linux.git/drivers/hid/hid-core.c, branch v4.17

Merge branch 'for-4.17/upstream' into for-linus

2018-04-05T11:28:46+00:00

Pull a few small generic code cleanups.

Merge branch 'for-4.17/multitouch' into for-linus

2018-04-05T11:27:22+00:00

Pull Razer Blade Stealth support improvement and a few generic cleanups

HID: core: reset the quirks before calling probe again

2018-03-23T14:46:09+00:00

Given that now the quirk handling is done in hid-quirk.c, we can actually
reset the quirks before calling .probe(), so that the drivers do not need
to keep track of initial quirks.

Signed-off-by: Benjamin Tissoires 
Acked-by: Peter Hutterer 
Signed-off-by: Jiri Kosina

HID: core: rewrite the hid-generic automatic unbind

2018-03-06T15:00:51+00:00

We actually can have the unbind/rebind logic in hid-core.c, leaving
only the match function in hid-generic.

This makes hid-generic simpler and the whole logic simpler too.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: core: Fix size as type u32

2018-02-16T12:30:56+00:00

When size is negative, calling memset will make segment fault.
Declare the size as type u32 to keep memset safe.

size in struct hid_report is unsigned, fix return type of
hid_report_len to u32.

Cc: stable@vger.kernel.org
Signed-off-by: Aaron Ma 
Signed-off-by: Jiri Kosina

Merge branch 'for-4.16/hid-quirks-cleanup/_base' into for-linus

2018-01-31T15:12:23+00:00

This series from Benjamin Tissoires finally removes one of the big PITAs
in the hid-core, which is the absolute need of having added all the new
device IDs into the horrid hid_have_special_driver[]

HID: core: lower log level for unknown main item tags to warnings

2017-12-07T10:05:59+00:00

Given all the effort distros have done with splash-screens to give
users a nice clean boot experience, we really want dmesg --level=err
to not print anything unless there is a real problem with either the
hardware or the kernel. Buggy HID descriptors unfortunately happen
all too often, so lower the log level to warning keep the console
clear of error messages such as:

[  441.079664] apple 0005:05AC:0239.0003: unknown main item tag 0x0

Signed-off-by: Hans de Goede 
Acked-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: core: remove the absolute need of hid_have_special_driver[]

2017-11-21T10:14:48+00:00

Most HID devices behave properly when they are used with hid-generic.
Since kernel v4.12, we do not poll for input reports at plug in, so
hid-generic should behave properly with all HID devices.

There has been a long standing list of HID devices that have a special
driver. It used to be just a few, but with time, this list went too big,
and we can not ask users to know which HID special driver will pick up
their device.

We can teach hid-generic to be nice with others. If a device is not
explicitly marked with HID_QUIRK_HAVE_SPECIAL_DRIVER, we can allow
hid-generic to pick up the device as long as no other loaded HID driver
will match the device.

When the special driver appears, hid-generic can step back and let
the special driver handling the device. In case this special driver
is removed, this good old pal of hid-generic will rebind to the device.

This basically makes the list hid_have_special_driver[] useless. It
still allows to not see a hid-generic driver bound and removed during
boot, so we can keep it around.

This will also help other people to have a special HID driver without
the need of recompiling hid-core.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: core: move the list of ignored devices in hid-quirks.c

2017-11-21T10:14:48+00:00

Better having all the devices quirks in one place.

Note that this change introduces an initial lookup for the device in
hid_gets_squirk(), which should not theoretically be required, but which
actually allows to not have to reparse the list of ignored devices
if we call hid_lookup_quirks twice.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: quirks: move the list of special devices into a quirk

2017-11-21T10:14:48+00:00

It is better to centralize the information of special devices in one
single file. Instead of manually parsing the list of devices that
have a special driver or those that need to be ignored, introduce
HID_QUIRK_HAVE_SPECIAL_DRIVER and set the correct quirks while fetching
those quirks.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina