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1,309,163 commits

Author SHA1 Message Date
Pierre-Clément Tosi
a8f0655887 KVM: arm64: Fix clobbered ELR in sync abort/SError
When the hypervisor receives a SError or synchronous exception (EL2h)
while running with the __kvm_hyp_vector and if ELR_EL2 doesn't point to
an extable entry, it panics indirectly by overwriting ELR with the
address of a panic handler in order for the asm routine it returns to to
ERET into the handler.

However, this clobbers ELR_EL2 for the handler itself. As a result,
hyp_panic(), when retrieving what it believes to be the PC where the
exception happened, actually ends up reading the address of the panic
handler that called it! This results in an erroneous and confusing panic
message where the source of any synchronous exception (e.g. BUG() or
kCFI) appears to be __guest_exit_panic, making it hard to locate the
actual BRK instruction.

Therefore, store the original ELR_EL2 in the per-CPU kvm_hyp_ctxt and
point the sysreg to a routine that first restores it to its previous
value before running __guest_exit_panic.

Fixes: 7db2153047 ("KVM: arm64: Restore hyp when panicking in guest context")
Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20240610063244.2828978-2-ptosi@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:40:53 +00:00
Nícolas F. R. A. Prado
819984a0dd kselftest: devices: Add of-fullname-regex property
Introduce a new 'of-fullname-regex' property that takes a regular
expression and matches against the OF_FULLNAME property. It allows
matching controllers that don't have a unique DT address across sibling
controllers, and thus dt-mmio can't be used.

One particular example of where this is needed is on MT8195 which has
multiple USB controllers described by two level deep nodes and using the
ranges property:

    ssusb2: usb@112a1000 {
        reg = <0 0x112a1000 0 0x2dff>, <0 0x112a3e00 0 0x0100>;
        ranges = <0 0 0 0x112a0000 0 0x3f00>;
        xhci2: usb@0 {

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20240613-kselftest-discoverable-probe-mt8195-kci-v1-2-7b396a9b032d@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:39:10 +02:00
Nícolas F. R. A. Prado
f871f9bacd kselftest: devices: Allow specifying boards directory through parameter
Add support for a --boards-dir parameter through which the directory in
which the board files will be searched for can be specified. The
'boards' subdirectory is still used as default when the parameter is not
specified.

This allows more easily running the test with board files supplied by an
external repository like
https://github.com/kernelci/platform-test-parameters.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20240613-kselftest-discoverable-probe-mt8195-kci-v1-1-7b396a9b032d@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:39:09 +02:00
Anand Moon
ccff369341 arm64: dts: amlogic: Used onboard usb hub reset on odroid n2
On Odroid n2/n2+ previously use gpio-hog to reset the usb hub,
switch to used on-board usb hub reset to enable the usb hub
and enable power to hub.

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20240613123020.43500-2-linux.amoon@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:39:00 +02:00
Anand Moon
3d9894e26e dt-bindings: usb: Add the binding example for the Genesys Logic GL3523 hub
Add the binding example for the USB3.1 Genesys Logic GL3523
integrates with USB 3.1 Gen 1 Super Speed and USB 2.0 High-Speed
hub.

For onboard hub controllers that support USB 3.x and USB 2.0 hubs
with shared resets and power supplies, this property is used to identify
the hubs with which these are shared.

GL3523 has built-in 5V to 3.3V and 5V to 1.2V regulators, which serves
power to the USB HUB, it uses 5V power regulator.

Update the peer-hub description.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20240613123020.43500-1-linux.amoon@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:39:00 +02:00
Jeremy Kerr
dba7567c2f usb: gadget: aspeed_udc: fix device address configuration
In the aspeed UDC setup, we configure the UDC hardware with the assigned
USB device address.

However, we have an off-by-one in the bitmask, so we're only setting the
lower 6 bits of the address (USB addresses being 7 bits, and the
hardware bitmask being bits 0:6).

