen at 0 while all 256 bytes are still
appended. The frame handed to the driver then declares no parameters and
carries 256 of them. On a length framed transport such as H:4 the
controller takes the trailing bytes as the start of the next packet.
The mgmt socket MTU is HCI_MAX_FRAME_SIZE, so params_len can reach about
1KB this way. Commit 03f1700b9b ("Bluetooth: MGMT: reject malformed
HCI_CMD_SYNC commands") only made params_len agree with the message
length, a value that fits the message but not the header field is still
accepted.
Reject params_len that does not fit the header field.
Fixes: 827af4787e ("Bluetooth: MGMT: Add initial implementation of MGMT_OP_HCI_CMD_SYNC")
Cc: stable@vger.kernel.org
Signed-off-by: Ali Ahmet Memis <ali@iusegentoo.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Power supply to the M.2 Bluetooth device attached to the host using M.2
connector is controlled using the 'uart' pwrseq device. So add support
for getting the pwrseq device if the OF graph link is present.
Once obtained, pwrseq_power_on() is called to power up the M.2 Bluetooth
card. The power sequencer descriptor is obtained via pwrseq_get() with
the UART controller device (serdev->ctrl->dev), since the OF graph
link is defined on the UART controller node.
Also add the explicit pwrseq_put() call in all exit paths, pwrseq_put()
already calls pwrseq_power_off() internally, so no separate
pwrseq_power_off() call is needed.
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
mgmt_hci_cmd_sync() queues the pending command with a NULL destroy
callback, so it is only freed if send_hci_cmd_sync() runs. A cancelled
entry is leaked, as _hci_cmd_sync_cancel_entry() does not release
entry->data when there is no destroy callback, and hci_cmd_sync_clear()
cancels every pending entry when the controller is unregistered. Nothing
else reclaims it either: mgmt_pending_new() does not put the command on
hdev->mgmt_pending.
The leak also pins the socket reference taken by mgmt_pending_new(), so
the mgmt socket is never released.
Free the command from a destroy callback. The now-empty done label is
replaced by a direct return.
Fixes: 827af4787e ("Bluetooth: MGMT: Add initial implementation of MGMT_OP_HCI_CMD_SYNC")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
mesh_send_cancel() queues the pending command with a NULL destroy
callback, so it is only freed if send_cancel() runs. A cancelled entry is
leaked, as _hci_cmd_sync_cancel_entry() does not release entry->data when
there is no destroy callback, and hci_cmd_sync_clear() cancels every
pending entry when the controller is unregistered. Nothing else reclaims
it either: mgmt_pending_new() does not put the command on
hdev->mgmt_pending.
The leak also pins the socket reference taken by mgmt_pending_new(), so
the mgmt socket is never released.
Free the command from a destroy callback.
Fixes: b338d91703 ("Bluetooth: Implement support for Mesh")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
adv_timeout_expire() hands a kmalloc()ed instance byte to
hci_cmd_sync_queue() with a NULL destroy callback, and only
adv_timeout_expire_sync() frees it. That leaks on two paths:
- the return value is not checked, and hci_cmd_sync_queue() does not
take ownership when it fails (-ENETDOWN, -ENODEV, -ENOMEM);
- a cancelled entry is not released, as _hci_cmd_sync_cancel_entry()
does not free entry->data when there is no destroy callback.
hci_cmd_sync_clear() cancels every pending entry when the controller
is unregistered.
Free the buffer from a destroy callback, and in the caller when the entry
could not be queued at all.
Fixes: c249ea9b43 ("Bluetooth: Move Adv Instance timer to hci_sync")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_setup_sync() queues a conn_handle_t with a NULL destroy callback, so
the context is only freed if hci_enhanced_setup_sync() actually runs. An
entry that is cancelled instead is leaked, as
_hci_cmd_sync_cancel_entry() does not release entry->data when there is
no destroy callback, and hci_cmd_sync_clear() cancels every pending entry
when the controller is unregistered.
