Input: hyperv-keyboard - use guard notation when acquiring spinlock

Using guard notation makes the code more compact and error handling
more robust by ensuring that locks are released in all code pa

Input: hyperv-keyboard - use guard notation when acquiring spinlock

Using guard notation makes the code more compact and error handling
more robust by ensuring that locks are released in all code paths
when control leaves critical section.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: serio - use sizeof(*pointer) instead of sizeof(type)

It is preferred to use sizeof(*pointer) instead of sizeof(type)
due to the type of the variable can change and one needs not
change the fo

Input: serio - use sizeof(*pointer) instead of sizeof(type)

It is preferred to use sizeof(*pointer) instead of sizeof(type)
due to the type of the variable can change and one needs not
change the former (unlike the latter). This patch has no effect
on runtime behavior.

Signed-off-by: Erick Archer <[email protected]>
Link: https://lore.kernel.org/r/AS8PR02MB7237D3D898CCC9C50C18DE078BFB2@AS8PR02MB7237.eurprd02.prod.outlook.com
Signed-off-by: Dmitry Torokhov <[email protected]>

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Drivers: hv: Make remove callback of hyperv driver void returned

Since commit fc7a6209d571 ("bus: Make remove callback return
void") forces bus_type::remove be void-returned, it doesn't
make much se

Drivers: hv: Make remove callback of hyperv driver void returned

Since commit fc7a6209d571 ("bus: Make remove callback return
void") forces bus_type::remove be void-returned, it doesn't
make much sense for any bus based driver implementing remove
callbalk to return non-void to its caller.

As such, change the remove function for Hyper-V VMBus based
drivers to return void.

Signed-off-by: Dawei Li <[email protected]>
Link: https://lore.kernel.org/r/TYCP286MB2323A93C55526E4DF239D3ACCAFA9@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM
Signed-off-by: Wei Liu <[email protected]>

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Input: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated b

Input: move from strlcpy with unused retval to strscpy

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Signed-off-by: Wolfram Sang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: hyperv-keyboard: Use VMBUS_RING_SIZE() for ringbuffer sizes

For a Hyper-V vmbus, the size of the ringbuffer has two requirements:

1) it has to take one PAGE_SIZE for the header

2) it has to

Input: hyperv-keyboard: Use VMBUS_RING_SIZE() for ringbuffer sizes

For a Hyper-V vmbus, the size of the ringbuffer has two requirements:

1) it has to take one PAGE_SIZE for the header

2) it has to be PAGE_SIZE aligned so that double-mapping can work

VMBUS_RING_SIZE() could calculate a correct ringbuffer size which
fulfills both requirements, therefore use it to make sure vmbus work
when PAGE_SIZE != HV_HYP_PAGE_SIZE (4K).

Note that since the argument for VMBUS_RING_SIZE() is the size of
payload (data part), so it will be minus 4k (the size of header when
PAGE_SIZE = 4k) than the original value to keep the ringbuffer total
size unchanged when PAGE_SIZE = 4k.

Signed-off-by: Boqun Feng <[email protected]>
Cc: Michael Kelley <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Acked-by: Dmitry Torokhov <[email protected]>
Reviewed-by: Michael Kelley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wei Liu <[email protected]>

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Input: hyperv-keyboard: Add the support of hibernation

Add suspend() and resume() functions so the Hyper-V virtual keyboard
can participate in VM hibernation.

Note that the keyboard is a "wakeup" d

Input: hyperv-keyboard: Add the support of hibernation

Add suspend() and resume() functions so the Hyper-V virtual keyboard
can participate in VM hibernation.

Note that the keyboard is a "wakeup" device that could abort an in-progress
hibernation if there is keyboard event. No attempt is made to suppress this
behavior. If desired, a sysadmin can disable the keyboard as a wakeup device
using standard mechanisms such as:

echo disabled > /sys/bus/vmbus/drivers/hyperv_keyboard/XXX/power/wakeup
(where XXX is the device's GUID)

Reviewed-by: Michael Kelley <[email protected]>
Signed-off-by: Dexuan Cui <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

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Input: hyperv-keyboard: Use in-place iterator API in the channel callback

Simplify the ring buffer handling with the in-place API.

Also avoid the dynamic allocation and the memory leak in the chann

Input: hyperv-keyboard: Use in-place iterator API in the channel callback

Simplify the ring buffer handling with the in-place API.

Also avoid the dynamic allocation and the memory leak in the channel
callback function.

Signed-off-by: Dexuan Cui <[email protected]>
Acked-by: Dmitry Torokhov <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

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Input: hyperv-keyboard - remove dependencies on PAGE_SIZE for ring buffer

Define the ring buffer size as a constant expression because it should
not depend on the guest page size.

Signed-off-by: Ma

Input: hyperv-keyboard - remove dependencies on PAGE_SIZE for ring buffer

Define the ring buffer size as a constant expression because it should
not depend on the guest page size.