This means that device enumeration fails if the assigned address is
greater than 64:

[  344.607255] usb 1-1: new high-speed USB device number 63 using ehci-platform
[  344.808459] usb 1-1: New USB device found, idVendor=cc00, idProduct=cc00, bcdDevice= 6.10
[  344.817684] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  344.825671] usb 1-1: Product: Test device
[  344.831075] usb 1-1: Manufacturer: Test vendor
[  344.836335] usb 1-1: SerialNumber: 00
[  349.917181] usb 1-1: USB disconnect, device number 63
[  352.036775] usb 1-1: new high-speed USB device number 64 using ehci-platform
[  352.249432] usb 1-1: device descriptor read/all, error -71
[  352.696740] usb 1-1: new high-speed USB device number 65 using ehci-platform
[  352.909431] usb 1-1: device descriptor read/all, error -71

Use the correct mask of 0x7f (rather than 0x3f), and generate this
through the GENMASK macro, so we have numbers that correspond exactly
to the hardware register definition.

Fixes: 055276c132 ("usb: gadget: add Aspeed ast2600 udc driver")
Cc: stable@vger.kernel.org
Reviewed-by: Neal Liu <neal_liu@aspeedtech.com>
Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20240613-aspeed-udc-v2-1-29501ce9cb7a@codeconstruct.com.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:38:21 +02:00
Meng Li
7838de15bb usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock
When config CONFIG_USB_DWC3_DUAL_ROLE is selected, and trigger system
to enter suspend status with below command:
echo mem > /sys/power/state
There will be a deadlock issue occurring. Detailed invoking path as
below:
dwc3_suspend_common()
    spin_lock_irqsave(&dwc->lock, flags);              <-- 1st
    dwc3_gadget_suspend(dwc);
        dwc3_gadget_soft_disconnect(dwc);
            spin_lock_irqsave(&dwc->lock, flags);      <-- 2nd
This issue is exposed by commit c7ebd8149e ("usb: dwc3: gadget: Fix
NULL pointer dereference in dwc3_gadget_suspend") that removes the code
of checking whether dwc->gadget_driver is NULL or not. It causes the
following code is executed and deadlock occurs when trying to get the
spinlock. In fact, the root cause is the commit 5265397f9442("usb: dwc3:
Remove DWC3 locking during gadget suspend/resume") that forgot to remove
the lock of otg mode. So, remove the redundant lock of otg mode during
gadget suspend/resume.

Fixes: 5265397f94 ("usb: dwc3: Remove DWC3 locking during gadget suspend/resume")
Cc: Xu Yang <xu.yang_2@nxp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Meng Li <Meng.Li@windriver.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240618031918.2585799-1-Meng.Li@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:36:45 +02:00
Javier Carrasco
c68942624e usb: typec: ucsi: glink: fix child node release in probe function
The device_for_each_child_node() macro requires explicit calls to
fwnode_handle_put() in all early exits of the loop if the child node is
not required outside. Otherwise, the child node's refcount is not
decremented and the resource is not released.

The current implementation of pmic_glink_ucsi_probe() makes use of the
device_for_each_child_node(), but does not release the child node on
early returns. Add the missing calls to fwnode_handle_put().

Cc: stable@vger.kernel.org
Fixes: c6165ed2f4 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240613-ucsi-glink-release-node-v1-1-f7629a56f70a@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:36:29 +02:00
Uwe Kleine-König
bfd3587760 backlight: Drop explicit initialization of struct i2c_device_id::driver_data to 0
These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

While add it, also remove commas after the sentinel entries.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240619193558.2543645-2-u.kleine-koenig@baylibre.com
Signed-off-by: Lee Jones <lee@kernel.org>
2024-06-20 18:36:25 +01:00
Dan Carpenter
de644a4a86 usb: musb: da8xx: fix a resource leak in probe()
Call usb_phy_generic_unregister() if of_platform_populate() fails.

Fixes: d6299b6efb ("usb: musb: Add support of CPPI 4.1 DMA controller to DA8xx")
Cc: stable <stable@kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/69af1b1d-d3f4-492b-bcea-359ca5949f30@moroto.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:36:15 +02:00
Diogo Ivo
9e3caa9dd5 usb: typec: ucsi_acpi: Add LG Gram quirk
Some LG Gram laptops report a bogus connector change event after a
GET_PDOS command for the partner's source PDOs, which disappears from
the CCI after acknowledging the command. However, the subsequent
GET_CONNECTOR_STATUS in ucsi_handle_connector_change() still reports
this bogus change in bits 5 and 6, leading to the UCSI core re-checking
the partner's source PDOs and thus to an infinite loop.

Fix this by adding a quirk that signals when a potentially buggy GET_PDOS
command is used, checks the status change report and clears it if it is a
bogus event before sending it to the UCSI core.

Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240612-gram_quirk-v1-1-52b0ff0e1546@tecnico.ulisboa.pt
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:36:08 +02:00
Fabrice Gasnier
8e1ec117ef usb: ucsi: stm32: fix command completion handling
Sometimes errors are seen, when doing DR swap, like:
[   24.672481] ucsi-stm32g0-i2c 0-0035: UCSI_GET_PDOS failed (-5)
[   24.720188] ucsi-stm32g0-i2c 0-0035: ucsi_handle_connector_change:
 GET_CONNECTOR_STATUS failed (-5)

There may be some race, which lead to read CCI, before the command complete
flag is set, hence returning -EIO. Similar fix has been done also in
ucsi_acpi [1].

In case of a spurious or otherwise delayed notification it is
possible that CCI still reports the previous completion. The
UCSI spec is aware of this and provides two completion bits in
CCI, one for normal commands and one for acks. As acks and commands
alternate the notification handler can determine if the completion
bit is from the current command.

To fix this add the ACK_PENDING bit for ucsi_stm32g0 and only complete
commands if the completion bit matches.

[1] https://lore.kernel.org/lkml/20240121204123.275441-3-lk@c--e.de/

Fixes: 72849d4fce ("usb: typec: ucsi: stm32g0: add support for stm32g0 controller")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/stable/20240612124656.2305603-1-fabrice.gasnier%40foss.st.com
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240612124656.2305603-1-fabrice.gasnier@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:34:51 +02:00
Nikita Zhandarovich
2eabb655a9 usb: atm: cxacru: fix endpoint checking in cxacru_bind()
Syzbot is still reporting quite an old issue [1] that occurs due to
incomplete checking of present usb endpoints. As such, wrong
endpoints types may be used at urb sumbitting stage which in turn
triggers a warning in usb_submit_urb().

Fix the issue by verifying that required endpoint types are present
for both in and out endpoints, taking into account cmd endpoint type.

Unfortunately, this patch has not been tested on real hardware.

[1] Syzbot report:
usb 1-1: BOGUS urb xfer, pipe 1 != type 3
WARNING: CPU: 0 PID: 8667 at drivers/usb/core/urb.c:502 usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502
Modules linked in:
CPU: 0 PID: 8667 Comm: kworker/0:4 Not tainted 5.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502
...
Call Trace:
 cxacru_cm+0x3c0/0x8e0 drivers/usb/atm/cxacru.c:649
 cxacru_card_status+0x22/0xd0 drivers/usb/atm/cxacru.c:760
 cxacru_bind+0x7ac/0x11a0 drivers/usb/atm/cxacru.c:1209
 usbatm_usb_probe+0x321/0x1ae0 drivers/usb/atm/usbatm.c:1055
 cxacru_usb_probe+0xdf/0x1e0 drivers/usb/atm/cxacru.c:1363
 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:517 [inline]
 really_probe+0x23c/0xcd0 drivers/base/dd.c:595
 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:747
 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:777
 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:894
 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
 __device_attach+0x228/0x4a0 drivers/base/dd.c:965
 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
 device_add+0xc2f/0x2180 drivers/base/core.c:3354
 usb_set_configuration+0x113a/0x1910 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293

Reported-and-tested-by: syzbot+00c18ee8497dd3be6ade@syzkaller.appspotmail.com
Fixes: 902ffc3c70 ("USB: cxacru: Use a bulk/int URB to access the command endpoint")
Cc: stable <stable@kernel.org>
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Link: https://lore.kernel.org/r/20240609131546.3932-1-n.zhandarovich@fintech.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:34:51 +02:00
Oliver Neukum
e587a7633d usb: gadget: printer: fix races against disable
printer_read() and printer_write() guard against the race
against disable() by checking the dev->interface flag,
which in turn is guarded by a spinlock.
These functions, however, drop the lock on multiple occasions.
This means that the test has to be redone after reacquiring
the lock and before doing IO.

Add the tests.

This also addresses CVE-2024-25741

Fixes: 7f2ca14d2f ("usb: gadget: function: printer: Interface is disabled and returns error")
Cc: stable <stable@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20240620114039.5767-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:33:22 +02:00
Oliver Neukum
fd80731e5e usb: gadget: printer: SS+ support
We need to treat super speed plus as super speed, not the default,
which is full speed.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20240620093800.28901-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:32:44 +02:00
Neil Armstrong
90c478ee37 usb: typec-mux: nb7vpq904m: broadcast typec state to next mux
In the Type-C graph, the nb7vpq904m retimer is in between the USB-C
connector and the USB3/DP combo PHY, and this PHY also requires the
USB-C mode events to properly set-up the SuperSpeed Lanes functions
to setup USB3-only, USB3 + DP Altmode or DP Altmode only on the 4 lanes.