The context also stores a bare hci_conn pointer, so the connection can be
freed while the work is queued. The dequeue in hci_conn_del() does not
cover it either, as it matches on entry->data == conn and entry->data is
the wrapper here. Same problem as commit 2f5d635ad5 ("Bluetooth:
hci_sync: hold conn in hci_connect_acl/le_sync() callbacks").
Hold the connection and release both from a destroy callback. The
submission failure path drops both, since hci_cmd_sync_submit() does not
call the destroy callback when it fails to queue.
Fixes: e07a06b4eb ("Bluetooth: Convert SCO configure_datapath to hci_sync")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_update_event_filter_sync() walks hdev->accept_list while sending a
synchronous HCI command for each remote-wakeup device. The suspend path
holds hdev->req_lock, but accept-list updates are serialized by hdev->lock.
Consequently, remove_device() can free the current list entry during the
controller wait.
The following interleaving causes the use-after-free:
hci_update_event_filter_sync() remove_device()
fetch accept-list entry
hci_set_event_filter_sync()
wait for controller response hci_dev_lock()
list_del()
kfree()
hci_dev_unlock()
read the freed list.next
KASAN reported:
BUG: KASAN: slab-use-after-free in hci_suspend_sync+0x835/0x910
Read of size 8 at addr ffff88810bec8440 by task kworker/0:1/10
Workqueue: events vhci_suspend_work
Call Trace:
hci_suspend_sync+0x835/0x910
hci_suspend_dev+0x182/0x450
process_one_work+0x661/0x1090
worker_thread+0x45b/0xd10
Allocated by task 86:
hci_bdaddr_list_add_with_flags+0x1a8/0x400
add_device+0x381/0x820
hci_sock_sendmsg+0x1033/0x1ea0
Freed by task 91:
kfree+0x131/0x3c0
remove_device+0x429/0xb70
hci_sock_sendmsg+0x1033/0x1ea0
Snapshot the remote-wakeup addresses under hdev->lock. Release the lock
before sending HCI commands. Clear the controller event filter before
building the snapshot, and skip allocation and the second list traversal
when there are no matching entries. This preserves the original filter
and scan-state updates without retaining an accept-list node across a
controller wait.
Fixes: 182ee45da0 ("Bluetooth: hci_sync: Rework hci_suspend_notifier")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/linux-bluetooth/20260730092331.2069741-1-nicoyip.dev@gmail.com/
Signed-off-by: Chengfeng Ye <nicoyip.dev@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_event_func() validates skb->len against ev->max_len from the
entry in hci_ev_table[]. By then, the header has already been
stripped by skb_pull(). So the max event payload is 255, but
hci_ev_table[] still uses HCI_MAX_EVENT_SIZE (260) for it, which is
imprecise.
Fix by introducing HCI_MAX_EVENT_PLEN (255) and using it instead.
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Introduce the hook to solve issues below:
msft_vendor_evt(), the current handler for all VSEs, is unsuitable
since:
- many VSEs are not MSFT ones;
- it always corrupts the non-MSFT VSEs by calling skb_pull_data()
once the MSFT extension is enabled.
Several issues are caused by many transport drivers pre-processing
VSEs in their RX path, often an IRQ-disabled atomic context. Take
the two typical cases below as examples:
Case 1:
// no btmon log, no way to reach userspace
Step 1: handle and free @original_skb directly
Case 2:
// hurts performance and consumes GFP_ATOMIC memory
Step 1: cloned_skb = skb_clone(original_skb, GFP_ATOMIC);
// the VSE is handled here
Step 2: handle and free @cloned_skb
Step 3: hci_recv_frame(hdev, original_skb);
// already handled, but re-enters the stack's event-handling path
Step 4: hci_event_packet(hdev, original_skb);
Fix by introducing the hook with usage:
1) the transport driver registers the hook for VSEs of interest;
2) the stack calls it in process context, handling the VSE like any
other event:
- if interested, handle the VSE - no need to free it - and
return true;
- otherwise return false.
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
nxp_set_ind_reset() injects the non-zero hardware error code
BTNXPUART_IR_HW_ERR.
Simplify it by __hci_reset_dev(hdev, BTNXPUART_IR_HW_ERR).
