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author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2018-04-24 10:04:34 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2018-04-26 14:17:31 +0200 |
commit | c554bb045511bd6b498b6a61cffa48e473853703 (patch) | |
tree | 484dc707f8b33d1c3f24790ec8a2d46049745cee /drivers/hid/hid-input.c | |
parent | f07b3c1da92db108662f99417a212fc1eddc44d1 (diff) | |
download | linux-stable-c554bb045511bd6b498b6a61cffa48e473853703.tar.gz linux-stable-c554bb045511bd6b498b6a61cffa48e473853703.tar.bz2 linux-stable-c554bb045511bd6b498b6a61cffa48e473853703.zip |
HID: input: append a suffix matching the application
Given that we create one input node per application, we should name
the input node accordingly to not lose userspace.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-input.c')
-rw-r--r-- | drivers/hid/hid-input.c | 67 |
1 files changed, 59 insertions, 8 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 7463ee2a1df2..fea6d4898f15 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1500,15 +1500,56 @@ static void report_features(struct hid_device *hid) } } -static struct hid_input *hidinput_allocate(struct hid_device *hid) +static struct hid_input *hidinput_allocate(struct hid_device *hid, + unsigned int application) { struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); struct input_dev *input_dev = input_allocate_device(); - if (!hidinput || !input_dev) { - kfree(hidinput); - input_free_device(input_dev); - hid_err(hid, "Out of memory during hid input probe\n"); - return NULL; + const char *suffix = NULL; + + if (!hidinput || !input_dev) + goto fail; + + if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && + hid->maxapplication > 1) { + switch (application) { + case HID_GD_KEYBOARD: + suffix = "Keyboard"; + break; + case HID_GD_KEYPAD: + suffix = "Keypad"; + break; + case HID_GD_MOUSE: + suffix = "Mouse"; + break; + case HID_DG_STYLUS: + suffix = "Pen"; + break; + case HID_DG_TOUCHSCREEN: + suffix = "Touchscreen"; + break; + case HID_DG_TOUCHPAD: + suffix = "Touchpad"; + break; + case HID_GD_SYSTEM_CONTROL: + suffix = "System Control"; + break; + case HID_CP_CONSUMER_CONTROL: + suffix = "Consumer Control"; + break; + case HID_GD_WIRELESS_RADIO_CTLS: + suffix = "Wireless Radio Control"; + break; + default: + break; + } + } + + if (suffix) { + hidinput->name = kasprintf(GFP_KERNEL, "%s %s", + hid->name, suffix); + if (!hidinput->name) + goto fail; } input_set_drvdata(input_dev, hid); @@ -1518,7 +1559,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid) input_dev->setkeycode = hidinput_setkeycode; input_dev->getkeycode = hidinput_getkeycode; - input_dev->name = hid->name; + input_dev->name = hidinput->name ? hidinput->name : hid->name; input_dev->phys = hid->phys; input_dev->uniq = hid->uniq; input_dev->id.bustype = hid->bus; @@ -1533,6 +1574,12 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid) INIT_LIST_HEAD(&hidinput->reports); return hidinput; + +fail: + kfree(hidinput); + input_free_device(input_dev); + hid_err(hid, "Out of memory during hid input probe\n"); + return NULL; } static bool hidinput_has_been_populated(struct hid_input *hidinput) @@ -1578,6 +1625,7 @@ static void hidinput_cleanup_hidinput(struct hid_device *hid, list_del(&hidinput->list); input_free_device(hidinput->input); + kfree(hidinput->name); for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { if (k == HID_OUTPUT_REPORT && @@ -1646,6 +1694,7 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) struct hid_driver *drv = hid->driver; struct hid_report *report; struct hid_input *next, *hidinput = NULL; + unsigned int application; int i, k; INIT_LIST_HEAD(&hid->inputs); @@ -1678,6 +1727,8 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) if (!report->maxfield) continue; + application = report->application; + /* * Find the previous hidinput report attached * to this report id. @@ -1689,7 +1740,7 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) hidinput = hidinput_match_application(report); if (!hidinput) { - hidinput = hidinput_allocate(hid); + hidinput = hidinput_allocate(hid, application); if (!hidinput) goto out_unwind; } |