Update the nb7vpq904m retimer to get an optional type-c mux on the next
endpoint, and broadcast the received mode to it.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240606-topic-sm8x50-upstream-retimer-broadcast-mode-v2-4-c6f6eae479c3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:32:13 +02:00
Neil Armstrong
a96abf3bad usb: typec-mux: ptn36502: broadcast typec state to next mux
In the Type-C graph, the ptn36502 retimer is in between the USB-C
connector and the USB3/DP combo PHY, and this PHY also requires the
USB-C mode events to properly set-up the SuperSpeed Lanes functions
to setup USB3-only, USB3 + DP Altmode or DP Altmode only on the 4 lanes.

Update the ptn36502 retimer to get an optional type-c mux on the next
endpoint, and broadcast the received mode to it.

Tested-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240606-topic-sm8x50-upstream-retimer-broadcast-mode-v2-3-c6f6eae479c3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:32:13 +02:00
Neil Armstrong
74b64e760e usb: typec-mux: nb7vpq904m: unregister typec switch on probe error and remove
Add the missing call to typec_switch_put() when probe fails and
the nb7vpq904m_remove() call is called.

Fixes: 348359e7c2 ("usb: typec: nb7vpq904m: Add an error handling path in nb7vpq904m_probe()")
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Fixes: 88d8f3ac9c ("usb: typec: add support for the nb7vpq904m Type-C Linear Redriver")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240606-topic-sm8x50-upstream-retimer-broadcast-mode-v2-2-c6f6eae479c3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:32:13 +02:00
Neil Armstrong
2be53b0436 usb: typec-mux: ptn36502: unregister typec switch on probe error and remove
Add the missing call to typec_switch_put() when probe fails and
the ptn36502_remove() call is called.

Fixes: 8e99dc7836 ("usb: typec: add support for PTN36502 redriver")
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240606-topic-sm8x50-upstream-retimer-broadcast-mode-v2-1-c6f6eae479c3@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:32:13 +02:00
Heikki Krogerus
2e031f5065 usb: typec: ucsi: psy: Add support for the charge type property
Adding support for the charge type Linux power supply class
property (POWER_SUPPLY_PROP_CHARGE_TYPE) to the UCSI driver.
That will make the charge type visible in the charge_type
power supply class sysfs attribute file.

UCSI has the charge type specified in the Battery Charging
Status field of the response to the GET_CONNECTOR_STATUS
command.

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240619140806.3502590-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:31:31 +02:00
Heikki Krogerus
3560b37525 usb: typec: ucsi: Changing the driver data type to void
Let's use the same data type as struct device.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240618120024.3384047-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:31:16 +02:00
Parth Pancholi
06f49cc255 dt-bindings: usb: gpio-sbu-mux: Add an entry for TMUXHS4212
Add a compatible entry for the TI TMUXHS4212 GPIO-based
bidirectional 2:1 mux/1:2 demux which can be used for
switching orientation of the SBU lines in USB Type-C
applications.

TMUXHS4212 datasheet: https://www.ti.com/lit/ds/symlink/tmuxhs4212.pdf

Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://lore.kernel.org/r/20240613102913.15714-1-francesco@dolcini.it
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:31:05 +02:00
Bjorn Andersson
34aa3ca439 dt-bindings: usb: qcom,dwc3: Add SC8180X compatibles
The SC8180X platform has two single port DWC3 instances and a two-port
DWC3 instance. Add compatibles for these to the binding.

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20240610-sc8180x-dwc3-binding-compatible-v2-1-c7d5db9702a2@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:31:02 +02:00
Mark Pearson
50a7230a02 usb: typec: ucsi: don't retrieve PDOs if not supported
On systems where the UCSI PDOs are not supported, the UCSI driver is
giving an error message. This can cause users to believe there is a HW
issue with their system when in fact it is working as designed.

Check if PDO_DETAILS are supported as a feature before attempting to
access PDO. If not supported return that zero PDOs are available.