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_reset_dev() injects a constant hardware error code 0x00 to restart
the device. But a transport driver may need a different error code.
Fix by introducing __hci_reset_dev(hdev, hw_err_code), which will be
used by a follow-up patch.
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
To separate the coredump header and data far more easily, give a
vendor driver the option to pad its header to a fixed size, by
moving the header size limit and ending marker to coredump.h:
- HCI_DEVCD_HDR_SIZE_MAX: the max header size
- HCI_DEVCD_HDR_END_MARKER: the header-ending marker
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Drop the check since:
- it is already implied by the existing (skb->len > HCI_EVENT_HDR_SIZE)
- hdr->plen is then not used by the function at all
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
For a diagnostics VSE, diagnostics_hdr[] sits at the start of the event
payload, skb->data[2], but btintel_recv_event() wrongly guards its
memcmp with @len, which is measured from skb->data[3] for the earlier
INTEL_BOOTLOADER check.
Fix by using (@len + 1) instead, which ==
(skb->len - HCI_EVENT_HDR_SIZE) exactly.
Fixes: af395330ab ("Bluetooth: btintel: Add Intel devcoredump support")
Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The Command Complete dispatch validates only the fixed part of the LE Set
CIG Parameters response. After that part is pulled from the skb,
hci_cc_le_set_cig_params() trusts num_handles and reads each entry in the
trailing handle array.
Matching num_handles against the command's num_cis does not guarantee
that the response contains the advertised handles. A truncated response
from a malfunctioning controller can therefore make the handler read
beyond the skb data.
Validate that the remaining skb data contains all advertised handles.
Include this in the existing response validation so malformed responses
also follow the established CIG failure handling.
Fixes: 26afbd826e ("Bluetooth: Add initial implementation of CIS connections")
Cc: stable@vger.kernel.org
Signed-off-by: Laxman Acharya Padhya <acharyalaxman8848@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The event length validation added by 65be90af27 commit used a single
check against sizeof(*event), which assumed every event type uses the
maximum payload size. Unfortunately event packet length depends on the
type of the received event, so it must be checked separately for each
event type to avoid rejecting some known well-formed events.
Fixes: 65be90af27 ("Bluetooth: btmrvl: validate event packet lengths")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Add context analysis annotations for hci_conn::l2cap_data locking.
Also add necessary lockdep_assert_held() and __must_hold annotations
to prove the access is safe.
The access in smp_conn_security() is supposed to be guarded by the
caller holding lock that blocks concurrent l2cap_conn_del() eg.
hdev->lock, conn->lock or chan->lock. Mark unsafe as can't be
automatically checked now.
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_conn::l2cap_data is accessed without locks in l2cap_disconn_ind via
hci_conn_timeout (disc_work) -> hci_proto_disconn_ind ->
l2cap_disconn_ind. This is UAF if the l2cap_conn is deleted
concurrently.
disc_work is disabled sync in hci_conn_del(), so we cannot take
hci_dev_lock in disc_work.
Fix by using proto_lock to guard l2cap_data, in addition to hdev->lock
which is held in other access paths.
Fixes: ab4eedb790 ("Bluetooth: L2CAP: Fix corrupted list in hci_chan_del")
Reported-by: syzbot+9c40ad7c6ed7165e46e8@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=9c40ad7c6ed7165e46e8
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The virtbt_setup_zephyr() sends the Zephyr vendor command 0xfc08 (Read
Build Information) and hands the response to bt_dev_info() and
hci_set_fw_info() as a "%s" string starting at skb->data + 1, without
checking the length. A backend that answers with status only leaves that
pointer past the end of the received data, so the walk reads adjacent
slab memory until it meets a NUL. Those bytes reach the kernel log and
the firmware-info debugfs file.
To fix this, print the string with a bounded "%.*s" limited to
skb->len - 1. A short or unterminated response then prints as much as
arrived instead of failing setup.
This mirrors commit dd068ef044 ("Bluetooth: bpa10x: avoid OOB read of
revision string in bpa10x_setup()"), which fixed the identical pattern.
