From 1a8861f117608e269647fb09658ce77bd5899d42 Mon Sep 17 00:00:00 2001 From: "Daniel M. Lambea" Date: Tue, 17 Jul 2018 22:35:36 +0100 Subject: HID: cougar: make compare_device_paths reusable The function compare_device_paths from wacom_sys.c is generic and useful for other drivers. Move the function to hid-core and rename it as hid_compare_device_paths. Signed-off-by: Daniel M. Lambea Reviewed-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/wacom_sys.c | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) (limited to 'drivers/hid/wacom_sys.c') diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index d6797535fff9..ffe59a19b3a3 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -703,18 +703,6 @@ struct wacom_hdev_data { static LIST_HEAD(wacom_udev_list); static DEFINE_MUTEX(wacom_udev_list_lock); -static bool compare_device_paths(struct hid_device *hdev_a, - struct hid_device *hdev_b, char separator) -{ - int n1 = strrchr(hdev_a->phys, separator) - hdev_a->phys; - int n2 = strrchr(hdev_b->phys, separator) - hdev_b->phys; - - if (n1 != n2 || n1 <= 0 || n2 <= 0) - return false; - - return !strncmp(hdev_a->phys, hdev_b->phys, n1); -} - static bool wacom_are_sibling(struct hid_device *hdev, struct hid_device *sibling) { @@ -737,10 +725,10 @@ static bool wacom_are_sibling(struct hid_device *hdev, * the same physical parent device path. */ if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) { - if (!compare_device_paths(hdev, sibling, '/')) + if (!hid_compare_device_paths(hdev, sibling, '/')) return false; } else { - if (!compare_device_paths(hdev, sibling, '.')) + if (!hid_compare_device_paths(hdev, sibling, '.')) return false; } @@ -787,7 +775,7 @@ static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev) /* Try to find an already-probed interface from the same device */ list_for_each_entry(data, &wacom_udev_list, list) { - if (compare_device_paths(hdev, data->dev, '/')) { + if (hid_compare_device_paths(hdev, data->dev, '/')) { kref_get(&data->kref); return data; } -- cgit v1.2.3