Tested on Lenovo L14 G5 AMD and confirmed with Lenovo FW team that PDOs
are not supported on this platform.

Suggested-by: Diogo Ivo <diogo.ivo@siemens.com>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240609214328.6580-1-mpearson-lenovo@squebb.ca
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:51 +02:00
Daehwan Jung
a353686e7f usb: host: xhci-plat: Add support for XHCI_WRITE_64_HI_LO
xHCI specification 5.1 "Register Conventions" states that 64 bit
registers should be written in low-high order. All writing operations
in xhci is done low-high order following the spec.

Add a new quirk to support workaround for high-low order.

Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
Link: https://lore.kernel.org/r/1718019553-111939-4-git-send-email-dh10.jung@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:30 +02:00
Daehwan Jung
bc162403e3 xhci: Add a quirk for writing ERST in high-low order
This quirk is for the controller that has a limitation in supporting
separate ERSTBA_HI and ERSTBA_LO programming. It's supported when
the ERSTBA is programmed ERSTBA_HI before ERSTBA_LO. That's because
the internal initialization of event ring fetches the
"Event Ring Segment Table Entry" based on the indication of ERSTBA_LO
written.

Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
Link: https://lore.kernel.org/r/1718019553-111939-3-git-send-email-dh10.jung@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:30 +02:00
Daehwan Jung
b7ec7fd632 usb: dwc3: Support quirk for writing high-low order
There's the limitation of Synopsys dwc3 controller with ERST programming in
supporting separate ERSTBA_HI and ERSTBA_LO programming. It's supported when
the ERSTBA is programmed ERSTBA_HI before ERSTBA_LO. But, writing operations
in xHCI is done low-high order following xHCI spec. xHCI specification 5.1
"Register Conventions" states that 64 bit registers should be written in
low-high order. Synopsys dwc3 needs workaround for high-low order. That's why
adding new quirk is needed to support this.

Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
Link: https://lore.kernel.org/r/1718019553-111939-2-git-send-email-dh10.jung@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:30 +02:00
Javier Carrasco
2bc0bea11c usb: typec: tipd: use min() to set tps6598x firmware packet size
Simplify the current firmware packet size check in the tps6598x
implementation by means of a single call to min(), which is what the
current code does in a more verbose, less elegant way.

This patch fixes a cocci warning ("WARNING opportunity for min()").

Suggested-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240606-tps6598x_fw_update_log-v1-3-2b5b8369a0ba@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:16 +02:00
Javier Carrasco
916b8e5fa7 usb: typec: tipd: add error log to provide firmware name and size
The current error logs do not show the firmware name and size for the
tps6598x. On the other hand, this information is provided for the
tps25750. Both implementations have access to that information, and the
existing message for the tps25750 can be used for the tps6598x without
extra modifications.

Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240606-tps6598x_fw_update_log-v1-2-2b5b8369a0ba@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:16 +02:00
Javier Carrasco
5315052d3c usb: typec: tipd: drop second firmware name read
tps_request_firmware() reads the firmware name and there is no need to
repeat the action in the device-specific implementations of the firmware
update mechanism.

Provide the firmware name as a parameter in tps_request_firmware() to
avoid repetitive operations in the device-specific implementations.

Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240606-tps6598x_fw_update_log-v1-1-2b5b8369a0ba@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:16 +02:00
Linus Torvalds
042742a1ff sound fixes for 6.10-rc5
Lots of small HD-audio quirks and fixes (mostly Realtek codec and
 Cirrus stuff).  Also a small MIDI 2.0 fix and a fix for missing
 module description are included.
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Merge tag 'sound-6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Lots of small HD-audio quirks and fixes (mostly Realtek codec and
  Cirrus stuff).

  Also a small MIDI 2.0 fix and a fix for missing module description
  are included"