Fixes: afd2daa26c ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Removed a redundant braces for a single if statement
Signed-off-by: Oshada Imalka <developerimalka@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
hci_cc_reset() clears the LE accept and resolving lists without taking
hdev->lock. Other command-complete handlers serialize updates to these
lists with that lock, and the debugfs readers hold it while walking them.
This permits the reset completion and a debugfs read to interleave as
follows:
hci_rx_work debugfs reader
----------- --------------
lock hdev->lock
fetch current entry
list_del(entry)
kfree(entry)
read entry fields
The reader then dereferences a freed list entry and may follow its stale
next pointer.
KASAN reported:
BUG: KASAN: slab-use-after-free in white_list_show+0x15f/0x180
Read of size 1 at addr ffff8881015dab16 by task poc/95
Call Trace:
white_list_show+0x15f/0x180
seq_read_iter+0x3ff/0x1190
seq_read+0x267/0x3d0
vfs_read+0x177/0xa20
ksys_read+0xf7/0x1c0
Allocated by task 91:
hci_bdaddr_list_add+0x1a6/0x3a0
hci_cc_le_add_to_accept_list+0xab/0x140
hci_cmd_complete_evt+0x26c/0x9a0
hci_event_packet+0x454/0xb20
hci_rx_work+0x293/0x730
Freed by task 90:
kfree+0x131/0x3c0
hci_bdaddr_list_clear+0xd8/0x160
hci_cc_reset+0x28a/0x370
hci_cmd_complete_evt+0x26c/0x9a0
hci_event_packet+0x454/0xb20
hci_rx_work+0x293/0x730
Take hdev->lock around both list clears. This matches the existing
mutation and traversal locking convention.
Fixes: a4d5504d5c ("Bluetooth: Clear LE white list when resetting controller")
Fixes: cfdb0c2d09 ("Bluetooth: Store Resolv list size")
Cc: stable@vger.kernel.org
Signed-off-by: Chengfeng Ye <nicoyip.dev@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
aml_download_firmware() reads two lengths from the firmware header and
uses them to build pointers before checking that the header and segment
data are present. A truncated or inconsistent firmware image can make
the driver read past firmware->data while constructing TCI commands.
Reject images shorter than the header and ensure that the ICCM and DCCM
ranges fit within the loaded firmware before downloading either segment.
Fixes: 37bac77e46 ("Bluetooth: hci_uart: Add support for Amlogic HCI UART")
Cc: stable@vger.kernel.org
Signed-off-by: Laxman Acharya Padhya <acharyalaxman8848@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Add MGMT_OP_LOAD_CONN_SUBRATE (0x005C) command to load per-device
connection subrate parameters when the SCI feature is supported.
Add MGMT_EV_CONN_SUBRATE (0x0033) event to notify userspace when
connection rate changes occur via the LE Connection Rate Change HCI
event.
Add subrate fields (subrate_min, subrate_max, max_latency, cont_num)
to struct hci_conn_params to store the loaded subrate parameters, and
the corresponding le_rate_* fields to struct hci_conn to track the
parameters currently in use.
When a single entry is loaded for an already-connected central, or on
connection completion, the LE Connection Rate Request procedure is
initiated to apply the parameters.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Add MGMT_SETTING_SCI (bit 25) to advertise support for the Shorter
Connection Interval (SCI) feature. It is reported in the supported
settings whenever the controller is SCI capable, and in the current
settings whenever LE is enabled and the controller is SCI capable
(SCI has no separate enable command, so it is a passive capability).
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Add a read-write sysfs entry at /sys/bus/pci/devices/<BDF>/vendor_reset
to allow userspace to trigger PLDR (Product Level Device Reset).
Reading the attribute displays supported reset types. Writing
integer 0 triggers PLDR. Any other input is rejected with
-EINVAL and a warning log.
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This module sets the acpi_device_id::driver_data to 0 but
the field is not actually used within the module, we can
just drop it from the table.
While we are at it - use a named initializer for the
acpi_device_id::id field and drop setting the list
terminator fields explicitly as well.
Signed-off-by: Pawel Zalewski (The Capable Hub) <pzalewski@thegoodpenguin.co.uk>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
