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HID: add hid_is_usb() function to make it simpler for USB detection 

A number of HID drivers already call hid_is_using_ll_driver() but only
for the detection of if this is a USB device or not.  Make this more
obvious by creating hid_is_usb() and calling the function that way.

Also converts the existing hid_is_using_ll_driver() functions to use the
new call.

Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-input@vger.kernel.org
Cc: stable@vger.kernel.org
Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20211201183503.2373082-1-gregkh@linuxfoundation.org
This commit is contained in:
Greg Kroah-Hartman 2021-12-01 19:35:01 +01:00 committed by Benjamin Tissoires
parent 9003fbe0f3
commit f83baa0cb6
6 changed files with 11 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/hid/hid-asus.c
View File

@ -1028,8 +1028,7 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
drvdata->tp = &asus_i2c_tp;
if ((drvdata->quirks & QUIRK_T100_KEYBOARD) &&
hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
if ((drvdata->quirks & QUIRK_T100_KEYBOARD) && hid_is_usb(hdev)) {
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF) {
@ -1057,8 +1056,7 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
drvdata->tp = &asus_t100chi_tp;
}
if ((drvdata->quirks & QUIRK_MEDION_E1239T) &&
hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
if ((drvdata->quirks & QUIRK_MEDION_E1239T) && hid_is_usb(hdev)) {
struct usb_host_interface *alt =
to_usb_interface(hdev->dev.parent)->altsetting;

2
drivers/hid/hid-logitech-dj.c
View File

@ -1777,7 +1777,7 @@ static int logi_dj_probe(struct hid_device *hdev,
case recvr_type_bluetooth: no_dj_interfaces = 2; break;
case recvr_type_dinovo: no_dj_interfaces = 2; break;
}
if (hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
if (hid_is_usb(hdev)) {
intf = to_usb_interface(hdev->dev.parent);
if (intf && intf->altsetting->desc.bInterfaceNumber >=
no_dj_interfaces) {

2
drivers/hid/hid-u2fzero.c
View File

@ -311,7 +311,7 @@ static int u2fzero_probe(struct hid_device *hdev,
unsigned int minor;
int ret;
if (!hid_is_using_ll_driver(hdev, &usb_hid_driver))
if (!hid_is_usb(hdev))
return -EINVAL;
dev = devm_kzalloc(&hdev->dev, sizeof(*dev), GFP_KERNEL);

3
drivers/hid/hid-uclogic-params.c
View File

@ -843,8 +843,7 @@ int uclogic_params_init(struct uclogic_params *params,
struct uclogic_params p = {0, };
/* Check arguments */
if (params == NULL || hdev == NULL ||
!hid_is_using_ll_driver(hdev, &usb_hid_driver)) {
if (params == NULL || hdev == NULL || !hid_is_usb(hdev)) {
rc = -EINVAL;
goto cleanup;
}

2
drivers/hid/wacom_sys.c
View File

@ -2214,7 +2214,7 @@ static void wacom_update_name(struct wacom *wacom, const char *suffix)
if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) {
char *product_name = wacom->hdev->name;
if (hid_is_using_ll_driver(wacom->hdev, &usb_hid_driver)) {
if (hid_is_usb(wacom->hdev)) {
struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent);
struct usb_device *dev = interface_to_usbdev(intf);
product_name = dev->product;

5
include/linux/hid.h
View File

@ -840,6 +840,11 @@ static inline bool hid_is_using_ll_driver(struct hid_device *hdev,
return hdev->ll_driver == driver;
}
static inline bool hid_is_usb(struct hid_device *hdev)
{
return hid_is_using_ll_driver(hdev, &usb_hid_driver);
}
#define PM_HINT_FULLON 1<<5
#define PM_HINT_NORMAL 1<<1