* tag 'sound-6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda: cs35l56: Select SERIAL_MULTI_INSTANTIATE
  ALSA: hda/realtek: Add more codec ID to no shutup pins list
  sound/oss/dmasound: add missing MODULE_DESCRIPTION() macro
  ALSA: hda/realtek: Add quirk for Lenovo Yoga Pro 7 14ARP8
  ALSA: hda/realtek: Enable headset mic on IdeaPad 330-17IKB 81DM
  ALSA: hda: tas2781: Component should be unbound before deconstruction
  ALSA: hda: cs35l41: Component should be unbound before deconstruction
  ALSA: hda: cs35l56: Component should be unbound before deconstruction
  ALSA/hda: intel-dsp-config: Document AVS as dsp_driver option
  ALSA: hda/realtek: Support Lenovo Thinkbook 13x Gen 4
  ALSA: hda/realtek: Support Lenovo Thinkbook 16P Gen 5
  ALSA: hda: cs35l41: Support Lenovo Thinkbook 13x Gen 4
  ALSA: hda: cs35l41: Support Lenovo Thinkbook 16P Gen 5
  ALSA: hda/realtek: Remove Framework Laptop 16 from quirks
  ALSA: hda/realtek: Limit mic boost on N14AP7
  ALSA: hda/realtek: fix mute/micmute LEDs don't work for ProBook 445/465 G11.
  ALSA: seq: ump: Fix missing System Reset message handling
  ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
  ALSA: hda: cs35l56: Fix lifecycle of codec pointer
2024-06-20 10:30:11 -07:00
Wolfram Sang
38935f3366 usb: typec: tcpm: use 'time_left' variable with wait_for_completion_timeout()
There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_timeout() causing patterns like:

	timeout = wait_for_completion_timeout(...)
	if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240604212730.4968-2-wsa+renesas@sang-engineering.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:30:10 +02:00
Jeff Johnson
5a5696a11f nvme-apple: add missing MODULE_DESCRIPTION()
make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvme/host/nvme-apple.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-06-20 10:21:09 -07:00
Uwe Kleine-König
58be297b67 usb: misc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240619194413.2544537-2-u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:57 +02:00
Jeff Johnson
5e02deadb8 usb: add missing MODULE_DESCRIPTION() macros
With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/core/usbcore.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/mon/usbmon.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/class/usbtmc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/storage/uas.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/chipidea/ci_hdrc_msm.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240618-md-drivers-usb-v2-1-e9b20a5eb7f9@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:52 +02:00
Jeff Johnson
5a94c9a312 usb: common: add missing MODULE_DESCRIPTION() macros
With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/common/usb-common.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/common/usb-otg-fsm.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240611-md-drivers-usb-common-v1-1-f81555b0bd0d@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:47 +02:00
Jeff Johnson
546a765027 usb: phy: add missing MODULE_DESCRIPTION() macros
With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/phy/phy-am335x-control.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/phy/phy-am335x.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240611-md-drivers-usb-phy-v1-1-1cacb41280c3@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:32 +02:00
Jeff Johnson
9fdce69f67 usb: host: add missing MODULE_DESCRIPTION() macros
With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/host/ohci-exynos.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/host/xhci-pci-renesas.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240611-md-drivers-usb-host-v1-1-e2071a696ef8@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:29 +02:00
Jeff Johnson
6f77ab5f77 usb: misc: add missing MODULE_DESCRIPTION() macros
With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/ezusb.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/isight_firmware.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/yurex.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240611-md-drivers-usb-misc-v1-1-98475a5aa8ef@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:24 +02:00
Jeff Johnson
1cb9ba5e61 usb: gadget: add missing MODULE_DESCRIPTION() macros
make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/libcomposite.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_acm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ss_lb.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/u_serial.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_serial.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_obex.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/u_ether.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ncm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ecm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_phonet.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_eem.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ecm_subset.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_rndis.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_mass_storage.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_fs.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac1.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac1_legacy.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac2.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uvc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_midi.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_midi2.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_hid.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_printer.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_tcm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/legacy/g_zero.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/legacy/g_midi.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/legacy/g_dbgp.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240605-md-drivers-usb-gadget-v1-1-29847a46aad3@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:19 +02:00
Frank Li
1899e79cf1 dt-bindings: usb: cdns,usb3: use common usb-drd yaml
Use common usb-drd yaml for usb OTG related propteries to fix below
DTB_CHECK warning.

arch/arm64/boot/dts/freescale/imx8qxp-mek.dtb: usb@5b110000: usb@5b120000: 'port', 'usb-role-switch' do not match any of the regexes: 'pinctrl-[0-9]+'

Add "port" proptery to use connect type C connector and fix below warning.
arch/arm64/boot/dts/freescale/imx8qxp-mek.dtb: usb@5b110000: usb@5b120000: Unevaluated properties are not allowed ('port' was unexpected)

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20240607154119.1543290-1-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-06-20 19:18:10 +02:00
Sebastian Ott
11a31be88f KVM: selftests: arm64: Test writes to CTR_EL0
Test that CTR_EL0 is modifiable from userspace, that changes are
visible to guests, and that they are preserved across a vCPU reset.