Signed-off-by: Maya Nakamura <[email protected]>
Reviewed-by: Michael Kelley <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms and c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms and conditions of the gnu general public license
version 2 as published by the free software foundation this program
is distributed in the hope it will be useful but without any
warranty without even the implied warranty of merchantability or
fitness for a particular purpose see the gnu general public license
for more details

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 263 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Alexios Zavras <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Input: hyperv-keyboard - add module description

Signed-off-by: Joseph Salisbury <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

Input: hyper-v - fix wakeup from suspend-to-idle

It makes little sense but still possible to put Hyper-V guests into
suspend-to-idle state. To wake them up two wakeup sources were registered
in the

Input: hyper-v - fix wakeup from suspend-to-idle

It makes little sense but still possible to put Hyper-V guests into
suspend-to-idle state. To wake them up two wakeup sources were registered
in the past: hyperv-keyboard and hid-hyperv. However, since
commit eed4d47efe95 ("ACPI / sleep: Ignore spurious SCI wakeups from
suspend-to-idle") pm_wakeup_event() from these devices is ignored. Switch
to pm_wakeup_hard_event() API as these devices are actually the only
possible way to wakeup Hyper-V guests.

Fixes: eed4d47efe95 (ACPI / sleep: Ignore spurious SCI wakeups from suspend-to-idle)
Reviewed-by: Rafael J. Wysocki <[email protected]>
Acked-by: K. Y. Srinivasan <[email protected]>
Acked-by: Jiri Kosina <[email protected]>
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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use the new async probing feature for the hyperv drivers

Recent kernels support asynchronous probing; most hyperv drivers
can be probed async easily so set the required flag for this.

Signed-off-by

use the new async probing feature for the hyperv drivers

Recent kernels support asynchronous probing; most hyperv drivers
can be probed async easily so set the required flag for this.

Signed-off-by: Arjan van de Ven <[email protected]>
Signed-off-by: Stephen Hemminger <[email protected]>
Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Input: serio - drop unnecessary calls to device_init_wakeup

Calling device_init_wakeup in the remove function is unnecessary since the
device is going away, and thus won't be able to cause any wakeu

Input: serio - drop unnecessary calls to device_init_wakeup

Calling device_init_wakeup in the remove function is unnecessary since the
device is going away, and thus won't be able to cause any wakeups under any
circumstances. Besides, the driver cleanup code already handles the
necessary cleanup.

Similarly, disabling wakeup in the probe error path is unnecessary, as is
disabling wakeup in the probe function in the first place.

Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Drivers: hv: vmbus: fix the building warning with hyperv-keyboard

With the recent change af3ff643ea91ba64dd8d0b1cbed54d44512f96cd
(Drivers: hv: vmbus: Use uuid_le type consistently), we always get t

Drivers: hv: vmbus: fix the building warning with hyperv-keyboard

With the recent change af3ff643ea91ba64dd8d0b1cbed54d44512f96cd
(Drivers: hv: vmbus: Use uuid_le type consistently), we always get this
warning:

CC [M] drivers/input/serio/hyperv-keyboard.o
drivers/input/serio/hyperv-keyboard.c:427:2: warning: missing braces around
initializer [-Wmissing-braces]
{ HV_KBD_GUID, },
^
drivers/input/serio/hyperv-keyboard.c:427:2: warning: (near initialization
for .id_table[0].guid.b.) [-Wmissing-braces]

The patch fixes the warning.

Signed-off-by: Dexuan Cui <[email protected]>
Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Input: hyperv-keyboard - register as a wakeup source

With this patch, we can press a key to wake up the VM after the VM executes
"echo freeze > /sys/power/state".

Signed-off-by: Dexuan Cui <decui@m

Input: hyperv-keyboard - register as a wakeup source

With this patch, we can press a key to wake up the VM after the VM executes
"echo freeze > /sys/power/state".

Signed-off-by: Dexuan Cui <[email protected]>
Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: hyperv-keyboard - pass through 0xE1 prefix

Pass through the 0xE1 prefix so atkbd can properly parse the scancode
data.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Dmit

Input: hyperv-keyboard - pass through 0xE1 prefix

Pass through the 0xE1 prefix so atkbd can properly parse the scancode
data.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: add a driver to support Hyper-V synthetic keyboard

Add a new driver to support synthetic keyboard. On the next generation
Hyper-V guest firmware, many legacy devices will not be emulated and

Input: add a driver to support Hyper-V synthetic keyboard

Add a new driver to support synthetic keyboard. On the next generation
Hyper-V guest firmware, many legacy devices will not be emulated and this
driver will be required.

I would like to thank Vojtech Pavlik <[email protected]> for helping me with the
details of the AT keyboard driver. I would also like to thank
Dan Carpenter <[email protected]> and
Dmitry Torokhov <[email protected]> for their detailed review of this
driver.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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