Signed-off-by: Sebastian Ott <sebott@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-11-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:45 +00:00
Sebastian Ott
76d3601227 KVM: arm64: rename functions for invariant sys regs
Invariant system id registers are populated with host values
at initialization time using their .reset function cb.

These are currently called get_* which is usually used by
the functions implementing the .get_user callback.

Change their function names to reset_* to reflect what they
are used for.

Signed-off-by: Sebastian Ott <sebott@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-10-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:45 +00:00
Sebastian Ott
bb4fa769dc KVM: arm64: show writable masks for feature registers
Instead of using ~0UL provide the actual writable mask for
non-id feature registers in the output of the
KVM_ARM_GET_REG_WRITABLE_MASKS ioctl.

This changes the mask for the CTR_EL0 and CLIDR_EL1 registers.

Signed-off-by: Sebastian Ott <sebott@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-9-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:45 +00:00
Sebastian Ott
2843cae266 KVM: arm64: Treat CTR_EL0 as a VM feature ID register
CTR_EL0 is currently handled as an invariant register, thus
guests will be presented with the host value of that register.

Add emulation for CTR_EL0 based on a per VM value. Userspace can
switch off DIC and IDC bits and reduce DminLine and IminLine sizes.
Naturally, ensure CTR_EL0 is trapped (HCR_EL2.TID2=1) any time that a
VM's CTR_EL0 differs from hardware.

Signed-off-by: Sebastian Ott <sebott@redhat.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-8-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:44 +00:00
Sebastian Ott
f1ff3fc520 KVM: arm64: unify code to prepare traps
There are 2 functions to calculate traps via HCR_EL2:
* kvm_init_sysreg() called via KVM_RUN (before the 1st run or when
  the pid changes)
* vcpu_reset_hcr() called via KVM_ARM_VCPU_INIT

To unify these 2 and to support traps that are dependent on the
ID register configuration, move the code from vcpu_reset_hcr()
to sys_regs.c and call it via kvm_init_sysreg().

We still have to keep the non-FWB handling stuff in vcpu_reset_hcr().
Also the initialization with HCR_GUEST_FLAGS is kept there but guarded
by !vcpu_has_run_once() to ensure that previous calculated values
don't get overwritten.

While at it rename kvm_init_sysreg() to kvm_calculate_traps() to
better reflect what it's doing.

Signed-off-by: Sebastian Ott <sebott@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-7-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:44 +00:00
Oliver Upton
44241f34fa KVM: arm64: nv: Use accessors for modifying ID registers
In the interest of abstracting away the underlying storage of feature
ID registers, rework the nested code to go through the accessors instead
of directly iterating the id_regs array.

This means we now lose the property that ID registers unknown to the
nested code get zeroed, but we really ought to be handling those
explicitly going forward.

Link: https://lore.kernel.org/r/20240619174036.483943-6-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:44 +00:00
Oliver Upton
d7508d27dd KVM: arm64: Add helper for writing ID regs
Replace the remaining usage of IDREG() with a new helper for setting the
value of a feature ID register, with the benefit of cramming in some
extra sanity checks.

Reviewed-by: Sebastian Ott <sebott@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-5-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:44 +00:00
Oliver Upton
97ca3fcc15 KVM: arm64: Use read-only helper for reading VM ID registers
IDREG() expands to the storage of a particular ID reg, which can be
useful for handling both reads and writes. However, outside of a select
few situations, the ID registers should be considered read only.

Replace current readers with a new macro that expands to the value of
the field rather than the field itself.

Reviewed-by: Sebastian Ott <sebott@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-4-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:44 +00:00
Oliver Upton
410db103f6 KVM: arm64: Make idregs debugfs iterator search sysreg table directly
CTR_EL0 complicates the existing scheme for iterating feature ID
registers, as it is not in the contiguous range that we presently
support. Just search the sysreg table for the Nth feature ID register in
anticipation of this. Yes, the debugfs interface has quadratic time
completixy now. Boo hoo.

Reviewed-by: Sebastian Ott <sebott@redhat.com>
Link: https://lore.kernel.org/r/20240619174036.483943-3-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-06-20 17:16:44 +00:00